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//! [Unigram](https://arxiv.org/abs/1804.10959) model.
mod lattice;
mod model;
mod serialization;
mod trainer;
mod trie;
pub use lattice::*;
pub use model::*;
pub use trainer::*;
|
tokenizers/tokenizers/src/models/unigram/mod.rs/0
|
{
"file_path": "tokenizers/tokenizers/src/models/unigram/mod.rs",
"repo_id": "tokenizers",
"token_count": 72
}
| 254
|
use crate::tokenizer::pattern::Pattern;
use crate::tokenizer::Decoder;
use crate::tokenizer::{NormalizedString, Normalizer, Result};
use crate::utils::SysRegex;
use serde::{Deserialize, Serialize};
/// Represents the different patterns that `Replace` can use
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Eq)]
pub enum ReplacePattern {
String(String),
Regex(String),
}
impl From<String> for ReplacePattern {
fn from(v: String) -> Self {
Self::String(v)
}
}
impl From<&str> for ReplacePattern {
fn from(v: &str) -> Self {
Self::String(v.to_owned())
}
}
/// We use this custom deserializer to provide the value for `regex` for `Replace`
#[doc(hidden)]
#[derive(Deserialize)]
#[serde(tag = "type")]
struct ReplaceDeserializer {
pattern: ReplacePattern,
content: String,
}
impl std::convert::TryFrom<ReplaceDeserializer> for Replace {
type Error = Box<dyn std::error::Error + Send + Sync>;
fn try_from(v: ReplaceDeserializer) -> Result<Self> {
Self::new(v.pattern, v.content)
}
}
/// This normalizer will take a `pattern` (for now only a String)
/// and replace every occurrence with `content`.
#[derive(Debug, Serialize, Deserialize)]
#[serde(tag = "type", try_from = "ReplaceDeserializer")]
pub struct Replace {
pattern: ReplacePattern,
content: String,
#[serde(skip)]
regex: SysRegex,
}
impl Clone for Replace {
fn clone(&self) -> Self {
Self::new(self.pattern.clone(), &self.content).unwrap()
}
}
impl PartialEq for Replace {
fn eq(&self, other: &Self) -> bool {
self.pattern == other.pattern && self.content == other.content
}
}
impl Replace {
pub fn new<I: Into<ReplacePattern>, C: Into<String>>(pattern: I, content: C) -> Result<Self> {
let pattern: ReplacePattern = pattern.into();
let regex = match &pattern {
ReplacePattern::String(s) => SysRegex::new(®ex::escape(s))?,
ReplacePattern::Regex(r) => SysRegex::new(r)?,
};
Ok(Self {
pattern,
content: content.into(),
regex,
})
}
}
impl Normalizer for Replace {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
normalized.replace(&self.regex, &self.content)
}
}
impl Decoder for Replace {
fn decode_chain(&self, tokens: Vec<String>) -> Result<Vec<String>> {
tokens
.into_iter()
.map(|token| -> Result<String> {
let mut new_token = "".to_string();
for ((start, stop), is_match) in (&self.regex).find_matches(&token)? {
if is_match {
new_token.push_str(&self.content);
} else {
new_token.push_str(&token[start..stop]);
}
}
Ok(new_token)
})
.collect()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_replace() {
let original = "This is a ''test''";
let normalized = "This is a \"test\"";
let mut n = NormalizedString::from(original);
Replace::new("''", "\"").unwrap().normalize(&mut n).unwrap();
assert_eq!(&n.get(), &normalized);
}
#[test]
fn test_replace_regex() {
let original = "This is a test";
let normalized = "This is a test";
let mut n = NormalizedString::from(original);
Replace::new(ReplacePattern::Regex(r"\s+".into()), ' ')
.unwrap()
.normalize(&mut n)
.unwrap();
assert_eq!(&n.get(), &normalized);
}
#[test]
fn serialization() {
let replace = Replace::new("Hello", "Hey").unwrap();
let replace_s = r#"{"type":"Replace","pattern":{"String":"Hello"},"content":"Hey"}"#;
assert_eq!(serde_json::to_string(&replace).unwrap(), replace_s);
assert_eq!(serde_json::from_str::<Replace>(replace_s).unwrap(), replace);
let replace = Replace::new(ReplacePattern::Regex(r"\s+".into()), ' ').unwrap();
let replace_s = r#"{"type":"Replace","pattern":{"Regex":"\\s+"},"content":" "}"#;
assert_eq!(serde_json::to_string(&replace).unwrap(), replace_s);
assert_eq!(serde_json::from_str::<Replace>(replace_s).unwrap(), replace);
}
#[test]
fn test_replace_decode() {
let original = vec!["hello".to_string(), "_hello".to_string()];
let replace = Replace::new("_", " ").unwrap();
assert_eq!(
replace.decode_chain(original).unwrap(),
vec!["hello", " hello"]
);
}
}
|
tokenizers/tokenizers/src/normalizers/replace.rs/0
|
{
"file_path": "tokenizers/tokenizers/src/normalizers/replace.rs",
"repo_id": "tokenizers",
"token_count": 2048
}
| 255
|
use regex::Regex;
use crate::tokenizer::{
pattern::Invert, PreTokenizedString, PreTokenizer, Result, SplitDelimiterBehavior,
};
use crate::utils::macro_rules_attribute;
#[derive(Clone, Debug, PartialEq, Eq)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct Whitespace;
impl Default for Whitespace {
fn default() -> Self {
Self
}
}
impl PreTokenizer for Whitespace {
fn pre_tokenize(&self, pretokenized: &mut PreTokenizedString) -> Result<()> {
lazy_static! {
static ref RE: Regex = Regex::new(r"\w+|[^\w\s]+").unwrap();
}
let re_ref: &Regex = &RE;
pretokenized.split(|_, normalized| {
normalized.split(Invert(re_ref), SplitDelimiterBehavior::Removed)
})
}
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct WhitespaceSplit;
impl PreTokenizer for WhitespaceSplit {
fn pre_tokenize(&self, pretokenized: &mut PreTokenizedString) -> Result<()> {
pretokenized.split(|_, normalized| {
normalized.split(char::is_whitespace, SplitDelimiterBehavior::Removed)
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{OffsetReferential, OffsetType, PreTokenizer};
#[test]
fn basic() {
let tests = vec![
(
"Hey man!",
vec![("Hey", (0, 3)), ("man", (4, 7)), ("!", (7, 8))],
),
(
"How are you doing?",
vec![
("How", (0, 3)),
("are", (4, 7)),
("you", (8, 11)),
("doing", (12, 17)),
("?", (17, 18)),
],
),
("\n", vec![]),
];
let pretok = Whitespace {};
for (s, res) in tests {
let mut pretokenized = PreTokenizedString::from(s);
pretok.pre_tokenize(&mut pretokenized).unwrap();
assert_eq!(
pretokenized
.get_splits(OffsetReferential::Original, OffsetType::Byte)
.into_iter()
.map(|(s, o, _)| (s, o))
.collect::<Vec<_>>(),
res
);
}
}
#[test]
fn whitespace_split() {
let tests = vec![
("Hey man!", vec![("Hey", (0, 3)), ("man!", (4, 8))]),
(
"Hey, man, Good?",
vec![("Hey,", (0, 4)), ("man,", (5, 9)), ("Good?", (10, 15))],
),
];
let pretok = WhitespaceSplit;
for (s, res) in tests {
let mut pretokenized = PreTokenizedString::from(s);
pretok.pre_tokenize(&mut pretokenized).unwrap();
assert_eq!(
pretokenized
.get_splits(OffsetReferential::Original, OffsetType::Byte)
.into_iter()
.map(|(s, o, _)| (s, o))
.collect::<Vec<_>>(),
res
);
}
}
}
|
tokenizers/tokenizers/src/pre_tokenizers/whitespace.rs/0
|
{
"file_path": "tokenizers/tokenizers/src/pre_tokenizers/whitespace.rs",
"repo_id": "tokenizers",
"token_count": 1660
}
| 256
|
//! This comes from the Rust libcore and is duplicated here because it is not exported
//! (cf <https://github.com/rust-lang/rust/blob/25091ed9b7739e12466fb2490baa1e8a2815121c/src/libcore/iter/adapters/mod.rs#L2664>)
//! We are now using the version from <https://stackoverflow.com/questions/44544323/how-to-unzip-a-sequence-of-resulta-b-e-to-a-veca-vecb-and-stop-on-f>
//! because the one from the libcore seems to cause overflowing stacks in some cases
//! It also contains a lines_with_ending that copies std::io::BufRead but keeps line endings.
use std::io::BufRead;
pub struct ResultShunt<I, E> {
iter: I,
error: Option<E>,
}
impl<I, T, E> ResultShunt<I, E>
where
I: Iterator<Item = Result<T, E>>,
{
/// Process the given iterator as if it yielded a `T` instead of a
/// `Result<T, _>`. Any errors will stop the inner iterator and
/// the overall result will be an error.
pub fn process<F, U>(iter: I, mut f: F) -> Result<U, E>
where
F: FnMut(&mut Self) -> U,
{
let mut shunt = ResultShunt::new(iter);
let value = f(shunt.by_ref());
shunt.reconstruct(value)
}
fn new(iter: I) -> Self {
ResultShunt { iter, error: None }
}
/// Consume the adapter and rebuild a `Result` value. This should
/// *always* be called, otherwise any potential error would be
/// lost.
fn reconstruct<U>(self, val: U) -> Result<U, E> {
match self.error {
None => Ok(val),
Some(e) => Err(e),
}
}
}
impl<I, T, E> Iterator for ResultShunt<I, E>
where
I: Iterator<Item = Result<T, E>>,
{
type Item = T;
fn next(&mut self) -> Option<Self::Item> {
match self.iter.next() {
Some(Ok(v)) => Some(v),
Some(Err(e)) => {
self.error = Some(e);
None
}
None => None,
}
}
}
/// Copied from std::io::BufRead but keep newline characters.
#[derive(Debug)]
pub struct Lines<B> {
buf: B,
}
pub trait LinesWithEnding<B> {
fn lines_with_ending(self) -> Lines<B>;
}
impl<B> LinesWithEnding<B> for B
where
B: BufRead,
{
fn lines_with_ending(self) -> Lines<B> {
Lines::<B> { buf: self }
}
}
impl<B: BufRead> Iterator for Lines<B> {
type Item = std::io::Result<String>;
fn next(&mut self) -> Option<Self::Item> {
let mut buf = String::new();
match self.buf.read_line(&mut buf) {
Ok(0) => None,
Ok(_n) => {
// if buf.ends_with('\n') {
// buf.pop();
// if buf.ends_with('\r') {
// buf.pop();
// }
// }
Some(Ok(buf))
}
Err(e) => Some(Err(e)),
}
}
}
|
tokenizers/tokenizers/src/utils/iter.rs/0
|
{
"file_path": "tokenizers/tokenizers/src/utils/iter.rs",
"repo_id": "tokenizers",
"token_count": 1339
}
| 257
|
version: 2.1
setup: true
orbs:
continuation: circleci/continuation@0.1.0
parameters:
nightly:
type: boolean
default: false
jobs:
# Ensure running with CircleCI/huggingface
check_circleci_user:
docker:
- image: python:3.10-slim
parallelism: 1
steps:
- run: echo $CIRCLE_PROJECT_USERNAME
- run: |
if [ "$CIRCLE_PROJECT_USERNAME" = "huggingface" ]; then
exit 0
else
echo "The CI is running under $CIRCLE_PROJECT_USERNAME personal account. Please follow https://support.circleci.com/hc/en-us/articles/360008097173-Troubleshooting-why-pull-requests-are-not-triggering-jobs-on-my-organization- to fix it."; exit -1
fi
# Fetch the tests to run
fetch_tests:
working_directory: ~/transformers
docker:
- image: huggingface/transformers-quality
parallelism: 1
steps:
- checkout
- run: uv pip install -U -e .
- run: echo 'export "GIT_COMMIT_MESSAGE=$(git show -s --format=%s)"' >> "$BASH_ENV" && source "$BASH_ENV"
- run: mkdir -p test_preparation
- run: python utils/tests_fetcher.py | tee tests_fetched_summary.txt
- run: python utils/tests_fetcher.py --filter_tests
- run: export "GIT_COMMIT_MESSAGE=$(git show -s --format=%s)" && echo $GIT_COMMIT_MESSAGE && python .circleci/create_circleci_config.py --fetcher_folder test_preparation
- run: |
if [ ! -s test_preparation/generated_config.yml ]; then
echo "No tests to run, exiting early!"
circleci-agent step halt
fi
- store_artifacts:
path: test_preparation
- run:
name: "Retrieve Artifact Paths"
env:
CIRCLE_TOKEN: ${{ secrets.CI_ARTIFACT_TOKEN }}
command: |
project_slug="gh/${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}"
job_number=${CIRCLE_BUILD_NUM}
url="https://circleci.com/api/v2/project/${project_slug}/${job_number}/artifacts"
curl -o test_preparation/artifacts.json ${url}
- run:
name: "Show Artifacts"
command: |
cat test_preparation/artifacts.json | jq '.items | map({(.path | split("/")[-1][:-4]): .url}) | add | del(.["generated_config"])' > test_preparation/transformed_artifacts.json
# To avoid too long generated_config.yaml on the continuation orb, we pass the links to the artifacts as parameters.
# Otherwise the list of tests was just too big. Explicit is good but for that it was a limitation.
# We used:
# https://circleci.com/docs/api/v2/index.html#operation/getJobArtifacts : to get the job artifacts
# We could not pass a nested dict, which is why we create the test_file_... parameters for every single job
- store_artifacts:
path: test_preparation/transformed_artifacts.json
- continuation/continue:
parameters: test_preparation/transformed_artifacts.json
configuration_path: test_preparation/generated_config.yml
# To run all tests for the nightly build
fetch_all_tests:
working_directory: ~/transformers
docker:
- image: huggingface/transformers-quality
parallelism: 1
steps:
- checkout
- run: uv pip install -e .
- run: |
mkdir test_preparation
echo -n "tests" > test_preparation/test_list.txt
echo -n "all" > test_preparation/examples_test_list.txt
echo -n "tests/repo_utils" > test_preparation/test_repo_utils.txt
- run: |
echo -n "tests" > test_list.txt
python utils/tests_fetcher.py --filter_tests
mv test_list.txt test_preparation/filtered_test_list.txt
- run: python .circleci/create_circleci_config.py --fetcher_folder test_preparation
- run: cp test_preparation/generated_config.yml test_preparation/generated_config.txt
- store_artifacts:
path: test_preparation/generated_config.txt
- continuation/continue:
configuration_path: test_preparation/generated_config.yml
check_code_quality:
working_directory: ~/transformers
docker:
- image: huggingface/transformers-quality
resource_class: large
environment:
TRANSFORMERS_IS_CI: yes
PYTEST_TIMEOUT: 120
parallelism: 1
steps:
- checkout
- run: uv pip install -e .
- run:
name: Show installed libraries and their versions
command: pip freeze | tee installed.txt
- store_artifacts:
path: ~/transformers/installed.txt
- run: python -c "from transformers import *" || (echo '🚨 import failed, this means you introduced unprotected imports! 🚨'; exit 1)
- run: ruff check examples tests src utils
- run: ruff format tests src utils --check
- run: python utils/custom_init_isort.py --check_only
- run: python utils/sort_auto_mappings.py --check_only
- run: python utils/check_doc_toc.py
- run: python utils/check_docstrings.py --check_all
check_repository_consistency:
working_directory: ~/transformers
docker:
- image: huggingface/transformers-consistency
resource_class: large
environment:
TRANSFORMERS_IS_CI: yes
PYTEST_TIMEOUT: 120
parallelism: 1
steps:
- checkout
- run: uv pip install -e .
- run:
name: Show installed libraries and their versions
command: pip freeze | tee installed.txt
- store_artifacts:
path: ~/transformers/installed.txt
- run: python utils/check_copies.py
- run: python utils/check_table.py
- run: python utils/check_dummies.py
- run: python utils/check_repo.py
- run: python utils/check_inits.py
- run: python utils/check_config_docstrings.py
- run: python utils/check_config_attributes.py
- run: python utils/check_doctest_list.py
- run: make deps_table_check_updated
- run: python utils/update_metadata.py --check-only
- run: python utils/check_docstrings.py
- run: python utils/check_support_list.py
workflows:
version: 2
setup_and_quality:
when:
not: <<pipeline.parameters.nightly>>
jobs:
- check_circleci_user
- check_code_quality
- check_repository_consistency
- fetch_tests
nightly:
when: <<pipeline.parameters.nightly>>
jobs:
- check_circleci_user
- check_code_quality
- check_repository_consistency
- fetch_all_tests
|
transformers/.circleci/config.yml/0
|
{
"file_path": "transformers/.circleci/config.yml",
"repo_id": "transformers",
"token_count": 3593
}
| 258
|
FROM python:3.10-slim
ENV PYTHONDONTWRITEBYTECODE=1
USER root
RUN apt-get update && apt-get install -y --no-install-recommends libsndfile1-dev espeak-ng time git g++ cmake pkg-config openssh-client git
ENV UV_PYTHON=/usr/local/bin/python
RUN pip --no-cache-dir install uv && uv venv && uv pip install --no-cache-dir -U pip setuptools
RUN pip install --no-cache-dir 'torch' 'torchvision' 'torchaudio' --index-url https://download.pytorch.org/whl/cpu
RUN uv pip install --no-deps timm accelerate --extra-index-url https://download.pytorch.org/whl/cpu
RUN uv pip install --no-cache-dir librosa "transformers[sklearn,sentencepiece,vision,testing]" seqeval albumentations jiwer
RUN pip uninstall -y transformers
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
|
transformers/docker/examples-torch.dockerfile/0
|
{
"file_path": "transformers/docker/examples-torch.dockerfile",
"repo_id": "transformers",
"token_count": 277
}
| 259
|
# https://docs.nvidia.com/deeplearning/frameworks/pytorch-release-notes/rel-23-11.html#rel-23-11
FROM nvcr.io/nvidia/pytorch:23.04-py3
LABEL maintainer="Hugging Face"
ARG DEBIAN_FRONTEND=noninteractive
ARG PYTORCH='2.2.0'
# Example: `cu102`, `cu113`, etc.
ARG CUDA='cu121'
RUN apt -y update
RUN apt install -y libaio-dev
RUN python3 -m pip install --no-cache-dir --upgrade pip
ARG REF=main
RUN git clone https://github.com/huggingface/transformers && cd transformers && git checkout $REF
RUN python3 -m pip install --no-cache-dir ./transformers[deepspeed-testing]
# Install latest release PyTorch
# (PyTorch must be installed before pre-compiling any DeepSpeed c++/cuda ops.)
# (https://www.deepspeed.ai/tutorials/advanced-install/#pre-install-deepspeed-ops)
RUN python3 -m pip uninstall -y torch torchvision torchaudio && python3 -m pip install --no-cache-dir -U torch==$PYTORCH torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/$CUDA
RUN python3 -m pip install --no-cache-dir git+https://github.com/huggingface/accelerate@main#egg=accelerate
# Uninstall `transformer-engine` shipped with the base image
RUN python3 -m pip uninstall -y transformer-engine
# Uninstall `torch-tensorrt` shipped with the base image
RUN python3 -m pip uninstall -y torch-tensorrt
# recompile apex
RUN python3 -m pip uninstall -y apex
# RUN git clone https://github.com/NVIDIA/apex
# `MAX_JOBS=1` disables parallel building to avoid cpu memory OOM when building image on GitHub Action (standard) runners
# TODO: check if there is alternative way to install latest apex
# RUN cd apex && MAX_JOBS=1 python3 -m pip install --global-option="--cpp_ext" --global-option="--cuda_ext" --no-cache -v --disable-pip-version-check .
# Pre-build **latest** DeepSpeed, so it would be ready for testing (otherwise, the 1st deepspeed test will timeout)
RUN python3 -m pip uninstall -y deepspeed
# This has to be run (again) inside the GPU VMs running the tests.
# The installation works here, but some tests fail, if we don't pre-build deepspeed again in the VMs running the tests.
# TODO: Find out why test fail.
RUN DS_BUILD_CPU_ADAM=1 DS_BUILD_FUSED_ADAM=1 python3 -m pip install deepspeed --global-option="build_ext" --global-option="-j8" --no-cache -v --disable-pip-version-check 2>&1
# When installing in editable mode, `transformers` is not recognized as a package.
# this line must be added in order for python to be aware of transformers.
RUN cd transformers && python3 setup.py develop
# The base image ships with `pydantic==1.8.2` which is not working - i.e. the next command fails
RUN python3 -m pip install -U --no-cache-dir "pydantic>=2.0.0"
RUN python3 -c "from deepspeed.launcher.runner import main"
|
transformers/docker/transformers-pytorch-deepspeed-latest-gpu/Dockerfile/0
|
{
"file_path": "transformers/docker/transformers-pytorch-deepspeed-latest-gpu/Dockerfile",
"repo_id": "transformers",
"token_count": 895
}
| 260
|
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Wie erstellt man eine benutzerdefinierte Pipeline?
In dieser Anleitung sehen wir uns an, wie Sie eine benutzerdefinierte Pipeline erstellen und sie auf dem [Hub](https://hf.co/models) freigeben oder sie der
🤗 Transformers-Bibliothek hinzufügen.
Zuallererst müssen Sie entscheiden, welche Roheingaben die Pipeline verarbeiten kann. Es kann sich um Strings, rohe Bytes,
Dictionaries oder was auch immer die wahrscheinlichste gewünschte Eingabe ist. Versuchen Sie, diese Eingaben so rein wie möglich in Python zu halten
denn das macht die Kompatibilität einfacher (auch mit anderen Sprachen über JSON). Dies werden die Eingaben der
Pipeline (`Vorverarbeitung`).
Definieren Sie dann die `Outputs`. Dieselbe Richtlinie wie für die Eingänge. Je einfacher, desto besser. Dies werden die Ausgaben der
Methode `Postprocess`.
Beginnen Sie damit, die Basisklasse `Pipeline` mit den 4 Methoden zu erben, die für die Implementierung von `preprocess` benötigt werden,
Weiterleiten", "Nachbearbeitung" und "Parameter säubern".
```python
from transformers import Pipeline
class MyPipeline(Pipeline):
def _sanitize_parameters(self, **kwargs):
preprocess_kwargs = {}
if "maybe_arg" in kwargs:
preprocess_kwargs["maybe_arg"] = kwargs["maybe_arg"]
return preprocess_kwargs, {}, {}
def preprocess(self, inputs, maybe_arg=2):
model_input = Tensor(inputs["input_ids"])
return {"model_input": model_input}
def _forward(self, model_inputs):
# model_inputs == {"model_input": model_input}
outputs = self.model(**model_inputs)
# Maybe {"logits": Tensor(...)}
return outputs
def postprocess(self, model_outputs):
best_class = model_outputs["logits"].softmax(-1)
return best_class
```
Die Struktur dieser Aufteilung soll eine relativ nahtlose Unterstützung für CPU/GPU ermöglichen und gleichzeitig die Durchführung von
Vor-/Nachbearbeitung auf der CPU in verschiedenen Threads
Preprocess" nimmt die ursprünglich definierten Eingaben und wandelt sie in etwas um, das in das Modell eingespeist werden kann. Es kann
mehr Informationen enthalten und ist normalerweise ein `Dict`.
`_forward` ist das Implementierungsdetail und ist nicht dafür gedacht, direkt aufgerufen zu werden. Weiterleiten" ist die bevorzugte
aufgerufene Methode, da sie Sicherheitsvorkehrungen enthält, die sicherstellen, dass alles auf dem erwarteten Gerät funktioniert. Wenn etwas
mit einem realen Modell verknüpft ist, gehört es in die Methode `_forward`, alles andere gehört in die Methoden preprocess/postprocess.
Die Methode `Postprocess` nimmt die Ausgabe von `_forward` und verwandelt sie in die endgültige Ausgabe, die zuvor festgelegt wurde.
zuvor entschieden wurde.
Die Methode `_sanitize_parameters` ermöglicht es dem Benutzer, beliebige Parameter zu übergeben, wann immer er möchte, sei es bei der Initialisierung
Zeit `pipeline(...., maybe_arg=4)` oder zur Aufrufzeit `pipe = pipeline(...); output = pipe(...., maybe_arg=4)`.
Die Rückgabe von `_sanitize_parameters` sind die 3 Dicts von kwargs, die direkt an `preprocess` übergeben werden,
`_forward` und `postprocess` übergeben werden. Füllen Sie nichts aus, wenn der Aufrufer keinen zusätzlichen Parameter angegeben hat. Das
erlaubt es, die Standardargumente in der Funktionsdefinition beizubehalten, was immer "natürlicher" ist.
Ein klassisches Beispiel wäre das Argument `top_k` in der Nachbearbeitung bei Klassifizierungsaufgaben.
```python
>>> pipe = pipeline("my-new-task")
>>> pipe("This is a test")
[{"label": "1-star", "score": 0.8}, {"label": "2-star", "score": 0.1}, {"label": "3-star", "score": 0.05}
{"label": "4-star", "score": 0.025}, {"label": "5-star", "score": 0.025}]
>>> pipe("This is a test", top_k=2)
[{"label": "1-star", "score": 0.8}, {"label": "2-star", "score": 0.1}]
```
In order to achieve that, we'll update our `postprocess` method with a default parameter to `5`. and edit
`_sanitize_parameters` to allow this new parameter.
```python
def postprocess(self, model_outputs, top_k=5):
best_class = model_outputs["logits"].softmax(-1)
# Add logic to handle top_k
return best_class
def _sanitize_parameters(self, **kwargs):
preprocess_kwargs = {}
if "maybe_arg" in kwargs:
preprocess_kwargs["maybe_arg"] = kwargs["maybe_arg"]
postprocess_kwargs = {}
if "top_k" in kwargs:
postprocess_kwargs["top_k"] = kwargs["top_k"]
return preprocess_kwargs, {}, postprocess_kwargs
```
Versuchen Sie, die Eingaben/Ausgaben sehr einfach und idealerweise JSON-serialisierbar zu halten, da dies die Verwendung der Pipeline sehr einfach macht
ohne dass die Benutzer neue Arten von Objekten verstehen müssen. Es ist auch relativ üblich, viele verschiedene Arten von Argumenten zu unterstützen
von Argumenten zu unterstützen (Audiodateien, die Dateinamen, URLs oder reine Bytes sein können).
## Hinzufügen zur Liste der unterstützten Aufgaben
Um Ihre `neue Aufgabe` in die Liste der unterstützten Aufgaben aufzunehmen, müssen Sie sie zur `PIPELINE_REGISTRY` hinzufügen:
```python
from transformers.pipelines import PIPELINE_REGISTRY
PIPELINE_REGISTRY.register_pipeline(
"new-task",
pipeline_class=MyPipeline,
pt_model=AutoModelForSequenceClassification,
)
```
Wenn Sie möchten, können Sie ein Standardmodell angeben. In diesem Fall sollte es mit einer bestimmten Revision (die der Name einer Verzweigung oder ein Commit-Hash sein kann, hier haben wir `"abcdef"` genommen) sowie mit dem Typ versehen sein:
```python
PIPELINE_REGISTRY.register_pipeline(
"new-task",
pipeline_class=MyPipeline,
pt_model=AutoModelForSequenceClassification,
default={"pt": ("user/awesome_model", "abcdef")},
type="text", # current support type: text, audio, image, multimodal
)
```
## Teilen Sie Ihre Pipeline auf dem Hub
Um Ihre benutzerdefinierte Pipeline auf dem Hub freizugeben, müssen Sie lediglich den benutzerdefinierten Code Ihrer `Pipeline`-Unterklasse in einer
Python-Datei speichern. Nehmen wir zum Beispiel an, Sie möchten eine benutzerdefinierte Pipeline für die Klassifizierung von Satzpaaren wie folgt verwenden:
```py
import numpy as np
from transformers import Pipeline
def softmax(outputs):
maxes = np.max(outputs, axis=-1, keepdims=True)
shifted_exp = np.exp(outputs - maxes)
return shifted_exp / shifted_exp.sum(axis=-1, keepdims=True)
class PairClassificationPipeline(Pipeline):
def _sanitize_parameters(self, **kwargs):
preprocess_kwargs = {}
if "second_text" in kwargs:
preprocess_kwargs["second_text"] = kwargs["second_text"]
return preprocess_kwargs, {}, {}
def preprocess(self, text, second_text=None):
return self.tokenizer(text, text_pair=second_text, return_tensors=self.framework)
def _forward(self, model_inputs):
return self.model(**model_inputs)
def postprocess(self, model_outputs):
logits = model_outputs.logits[0].numpy()
probabilities = softmax(logits)
best_class = np.argmax(probabilities)
label = self.model.config.id2label[best_class]
score = probabilities[best_class].item()
logits = logits.tolist()
return {"label": label, "score": score, "logits": logits}
```
Die Implementierung ist Framework-unabhängig und funktioniert für PyTorch- und TensorFlow-Modelle. Wenn wir dies in einer Datei
einer Datei namens `pair_classification.py` gespeichert haben, können wir sie importieren und wie folgt registrieren:
```py
from pair_classification import PairClassificationPipeline
from transformers.pipelines import PIPELINE_REGISTRY
from transformers import AutoModelForSequenceClassification, TFAutoModelForSequenceClassification
PIPELINE_REGISTRY.register_pipeline(
"pair-classification",
pipeline_class=PairClassificationPipeline,
pt_model=AutoModelForSequenceClassification,
tf_model=TFAutoModelForSequenceClassification,
)
```
Sobald dies geschehen ist, können wir es mit einem vortrainierten Modell verwenden. Zum Beispiel wurde `sgugger/finetuned-bert-mrpc` auf den
auf den MRPC-Datensatz abgestimmt, der Satzpaare als Paraphrasen oder nicht klassifiziert.
```py
from transformers import pipeline
classifier = pipeline("pair-classification", model="sgugger/finetuned-bert-mrpc")
```
Dann können wir sie auf dem Hub mit der Methode `push_to_hub` freigeben:
```py
classifier.push_to_hub("test-dynamic-pipeline")
```
Dadurch wird die Datei, in der Sie `PairClassificationPipeline` definiert haben, in den Ordner `"test-dynamic-pipeline"` kopiert,
und speichert das Modell und den Tokenizer der Pipeline, bevor Sie alles in das Repository verschieben
`{Ihr_Benutzername}/test-dynamic-pipeline`. Danach kann jeder die Pipeline verwenden, solange er die Option
`trust_remote_code=True` angeben:
```py
from transformers import pipeline
classifier = pipeline(model="{your_username}/test-dynamic-pipeline", trust_remote_code=True)
```
## Hinzufügen der Pipeline zu 🤗 Transformers
Wenn Sie Ihre Pipeline zu 🤗 Transformers beitragen möchten, müssen Sie ein neues Modul im Untermodul `pipelines` hinzufügen
mit dem Code Ihrer Pipeline hinzufügen. Fügen Sie es dann der Liste der in `pipelines/__init__.py` definierten Aufgaben hinzu.
Dann müssen Sie noch Tests hinzufügen. Erstellen Sie eine neue Datei `tests/test_pipelines_MY_PIPELINE.py` mit Beispielen für die anderen Tests.
Die Funktion `run_pipeline_test` ist sehr allgemein gehalten und läuft auf kleinen Zufallsmodellen auf jeder möglichen
Architektur, wie durch `model_mapping` und `tf_model_mapping` definiert.
Dies ist sehr wichtig, um die zukünftige Kompatibilität zu testen, d.h. wenn jemand ein neues Modell für
`XXXForQuestionAnswering` hinzufügt, wird der Pipeline-Test versuchen, mit diesem Modell zu arbeiten. Da die Modelle zufällig sind, ist es
ist es unmöglich, die tatsächlichen Werte zu überprüfen. Deshalb gibt es eine Hilfsfunktion `ANY`, die einfach versucht, die
Ausgabe der Pipeline TYPE.
Außerdem *müssen* Sie 2 (idealerweise 4) Tests implementieren.
- `test_small_model_pt` : Definieren Sie 1 kleines Modell für diese Pipeline (es spielt keine Rolle, ob die Ergebnisse keinen Sinn ergeben)
und testen Sie die Ausgaben der Pipeline. Die Ergebnisse sollten die gleichen sein wie bei `test_small_model_tf`.
- `test_small_model_tf` : Definieren Sie 1 kleines Modell für diese Pipeline (es spielt keine Rolle, ob die Ergebnisse keinen Sinn ergeben)
und testen Sie die Ausgaben der Pipeline. Die Ergebnisse sollten die gleichen sein wie bei `test_small_model_pt`.
- `test_large_model_pt` (`optional`): Testet die Pipeline an einer echten Pipeline, bei der die Ergebnisse
Sinn machen. Diese Tests sind langsam und sollten als solche gekennzeichnet werden. Hier geht es darum, die Pipeline zu präsentieren und sicherzustellen
sicherzustellen, dass es in zukünftigen Versionen keine Abweichungen gibt.
- `test_large_model_tf` (`optional`): Testet die Pipeline an einer echten Pipeline, bei der die Ergebnisse
Sinn machen. Diese Tests sind langsam und sollten als solche gekennzeichnet werden. Hier geht es darum, die Pipeline zu präsentieren und sicherzustellen
sicherzustellen, dass es in zukünftigen Versionen keine Abweichungen gibt.
|
transformers/docs/source/de/add_new_pipeline.md/0
|
{
"file_path": "transformers/docs/source/de/add_new_pipeline.md",
"repo_id": "transformers",
"token_count": 4535
}
| 261
|
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# Create a custom architecture
An [`AutoClass`](model_doc/auto) automatically infers the model architecture and downloads pretrained configuration and weights. Generally, we recommend using an `AutoClass` to produce checkpoint-agnostic code. But users who want more control over specific model parameters can create a custom 🤗 Transformers model from just a few base classes. This could be particularly useful for anyone who is interested in studying, training or experimenting with a 🤗 Transformers model. In this guide, dive deeper into creating a custom model without an `AutoClass`. Learn how to:
- Load and customize a model configuration.
- Create a model architecture.
- Create a slow and fast tokenizer for text.
- Create an image processor for vision tasks.
- Create a feature extractor for audio tasks.
- Create a processor for multimodal tasks.
## Configuration
A [configuration](main_classes/configuration) refers to a model's specific attributes. Each model configuration has different attributes; for instance, all NLP models have the `hidden_size`, `num_attention_heads`, `num_hidden_layers` and `vocab_size` attributes in common. These attributes specify the number of attention heads or hidden layers to construct a model with.
Get a closer look at [DistilBERT](model_doc/distilbert) by accessing [`DistilBertConfig`] to inspect it's attributes:
```py
>>> from transformers import DistilBertConfig
>>> config = DistilBertConfig()
>>> print(config)
DistilBertConfig {
"activation": "gelu",
"attention_dropout": 0.1,
"dim": 768,
"dropout": 0.1,
"hidden_dim": 3072,
"initializer_range": 0.02,
"max_position_embeddings": 512,
"model_type": "distilbert",
"n_heads": 12,
"n_layers": 6,
"pad_token_id": 0,
"qa_dropout": 0.1,
"seq_classif_dropout": 0.2,
"sinusoidal_pos_embds": false,
"transformers_version": "4.16.2",
"vocab_size": 30522
}
```
[`DistilBertConfig`] displays all the default attributes used to build a base [`DistilBertModel`]. All attributes are customizable, creating space for experimentation. For example, you can customize a default model to:
- Try a different activation function with the `activation` parameter.
- Use a higher dropout ratio for the attention probabilities with the `attention_dropout` parameter.
```py
>>> my_config = DistilBertConfig(activation="relu", attention_dropout=0.4)
>>> print(my_config)
DistilBertConfig {
"activation": "relu",
"attention_dropout": 0.4,
"dim": 768,
"dropout": 0.1,
"hidden_dim": 3072,
"initializer_range": 0.02,
"max_position_embeddings": 512,
"model_type": "distilbert",
"n_heads": 12,
"n_layers": 6,
"pad_token_id": 0,
"qa_dropout": 0.1,
"seq_classif_dropout": 0.2,
"sinusoidal_pos_embds": false,
"transformers_version": "4.16.2",
"vocab_size": 30522
}
```
Pretrained model attributes can be modified in the [`~PretrainedConfig.from_pretrained`] function:
```py
>>> my_config = DistilBertConfig.from_pretrained("distilbert/distilbert-base-uncased", activation="relu", attention_dropout=0.4)
```
Once you are satisfied with your model configuration, you can save it with [`~PretrainedConfig.save_pretrained`]. Your configuration file is stored as a JSON file in the specified save directory:
```py
>>> my_config.save_pretrained(save_directory="./your_model_save_path")
```
To reuse the configuration file, load it with [`~PretrainedConfig.from_pretrained`]:
```py
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/config.json")
```
<Tip>
You can also save your configuration file as a dictionary or even just the difference between your custom configuration attributes and the default configuration attributes! See the [configuration](main_classes/configuration) documentation for more details.
</Tip>
## Model
The next step is to create a [model](main_classes/models). The model - also loosely referred to as the architecture - defines what each layer is doing and what operations are happening. Attributes like `num_hidden_layers` from the configuration are used to define the architecture. Every model shares the base class [`PreTrainedModel`] and a few common methods like resizing input embeddings and pruning self-attention heads. In addition, all models are also either a [`torch.nn.Module`](https://pytorch.org/docs/stable/generated/torch.nn.Module.html), [`tf.keras.Model`](https://www.tensorflow.org/api_docs/python/tf/keras/Model) or [`flax.linen.Module`](https://flax.readthedocs.io/en/latest/api_reference/flax.linen/module.html) subclass. This means models are compatible with each of their respective framework's usage.
<frameworkcontent>
<pt>
Load your custom configuration attributes into the model:
```py
>>> from transformers import DistilBertModel
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/config.json")
>>> model = DistilBertModel(my_config)
```
This creates a model with random values instead of pretrained weights. You won't be able to use this model for anything useful yet until you train it. Training is a costly and time-consuming process. It is generally better to use a pretrained model to obtain better results faster, while using only a fraction of the resources required for training.
Create a pretrained model with [`~PreTrainedModel.from_pretrained`]:
```py
>>> model = DistilBertModel.from_pretrained("distilbert/distilbert-base-uncased")
```
When you load pretrained weights, the default model configuration is automatically loaded if the model is provided by 🤗 Transformers. However, you can still replace - some or all of - the default model configuration attributes with your own if you'd like:
```py
>>> model = DistilBertModel.from_pretrained("distilbert/distilbert-base-uncased", config=my_config)
```
</pt>
<tf>
Load your custom configuration attributes into the model:
```py
>>> from transformers import TFDistilBertModel
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/my_config.json")
>>> tf_model = TFDistilBertModel(my_config)
```
This creates a model with random values instead of pretrained weights. You won't be able to use this model for anything useful yet until you train it. Training is a costly and time-consuming process. It is generally better to use a pretrained model to obtain better results faster, while using only a fraction of the resources required for training.
Create a pretrained model with [`~TFPreTrainedModel.from_pretrained`]:
```py
>>> tf_model = TFDistilBertModel.from_pretrained("distilbert/distilbert-base-uncased")
```
When you load pretrained weights, the default model configuration is automatically loaded if the model is provided by 🤗 Transformers. However, you can still replace - some or all of - the default model configuration attributes with your own if you'd like:
```py
>>> tf_model = TFDistilBertModel.from_pretrained("distilbert/distilbert-base-uncased", config=my_config)
```
</tf>
</frameworkcontent>
### Model heads
At this point, you have a base DistilBERT model which outputs the *hidden states*. The hidden states are passed as inputs to a model head to produce the final output. 🤗 Transformers provides a different model head for each task as long as a model supports the task (i.e., you can't use DistilBERT for a sequence-to-sequence task like translation).
<frameworkcontent>
<pt>
For example, [`DistilBertForSequenceClassification`] is a base DistilBERT model with a sequence classification head. The sequence classification head is a linear layer on top of the pooled outputs.
```py
>>> from transformers import DistilBertForSequenceClassification
>>> model = DistilBertForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Easily reuse this checkpoint for another task by switching to a different model head. For a question answering task, you would use the [`DistilBertForQuestionAnswering`] model head. The question answering head is similar to the sequence classification head except it is a linear layer on top of the hidden states output.
```py
>>> from transformers import DistilBertForQuestionAnswering
>>> model = DistilBertForQuestionAnswering.from_pretrained("distilbert/distilbert-base-uncased")
```
</pt>
<tf>
For example, [`TFDistilBertForSequenceClassification`] is a base DistilBERT model with a sequence classification head. The sequence classification head is a linear layer on top of the pooled outputs.
```py
>>> from transformers import TFDistilBertForSequenceClassification
>>> tf_model = TFDistilBertForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Easily reuse this checkpoint for another task by switching to a different model head. For a question answering task, you would use the [`TFDistilBertForQuestionAnswering`] model head. The question answering head is similar to the sequence classification head except it is a linear layer on top of the hidden states output.
```py
>>> from transformers import TFDistilBertForQuestionAnswering
>>> tf_model = TFDistilBertForQuestionAnswering.from_pretrained("distilbert/distilbert-base-uncased")
```
</tf>
</frameworkcontent>
## Tokenizer
The last base class you need before using a model for textual data is a [tokenizer](main_classes/tokenizer) to convert raw text to tensors. There are two types of tokenizers you can use with 🤗 Transformers:
- [`PreTrainedTokenizer`]: a Python implementation of a tokenizer.
- [`PreTrainedTokenizerFast`]: a tokenizer from our Rust-based [🤗 Tokenizer](https://huggingface.co/docs/tokenizers/python/latest/) library. This tokenizer type is significantly faster - especially during batch tokenization - due to its Rust implementation. The fast tokenizer also offers additional methods like *offset mapping* which maps tokens to their original words or characters.
Both tokenizers support common methods such as encoding and decoding, adding new tokens, and managing special tokens.
<Tip warning={true}>
Not every model supports a fast tokenizer. Take a look at this [table](index#supported-frameworks) to check if a model has fast tokenizer support.
</Tip>
If you trained your own tokenizer, you can create one from your *vocabulary* file:
```py
>>> from transformers import DistilBertTokenizer
>>> my_tokenizer = DistilBertTokenizer(vocab_file="my_vocab_file.txt", do_lower_case=False, padding_side="left")
```
It is important to remember the vocabulary from a custom tokenizer will be different from the vocabulary generated by a pretrained model's tokenizer. You need to use a pretrained model's vocabulary if you are using a pretrained model, otherwise the inputs won't make sense. Create a tokenizer with a pretrained model's vocabulary with the [`DistilBertTokenizer`] class:
```py
>>> from transformers import DistilBertTokenizer
>>> slow_tokenizer = DistilBertTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
```
Create a fast tokenizer with the [`DistilBertTokenizerFast`] class:
```py
>>> from transformers import DistilBertTokenizerFast
>>> fast_tokenizer = DistilBertTokenizerFast.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip>
By default, [`AutoTokenizer`] will try to load a fast tokenizer. You can disable this behavior by setting `use_fast=False` in `from_pretrained`.
</Tip>
## Image processor
An image processor processes vision inputs. It inherits from the base [`~image_processing_utils.ImageProcessingMixin`] class.
To use, create an image processor associated with the model you're using. For example, create a default [`ViTImageProcessor`] if you are using [ViT](model_doc/vit) for image classification:
```py
>>> from transformers import ViTImageProcessor
>>> vit_extractor = ViTImageProcessor()
>>> print(vit_extractor)
ViTImageProcessor {
"do_normalize": true,
"do_resize": true,
"image_processor_type": "ViTImageProcessor",
"image_mean": [
0.5,
0.5,
0.5
],
"image_std": [
0.5,
0.5,
0.5
],
"resample": 2,
"size": 224
}
```
<Tip>
If you aren't looking for any customization, just use the `from_pretrained` method to load a model's default image processor parameters.
</Tip>
Modify any of the [`ViTImageProcessor`] parameters to create your custom image processor:
```py
>>> from transformers import ViTImageProcessor
>>> my_vit_extractor = ViTImageProcessor(resample="PIL.Image.BOX", do_normalize=False, image_mean=[0.3, 0.3, 0.3])
>>> print(my_vit_extractor)
ViTImageProcessor {
"do_normalize": false,
"do_resize": true,
"image_processor_type": "ViTImageProcessor",
"image_mean": [
0.3,
0.3,
0.3
],
"image_std": [
0.5,
0.5,
0.5
],
"resample": "PIL.Image.BOX",
"size": 224
}
```
## Backbone
<div style="text-align: center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/Backbone.png">
</div>
Computer vision models consist of a backbone, neck, and head. The backbone extracts features from an input image, the neck combines and enhances the extracted features, and the head is used for the main task (e.g., object detection). Start by initializing a backbone in the model config and specify whether you want to load pretrained weights or load randomly initialized weights. Then you can pass the model config to the model head.
For example, to load a [ResNet](../model_doc/resnet) backbone into a [MaskFormer](../model_doc/maskformer) model with an instance segmentation head:
<hfoptions id="backbone">
<hfoption id="pretrained weights">
Set `use_pretrained_backbone=True` to load pretrained ResNet weights for the backbone.
```py
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation
config = MaskFormerConfig(backbone="microsoft/resnet-50", use_pretrained_backbone=True) # backbone and neck config
model = MaskFormerForInstanceSegmentation(config) # head
```
</hfoption>
<hfoption id="random weights">
Set `use_pretrained_backbone=False` to randomly initialize a ResNet backbone.
```py
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation
config = MaskFormerConfig(backbone="microsoft/resnet-50", use_pretrained_backbone=False) # backbone and neck config
model = MaskFormerForInstanceSegmentation(config) # head
```
You could also load the backbone config separately and then pass it to the model config.
```py
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation, ResNetConfig
backbone_config = ResNetConfig()
config = MaskFormerConfig(backbone_config=backbone_config)
model = MaskFormerForInstanceSegmentation(config)
```
</hfoption>
</hfoptions id="timm backbone">
[timm](https://hf.co/docs/timm/index) models are loaded within a model with `use_timm_backbone=True` or with [`TimmBackbone`] and [`TimmBackboneConfig`].
Use `use_timm_backbone=True` and `use_pretrained_backbone=True` to load pretrained timm weights for the backbone.
```python
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation
config = MaskFormerConfig(backbone="resnet50", use_pretrained_backbone=True, use_timm_backbone=True) # backbone and neck config
model = MaskFormerForInstanceSegmentation(config) # head
```
Set `use_timm_backbone=True` and `use_pretrained_backbone=False` to load a randomly initialized timm backbone.
```python
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation
config = MaskFormerConfig(backbone="resnet50", use_pretrained_backbone=False, use_timm_backbone=True) # backbone and neck config
model = MaskFormerForInstanceSegmentation(config) # head
```
You could also load the backbone config and use it to create a `TimmBackbone` or pass it to the model config. Timm backbones will load pretrained weights by default. Set `use_pretrained_backbone=False` to load randomly initialized weights.
```python
from transformers import TimmBackboneConfig, TimmBackbone
backbone_config = TimmBackboneConfig("resnet50", use_pretrained_backbone=False)
# Create a backbone class
backbone = TimmBackbone(config=backbone_config)
# Create a model with a timm backbone
from transformers import MaskFormerConfig, MaskFormerForInstanceSegmentation
config = MaskFormerConfig(backbone_config=backbone_config)
model = MaskFormerForInstanceSegmentation(config)
```
## Feature extractor
A feature extractor processes audio inputs. It inherits from the base [`~feature_extraction_utils.FeatureExtractionMixin`] class, and may also inherit from the [`SequenceFeatureExtractor`] class for processing audio inputs.
To use, create a feature extractor associated with the model you're using. For example, create a default [`Wav2Vec2FeatureExtractor`] if you are using [Wav2Vec2](model_doc/wav2vec2) for audio classification:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> w2v2_extractor = Wav2Vec2FeatureExtractor()
>>> print(w2v2_extractor)
Wav2Vec2FeatureExtractor {
"do_normalize": true,
"feature_extractor_type": "Wav2Vec2FeatureExtractor",
"feature_size": 1,
"padding_side": "right",
"padding_value": 0.0,
"return_attention_mask": false,
"sampling_rate": 16000
}
```
<Tip>
If you aren't looking for any customization, just use the `from_pretrained` method to load a model's default feature extractor parameters.
</Tip>
Modify any of the [`Wav2Vec2FeatureExtractor`] parameters to create your custom feature extractor:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> w2v2_extractor = Wav2Vec2FeatureExtractor(sampling_rate=8000, do_normalize=False)
>>> print(w2v2_extractor)
Wav2Vec2FeatureExtractor {
"do_normalize": false,
"feature_extractor_type": "Wav2Vec2FeatureExtractor",
"feature_size": 1,
"padding_side": "right",
"padding_value": 0.0,
"return_attention_mask": false,
"sampling_rate": 8000
}
```
## Processor
For models that support multimodal tasks, 🤗 Transformers offers a processor class that conveniently wraps processing classes such as a feature extractor and a tokenizer into a single object. For example, let's use the [`Wav2Vec2Processor`] for an automatic speech recognition task (ASR). ASR transcribes audio to text, so you will need a feature extractor and a tokenizer.
Create a feature extractor to handle the audio inputs:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> feature_extractor = Wav2Vec2FeatureExtractor(padding_value=1.0, do_normalize=True)
```
Create a tokenizer to handle the text inputs:
```py
>>> from transformers import Wav2Vec2CTCTokenizer
>>> tokenizer = Wav2Vec2CTCTokenizer(vocab_file="my_vocab_file.txt")
```
Combine the feature extractor and tokenizer in [`Wav2Vec2Processor`]:
```py
>>> from transformers import Wav2Vec2Processor
>>> processor = Wav2Vec2Processor(feature_extractor=feature_extractor, tokenizer=tokenizer)
```
With two basic classes - configuration and model - and an additional preprocessing class (tokenizer, image processor, feature extractor, or processor), you can create any of the models supported by 🤗 Transformers. Each of these base classes are configurable, allowing you to use the specific attributes you want. You can easily setup a model for training or modify an existing pretrained model to fine-tune.
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"file_path": "transformers/docs/source/en/create_a_model.md",
"repo_id": "transformers",
"token_count": 5804
}
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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specific language governing permissions and limitations under the License.
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# Image Processor
An image processor is in charge of preparing input features for vision models and post processing their outputs. This includes transformations such as resizing, normalization, and conversion to PyTorch, TensorFlow, Flax and Numpy tensors. It may also include model specific post-processing such as converting logits to segmentation masks.
## ImageProcessingMixin
[[autodoc]] image_processing_utils.ImageProcessingMixin
- from_pretrained
- save_pretrained
## BatchFeature
[[autodoc]] BatchFeature
## BaseImageProcessor
[[autodoc]] image_processing_utils.BaseImageProcessor
## BaseImageProcessorFast
[[autodoc]] image_processing_utils_fast.BaseImageProcessorFast
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"file_path": "transformers/docs/source/en/main_classes/image_processor.md",
"repo_id": "transformers",
"token_count": 371
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# Audio Spectrogram Transformer
## Overview
The Audio Spectrogram Transformer model was proposed in [AST: Audio Spectrogram Transformer](https://arxiv.org/abs/2104.01778) by Yuan Gong, Yu-An Chung, James Glass.
The Audio Spectrogram Transformer applies a [Vision Transformer](vit) to audio, by turning audio into an image (spectrogram). The model obtains state-of-the-art results
for audio classification.
The abstract from the paper is the following:
*In the past decade, convolutional neural networks (CNNs) have been widely adopted as the main building block for end-to-end audio classification models, which aim to learn a direct mapping from audio spectrograms to corresponding labels. To better capture long-range global context, a recent trend is to add a self-attention mechanism on top of the CNN, forming a CNN-attention hybrid model. However, it is unclear whether the reliance on a CNN is necessary, and if neural networks purely based on attention are sufficient to obtain good performance in audio classification. In this paper, we answer the question by introducing the Audio Spectrogram Transformer (AST), the first convolution-free, purely attention-based model for audio classification. We evaluate AST on various audio classification benchmarks, where it achieves new state-of-the-art results of 0.485 mAP on AudioSet, 95.6% accuracy on ESC-50, and 98.1% accuracy on Speech Commands V2.*
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/audio_spectogram_transformer_architecture.png"
alt="drawing" width="600"/>
<small> Audio Spectrogram Transformer architecture. Taken from the <a href="https://arxiv.org/abs/2104.01778">original paper</a>.</small>
This model was contributed by [nielsr](https://huggingface.co/nielsr).
The original code can be found [here](https://github.com/YuanGongND/ast).
## Usage tips
- When fine-tuning the Audio Spectrogram Transformer (AST) on your own dataset, it's recommended to take care of the input normalization (to make
sure the input has mean of 0 and std of 0.5). [`ASTFeatureExtractor`] takes care of this. Note that it uses the AudioSet
mean and std by default. You can check [`ast/src/get_norm_stats.py`](https://github.com/YuanGongND/ast/blob/master/src/get_norm_stats.py) to see how
the authors compute the stats for a downstream dataset.
- Note that the AST needs a low learning rate (the authors use a 10 times smaller learning rate compared to their CNN model proposed in the
[PSLA paper](https://arxiv.org/abs/2102.01243)) and converges quickly, so please search for a suitable learning rate and learning rate scheduler for your task.
### Using Scaled Dot Product Attention (SDPA)
PyTorch includes a native scaled dot-product attention (SDPA) operator as part of `torch.nn.functional`. This function
encompasses several implementations that can be applied depending on the inputs and the hardware in use. See the
[official documentation](https://pytorch.org/docs/stable/generated/torch.nn.functional.scaled_dot_product_attention.html)
or the [GPU Inference](https://huggingface.co/docs/transformers/main/en/perf_infer_gpu_one#pytorch-scaled-dot-product-attention)
page for more information.
SDPA is used by default for `torch>=2.1.1` when an implementation is available, but you may also set
`attn_implementation="sdpa"` in `from_pretrained()` to explicitly request SDPA to be used.
```
from transformers import ASTForAudioClassification
model = ASTForAudioClassification.from_pretrained("MIT/ast-finetuned-audioset-10-10-0.4593", attn_implementation="sdpa", torch_dtype=torch.float16)
...
```
For the best speedups, we recommend loading the model in half-precision (e.g. `torch.float16` or `torch.bfloat16`).
On a local benchmark (A100-40GB, PyTorch 2.3.0, OS Ubuntu 22.04) with `float32` and `MIT/ast-finetuned-audioset-10-10-0.4593` model, we saw the following speedups during inference.
| Batch size | Average inference time (ms), eager mode | Average inference time (ms), sdpa model | Speed up, Sdpa / Eager (x) |
|--------------|-------------------------------------------|-------------------------------------------|------------------------------|
| 1 | 27 | 6 | 4.5 |
| 2 | 12 | 6 | 2 |
| 4 | 21 | 8 | 2.62 |
| 8 | 40 | 14 | 2.86 |
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with the Audio Spectrogram Transformer.
<PipelineTag pipeline="audio-classification"/>
- A notebook illustrating inference with AST for audio classification can be found [here](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/AST).
- [`ASTForAudioClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/audio-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/audio_classification.ipynb).
- See also: [Audio classification](../tasks/audio_classification).
If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
## ASTConfig
[[autodoc]] ASTConfig
## ASTFeatureExtractor
[[autodoc]] ASTFeatureExtractor
- __call__
## ASTModel
[[autodoc]] ASTModel
- forward
## ASTForAudioClassification
[[autodoc]] ASTForAudioClassification
- forward
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"file_path": "transformers/docs/source/en/model_doc/audio-spectrogram-transformer.md",
"repo_id": "transformers",
"token_count": 2176
}
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the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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-->
# Blenderbot Small
Note that [`BlenderbotSmallModel`] and
[`BlenderbotSmallForConditionalGeneration`] are only used in combination with the checkpoint
[facebook/blenderbot-90M](https://huggingface.co/facebook/blenderbot-90M). Larger Blenderbot checkpoints should
instead be used with [`BlenderbotModel`] and
[`BlenderbotForConditionalGeneration`]
## Overview
The Blender chatbot model was proposed in [Recipes for building an open-domain chatbot](https://arxiv.org/pdf/2004.13637.pdf) Stephen Roller, Emily Dinan, Naman Goyal, Da Ju, Mary Williamson, Yinhan Liu,
Jing Xu, Myle Ott, Kurt Shuster, Eric M. Smith, Y-Lan Boureau, Jason Weston on 30 Apr 2020.
The abstract of the paper is the following:
*Building open-domain chatbots is a challenging area for machine learning research. While prior work has shown that
scaling neural models in the number of parameters and the size of the data they are trained on gives improved results,
we show that other ingredients are important for a high-performing chatbot. Good conversation requires a number of
skills that an expert conversationalist blends in a seamless way: providing engaging talking points and listening to
their partners, and displaying knowledge, empathy and personality appropriately, while maintaining a consistent
persona. We show that large scale models can learn these skills when given appropriate training data and choice of
generation strategy. We build variants of these recipes with 90M, 2.7B and 9.4B parameter models, and make our models
and code publicly available. Human evaluations show our best models are superior to existing approaches in multi-turn
dialogue in terms of engagingness and humanness measurements. We then discuss the limitations of this work by analyzing
failure cases of our models.*
This model was contributed by [patrickvonplaten](https://huggingface.co/patrickvonplaten). The authors' code can be
found [here](https://github.com/facebookresearch/ParlAI).
## Usage tips
Blenderbot Small is a model with absolute position embeddings so it's usually advised to pad the inputs on the right rather than
the left.
## Resources
- [Causal language modeling task guide](../tasks/language_modeling)
- [Translation task guide](../tasks/translation)
- [Summarization task guide](../tasks/summarization)
## BlenderbotSmallConfig
[[autodoc]] BlenderbotSmallConfig
## BlenderbotSmallTokenizer
[[autodoc]] BlenderbotSmallTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## BlenderbotSmallTokenizerFast
[[autodoc]] BlenderbotSmallTokenizerFast
<frameworkcontent>
<pt>
## BlenderbotSmallModel
[[autodoc]] BlenderbotSmallModel
- forward
## BlenderbotSmallForConditionalGeneration
[[autodoc]] BlenderbotSmallForConditionalGeneration
- forward
## BlenderbotSmallForCausalLM
[[autodoc]] BlenderbotSmallForCausalLM
- forward
</pt>
<tf>
## TFBlenderbotSmallModel
[[autodoc]] TFBlenderbotSmallModel
- call
## TFBlenderbotSmallForConditionalGeneration
[[autodoc]] TFBlenderbotSmallForConditionalGeneration
- call
</tf>
<jax>
## FlaxBlenderbotSmallModel
[[autodoc]] FlaxBlenderbotSmallModel
- __call__
- encode
- decode
## FlaxBlenderbotForConditionalGeneration
[[autodoc]] FlaxBlenderbotSmallForConditionalGeneration
- __call__
- encode
- decode
</jax>
</frameworkcontent>
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"file_path": "transformers/docs/source/en/model_doc/blenderbot-small.md",
"repo_id": "transformers",
"token_count": 1170
}
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the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# CLVP
## Overview
The CLVP (Contrastive Language-Voice Pretrained Transformer) model was proposed in [Better speech synthesis through scaling](https://arxiv.org/abs/2305.07243) by James Betker.
The abstract from the paper is the following:
*In recent years, the field of image generation has been revolutionized by the application of autoregressive transformers and DDPMs. These approaches model the process of image generation as a step-wise probabilistic processes and leverage large amounts of compute and data to learn the image distribution. This methodology of improving performance need not be confined to images. This paper describes a way to apply advances in the image generative domain to speech synthesis. The result is TorToise - an expressive, multi-voice text-to-speech system.*
This model was contributed by [Susnato Dhar](https://huggingface.co/susnato).
The original code can be found [here](https://github.com/neonbjb/tortoise-tts).
## Usage tips
1. CLVP is an integral part of the Tortoise TTS model.
2. CLVP can be used to compare different generated speech candidates with the provided text, and the best speech tokens are forwarded to the diffusion model.
3. The use of the [`ClvpModelForConditionalGeneration.generate()`] method is strongly recommended for tortoise usage.
4. Note that the CLVP model expects the audio to be sampled at 22.05 kHz contrary to other audio models which expects 16 kHz.
## Brief Explanation:
- The [`ClvpTokenizer`] tokenizes the text input, and the [`ClvpFeatureExtractor`] extracts the log mel-spectrogram from the desired audio.
- [`ClvpConditioningEncoder`] takes those text tokens and audio representations and converts them into embeddings conditioned on the text and audio.
- The [`ClvpForCausalLM`] uses those embeddings to generate multiple speech candidates.
- Each speech candidate is passed through the speech encoder ([`ClvpEncoder`]) which converts them into a vector representation, and the text encoder ([`ClvpEncoder`]) converts the text tokens into the same latent space.
- At the end, we compare each speech vector with the text vector to see which speech vector is most similar to the text vector.
- [`ClvpModelForConditionalGeneration.generate()`] compresses all of the logic described above into a single method.
Example :
```python
>>> import datasets
>>> from transformers import ClvpProcessor, ClvpModelForConditionalGeneration
>>> # Define the Text and Load the Audio (We are taking an audio example from HuggingFace Hub using `datasets` library).
>>> text = "This is an example text."
>>> ds = datasets.load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
>>> ds = ds.cast_column("audio", datasets.Audio(sampling_rate=22050))
>>> sample = ds[0]["audio"]
>>> # Define processor and model.
>>> processor = ClvpProcessor.from_pretrained("susnato/clvp_dev")
>>> model = ClvpModelForConditionalGeneration.from_pretrained("susnato/clvp_dev")
>>> # Generate processor output and model output.
>>> processor_output = processor(raw_speech=sample["array"], sampling_rate=sample["sampling_rate"], text=text, return_tensors="pt")
>>> generated_output = model.generate(**processor_output)
```
## ClvpConfig
[[autodoc]] ClvpConfig
- from_sub_model_configs
## ClvpEncoderConfig
[[autodoc]] ClvpEncoderConfig
## ClvpDecoderConfig
[[autodoc]] ClvpDecoderConfig
## ClvpTokenizer
[[autodoc]] ClvpTokenizer
- save_vocabulary
## ClvpFeatureExtractor
[[autodoc]] ClvpFeatureExtractor
- __call__
## ClvpProcessor
[[autodoc]] ClvpProcessor
- __call__
- decode
- batch_decode
## ClvpModelForConditionalGeneration
[[autodoc]] ClvpModelForConditionalGeneration
- forward
- generate
- get_text_features
- get_speech_features
## ClvpForCausalLM
[[autodoc]] ClvpForCausalLM
## ClvpModel
[[autodoc]] ClvpModel
## ClvpEncoder
[[autodoc]] ClvpEncoder
## ClvpDecoder
[[autodoc]] ClvpDecoder
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"repo_id": "transformers",
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# DeBERTa
## Overview
The DeBERTa model was proposed in [DeBERTa: Decoding-enhanced BERT with Disentangled Attention](https://arxiv.org/abs/2006.03654) by Pengcheng He, Xiaodong Liu, Jianfeng Gao, Weizhu Chen It is based on Google's
BERT model released in 2018 and Facebook's RoBERTa model released in 2019.
It builds on RoBERTa with disentangled attention and enhanced mask decoder training with half of the data used in
RoBERTa.
The abstract from the paper is the following:
*Recent progress in pre-trained neural language models has significantly improved the performance of many natural
language processing (NLP) tasks. In this paper we propose a new model architecture DeBERTa (Decoding-enhanced BERT with
disentangled attention) that improves the BERT and RoBERTa models using two novel techniques. The first is the
disentangled attention mechanism, where each word is represented using two vectors that encode its content and
position, respectively, and the attention weights among words are computed using disentangled matrices on their
contents and relative positions. Second, an enhanced mask decoder is used to replace the output softmax layer to
predict the masked tokens for model pretraining. We show that these two techniques significantly improve the efficiency
of model pretraining and performance of downstream tasks. Compared to RoBERTa-Large, a DeBERTa model trained on half of
the training data performs consistently better on a wide range of NLP tasks, achieving improvements on MNLI by +0.9%
(90.2% vs. 91.1%), on SQuAD v2.0 by +2.3% (88.4% vs. 90.7%) and RACE by +3.6% (83.2% vs. 86.8%). The DeBERTa code and
pre-trained models will be made publicly available at https://github.com/microsoft/DeBERTa.*
This model was contributed by [DeBERTa](https://huggingface.co/DeBERTa). This model TF 2.0 implementation was
contributed by [kamalkraj](https://huggingface.co/kamalkraj) . The original code can be found [here](https://github.com/microsoft/DeBERTa).
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with DeBERTa. If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
<PipelineTag pipeline="text-classification"/>
- A blog post on how to [Accelerate Large Model Training using DeepSpeed](https://huggingface.co/blog/accelerate-deepspeed) with DeBERTa.
- A blog post on [Supercharged Customer Service with Machine Learning](https://huggingface.co/blog/supercharge-customer-service-with-machine-learning) with DeBERTa.
- [`DebertaForSequenceClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/text-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/text_classification.ipynb).
- [`TFDebertaForSequenceClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/text-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/text_classification-tf.ipynb).
- [Text classification task guide](../tasks/sequence_classification)
<PipelineTag pipeline="token-classification" />
- [`DebertaForTokenClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/token-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/token_classification.ipynb).
- [`TFDebertaForTokenClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/token-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/token_classification-tf.ipynb).
- [Token classification](https://huggingface.co/course/chapter7/2?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Byte-Pair Encoding tokenization](https://huggingface.co/course/chapter6/5?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Token classification task guide](../tasks/token_classification)
<PipelineTag pipeline="fill-mask"/>
- [`DebertaForMaskedLM`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/language-modeling#robertabertdistilbert-and-masked-language-modeling) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/language_modeling.ipynb).
- [`TFDebertaForMaskedLM`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/language-modeling#run_mlmpy) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/language_modeling-tf.ipynb).
- [Masked language modeling](https://huggingface.co/course/chapter7/3?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Masked language modeling task guide](../tasks/masked_language_modeling)
<PipelineTag pipeline="question-answering"/>
- [`DebertaForQuestionAnswering`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering.ipynb).
- [`TFDebertaForQuestionAnswering`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/question-answering) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering-tf.ipynb).
- [Question answering](https://huggingface.co/course/chapter7/7?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Question answering task guide](../tasks/question_answering)
## DebertaConfig
[[autodoc]] DebertaConfig
## DebertaTokenizer
[[autodoc]] DebertaTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## DebertaTokenizerFast
[[autodoc]] DebertaTokenizerFast
- build_inputs_with_special_tokens
- create_token_type_ids_from_sequences
<frameworkcontent>
<pt>
## DebertaModel
[[autodoc]] DebertaModel
- forward
## DebertaPreTrainedModel
[[autodoc]] DebertaPreTrainedModel
## DebertaForMaskedLM
[[autodoc]] DebertaForMaskedLM
- forward
## DebertaForSequenceClassification
[[autodoc]] DebertaForSequenceClassification
- forward
## DebertaForTokenClassification
[[autodoc]] DebertaForTokenClassification
- forward
## DebertaForQuestionAnswering
[[autodoc]] DebertaForQuestionAnswering
- forward
</pt>
<tf>
## TFDebertaModel
[[autodoc]] TFDebertaModel
- call
## TFDebertaPreTrainedModel
[[autodoc]] TFDebertaPreTrainedModel
- call
## TFDebertaForMaskedLM
[[autodoc]] TFDebertaForMaskedLM
- call
## TFDebertaForSequenceClassification
[[autodoc]] TFDebertaForSequenceClassification
- call
## TFDebertaForTokenClassification
[[autodoc]] TFDebertaForTokenClassification
- call
## TFDebertaForQuestionAnswering
[[autodoc]] TFDebertaForQuestionAnswering
- call
</tf>
</frameworkcontent>
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"repo_id": "transformers",
"token_count": 2499
}
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the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# FNet
## Overview
The FNet model was proposed in [FNet: Mixing Tokens with Fourier Transforms](https://arxiv.org/abs/2105.03824) by
James Lee-Thorp, Joshua Ainslie, Ilya Eckstein, Santiago Ontanon. The model replaces the self-attention layer in a BERT
model with a fourier transform which returns only the real parts of the transform. The model is significantly faster
than the BERT model because it has fewer parameters and is more memory efficient. The model achieves about 92-97%
accuracy of BERT counterparts on GLUE benchmark, and trains much faster than the BERT model. The abstract from the
paper is the following:
*We show that Transformer encoder architectures can be sped up, with limited accuracy costs, by replacing the
self-attention sublayers with simple linear transformations that "mix" input tokens. These linear mixers, along with
standard nonlinearities in feed-forward layers, prove competent at modeling semantic relationships in several text
classification tasks. Most surprisingly, we find that replacing the self-attention sublayer in a Transformer encoder
with a standard, unparameterized Fourier Transform achieves 92-97% of the accuracy of BERT counterparts on the GLUE
benchmark, but trains 80% faster on GPUs and 70% faster on TPUs at standard 512 input lengths. At longer input lengths,
our FNet model is significantly faster: when compared to the "efficient" Transformers on the Long Range Arena
benchmark, FNet matches the accuracy of the most accurate models, while outpacing the fastest models across all
sequence lengths on GPUs (and across relatively shorter lengths on TPUs). Finally, FNet has a light memory footprint
and is particularly efficient at smaller model sizes; for a fixed speed and accuracy budget, small FNet models
outperform Transformer counterparts.*
This model was contributed by [gchhablani](https://huggingface.co/gchhablani). The original code can be found [here](https://github.com/google-research/google-research/tree/master/f_net).
## Usage tips
The model was trained without an attention mask as it is based on Fourier Transform. The model was trained with
maximum sequence length 512 which includes pad tokens. Hence, it is highly recommended to use the same maximum
sequence length for fine-tuning and inference.
## Resources
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Question answering task guide](../tasks/question_answering)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Multiple choice task guide](../tasks/multiple_choice)
## FNetConfig
[[autodoc]] FNetConfig
## FNetTokenizer
[[autodoc]] FNetTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## FNetTokenizerFast
[[autodoc]] FNetTokenizerFast
## FNetModel
[[autodoc]] FNetModel
- forward
## FNetForPreTraining
[[autodoc]] FNetForPreTraining
- forward
## FNetForMaskedLM
[[autodoc]] FNetForMaskedLM
- forward
## FNetForNextSentencePrediction
[[autodoc]] FNetForNextSentencePrediction
- forward
## FNetForSequenceClassification
[[autodoc]] FNetForSequenceClassification
- forward
## FNetForMultipleChoice
[[autodoc]] FNetForMultipleChoice
- forward
## FNetForTokenClassification
[[autodoc]] FNetForTokenClassification
- forward
## FNetForQuestionAnswering
[[autodoc]] FNetForQuestionAnswering
- forward
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{
"file_path": "transformers/docs/source/en/model_doc/fnet.md",
"repo_id": "transformers",
"token_count": 1150
}
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# GPTSAN-japanese
<Tip warning={true}>
This model is in maintenance mode only, we don't accept any new PRs changing its code.
If you run into any issues running this model, please reinstall the last version that supported this model: v4.40.2.
You can do so by running the following command: `pip install -U transformers==4.40.2`.
</Tip>
## Overview
The GPTSAN-japanese model was released in the repository by Toshiyuki Sakamoto (tanreinama).
GPTSAN is a Japanese language model using Switch Transformer. It has the same structure as the model introduced as Prefix LM
in the T5 paper, and support both Text Generation and Masked Language Modeling tasks. These basic tasks similarly can
fine-tune for translation or summarization.
### Usage example
The `generate()` method can be used to generate text using GPTSAN-Japanese model.
```python
>>> from transformers import AutoModel, AutoTokenizer
>>> import torch
>>> tokenizer = AutoTokenizer.from_pretrained("Tanrei/GPTSAN-japanese")
>>> model = AutoModel.from_pretrained("Tanrei/GPTSAN-japanese").cuda()
>>> x_tok = tokenizer("は、", prefix_text="織田信長", return_tensors="pt")
>>> torch.manual_seed(0)
>>> gen_tok = model.generate(x_tok.input_ids.cuda(), token_type_ids=x_tok.token_type_ids.cuda(), max_new_tokens=20)
>>> tokenizer.decode(gen_tok[0])
'織田信長は、2004年に『戦国BASARA』のために、豊臣秀吉'
```
## GPTSAN Features
GPTSAN has some unique features. It has a model structure of Prefix-LM. It works as a shifted Masked Language Model for Prefix Input tokens. Un-prefixed inputs behave like normal generative models.
The Spout vector is a GPTSAN specific input. Spout is pre-trained with random inputs, but you can specify a class of text or an arbitrary vector during fine-tuning. This allows you to indicate the tendency of the generated text.
GPTSAN has a sparse Feed Forward based on Switch-Transformer. You can also add other layers and train them partially. See the original GPTSAN repository for details.
### Prefix-LM Model
GPTSAN has the structure of the model named Prefix-LM in the `T5` paper. (The original GPTSAN repository calls it `hybrid`)
In GPTSAN, the `Prefix` part of Prefix-LM, that is, the input position that can be referenced by both tokens, can be specified with any length.
Arbitrary lengths can also be specified differently for each batch.
This length applies to the text entered in `prefix_text` for the tokenizer.
The tokenizer returns the mask of the `Prefix` part of Prefix-LM as `token_type_ids`.
The model treats the part where `token_type_ids` is 1 as a `Prefix` part, that is, the input can refer to both tokens before and after.
## Usage tips
Specifying the Prefix part is done with a mask passed to self-attention.
When token_type_ids=None or all zero, it is equivalent to regular causal mask
for example:
>>> x_token = tokenizer("ｱｲｳｴ")
input_ids: | SOT | SEG | ｱ | ｲ | ｳ | ｴ |
token_type_ids: | 1 | 0 | 0 | 0 | 0 | 0 |
prefix_lm_mask:
SOT | 1 0 0 0 0 0 |
SEG | 1 1 0 0 0 0 |
ｱ | 1 1 1 0 0 0 |
ｲ | 1 1 1 1 0 0 |
ｳ | 1 1 1 1 1 0 |
ｴ | 1 1 1 1 1 1 |
>>> x_token = tokenizer("", prefix_text="ｱｲｳｴ")
input_ids: | SOT | ｱ | ｲ | ｳ | ｴ | SEG |
token_type_ids: | 1 | 1 | 1 | 1 | 1 | 0 |
prefix_lm_mask:
SOT | 1 1 1 1 1 0 |
ｱ | 1 1 1 1 1 0 |
ｲ | 1 1 1 1 1 0 |
ｳ | 1 1 1 1 1 0 |
ｴ | 1 1 1 1 1 0 |
SEG | 1 1 1 1 1 1 |
>>> x_token = tokenizer("ｳｴ", prefix_text="ｱｲ")
input_ids: | SOT | ｱ | ｲ | SEG | ｳ | ｴ |
token_type_ids: | 1 | 1 | 1 | 0 | 0 | 0 |
prefix_lm_mask:
SOT | 1 1 1 0 0 0 |
ｱ | 1 1 1 0 0 0 |
ｲ | 1 1 1 0 0 0 |
SEG | 1 1 1 1 0 0 |
ｳ | 1 1 1 1 1 0 |
ｴ | 1 1 1 1 1 1 |
### Spout Vector
A Spout Vector is a special vector for controlling text generation.
This vector is treated as the first embedding in self-attention to bring extraneous attention to the generated tokens.
In the pre-trained model published from `Tanrei/GPTSAN-japanese`, the Spout Vector is a 128-dimensional vector that passes through 8 fully connected layers in the model and is projected into the space acting as external attention.
The Spout Vector projected by the fully connected layer is split to be passed to all self-attentions.
## GPTSanJapaneseConfig
[[autodoc]] GPTSanJapaneseConfig
## GPTSanJapaneseTokenizer
[[autodoc]] GPTSanJapaneseTokenizer
## GPTSanJapaneseModel
[[autodoc]] GPTSanJapaneseModel
## GPTSanJapaneseForConditionalGeneration
[[autodoc]] GPTSanJapaneseForConditionalGeneration
- forward
|
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{
"file_path": "transformers/docs/source/en/model_doc/gptsan-japanese.md",
"repo_id": "transformers",
"token_count": 1750
}
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<!--Copyright 2024 JetMoe team and The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# JetMoe
## Overview
**JetMoe-8B** is an 8B Mixture-of-Experts (MoE) language model developed by [Yikang Shen](https://scholar.google.com.hk/citations?user=qff5rRYAAAAJ) and [MyShell](https://myshell.ai/).
JetMoe project aims to provide a LLaMA2-level performance and efficient language model with a limited budget.
To achieve this goal, JetMoe uses a sparsely activated architecture inspired by the [ModuleFormer](https://arxiv.org/abs/2306.04640).
Each JetMoe block consists of two MoE layers: Mixture of Attention Heads and Mixture of MLP Experts.
Given the input tokens, it activates a subset of its experts to process them.
This sparse activation schema enables JetMoe to achieve much better training throughput than similar size dense models.
The training throughput of JetMoe-8B is around 100B tokens per day on a cluster of 96 H100 GPUs with a straightforward 3-way pipeline parallelism strategy.
This model was contributed by [Yikang Shen](https://huggingface.co/YikangS).
## JetMoeConfig
[[autodoc]] JetMoeConfig
## JetMoeModel
[[autodoc]] JetMoeModel
- forward
## JetMoeForCausalLM
[[autodoc]] JetMoeForCausalLM
- forward
## JetMoeForSequenceClassification
[[autodoc]] JetMoeForSequenceClassification
- forward
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{
"file_path": "transformers/docs/source/en/model_doc/jetmoe.md",
"repo_id": "transformers",
"token_count": 568
}
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Longformer
<div class="flex flex-wrap space-x-1">
<a href="https://huggingface.co/models?filter=longformer">
<img alt="Models" src="https://img.shields.io/badge/All_model_pages-longformer-blueviolet">
</a>
<a href="https://huggingface.co/spaces/docs-demos/longformer-base-4096-finetuned-squadv1">
<img alt="Spaces" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue">
</a>
</div>
## Overview
The Longformer model was presented in [Longformer: The Long-Document Transformer](https://arxiv.org/pdf/2004.05150.pdf) by Iz Beltagy, Matthew E. Peters, Arman Cohan.
The abstract from the paper is the following:
*Transformer-based models are unable to process long sequences due to their self-attention operation, which scales
quadratically with the sequence length. To address this limitation, we introduce the Longformer with an attention
mechanism that scales linearly with sequence length, making it easy to process documents of thousands of tokens or
longer. Longformer's attention mechanism is a drop-in replacement for the standard self-attention and combines a local
windowed attention with a task motivated global attention. Following prior work on long-sequence transformers, we
evaluate Longformer on character-level language modeling and achieve state-of-the-art results on text8 and enwik8. In
contrast to most prior work, we also pretrain Longformer and finetune it on a variety of downstream tasks. Our
pretrained Longformer consistently outperforms RoBERTa on long document tasks and sets new state-of-the-art results on
WikiHop and TriviaQA.*
This model was contributed by [beltagy](https://huggingface.co/beltagy). The Authors' code can be found [here](https://github.com/allenai/longformer).
## Usage tips
- Since the Longformer is based on RoBERTa, it doesn't have `token_type_ids`. You don't need to indicate which
token belongs to which segment. Just separate your segments with the separation token `tokenizer.sep_token` (or
`</s>`).
- A transformer model replacing the attention matrices by sparse matrices to go faster. Often, the local context (e.g., what are the two tokens left and right?) is enough to take action for a given token. Some preselected input tokens are still given global attention, but the attention matrix has way less parameters, resulting in a speed-up. See the local attention section for more information.
## Longformer Self Attention
Longformer self attention employs self attention on both a "local" context and a "global" context. Most tokens only
attend "locally" to each other meaning that each token attends to its \\(\frac{1}{2} w\\) previous tokens and
\\(\frac{1}{2} w\\) succeeding tokens with \\(w\\) being the window length as defined in
`config.attention_window`. Note that `config.attention_window` can be of type `List` to define a
different \\(w\\) for each layer. A selected few tokens attend "globally" to all other tokens, as it is
conventionally done for all tokens in `BertSelfAttention`.
Note that "locally" and "globally" attending tokens are projected by different query, key and value matrices. Also note
that every "locally" attending token not only attends to tokens within its window \\(w\\), but also to all "globally"
attending tokens so that global attention is *symmetric*.
The user can define which tokens attend "locally" and which tokens attend "globally" by setting the tensor
`global_attention_mask` at run-time appropriately. All Longformer models employ the following logic for
`global_attention_mask`:
- 0: the token attends "locally",
- 1: the token attends "globally".
For more information please also refer to [`~LongformerModel.forward`] method.
Using Longformer self attention, the memory and time complexity of the query-key matmul operation, which usually
represents the memory and time bottleneck, can be reduced from \\(\mathcal{O}(n_s \times n_s)\\) to
\\(\mathcal{O}(n_s \times w)\\), with \\(n_s\\) being the sequence length and \\(w\\) being the average window
size. It is assumed that the number of "globally" attending tokens is insignificant as compared to the number of
"locally" attending tokens.
For more information, please refer to the official [paper](https://arxiv.org/pdf/2004.05150.pdf).
## Training
[`LongformerForMaskedLM`] is trained the exact same way [`RobertaForMaskedLM`] is
trained and should be used as follows:
```python
input_ids = tokenizer.encode("This is a sentence from [MASK] training data", return_tensors="pt")
mlm_labels = tokenizer.encode("This is a sentence from the training data", return_tensors="pt")
loss = model(input_ids, labels=input_ids, masked_lm_labels=mlm_labels)[0]
```
## Resources
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Question answering task guide](../tasks/question_answering)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Multiple choice task guide](../tasks/multiple_choice)
## LongformerConfig
[[autodoc]] LongformerConfig
## LongformerTokenizer
[[autodoc]] LongformerTokenizer
## LongformerTokenizerFast
[[autodoc]] LongformerTokenizerFast
## Longformer specific outputs
[[autodoc]] models.longformer.modeling_longformer.LongformerBaseModelOutput
[[autodoc]] models.longformer.modeling_longformer.LongformerBaseModelOutputWithPooling
[[autodoc]] models.longformer.modeling_longformer.LongformerMaskedLMOutput
[[autodoc]] models.longformer.modeling_longformer.LongformerQuestionAnsweringModelOutput
[[autodoc]] models.longformer.modeling_longformer.LongformerSequenceClassifierOutput
[[autodoc]] models.longformer.modeling_longformer.LongformerMultipleChoiceModelOutput
[[autodoc]] models.longformer.modeling_longformer.LongformerTokenClassifierOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerBaseModelOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerBaseModelOutputWithPooling
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerMaskedLMOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerQuestionAnsweringModelOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerSequenceClassifierOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerMultipleChoiceModelOutput
[[autodoc]] models.longformer.modeling_tf_longformer.TFLongformerTokenClassifierOutput
<frameworkcontent>
<pt>
## LongformerModel
[[autodoc]] LongformerModel
- forward
## LongformerForMaskedLM
[[autodoc]] LongformerForMaskedLM
- forward
## LongformerForSequenceClassification
[[autodoc]] LongformerForSequenceClassification
- forward
## LongformerForMultipleChoice
[[autodoc]] LongformerForMultipleChoice
- forward
## LongformerForTokenClassification
[[autodoc]] LongformerForTokenClassification
- forward
## LongformerForQuestionAnswering
[[autodoc]] LongformerForQuestionAnswering
- forward
</pt>
<tf>
## TFLongformerModel
[[autodoc]] TFLongformerModel
- call
## TFLongformerForMaskedLM
[[autodoc]] TFLongformerForMaskedLM
- call
## TFLongformerForQuestionAnswering
[[autodoc]] TFLongformerForQuestionAnswering
- call
## TFLongformerForSequenceClassification
[[autodoc]] TFLongformerForSequenceClassification
- call
## TFLongformerForTokenClassification
[[autodoc]] TFLongformerForTokenClassification
- call
## TFLongformerForMultipleChoice
[[autodoc]] TFLongformerForMultipleChoice
- call
</tf>
</frameworkcontent>
|
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{
"file_path": "transformers/docs/source/en/model_doc/longformer.md",
"repo_id": "transformers",
"token_count": 2395
}
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<!--Copyright 2021 NVIDIA Corporation and The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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-->
# MegatronBERT
## Overview
The MegatronBERT model was proposed in [Megatron-LM: Training Multi-Billion Parameter Language Models Using Model
Parallelism](https://arxiv.org/abs/1909.08053) by Mohammad Shoeybi, Mostofa Patwary, Raul Puri, Patrick LeGresley,
Jared Casper and Bryan Catanzaro.
The abstract from the paper is the following:
*Recent work in language modeling demonstrates that training large transformer models advances the state of the art in
Natural Language Processing applications. However, very large models can be quite difficult to train due to memory
constraints. In this work, we present our techniques for training very large transformer models and implement a simple,
efficient intra-layer model parallel approach that enables training transformer models with billions of parameters. Our
approach does not require a new compiler or library changes, is orthogonal and complimentary to pipeline model
parallelism, and can be fully implemented with the insertion of a few communication operations in native PyTorch. We
illustrate this approach by converging transformer based models up to 8.3 billion parameters using 512 GPUs. We sustain
15.1 PetaFLOPs across the entire application with 76% scaling efficiency when compared to a strong single GPU baseline
that sustains 39 TeraFLOPs, which is 30% of peak FLOPs. To demonstrate that large language models can further advance
the state of the art (SOTA), we train an 8.3 billion parameter transformer language model similar to GPT-2 and a 3.9
billion parameter model similar to BERT. We show that careful attention to the placement of layer normalization in
BERT-like models is critical to achieving increased performance as the model size grows. Using the GPT-2 model we
achieve SOTA results on the WikiText103 (10.8 compared to SOTA perplexity of 15.8) and LAMBADA (66.5% compared to SOTA
accuracy of 63.2%) datasets. Our BERT model achieves SOTA results on the RACE dataset (90.9% compared to SOTA accuracy
of 89.4%).*
This model was contributed by [jdemouth](https://huggingface.co/jdemouth). The original code can be found [here](https://github.com/NVIDIA/Megatron-LM).
That repository contains a multi-GPU and multi-node implementation of the Megatron Language models. In particular,
it contains a hybrid model parallel approach using "tensor parallel" and "pipeline parallel" techniques.
## Usage tips
We have provided pretrained [BERT-345M](https://ngc.nvidia.com/catalog/models/nvidia:megatron_bert_345m) checkpoints
for use to evaluate or finetuning downstream tasks.
To access these checkpoints, first [sign up](https://ngc.nvidia.com/signup) for and setup the NVIDIA GPU Cloud (NGC)
Registry CLI. Further documentation for downloading models can be found in the [NGC documentation](https://docs.nvidia.com/dgx/ngc-registry-cli-user-guide/index.html#topic_6_4_1).
Alternatively, you can directly download the checkpoints using:
BERT-345M-uncased:
```bash
wget --content-disposition https://api.ngc.nvidia.com/v2/models/nvidia/megatron_bert_345m/versions/v0.1_uncased/zip
-O megatron_bert_345m_v0_1_uncased.zip
```
BERT-345M-cased:
```bash
wget --content-disposition https://api.ngc.nvidia.com/v2/models/nvidia/megatron_bert_345m/versions/v0.1_cased/zip -O
megatron_bert_345m_v0_1_cased.zip
```
Once you have obtained the checkpoints from NVIDIA GPU Cloud (NGC), you have to convert them to a format that will
easily be loaded by Hugging Face Transformers and our port of the BERT code.
The following commands allow you to do the conversion. We assume that the folder `models/megatron_bert` contains
`megatron_bert_345m_v0_1_{cased, uncased}.zip` and that the commands are run from inside that folder:
```bash
python3 $PATH_TO_TRANSFORMERS/models/megatron_bert/convert_megatron_bert_checkpoint.py megatron_bert_345m_v0_1_uncased.zip
```
```bash
python3 $PATH_TO_TRANSFORMERS/models/megatron_bert/convert_megatron_bert_checkpoint.py megatron_bert_345m_v0_1_cased.zip
```
## Resources
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Question answering task guide](../tasks/question_answering)
- [Causal language modeling task guide](../tasks/language_modeling)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Multiple choice task guide](../tasks/multiple_choice)
## MegatronBertConfig
[[autodoc]] MegatronBertConfig
## MegatronBertModel
[[autodoc]] MegatronBertModel
- forward
## MegatronBertForMaskedLM
[[autodoc]] MegatronBertForMaskedLM
- forward
## MegatronBertForCausalLM
[[autodoc]] MegatronBertForCausalLM
- forward
## MegatronBertForNextSentencePrediction
[[autodoc]] MegatronBertForNextSentencePrediction
- forward
## MegatronBertForPreTraining
[[autodoc]] MegatronBertForPreTraining
- forward
## MegatronBertForSequenceClassification
[[autodoc]] MegatronBertForSequenceClassification
- forward
## MegatronBertForMultipleChoice
[[autodoc]] MegatronBertForMultipleChoice
- forward
## MegatronBertForTokenClassification
[[autodoc]] MegatronBertForTokenClassification
- forward
## MegatronBertForQuestionAnswering
[[autodoc]] MegatronBertForQuestionAnswering
- forward
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{
"file_path": "transformers/docs/source/en/model_doc/megatron-bert.md",
"repo_id": "transformers",
"token_count": 1735
}
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<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# MusicGen
## Overview
The MusicGen model was proposed in the paper [Simple and Controllable Music Generation](https://arxiv.org/abs/2306.05284)
by Jade Copet, Felix Kreuk, Itai Gat, Tal Remez, David Kant, Gabriel Synnaeve, Yossi Adi and Alexandre Défossez.
MusicGen is a single stage auto-regressive Transformer model capable of generating high-quality music samples conditioned
on text descriptions or audio prompts. The text descriptions are passed through a frozen text encoder model to obtain a
sequence of hidden-state representations. MusicGen is then trained to predict discrete audio tokens, or *audio codes*,
conditioned on these hidden-states. These audio tokens are then decoded using an audio compression model, such as EnCodec,
to recover the audio waveform.
Through an efficient token interleaving pattern, MusicGen does not require a self-supervised semantic representation of
the text/audio prompts, thus eliminating the need to cascade multiple models to predict a set of codebooks (e.g.
hierarchically or upsampling). Instead, it is able to generate all the codebooks in a single forward pass.
The abstract from the paper is the following:
*We tackle the task of conditional music generation. We introduce MusicGen, a single Language Model (LM) that operates
over several streams of compressed discrete music representation, i.e., tokens. Unlike prior work, MusicGen is comprised
of a single-stage transformer LM together with efficient token interleaving patterns, which eliminates the need for
cascading several models, e.g., hierarchically or upsampling. Following this approach, we demonstrate how MusicGen
can generate high-quality samples, while being conditioned on textual description or melodic features, allowing better
controls over the generated output. We conduct extensive empirical evaluation, considering both automatic and human
studies, showing the proposed approach is superior to the evaluated baselines on a standard text-to-music benchmark.
Through ablation studies, we shed light over the importance of each of the components comprising MusicGen.*
This model was contributed by [sanchit-gandhi](https://huggingface.co/sanchit-gandhi). The original code can be found
[here](https://github.com/facebookresearch/audiocraft). The pre-trained checkpoints can be found on the
[Hugging Face Hub](https://huggingface.co/models?sort=downloads&search=facebook%2Fmusicgen-).
## Usage tips
- After downloading the original checkpoints from [here](https://github.com/facebookresearch/audiocraft/blob/main/docs/MUSICGEN.md#importing--exporting-models) , you can convert them using the **conversion script** available at
`src/transformers/models/musicgen/convert_musicgen_transformers.py` with the following command:
```bash
python src/transformers/models/musicgen/convert_musicgen_transformers.py \
--checkpoint small --pytorch_dump_folder /output/path --safe_serialization
```
## Generation
MusicGen is compatible with two generation modes: greedy and sampling. In practice, sampling leads to significantly
better results than greedy, thus we encourage sampling mode to be used where possible. Sampling is enabled by default,
and can be explicitly specified by setting `do_sample=True` in the call to [`MusicgenForConditionalGeneration.generate`],
or by overriding the model's generation config (see below).
Generation is limited by the sinusoidal positional embeddings to 30 second inputs. Meaning, MusicGen cannot generate more
than 30 seconds of audio (1503 tokens), and input audio passed by Audio-Prompted Generation contributes to this limit so,
given an input of 20 seconds of audio, MusicGen cannot generate more than 10 seconds of additional audio.
Transformers supports both mono (1-channel) and stereo (2-channel) variants of MusicGen. The mono channel versions
generate a single set of codebooks. The stereo versions generate 2 sets of codebooks, 1 for each channel (left/right),
and each set of codebooks is decoded independently through the audio compression model. The audio streams for each
channel are combined to give the final stereo output.
### Unconditional Generation
The inputs for unconditional (or 'null') generation can be obtained through the method
[`MusicgenForConditionalGeneration.get_unconditional_inputs`]:
```python
>>> from transformers import MusicgenForConditionalGeneration
>>> model = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small")
>>> unconditional_inputs = model.get_unconditional_inputs(num_samples=1)
>>> audio_values = model.generate(**unconditional_inputs, do_sample=True, max_new_tokens=256)
```
The audio outputs are a three-dimensional Torch tensor of shape `(batch_size, num_channels, sequence_length)`. To listen
to the generated audio samples, you can either play them in an ipynb notebook:
```python
from IPython.display import Audio
sampling_rate = model.config.audio_encoder.sampling_rate
Audio(audio_values[0].numpy(), rate=sampling_rate)
```
Or save them as a `.wav` file using a third-party library, e.g. `scipy`:
```python
>>> import scipy
>>> sampling_rate = model.config.audio_encoder.sampling_rate
>>> scipy.io.wavfile.write("musicgen_out.wav", rate=sampling_rate, data=audio_values[0, 0].numpy())
```
### Text-Conditional Generation
The model can generate an audio sample conditioned on a text prompt through use of the [`MusicgenProcessor`] to pre-process
the inputs:
```python
>>> from transformers import AutoProcessor, MusicgenForConditionalGeneration
>>> processor = AutoProcessor.from_pretrained("facebook/musicgen-small")
>>> model = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small")
>>> inputs = processor(
... text=["80s pop track with bassy drums and synth", "90s rock song with loud guitars and heavy drums"],
... padding=True,
... return_tensors="pt",
... )
>>> audio_values = model.generate(**inputs, do_sample=True, guidance_scale=3, max_new_tokens=256)
```
The `guidance_scale` is used in classifier free guidance (CFG), setting the weighting between the conditional logits
(which are predicted from the text prompts) and the unconditional logits (which are predicted from an unconditional or
'null' prompt). Higher guidance scale encourages the model to generate samples that are more closely linked to the input
prompt, usually at the expense of poorer audio quality. CFG is enabled by setting `guidance_scale > 1`. For best results,
use `guidance_scale=3` (default).
### Audio-Prompted Generation
The same [`MusicgenProcessor`] can be used to pre-process an audio prompt that is used for audio continuation. In the
following example, we load an audio file using the 🤗 Datasets library, which can be pip installed through the command
below:
```bash
pip install --upgrade pip
pip install datasets[audio]
```
```python
>>> from transformers import AutoProcessor, MusicgenForConditionalGeneration
>>> from datasets import load_dataset
>>> processor = AutoProcessor.from_pretrained("facebook/musicgen-small")
>>> model = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small")
>>> dataset = load_dataset("sanchit-gandhi/gtzan", split="train", streaming=True)
>>> sample = next(iter(dataset))["audio"]
>>> # take the first half of the audio sample
>>> sample["array"] = sample["array"][: len(sample["array"]) // 2]
>>> inputs = processor(
... audio=sample["array"],
... sampling_rate=sample["sampling_rate"],
... text=["80s blues track with groovy saxophone"],
... padding=True,
... return_tensors="pt",
... )
>>> audio_values = model.generate(**inputs, do_sample=True, guidance_scale=3, max_new_tokens=256)
```
For batched audio-prompted generation, the generated `audio_values` can be post-processed to remove padding by using the
[`MusicgenProcessor`] class:
```python
>>> from transformers import AutoProcessor, MusicgenForConditionalGeneration
>>> from datasets import load_dataset
>>> processor = AutoProcessor.from_pretrained("facebook/musicgen-small")
>>> model = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small")
>>> dataset = load_dataset("sanchit-gandhi/gtzan", split="train", streaming=True)
>>> sample = next(iter(dataset))["audio"]
>>> # take the first quarter of the audio sample
>>> sample_1 = sample["array"][: len(sample["array"]) // 4]
>>> # take the first half of the audio sample
>>> sample_2 = sample["array"][: len(sample["array"]) // 2]
>>> inputs = processor(
... audio=[sample_1, sample_2],
... sampling_rate=sample["sampling_rate"],
... text=["80s blues track with groovy saxophone", "90s rock song with loud guitars and heavy drums"],
... padding=True,
... return_tensors="pt",
... )
>>> audio_values = model.generate(**inputs, do_sample=True, guidance_scale=3, max_new_tokens=256)
>>> # post-process to remove padding from the batched audio
>>> audio_values = processor.batch_decode(audio_values, padding_mask=inputs.padding_mask)
```
### Generation Configuration
The default parameters that control the generation process, such as sampling, guidance scale and number of generated
tokens, can be found in the model's generation config, and updated as desired:
```python
>>> from transformers import MusicgenForConditionalGeneration
>>> model = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small")
>>> # inspect the default generation config
>>> model.generation_config
>>> # increase the guidance scale to 4.0
>>> model.generation_config.guidance_scale = 4.0
>>> # decrease the max length to 256 tokens
>>> model.generation_config.max_length = 256
```
Note that any arguments passed to the generate method will **supersede** those in the generation config, so setting
`do_sample=False` in the call to generate will supersede the setting of `model.generation_config.do_sample` in the
generation config.
## Model Structure
The MusicGen model can be de-composed into three distinct stages:
1. Text encoder: maps the text inputs to a sequence of hidden-state representations. The pre-trained MusicGen models use a frozen text encoder from either T5 or Flan-T5
2. MusicGen decoder: a language model (LM) that auto-regressively generates audio tokens (or codes) conditional on the encoder hidden-state representations
3. Audio encoder/decoder: used to encode an audio prompt to use as prompt tokens, and recover the audio waveform from the audio tokens predicted by the decoder
Thus, the MusicGen model can either be used as a standalone decoder model, corresponding to the class [`MusicgenForCausalLM`],
or as a composite model that includes the text encoder and audio encoder/decoder, corresponding to the class
[`MusicgenForConditionalGeneration`]. If only the decoder needs to be loaded from the pre-trained checkpoint, it can be loaded by first
specifying the correct config, or be accessed through the `.decoder` attribute of the composite model:
```python
>>> from transformers import AutoConfig, MusicgenForCausalLM, MusicgenForConditionalGeneration
>>> # Option 1: get decoder config and pass to `.from_pretrained`
>>> decoder_config = AutoConfig.from_pretrained("facebook/musicgen-small").decoder
>>> decoder = MusicgenForCausalLM.from_pretrained("facebook/musicgen-small", **decoder_config)
>>> # Option 2: load the entire composite model, but only return the decoder
>>> decoder = MusicgenForConditionalGeneration.from_pretrained("facebook/musicgen-small").decoder
```
Since the text encoder and audio encoder/decoder models are frozen during training, the MusicGen decoder [`MusicgenForCausalLM`]
can be trained standalone on a dataset of encoder hidden-states and audio codes. For inference, the trained decoder can
be combined with the frozen text encoder and audio encoder/decoders to recover the composite [`MusicgenForConditionalGeneration`]
model.
Tips:
* MusicGen is trained on the 32kHz checkpoint of Encodec. You should ensure you use a compatible version of the Encodec model.
* Sampling mode tends to deliver better results than greedy - you can toggle sampling with the variable `do_sample` in the call to [`MusicgenForConditionalGeneration.generate`]
## MusicgenDecoderConfig
[[autodoc]] MusicgenDecoderConfig
## MusicgenConfig
[[autodoc]] MusicgenConfig
## MusicgenProcessor
[[autodoc]] MusicgenProcessor
## MusicgenModel
[[autodoc]] MusicgenModel
- forward
## MusicgenForCausalLM
[[autodoc]] MusicgenForCausalLM
- forward
## MusicgenForConditionalGeneration
[[autodoc]] MusicgenForConditionalGeneration
- forward
|
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{
"file_path": "transformers/docs/source/en/model_doc/musicgen.md",
"repo_id": "transformers",
"token_count": 3592
}
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# OWL-ViT
## Overview
The OWL-ViT (short for Vision Transformer for Open-World Localization) was proposed in [Simple Open-Vocabulary Object Detection with Vision Transformers](https://arxiv.org/abs/2205.06230) by Matthias Minderer, Alexey Gritsenko, Austin Stone, Maxim Neumann, Dirk Weissenborn, Alexey Dosovitskiy, Aravindh Mahendran, Anurag Arnab, Mostafa Dehghani, Zhuoran Shen, Xiao Wang, Xiaohua Zhai, Thomas Kipf, and Neil Houlsby. OWL-ViT is an open-vocabulary object detection network trained on a variety of (image, text) pairs. It can be used to query an image with one or multiple text queries to search for and detect target objects described in text.
The abstract from the paper is the following:
*Combining simple architectures with large-scale pre-training has led to massive improvements in image classification. For object detection, pre-training and scaling approaches are less well established, especially in the long-tailed and open-vocabulary setting, where training data is relatively scarce. In this paper, we propose a strong recipe for transferring image-text models to open-vocabulary object detection. We use a standard Vision Transformer architecture with minimal modifications, contrastive image-text pre-training, and end-to-end detection fine-tuning. Our analysis of the scaling properties of this setup shows that increasing image-level pre-training and model size yield consistent improvements on the downstream detection task. We provide the adaptation strategies and regularizations needed to attain very strong performance on zero-shot text-conditioned and one-shot image-conditioned object detection. Code and models are available on GitHub.*
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/owlvit_architecture.jpg"
alt="drawing" width="600"/>
<small> OWL-ViT architecture. Taken from the <a href="https://arxiv.org/abs/2205.06230">original paper</a>. </small>
This model was contributed by [adirik](https://huggingface.co/adirik). The original code can be found [here](https://github.com/google-research/scenic/tree/main/scenic/projects/owl_vit).
## Usage tips
OWL-ViT is a zero-shot text-conditioned object detection model. OWL-ViT uses [CLIP](clip) as its multi-modal backbone, with a ViT-like Transformer to get visual features and a causal language model to get the text features. To use CLIP for detection, OWL-ViT removes the final token pooling layer of the vision model and attaches a lightweight classification and box head to each transformer output token. Open-vocabulary classification is enabled by replacing the fixed classification layer weights with the class-name embeddings obtained from the text model. The authors first train CLIP from scratch and fine-tune it end-to-end with the classification and box heads on standard detection datasets using a bipartite matching loss. One or multiple text queries per image can be used to perform zero-shot text-conditioned object detection.
[`OwlViTImageProcessor`] can be used to resize (or rescale) and normalize images for the model and [`CLIPTokenizer`] is used to encode the text. [`OwlViTProcessor`] wraps [`OwlViTImageProcessor`] and [`CLIPTokenizer`] into a single instance to both encode the text and prepare the images. The following example shows how to perform object detection using [`OwlViTProcessor`] and [`OwlViTForObjectDetection`].
```python
>>> import requests
>>> from PIL import Image
>>> import torch
>>> from transformers import OwlViTProcessor, OwlViTForObjectDetection
>>> processor = OwlViTProcessor.from_pretrained("google/owlvit-base-patch32")
>>> model = OwlViTForObjectDetection.from_pretrained("google/owlvit-base-patch32")
>>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> texts = [["a photo of a cat", "a photo of a dog"]]
>>> inputs = processor(text=texts, images=image, return_tensors="pt")
>>> outputs = model(**inputs)
>>> # Target image sizes (height, width) to rescale box predictions [batch_size, 2]
>>> target_sizes = torch.Tensor([image.size[::-1]])
>>> # Convert outputs (bounding boxes and class logits) to Pascal VOC format (xmin, ymin, xmax, ymax)
>>> results = processor.post_process_object_detection(outputs=outputs, target_sizes=target_sizes, threshold=0.1)
>>> i = 0 # Retrieve predictions for the first image for the corresponding text queries
>>> text = texts[i]
>>> boxes, scores, labels = results[i]["boxes"], results[i]["scores"], results[i]["labels"]
>>> for box, score, label in zip(boxes, scores, labels):
... box = [round(i, 2) for i in box.tolist()]
... print(f"Detected {text[label]} with confidence {round(score.item(), 3)} at location {box}")
Detected a photo of a cat with confidence 0.707 at location [324.97, 20.44, 640.58, 373.29]
Detected a photo of a cat with confidence 0.717 at location [1.46, 55.26, 315.55, 472.17]
```
## Resources
A demo notebook on using OWL-ViT for zero- and one-shot (image-guided) object detection can be found [here](https://github.com/huggingface/notebooks/blob/main/examples/zeroshot_object_detection_with_owlvit.ipynb).
## OwlViTConfig
[[autodoc]] OwlViTConfig
- from_text_vision_configs
## OwlViTTextConfig
[[autodoc]] OwlViTTextConfig
## OwlViTVisionConfig
[[autodoc]] OwlViTVisionConfig
## OwlViTImageProcessor
[[autodoc]] OwlViTImageProcessor
- preprocess
- post_process_object_detection
- post_process_image_guided_detection
## OwlViTFeatureExtractor
[[autodoc]] OwlViTFeatureExtractor
- __call__
- post_process
- post_process_image_guided_detection
## OwlViTProcessor
[[autodoc]] OwlViTProcessor
## OwlViTModel
[[autodoc]] OwlViTModel
- forward
- get_text_features
- get_image_features
## OwlViTTextModel
[[autodoc]] OwlViTTextModel
- forward
## OwlViTVisionModel
[[autodoc]] OwlViTVisionModel
- forward
## OwlViTForObjectDetection
[[autodoc]] OwlViTForObjectDetection
- forward
- image_guided_detection
|
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{
"file_path": "transformers/docs/source/en/model_doc/owlvit.md",
"repo_id": "transformers",
"token_count": 1986
}
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the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Pyramid Vision Transformer (PVT)
## Overview
The PVT model was proposed in
[Pyramid Vision Transformer: A Versatile Backbone for Dense Prediction without Convolutions](https://arxiv.org/abs/2102.12122)
by Wenhai Wang, Enze Xie, Xiang Li, Deng-Ping Fan, Kaitao Song, Ding Liang, Tong Lu, Ping Luo, Ling Shao. The PVT is a type of
vision transformer that utilizes a pyramid structure to make it an effective backbone for dense prediction tasks. Specifically
it allows for more fine-grained inputs (4 x 4 pixels per patch) to be used, while simultaneously shrinking the sequence length
of the Transformer as it deepens - reducing the computational cost. Additionally, a spatial-reduction attention (SRA) layer
is used to further reduce the resource consumption when learning high-resolution features.
The abstract from the paper is the following:
*Although convolutional neural networks (CNNs) have achieved great success in computer vision, this work investigates a
simpler, convolution-free backbone network useful for many dense prediction tasks. Unlike the recently proposed Vision
Transformer (ViT) that was designed for image classification specifically, we introduce the Pyramid Vision Transformer
(PVT), which overcomes the difficulties of porting Transformer to various dense prediction tasks. PVT has several
merits compared to current state of the arts. Different from ViT that typically yields low resolution outputs and
incurs high computational and memory costs, PVT not only can be trained on dense partitions of an image to achieve high
output resolution, which is important for dense prediction, but also uses a progressive shrinking pyramid to reduce the
computations of large feature maps. PVT inherits the advantages of both CNN and Transformer, making it a unified
backbone for various vision tasks without convolutions, where it can be used as a direct replacement for CNN backbones.
We validate PVT through extensive experiments, showing that it boosts the performance of many downstream tasks, including
object detection, instance and semantic segmentation. For example, with a comparable number of parameters, PVT+RetinaNet
achieves 40.4 AP on the COCO dataset, surpassing ResNet50+RetinNet (36.3 AP) by 4.1 absolute AP (see Figure 2). We hope
that PVT could serve as an alternative and useful backbone for pixel-level predictions and facilitate future research.*
This model was contributed by [Xrenya](https://huggingface.co/Xrenya). The original code can be found [here](https://github.com/whai362/PVT).
- PVTv1 on ImageNet-1K
| **Model variant** |**Size** |**Acc@1**|**Params (M)**|
|--------------------|:-------:|:-------:|:------------:|
| PVT-Tiny | 224 | 75.1 | 13.2 |
| PVT-Small | 224 | 79.8 | 24.5 |
| PVT-Medium | 224 | 81.2 | 44.2 |
| PVT-Large | 224 | 81.7 | 61.4 |
## PvtConfig
[[autodoc]] PvtConfig
## PvtImageProcessor
[[autodoc]] PvtImageProcessor
- preprocess
## PvtForImageClassification
[[autodoc]] PvtForImageClassification
- forward
## PvtModel
[[autodoc]] PvtModel
- forward
|
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{
"file_path": "transformers/docs/source/en/model_doc/pvt.md",
"repo_id": "transformers",
"token_count": 1047
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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# RoBERTa
<div class="flex flex-wrap space-x-1">
<a href="https://huggingface.co/models?filter=roberta">
<img alt="Models" src="https://img.shields.io/badge/All_model_pages-roberta-blueviolet">
</a>
<a href="https://huggingface.co/spaces/docs-demos/roberta-base">
<img alt="Spaces" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue">
</a>
<a href="https://huggingface.co/papers/1907.11692">
<img alt="Paper page" src="https://img.shields.io/badge/Paper%20page-1907.11692-green">
</a>
</div>
## Overview
The RoBERTa model was proposed in [RoBERTa: A Robustly Optimized BERT Pretraining Approach](https://arxiv.org/abs/1907.11692) by Yinhan Liu, [Myle Ott](https://huggingface.co/myleott), Naman Goyal, Jingfei Du, Mandar Joshi, Danqi Chen, Omer
Levy, Mike Lewis, Luke Zettlemoyer, Veselin Stoyanov. It is based on Google's BERT model released in 2018.
It builds on BERT and modifies key hyperparameters, removing the next-sentence pretraining objective and training with
much larger mini-batches and learning rates.
The abstract from the paper is the following:
*Language model pretraining has led to significant performance gains but careful comparison between different
approaches is challenging. Training is computationally expensive, often done on private datasets of different sizes,
and, as we will show, hyperparameter choices have significant impact on the final results. We present a replication
study of BERT pretraining (Devlin et al., 2019) that carefully measures the impact of many key hyperparameters and
training data size. We find that BERT was significantly undertrained, and can match or exceed the performance of every
model published after it. Our best model achieves state-of-the-art results on GLUE, RACE and SQuAD. These results
highlight the importance of previously overlooked design choices, and raise questions about the source of recently
reported improvements. We release our models and code.*
This model was contributed by [julien-c](https://huggingface.co/julien-c). The original code can be found [here](https://github.com/pytorch/fairseq/tree/master/examples/roberta).
## Usage tips
- This implementation is the same as [`BertModel`] with a minor tweak to the embeddings, as well as a setup
for RoBERTa pretrained models.
- RoBERTa has the same architecture as BERT but uses a byte-level BPE as a tokenizer (same as GPT-2) and uses a
different pretraining scheme.
- RoBERTa doesn't have `token_type_ids`, so you don't need to indicate which token belongs to which segment. Just
separate your segments with the separation token `tokenizer.sep_token` (or `</s>`).
- RoBERTa is similar to BERT but with better pretraining techniques:
* Dynamic masking: tokens are masked differently at each epoch, whereas BERT does it once and for all.
* Sentence packing: Sentences are packed together to reach 512 tokens (so the sentences are in an order that may span several documents).
* Larger batches: Training uses larger batches.
* Byte-level BPE vocabulary: Uses BPE with bytes as a subunit instead of characters, accommodating Unicode characters.
- [CamemBERT](camembert) is a wrapper around RoBERTa. Refer to its model page for usage examples.
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with RoBERTa. If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
<PipelineTag pipeline="text-classification"/>
- A blog on [Getting Started with Sentiment Analysis on Twitter](https://huggingface.co/blog/sentiment-analysis-twitter) using RoBERTa and the [Inference API](https://huggingface.co/inference-api).
- A blog on [Opinion Classification with Kili and Hugging Face AutoTrain](https://huggingface.co/blog/opinion-classification-with-kili) using RoBERTa.
- A notebook on how to [finetune RoBERTa for sentiment analysis](https://colab.research.google.com/github/DhavalTaunk08/NLP_scripts/blob/master/sentiment_analysis_using_roberta.ipynb). 🌎
- [`RobertaForSequenceClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/text-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/text_classification.ipynb).
- [`TFRobertaForSequenceClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/text-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/text_classification-tf.ipynb).
- [`FlaxRobertaForSequenceClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/flax/text-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/text_classification_flax.ipynb).
- [Text classification task guide](../tasks/sequence_classification)
<PipelineTag pipeline="token-classification"/>
- [`RobertaForTokenClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/token-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/token_classification.ipynb).
- [`TFRobertaForTokenClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/token-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/token_classification-tf.ipynb).
- [`FlaxRobertaForTokenClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/flax/token-classification).
- [Token classification](https://huggingface.co/course/chapter7/2?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Token classification task guide](../tasks/token_classification)
<PipelineTag pipeline="fill-mask"/>
- A blog on [How to train a new language model from scratch using Transformers and Tokenizers](https://huggingface.co/blog/how-to-train) with RoBERTa.
- [`RobertaForMaskedLM`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/language-modeling#robertabertdistilbert-and-masked-language-modeling) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/language_modeling.ipynb).
- [`TFRobertaForMaskedLM`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/language-modeling#run_mlmpy) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/language_modeling-tf.ipynb).
- [`FlaxRobertaForMaskedLM`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/flax/language-modeling#masked-language-modeling) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/masked_language_modeling_flax.ipynb).
- [Masked language modeling](https://huggingface.co/course/chapter7/3?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Masked language modeling task guide](../tasks/masked_language_modeling)
<PipelineTag pipeline="question-answering"/>
- A blog on [Accelerated Inference with Optimum and Transformers Pipelines](https://huggingface.co/blog/optimum-inference) with RoBERTa for question answering.
- [`RobertaForQuestionAnswering`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering.ipynb).
- [`TFRobertaForQuestionAnswering`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/question-answering) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/question_answering-tf.ipynb).
- [`FlaxRobertaForQuestionAnswering`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/flax/question-answering).
- [Question answering](https://huggingface.co/course/chapter7/7?fw=pt) chapter of the 🤗 Hugging Face Course.
- [Question answering task guide](../tasks/question_answering)
**Multiple choice**
- [`RobertaForMultipleChoice`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/multiple-choice) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/multiple_choice.ipynb).
- [`TFRobertaForMultipleChoice`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/tensorflow/multiple-choice) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/multiple_choice-tf.ipynb).
- [Multiple choice task guide](../tasks/multiple_choice)
## RobertaConfig
[[autodoc]] RobertaConfig
## RobertaTokenizer
[[autodoc]] RobertaTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## RobertaTokenizerFast
[[autodoc]] RobertaTokenizerFast
- build_inputs_with_special_tokens
<frameworkcontent>
<pt>
## RobertaModel
[[autodoc]] RobertaModel
- forward
## RobertaForCausalLM
[[autodoc]] RobertaForCausalLM
- forward
## RobertaForMaskedLM
[[autodoc]] RobertaForMaskedLM
- forward
## RobertaForSequenceClassification
[[autodoc]] RobertaForSequenceClassification
- forward
## RobertaForMultipleChoice
[[autodoc]] RobertaForMultipleChoice
- forward
## RobertaForTokenClassification
[[autodoc]] RobertaForTokenClassification
- forward
## RobertaForQuestionAnswering
[[autodoc]] RobertaForQuestionAnswering
- forward
</pt>
<tf>
## TFRobertaModel
[[autodoc]] TFRobertaModel
- call
## TFRobertaForCausalLM
[[autodoc]] TFRobertaForCausalLM
- call
## TFRobertaForMaskedLM
[[autodoc]] TFRobertaForMaskedLM
- call
## TFRobertaForSequenceClassification
[[autodoc]] TFRobertaForSequenceClassification
- call
## TFRobertaForMultipleChoice
[[autodoc]] TFRobertaForMultipleChoice
- call
## TFRobertaForTokenClassification
[[autodoc]] TFRobertaForTokenClassification
- call
## TFRobertaForQuestionAnswering
[[autodoc]] TFRobertaForQuestionAnswering
- call
</tf>
<jax>
## FlaxRobertaModel
[[autodoc]] FlaxRobertaModel
- __call__
## FlaxRobertaForCausalLM
[[autodoc]] FlaxRobertaForCausalLM
- __call__
## FlaxRobertaForMaskedLM
[[autodoc]] FlaxRobertaForMaskedLM
- __call__
## FlaxRobertaForSequenceClassification
[[autodoc]] FlaxRobertaForSequenceClassification
- __call__
## FlaxRobertaForMultipleChoice
[[autodoc]] FlaxRobertaForMultipleChoice
- __call__
## FlaxRobertaForTokenClassification
[[autodoc]] FlaxRobertaForTokenClassification
- __call__
## FlaxRobertaForQuestionAnswering
[[autodoc]] FlaxRobertaForQuestionAnswering
- __call__
</jax>
</frameworkcontent>
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"repo_id": "transformers",
"token_count": 3812
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Time Series Transformer
## Overview
The Time Series Transformer model is a vanilla encoder-decoder Transformer for time series forecasting.
This model was contributed by [kashif](https://huggingface.co/kashif).
## Usage tips
- Similar to other models in the library, [`TimeSeriesTransformerModel`] is the raw Transformer without any head on top, and [`TimeSeriesTransformerForPrediction`]
adds a distribution head on top of the former, which can be used for time-series forecasting. Note that this is a so-called probabilistic forecasting model, not a
point forecasting model. This means that the model learns a distribution, from which one can sample. The model doesn't directly output values.
- [`TimeSeriesTransformerForPrediction`] consists of 2 blocks: an encoder, which takes a `context_length` of time series values as input (called `past_values`),
and a decoder, which predicts a `prediction_length` of time series values into the future (called `future_values`). During training, one needs to provide
pairs of (`past_values` and `future_values`) to the model.
- In addition to the raw (`past_values` and `future_values`), one typically provides additional features to the model. These can be the following:
- `past_time_features`: temporal features which the model will add to `past_values`. These serve as "positional encodings" for the Transformer encoder.
Examples are "day of the month", "month of the year", etc. as scalar values (and then stacked together as a vector).
e.g. if a given time-series value was obtained on the 11th of August, then one could have [11, 8] as time feature vector (11 being "day of the month", 8 being "month of the year").
- `future_time_features`: temporal features which the model will add to `future_values`. These serve as "positional encodings" for the Transformer decoder.
Examples are "day of the month", "month of the year", etc. as scalar values (and then stacked together as a vector).
e.g. if a given time-series value was obtained on the 11th of August, then one could have [11, 8] as time feature vector (11 being "day of the month", 8 being "month of the year").
- `static_categorical_features`: categorical features which are static over time (i.e., have the same value for all `past_values` and `future_values`).
An example here is the store ID or region ID that identifies a given time-series.
Note that these features need to be known for ALL data points (also those in the future).
- `static_real_features`: real-valued features which are static over time (i.e., have the same value for all `past_values` and `future_values`).
An example here is the image representation of the product for which you have the time-series values (like the [ResNet](resnet) embedding of a "shoe" picture,
if your time-series is about the sales of shoes).
Note that these features need to be known for ALL data points (also those in the future).
- The model is trained using "teacher-forcing", similar to how a Transformer is trained for machine translation. This means that, during training, one shifts the
`future_values` one position to the right as input to the decoder, prepended by the last value of `past_values`. At each time step, the model needs to predict the
next target. So the set-up of training is similar to a GPT model for language, except that there's no notion of `decoder_start_token_id` (we just use the last value
of the context as initial input for the decoder).
- At inference time, we give the final value of the `past_values` as input to the decoder. Next, we can sample from the model to make a prediction at the next time step,
which is then fed to the decoder in order to make the next prediction (also called autoregressive generation).
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started. If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
- Check out the Time Series Transformer blog-post in HuggingFace blog: [Probabilistic Time Series Forecasting with 🤗 Transformers](https://huggingface.co/blog/time-series-transformers)
## TimeSeriesTransformerConfig
[[autodoc]] TimeSeriesTransformerConfig
## TimeSeriesTransformerModel
[[autodoc]] TimeSeriesTransformerModel
- forward
## TimeSeriesTransformerForPrediction
[[autodoc]] TimeSeriesTransformerForPrediction
- forward
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{
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"repo_id": "transformers",
"token_count": 1371
}
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<!--Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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# Wav2Vec2
## Overview
The Wav2Vec2 model was proposed in [wav2vec 2.0: A Framework for Self-Supervised Learning of Speech Representations](https://arxiv.org/abs/2006.11477) by Alexei Baevski, Henry Zhou, Abdelrahman Mohamed, Michael Auli.
The abstract from the paper is the following:
*We show for the first time that learning powerful representations from speech audio alone followed by fine-tuning on
transcribed speech can outperform the best semi-supervised methods while being conceptually simpler. wav2vec 2.0 masks
the speech input in the latent space and solves a contrastive task defined over a quantization of the latent
representations which are jointly learned. Experiments using all labeled data of Librispeech achieve 1.8/3.3 WER on the
clean/other test sets. When lowering the amount of labeled data to one hour, wav2vec 2.0 outperforms the previous state
of the art on the 100 hour subset while using 100 times less labeled data. Using just ten minutes of labeled data and
pre-training on 53k hours of unlabeled data still achieves 4.8/8.2 WER. This demonstrates the feasibility of speech
recognition with limited amounts of labeled data.*
This model was contributed by [patrickvonplaten](https://huggingface.co/patrickvonplaten).
Note: Meta (FAIR) released a new version of [Wav2Vec2-BERT 2.0](https://huggingface.co/docs/transformers/en/model_doc/wav2vec2-bert) - it's pretrained on 4.5M hours of audio. We especially recommend using it for fine-tuning tasks, e.g. as per [this guide](https://huggingface.co/blog/fine-tune-w2v2-bert).
## Usage tips
- Wav2Vec2 is a speech model that accepts a float array corresponding to the raw waveform of the speech signal.
- Wav2Vec2 model was trained using connectionist temporal classification (CTC) so the model output has to be decoded
using [`Wav2Vec2CTCTokenizer`].
## Using Flash Attention 2
Flash Attention 2 is an faster, optimized version of the model.
### Installation
First, check whether your hardware is compatible with Flash Attention 2. The latest list of compatible hardware can be found in the [official documentation](https://github.com/Dao-AILab/flash-attention#installation-and-features). If your hardware is not compatible with Flash Attention 2, you can still benefit from attention kernel optimisations through Better Transformer support covered [above](https://huggingface.co/docs/transformers/main/en/model_doc/bark#using-better-transformer).
Next, [install](https://github.com/Dao-AILab/flash-attention#installation-and-features) the latest version of Flash Attention 2:
```bash
pip install -U flash-attn --no-build-isolation
```
### Usage
To load a model using Flash Attention 2, we can pass the argument `attn_implementation="flash_attention_2"` to [`.from_pretrained`](https://huggingface.co/docs/transformers/main/en/main_classes/model#transformers.PreTrainedModel.from_pretrained). We'll also load the model in half-precision (e.g. `torch.float16`), since it results in almost no degradation to audio quality but significantly lower memory usage and faster inference:
```python
>>> from transformers import Wav2Vec2Model
model = Wav2Vec2Model.from_pretrained("facebook/wav2vec2-large-960h-lv60-self", torch_dtype=torch.float16, attn_implementation="flash_attention_2").to(device)
...
```
### Expected speedups
Below is an expected speedup diagram comparing the pure inference time between the native implementation in transformers of the `facebook/wav2vec2-large-960h-lv60-self` model and the flash-attention-2 and sdpa (scale-dot-product-attention) versions. . We show the average speedup obtained on the `librispeech_asr` `clean` validation split:
<div style="text-align: center">
<img src="https://huggingface.co/datasets/kamilakesbi/transformers_image_doc/resolve/main/data/Wav2Vec2_speedup.png">
</div>
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with Wav2Vec2. If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
<PipelineTag pipeline="audio-classification"/>
- A notebook on how to [leverage a pretrained Wav2Vec2 model for emotion classification](https://colab.research.google.com/github/m3hrdadfi/soxan/blob/main/notebooks/Emotion_recognition_in_Greek_speech_using_Wav2Vec2.ipynb). 🌎
- [`Wav2Vec2ForCTC`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/audio-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/audio_classification.ipynb).
- [Audio classification task guide](../tasks/audio_classification)
<PipelineTag pipeline="automatic-speech-recognition"/>
- A blog post on [boosting Wav2Vec2 with n-grams in 🤗 Transformers](https://huggingface.co/blog/wav2vec2-with-ngram).
- A blog post on how to [finetune Wav2Vec2 for English ASR with 🤗 Transformers](https://huggingface.co/blog/fine-tune-wav2vec2-english).
- A blog post on [finetuning XLS-R for Multi-Lingual ASR with 🤗 Transformers](https://huggingface.co/blog/fine-tune-xlsr-wav2vec2).
- A notebook on how to [create YouTube captions from any video by transcribing audio with Wav2Vec2](https://colab.research.google.com/github/Muennighoff/ytclipcc/blob/main/wav2vec_youtube_captions.ipynb). 🌎
- [`Wav2Vec2ForCTC`] is supported by a notebook on [how to finetune a speech recognition model in English](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/speech_recognition.ipynb), and [how to finetune a speech recognition model in any language](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/multi_lingual_speech_recognition.ipynb).
- [Automatic speech recognition task guide](../tasks/asr)
🚀 Deploy
- A blog post on how to deploy Wav2Vec2 for [Automatic Speech Recognition with Hugging Face's Transformers & Amazon SageMaker](https://www.philschmid.de/automatic-speech-recognition-sagemaker).
## Wav2Vec2Config
[[autodoc]] Wav2Vec2Config
## Wav2Vec2CTCTokenizer
[[autodoc]] Wav2Vec2CTCTokenizer
- __call__
- save_vocabulary
- decode
- batch_decode
- set_target_lang
## Wav2Vec2FeatureExtractor
[[autodoc]] Wav2Vec2FeatureExtractor
- __call__
## Wav2Vec2Processor
[[autodoc]] Wav2Vec2Processor
- __call__
- pad
- from_pretrained
- save_pretrained
- batch_decode
- decode
## Wav2Vec2ProcessorWithLM
[[autodoc]] Wav2Vec2ProcessorWithLM
- __call__
- pad
- from_pretrained
- save_pretrained
- batch_decode
- decode
### Decoding multiple audios
If you are planning to decode multiple batches of audios, you should consider using [`~Wav2Vec2ProcessorWithLM.batch_decode`] and passing an instantiated `multiprocessing.Pool`.
Otherwise, [`~Wav2Vec2ProcessorWithLM.batch_decode`] performance will be slower than calling [`~Wav2Vec2ProcessorWithLM.decode`] for each audio individually, as it internally instantiates a new `Pool` for every call. See the example below:
```python
>>> # Let's see how to use a user-managed pool for batch decoding multiple audios
>>> from multiprocessing import get_context
>>> from transformers import AutoTokenizer, AutoProcessor, AutoModelForCTC
>>> from datasets import load_dataset
>>> import datasets
>>> import torch
>>> # import model, feature extractor, tokenizer
>>> model = AutoModelForCTC.from_pretrained("patrickvonplaten/wav2vec2-base-100h-with-lm").to("cuda")
>>> processor = AutoProcessor.from_pretrained("patrickvonplaten/wav2vec2-base-100h-with-lm")
>>> # load example dataset
>>> dataset = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
>>> dataset = dataset.cast_column("audio", datasets.Audio(sampling_rate=16_000))
>>> def map_to_array(batch):
... batch["speech"] = batch["audio"]["array"]
... return batch
>>> # prepare speech data for batch inference
>>> dataset = dataset.map(map_to_array, remove_columns=["audio"])
>>> def map_to_pred(batch, pool):
... inputs = processor(batch["speech"], sampling_rate=16_000, padding=True, return_tensors="pt")
... inputs = {k: v.to("cuda") for k, v in inputs.items()}
... with torch.no_grad():
... logits = model(**inputs).logits
... transcription = processor.batch_decode(logits.cpu().numpy(), pool).text
... batch["transcription"] = transcription
... return batch
>>> # note: pool should be instantiated *after* `Wav2Vec2ProcessorWithLM`.
>>> # otherwise, the LM won't be available to the pool's sub-processes
>>> # select number of processes and batch_size based on number of CPU cores available and on dataset size
>>> with get_context("fork").Pool(processes=2) as pool:
... result = dataset.map(
... map_to_pred, batched=True, batch_size=2, fn_kwargs={"pool": pool}, remove_columns=["speech"]
... )
>>> result["transcription"][:2]
['MISTER QUILTER IS THE APOSTLE OF THE MIDDLE CLASSES AND WE ARE GLAD TO WELCOME HIS GOSPEL', "NOR IS MISTER COULTER'S MANNER LESS INTERESTING THAN HIS MATTER"]
```
## Wav2Vec2 specific outputs
[[autodoc]] models.wav2vec2_with_lm.processing_wav2vec2_with_lm.Wav2Vec2DecoderWithLMOutput
[[autodoc]] models.wav2vec2.modeling_wav2vec2.Wav2Vec2BaseModelOutput
[[autodoc]] models.wav2vec2.modeling_wav2vec2.Wav2Vec2ForPreTrainingOutput
[[autodoc]] models.wav2vec2.modeling_flax_wav2vec2.FlaxWav2Vec2BaseModelOutput
[[autodoc]] models.wav2vec2.modeling_flax_wav2vec2.FlaxWav2Vec2ForPreTrainingOutput
<frameworkcontent>
<pt>
## Wav2Vec2Model
[[autodoc]] Wav2Vec2Model
- forward
## Wav2Vec2ForCTC
[[autodoc]] Wav2Vec2ForCTC
- forward
- load_adapter
## Wav2Vec2ForSequenceClassification
[[autodoc]] Wav2Vec2ForSequenceClassification
- forward
## Wav2Vec2ForAudioFrameClassification
[[autodoc]] Wav2Vec2ForAudioFrameClassification
- forward
## Wav2Vec2ForXVector
[[autodoc]] Wav2Vec2ForXVector
- forward
## Wav2Vec2ForPreTraining
[[autodoc]] Wav2Vec2ForPreTraining
- forward
</pt>
<tf>
## TFWav2Vec2Model
[[autodoc]] TFWav2Vec2Model
- call
## TFWav2Vec2ForSequenceClassification
[[autodoc]] TFWav2Vec2ForSequenceClassification
- call
## TFWav2Vec2ForCTC
[[autodoc]] TFWav2Vec2ForCTC
- call
</tf>
<jax>
## FlaxWav2Vec2Model
[[autodoc]] FlaxWav2Vec2Model
- __call__
## FlaxWav2Vec2ForCTC
[[autodoc]] FlaxWav2Vec2ForCTC
- __call__
## FlaxWav2Vec2ForPreTraining
[[autodoc]] FlaxWav2Vec2ForPreTraining
- __call__
</jax>
</frameworkcontent>
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"file_path": "transformers/docs/source/en/model_doc/wav2vec2.md",
"repo_id": "transformers",
"token_count": 3788
}
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<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# YOSO
## Overview
The YOSO model was proposed in [You Only Sample (Almost) Once: Linear Cost Self-Attention Via Bernoulli Sampling](https://arxiv.org/abs/2111.09714)
by Zhanpeng Zeng, Yunyang Xiong, Sathya N. Ravi, Shailesh Acharya, Glenn Fung, Vikas Singh. YOSO approximates standard softmax self-attention
via a Bernoulli sampling scheme based on Locality Sensitive Hashing (LSH). In principle, all the Bernoulli random variables can be sampled with
a single hash.
The abstract from the paper is the following:
*Transformer-based models are widely used in natural language processing (NLP). Central to the transformer model is
the self-attention mechanism, which captures the interactions of token pairs in the input sequences and depends quadratically
on the sequence length. Training such models on longer sequences is expensive. In this paper, we show that a Bernoulli sampling
attention mechanism based on Locality Sensitive Hashing (LSH), decreases the quadratic complexity of such models to linear.
We bypass the quadratic cost by considering self-attention as a sum of individual tokens associated with Bernoulli random
variables that can, in principle, be sampled at once by a single hash (although in practice, this number may be a small constant).
This leads to an efficient sampling scheme to estimate self-attention which relies on specific modifications of
LSH (to enable deployment on GPU architectures). We evaluate our algorithm on the GLUE benchmark with standard 512 sequence
length where we see favorable performance relative to a standard pretrained Transformer. On the Long Range Arena (LRA) benchmark,
for evaluating performance on long sequences, our method achieves results consistent with softmax self-attention but with sizable
speed-ups and memory savings and often outperforms other efficient self-attention methods. Our code is available at this https URL*
This model was contributed by [novice03](https://huggingface.co/novice03). The original code can be found [here](https://github.com/mlpen/YOSO).
## Usage tips
- The YOSO attention algorithm is implemented through custom CUDA kernels, functions written in CUDA C++ that can be executed multiple times
in parallel on a GPU.
- The kernels provide a `fast_hash` function, which approximates the random projections of the queries and keys using the Fast Hadamard Transform. Using these
hash codes, the `lsh_cumulation` function approximates self-attention via LSH-based Bernoulli sampling.
- To use the custom kernels, the user should set `config.use_expectation = False`. To ensure that the kernels are compiled successfully,
the user must install the correct version of PyTorch and cudatoolkit. By default, `config.use_expectation = True`, which uses YOSO-E and
does not require compiling CUDA kernels.
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/yoso_architecture.jpg"
alt="drawing" width="600"/>
<small> YOSO Attention Algorithm. Taken from the <a href="https://arxiv.org/abs/2111.09714">original paper</a>.</small>
## Resources
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Question answering task guide](../tasks/question_answering)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Multiple choice task guide](../tasks/multiple_choice)
## YosoConfig
[[autodoc]] YosoConfig
## YosoModel
[[autodoc]] YosoModel
- forward
## YosoForMaskedLM
[[autodoc]] YosoForMaskedLM
- forward
## YosoForSequenceClassification
[[autodoc]] YosoForSequenceClassification
- forward
## YosoForMultipleChoice
[[autodoc]] YosoForMultipleChoice
- forward
## YosoForTokenClassification
[[autodoc]] YosoForTokenClassification
- forward
## YosoForQuestionAnswering
[[autodoc]] YosoForQuestionAnswering
- forward
|
transformers/docs/source/en/model_doc/yoso.md/0
|
{
"file_path": "transformers/docs/source/en/model_doc/yoso.md",
"repo_id": "transformers",
"token_count": 1243
}
| 279
|
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# Methods and tools for efficient training on a single GPU
This guide demonstrates practical techniques that you can use to increase the efficiency of your model's training by
optimizing memory utilization, speeding up the training, or both. If you'd like to understand how GPU is utilized during
training, please refer to the [Model training anatomy](model_memory_anatomy) conceptual guide first. This guide
focuses on practical techniques.
<Tip>
If you have access to a machine with multiple GPUs, these approaches are still valid, plus you can leverage additional methods outlined in the [multi-GPU section](perf_train_gpu_many).
</Tip>
When training large models, there are two aspects that should be considered at the same time:
* Data throughput/training time
* Model performance
Maximizing the throughput (samples/second) leads to lower training cost. This is generally achieved by utilizing the GPU
as much as possible and thus filling GPU memory to its limit. If the desired batch size exceeds the limits of the GPU memory,
the memory optimization techniques, such as gradient accumulation, can help.
However, if the preferred batch size fits into memory, there's no reason to apply memory-optimizing techniques because they can
slow down the training. Just because one can use a large batch size, does not necessarily mean they should. As part of
hyperparameter tuning, you should determine which batch size yields the best results and then optimize resources accordingly.
The methods and tools covered in this guide can be classified based on the effect they have on the training process:
| Method/tool | Improves training speed | Optimizes memory utilization |
|:--------------------------------------------------------------------------------------------------------------------------------------------------------|:------------------------|:-----------------------------|
| [Batch size choice](#batch-size-choice) | Yes | Yes |
| [Gradient accumulation](#gradient-accumulation) | No | Yes |
| [Gradient checkpointing](#gradient-checkpointing) | No | Yes |
| [Mixed precision training](#mixed-precision-training) | Yes | Maybe* |
| [torch_empty_cache_steps](https://huggingface.co/docs/transformers/main/en/main_classes/trainer#transformers.TrainingArguments.torch_empty_cache_steps) | No | Yes |
| [Optimizer choice](#optimizer-choice) | Yes | Yes |
| [Data preloading](#data-preloading) | Yes | No |
| [DeepSpeed Zero](#deepspeed-zero) | No | Yes |
| [torch.compile](#using-torchcompile) | Yes | No |
| [Parameter-Efficient Fine Tuning (PEFT)](#using--peft) | No | Yes |
<Tip>
*Note: when using mixed precision with a small model and a large batch size, there will be some memory savings but with a
large model and a small batch size, the memory use will be larger.
</Tip>
You can combine the above methods to get a cumulative effect. These techniques are available to you whether you are
training your model with [`Trainer`] or writing a pure PyTorch loop, in which case you can [configure these optimizations
with 🤗 Accelerate](#using--accelerate).
If these methods do not result in sufficient gains, you can explore the following options:
* [Look into building your own custom Docker container with efficient software prebuilds](#efficient-software-prebuilds)
* [Consider a model that uses Mixture of Experts (MoE)](#mixture-of-experts)
* [Convert your model to BetterTransformer to leverage PyTorch native attention](#using-pytorch-native-attention-and-flash-attention)
Finally, if all of the above is still not enough, even after switching to a server-grade GPU like A100, consider moving
to a multi-GPU setup. All these approaches are still valid in a multi-GPU setup, plus you can leverage additional parallelism
techniques outlined in the [multi-GPU section](perf_train_gpu_many).
## Batch size choice
To achieve optimal performance, start by identifying the appropriate batch size. It is recommended to use batch sizes and
input/output neuron counts that are of size 2^N. Often it's a multiple of 8, but it can be
higher depending on the hardware being used and the model's dtype.
For reference, check out NVIDIA's recommendation for [input/output neuron counts](
https://docs.nvidia.com/deeplearning/performance/dl-performance-fully-connected/index.html#input-features) and
[batch size](https://docs.nvidia.com/deeplearning/performance/dl-performance-fully-connected/index.html#batch-size) for
fully connected layers (which are involved in GEMMs (General Matrix Multiplications)).
[Tensor Core Requirements](https://docs.nvidia.com/deeplearning/performance/dl-performance-matrix-multiplication/index.html#requirements-tc)
define the multiplier based on the dtype and the hardware. For instance, for fp16 data type a multiple of 8 is recommended, unless
it's an A100 GPU, in which case use multiples of 64.
For parameters that are small, consider also [Dimension Quantization Effects](https://docs.nvidia.com/deeplearning/performance/dl-performance-matrix-multiplication/index.html#dim-quantization).
This is where tiling happens and the right multiplier can have a significant speedup.
## Gradient Accumulation
The **gradient accumulation** method aims to calculate gradients in smaller increments instead of computing them for the
entire batch at once. This approach involves iteratively calculating gradients in smaller batches by performing forward
and backward passes through the model and accumulating the gradients during the process. Once a sufficient number of
gradients have been accumulated, the model's optimization step is executed. By employing gradient accumulation, it
becomes possible to increase the **effective batch size** beyond the limitations imposed by the GPU's memory capacity.
However, it is important to note that the additional forward and backward passes introduced by gradient accumulation can
slow down the training process.
You can enable gradient accumulation by adding the `gradient_accumulation_steps` argument to [`TrainingArguments`]:
```py
training_args = TrainingArguments(per_device_train_batch_size=1, gradient_accumulation_steps=4, **default_args)
```
In the above example, your effective batch size becomes 4.
Alternatively, use 🤗 Accelerate to gain full control over the training loop. Find the 🤗 Accelerate example
[further down in this guide](#using--accelerate).
While it is advised to max out GPU usage as much as possible, a high number of gradient accumulation steps can
result in a more pronounced training slowdown. Consider the following example. Let's say, the `per_device_train_batch_size=4`
without gradient accumulation hits the GPU's limit. If you would like to train with batches of size 64, do not set the
`per_device_train_batch_size` to 1 and `gradient_accumulation_steps` to 64. Instead, keep `per_device_train_batch_size=4`
and set `gradient_accumulation_steps=16`. This results in the same effective batch size while making better use of
the available GPU resources.
For additional information, please refer to batch size and gradient accumulation benchmarks for [RTX-3090](https://github.com/huggingface/transformers/issues/14608#issuecomment-1004392537)
and [A100](https://github.com/huggingface/transformers/issues/15026#issuecomment-1005033957).
## Gradient Checkpointing
Some large models may still face memory issues even when the batch size is set to 1 and gradient accumulation is used.
This is because there are other components that also require memory storage.
Saving all activations from the forward pass in order to compute the gradients during the backward pass can result in
significant memory overhead. The alternative approach of discarding the activations and recalculating them when needed
during the backward pass, would introduce a considerable computational overhead and slow down the training process.
**Gradient checkpointing** offers a compromise between these two approaches and saves strategically selected activations
throughout the computational graph so only a fraction of the activations need to be re-computed for the gradients. For
an in-depth explanation of gradient checkpointing, refer to [this great article](https://medium.com/tensorflow/fitting-larger-networks-into-memory-583e3c758ff9).
To enable gradient checkpointing in the [`Trainer`], pass the corresponding a flag to [`TrainingArguments`]:
```py
training_args = TrainingArguments(
per_device_train_batch_size=1, gradient_accumulation_steps=4, gradient_checkpointing=True, **default_args
)
```
Alternatively, use 🤗 Accelerate - find the 🤗 Accelerate example [further in this guide](#using--accelerate).
<Tip>
While gradient checkpointing may improve memory efficiency, it slows training by approximately 20%.
</Tip>
## Mixed precision training
**Mixed precision training** is a technique that aims to optimize the computational efficiency of training models by
utilizing lower-precision numerical formats for certain variables. Traditionally, most models use 32-bit floating point
precision (fp32 or float32) to represent and process variables. However, not all variables require this high precision
level to achieve accurate results. By reducing the precision of certain variables to lower numerical formats like 16-bit
floating point (fp16 or float16), we can speed up the computations. Because in this approach some computations are performed
in half-precision, while some are still in full precision, the approach is called mixed precision training.
Most commonly mixed precision training is achieved by using fp16 (float16) data types, however, some GPU architectures
(such as the Ampere architecture) offer bf16 and tf32 (CUDA internal data type) data types. Check
out the [NVIDIA Blog](https://developer.nvidia.com/blog/accelerating-ai-training-with-tf32-tensor-cores/) to learn more about
the differences between these data types.
### fp16
The main advantage of mixed precision training comes from saving the activations in half precision (fp16).
Although the gradients are also computed in half precision they are converted back to full precision for the optimization
step so no memory is saved here.
While mixed precision training results in faster computations, it can also lead to more GPU memory being utilized, especially for small batch sizes.
This is because the model is now present on the GPU in both 16-bit and 32-bit precision (1.5x the original model on the GPU).
To enable mixed precision training, set the `fp16` flag to `True`:
```py
training_args = TrainingArguments(per_device_train_batch_size=4, fp16=True, **default_args)
```
If you prefer to use 🤗 Accelerate, find the 🤗 Accelerate example [further in this guide](#using--accelerate).
### BF16
If you have access to an Ampere or newer hardware you can use bf16 for mixed precision training and evaluation. While
bf16 has a worse precision than fp16, it has a much bigger dynamic range. In fp16 the biggest number you can have
is `65535` and any number above that will result in an overflow. A bf16 number can be as large as `3.39e+38` (!) which
is about the same as fp32 - because both have 8-bits used for the numerical range.
You can enable BF16 in the 🤗 Trainer with:
```python
training_args = TrainingArguments(bf16=True, **default_args)
```
### TF32
The Ampere hardware uses a magical data type called tf32. It has the same numerical range as fp32 (8-bits), but instead
of 23 bits precision it has only 10 bits (same as fp16) and uses only 19 bits in total. It's "magical" in the sense that
you can use the normal fp32 training and/or inference code and by enabling tf32 support you can get up to 3x throughput
improvement. All you need to do is to add the following to your code:
```python
import torch
torch.backends.cuda.matmul.allow_tf32 = True
torch.backends.cudnn.allow_tf32 = True
```
CUDA will automatically switch to using tf32 instead of fp32 where possible, assuming that the used GPU is from the Ampere series.
According to [NVIDIA research](https://developer.nvidia.com/blog/accelerating-ai-training-with-tf32-tensor-cores/), the
majority of machine learning training workloads show the same perplexity and convergence with tf32 training as with fp32.
If you're already using fp16 or bf16 mixed precision it may help with the throughput as well.
You can enable this mode in the 🤗 Trainer:
```python
TrainingArguments(tf32=True, **default_args)
```
<Tip>
tf32 can't be accessed directly via `tensor.to(dtype=torch.tf32)` because it is an internal CUDA data type. You need `torch>=1.7` to use tf32 data types.
</Tip>
For additional information on tf32 vs other precisions, please refer to the following benchmarks:
[RTX-3090](https://github.com/huggingface/transformers/issues/14608#issuecomment-1004390803) and
[A100](https://github.com/huggingface/transformers/issues/15026#issuecomment-1004543189).
## Flash Attention 2
You can speedup the training throughput by using Flash Attention 2 integration in transformers. Check out the appropriate section in the [single GPU section](./perf_infer_gpu_one#Flash-Attention-2) to learn more about how to load a model with Flash Attention 2 modules.
## Optimizer choice
The most common optimizer used to train transformer models is Adam or AdamW (Adam with weight decay). Adam achieves
good convergence by storing the rolling average of the previous gradients; however, it adds an additional memory
footprint of the order of the number of model parameters. To remedy this, you can use an alternative optimizer.
For example if you have [NVIDIA/apex](https://github.com/NVIDIA/apex) installed for NVIDIA GPUs, or [ROCmSoftwarePlatform/apex](https://github.com/ROCmSoftwarePlatform/apex) for AMD GPUs, `adamw_apex_fused` will give you the
fastest training experience among all supported AdamW optimizers.
[`Trainer`] integrates a variety of optimizers that can be used out of box: `adamw_hf`, `adamw_torch`, `adamw_torch_fused`,
`adamw_apex_fused`, `adamw_anyprecision`, `adafactor`, or `adamw_bnb_8bit`. More optimizers can be plugged in via a third-party implementation.
Let's take a closer look at two alternatives to AdamW optimizer:
1. `adafactor` which is available in [`Trainer`]
2. `adamw_bnb_8bit` is also available in Trainer, but a third-party integration is provided below for demonstration.
For comparison, for a 3B-parameter model, like “google-t5/t5-3b”:
* A standard AdamW optimizer will need 24GB of GPU memory because it uses 8 bytes for each parameter (8*3 => 24GB)
* Adafactor optimizer will need more than 12GB. It uses slightly more than 4 bytes for each parameter, so 4*3 and then some extra.
* 8bit BNB quantized optimizer will use only (2*3) 6GB if all optimizer states are quantized.
### Adafactor
Adafactor doesn't store rolling averages for each element in weight matrices. Instead, it keeps aggregated information
(sums of rolling averages row- and column-wise), significantly reducing its footprint. However, compared to Adam,
Adafactor may have slower convergence in certain cases.
You can switch to Adafactor by setting `optim="adafactor"` in [`TrainingArguments`]:
```py
training_args = TrainingArguments(per_device_train_batch_size=4, optim="adafactor", **default_args)
```
Combined with other approaches (gradient accumulation, gradient checkpointing, and mixed precision training)
you can notice up to 3x improvement while maintaining the throughput! However, as mentioned before, the convergence of
Adafactor can be worse than Adam.
### 8-bit Adam
Instead of aggregating optimizer states like Adafactor, 8-bit Adam keeps the full state and quantizes it. Quantization
means that it stores the state with lower precision and dequantizes it only for the optimization. This is similar to the
idea behind mixed precision training.
To use `adamw_bnb_8bit`, you simply need to set `optim="adamw_bnb_8bit"` in [`TrainingArguments`]:
```py
training_args = TrainingArguments(per_device_train_batch_size=4, optim="adamw_bnb_8bit", **default_args)
```
However, we can also use a third-party implementation of the 8-bit optimizer for demonstration purposes to see how that can be integrated.
First, follow the installation guide in the GitHub [repo](https://github.com/TimDettmers/bitsandbytes) to install the `bitsandbytes` library
that implements the 8-bit Adam optimizer.
Next you need to initialize the optimizer. This involves two steps:
* First, group the model's parameters into two groups - one where weight decay should be applied, and the other one where it should not. Usually, biases and layer norm parameters are not weight decayed.
* Then do some argument housekeeping to use the same parameters as the previously used AdamW optimizer.
```py
import bitsandbytes as bnb
from torch import nn
from transformers.trainer_pt_utils import get_parameter_names
training_args = TrainingArguments(per_device_train_batch_size=4, **default_args)
decay_parameters = get_parameter_names(model, [nn.LayerNorm])
decay_parameters = [name for name in decay_parameters if "bias" not in name]
optimizer_grouped_parameters = [
{
"params": [p for n, p in model.named_parameters() if n in decay_parameters],
"weight_decay": training_args.weight_decay,
},
{
"params": [p for n, p in model.named_parameters() if n not in decay_parameters],
"weight_decay": 0.0,
},
]
optimizer_kwargs = {
"betas": (training_args.adam_beta1, training_args.adam_beta2),
"eps": training_args.adam_epsilon,
}
optimizer_kwargs["lr"] = training_args.learning_rate
adam_bnb_optim = bnb.optim.Adam8bit(
optimizer_grouped_parameters,
betas=(training_args.adam_beta1, training_args.adam_beta2),
eps=training_args.adam_epsilon,
lr=training_args.learning_rate,
)
```
Finally, pass the custom optimizer as an argument to the `Trainer`:
```py
trainer = Trainer(model=model, args=training_args, train_dataset=ds, optimizers=(adam_bnb_optim, None))
```
Combined with other approaches (gradient accumulation, gradient checkpointing, and mixed precision training),
you can expect to get about a 3x memory improvement and even slightly higher throughput as using Adafactor.
### multi_tensor
pytorch-nightly introduced `torch.optim._multi_tensor` which should significantly speed up the optimizers for situations
with lots of small feature tensors. It should eventually become the default, but if you want to experiment with it sooner, take a look at this GitHub [issue](https://github.com/huggingface/transformers/issues/9965).
## Data preloading
One of the important requirements to reach great training speed is the ability to feed the GPU at the maximum speed it
can handle. By default, everything happens in the main process, and it might not be able to read the data from disk fast
enough, and thus create a bottleneck, leading to GPU under-utilization. Configure the following arguments to reduce the bottleneck:
- `DataLoader(pin_memory=True, ...)` - ensures the data gets preloaded into the pinned memory on CPU and typically leads to much faster transfers from CPU to GPU memory.
- `DataLoader(num_workers=4, ...)` - spawn several workers to preload data faster. During training, watch the GPU utilization stats; if it's far from 100%, experiment with increasing the number of workers. Of course, the problem could be elsewhere, so many workers won't necessarily lead to better performance.
When using [`Trainer`], the corresponding [`TrainingArguments`] are: `dataloader_pin_memory` (`True` by default), and `dataloader_num_workers` (defaults to `0`).
## DeepSpeed ZeRO
DeepSpeed is an open-source deep learning optimization library that is integrated with 🤗 Transformers and 🤗 Accelerate.
It provides a wide range of features and optimizations designed to improve the efficiency and scalability of large-scale
deep learning training.
If your model fits onto a single GPU and you have enough space to fit a small batch size, you don't need to use DeepSpeed
as it'll only slow things down. However, if the model doesn't fit onto a single GPU or you can't fit a small batch, you can
leverage DeepSpeed ZeRO + CPU Offload, or NVMe Offload for much larger models. In this case, you need to separately
[install the library](main_classes/deepspeed#installation), then follow one of the guides to create a configuration file
and launch DeepSpeed:
* For an in-depth guide on DeepSpeed integration with [`Trainer`], review [the corresponding documentation](main_classes/deepspeed), specifically the
[section for a single GPU](main_classes/deepspeed#deployment-with-one-gpu). Some adjustments are required to use DeepSpeed in a notebook; please take a look at the [corresponding guide](main_classes/deepspeed#deployment-in-notebooks).
* If you prefer to use 🤗 Accelerate, refer to [🤗 Accelerate DeepSpeed guide](https://huggingface.co/docs/accelerate/en/usage_guides/deepspeed).
## Using torch.compile
PyTorch 2.0 introduced a new compile function that doesn't require any modification to existing PyTorch code but can
optimize your code by adding a single line of code: `model = torch.compile(model)`.
If using [`Trainer`], you only need `to` pass the `torch_compile` option in the [`TrainingArguments`]:
```python
training_args = TrainingArguments(torch_compile=True, **default_args)
```
`torch.compile` uses Python's frame evaluation API to automatically create a graph from existing PyTorch programs. After
capturing the graph, different backends can be deployed to lower the graph to an optimized engine.
You can find more details and benchmarks in [PyTorch documentation](https://pytorch.org/get-started/pytorch-2.0/).
`torch.compile` has a growing list of backends, which can be found in by calling `torchdynamo.list_backends()`, each of which with its optional dependencies.
Choose which backend to use by specifying it via `torch_compile_backend` in the [`TrainingArguments`]. Some of the most commonly used backends are:
**Debugging backends**:
* `dynamo.optimize("eager")` - Uses PyTorch to run the extracted GraphModule. This is quite useful in debugging TorchDynamo issues.
* `dynamo.optimize("aot_eager")` - Uses AotAutograd with no compiler, i.e, just using PyTorch eager for the AotAutograd's extracted forward and backward graphs. This is useful for debugging, and unlikely to give speedups.
**Training & inference backends**:
* `dynamo.optimize("inductor")` - Uses TorchInductor backend with AotAutograd and cudagraphs by leveraging codegened Triton kernels [Read more](https://dev-discuss.pytorch.org/t/torchinductor-a-pytorch-native-compiler-with-define-by-run-ir-and-symbolic-shapes/747)
* `dynamo.optimize("nvfuser")` - nvFuser with TorchScript. [Read more](https://dev-discuss.pytorch.org/t/tracing-with-primitives-update-1-nvfuser-and-its-primitives/593)
* `dynamo.optimize("aot_nvfuser")` - nvFuser with AotAutograd. [Read more](https://dev-discuss.pytorch.org/t/tracing-with-primitives-update-1-nvfuser-and-its-primitives/593)
* `dynamo.optimize("aot_cudagraphs")` - cudagraphs with AotAutograd. [Read more](https://github.com/pytorch/torchdynamo/pull/757)
**Inference-only backend**s:
* `dynamo.optimize("ofi")` - Uses Torchscript optimize_for_inference. [Read more](https://pytorch.org/docs/stable/generated/torch.jit.optimize_for_inference.html)
* `dynamo.optimize("fx2trt")` - Uses NVIDIA TensorRT for inference optimizations. [Read more](https://pytorch.org/TensorRT/tutorials/getting_started_with_fx_path.html)
* `dynamo.optimize("onnxrt")` - Uses ONNXRT for inference on CPU/GPU. [Read more](https://onnxruntime.ai/)
* `dynamo.optimize("ipex")` - Uses IPEX for inference on CPU. [Read more](https://github.com/intel/intel-extension-for-pytorch)
For an example of using `torch.compile` with 🤗 Transformers, check out this [blog post on fine-tuning a BERT model for Text Classification using the newest PyTorch 2.0 features](https://www.philschmid.de/getting-started-pytorch-2-0-transformers)
## Using 🤗 PEFT
[Parameter-Efficient Fine Tuning (PEFT)](https://huggingface.co/blog/peft) methods freeze the pretrained model parameters during fine-tuning and add a small number of trainable parameters (the adapters) on top of it.
As a result the [memory associated to the optimizer states and gradients](https://huggingface.co/docs/transformers/model_memory_anatomy#anatomy-of-models-memory) are greatly reduced.
For example with a vanilla AdamW, the memory requirement for the optimizer state would be:
* fp32 copy of parameters: 4 bytes/param
* Momentum: 4 bytes/param
* Variance: 4 bytes/param
Suppose a model with 7B parameters and 200 millions parameters injected with [Low Rank Adapters](https://huggingface.co/docs/peft/conceptual_guides/lora).
The memory requirement for the optimizer state of the plain model would be 12 * 7 = 84 GB (assuming 7B trainable parameters).
Adding Lora increases slightly the memory associated to the model weights and substantially decreases memory requirement for the optimizer state to 12 * 0.2 = 2.4GB.
Read more about PEFT and its detailed usage in [the PEFT documentation](https://huggingface.co/docs/peft/) or [PEFT repository](https://github.com/huggingface/peft).
## Using 🤗 Accelerate
With [🤗 Accelerate](https://huggingface.co/docs/accelerate/index) you can use the above methods while gaining full
control over the training loop and can essentially write the loop in pure PyTorch with some minor modifications.
Suppose you have combined the methods in the [`TrainingArguments`] like so:
```py
training_args = TrainingArguments(
per_device_train_batch_size=1,
gradient_accumulation_steps=4,
gradient_checkpointing=True,
fp16=True,
**default_args,
)
```
The full example training loop with 🤗 Accelerate is only a handful of lines of code long:
```py
from accelerate import Accelerator
from torch.utils.data.dataloader import DataLoader
dataloader = DataLoader(ds, batch_size=training_args.per_device_train_batch_size)
if training_args.gradient_checkpointing:
model.gradient_checkpointing_enable()
accelerator = Accelerator(fp16=training_args.fp16)
model, optimizer, dataloader = accelerator.prepare(model, adam_bnb_optim, dataloader)
model.train()
for step, batch in enumerate(dataloader, start=1):
loss = model(**batch).loss
loss = loss / training_args.gradient_accumulation_steps
accelerator.backward(loss)
if step % training_args.gradient_accumulation_steps == 0:
optimizer.step()
optimizer.zero_grad()
```
First we wrap the dataset in a [`DataLoader`](https://pytorch.org/docs/stable/data.html#torch.utils.data.DataLoader).
Then we can enable gradient checkpointing by calling the model's [`~PreTrainedModel.gradient_checkpointing_enable`] method.
When we initialize the [`Accelerator`](https://huggingface.co/docs/accelerate/package_reference/accelerator#accelerate.Accelerator)
we can specify if we want to use mixed precision training and it will take care of it for us in the [`prepare`] call.
During the [`prepare`](https://huggingface.co/docs/accelerate/package_reference/accelerator#accelerate.Accelerator.prepare)
call the dataloader will also be distributed across workers should we use multiple GPUs. We use the same [8-bit optimizer](#8-bit-adam) from the earlier example.
Finally, we can add the main training loop. Note that the `backward` call is handled by 🤗 Accelerate. We can also see
how gradient accumulation works: we normalize the loss, so we get the average at the end of accumulation and once we have
enough steps we run the optimization.
Implementing these optimization techniques with 🤗 Accelerate only takes a handful of lines of code and comes with the
benefit of more flexibility in the training loop. For a full documentation of all features have a look at the
[Accelerate documentation](https://huggingface.co/docs/accelerate/index).
## Efficient Software Prebuilds
PyTorch's [pip and conda builds](https://pytorch.org/get-started/locally/#start-locally) come prebuilt with the cuda toolkit
which is enough to run PyTorch, but it is insufficient if you need to build cuda extensions.
At times, additional efforts may be required to pre-build some components. For instance, if you're using libraries like `apex` that
don't come pre-compiled. In other situations figuring out how to install the right cuda toolkit system-wide can be complicated.
To address these scenarios PyTorch and NVIDIA released a new version of NGC docker container which already comes with
everything prebuilt. You just need to install your programs on it, and it will run out of the box.
This approach is also useful if you want to tweak the pytorch source and/or make a new customized build.
To find the docker image version you want start [with PyTorch release notes](https://docs.nvidia.com/deeplearning/frameworks/pytorch-release-notes/),
choose one of the latest monthly releases. Go into the release's notes for the desired release, check that the environment's
components are matching your needs (including NVIDIA Driver requirements!) and then at the very top of that document go
to the corresponding NGC page. If for some reason you get lost, here is [the index of all PyTorch NGC images](https://ngc.nvidia.com/catalog/containers/nvidia:pytorch).
Next follow the instructions to download and deploy the docker image.
## Mixture of Experts
Some recent papers reported a 4-5x training speedup and a faster inference by integrating
Mixture of Experts (MoE) into the Transformer models.
Since it has been discovered that more parameters lead to better performance, this technique allows to increase the
number of parameters by an order of magnitude without increasing training costs.
In this approach every other FFN layer is replaced with a MoE Layer which consists of many experts, with a gated function
that trains each expert in a balanced way depending on the input token's position in a sequence.
(source: [GLAM](https://ai.googleblog.com/2021/12/more-efficient-in-context-learning-with.html))
You can find exhaustive details and comparison tables in the papers listed at the end of this section.
The main drawback of this approach is that it requires staggering amounts of GPU memory - almost an order of magnitude
larger than its dense equivalent. Various distillation and approaches are proposed to how to overcome the much higher memory requirements.
There is direct trade-off though, you can use just a few experts with a 2-3x smaller base model instead of dozens or
hundreds experts leading to a 5x smaller model and thus increase the training speed moderately while increasing the
memory requirements moderately as well.
Most related papers and implementations are built around Tensorflow/TPUs:
- [GShard: Scaling Giant Models with Conditional Computation and Automatic Sharding](https://arxiv.org/abs/2006.16668)
- [Switch Transformers: Scaling to Trillion Parameter Models with Simple and Efficient Sparsity](https://arxiv.org/abs/2101.03961)
- [GLaM: Generalist Language Model (GLaM)](https://ai.googleblog.com/2021/12/more-efficient-in-context-learning-with.html)
And for Pytorch DeepSpeed has built one as well: [DeepSpeed-MoE: Advancing Mixture-of-Experts Inference and Training to Power Next-Generation AI Scale](https://arxiv.org/abs/2201.05596), [Mixture of Experts](https://www.deepspeed.ai/tutorials/mixture-of-experts/) - blog posts: [1](https://www.microsoft.com/en-us/research/blog/deepspeed-powers-8x-larger-moe-model-training-with-high-performance/), [2](https://www.microsoft.com/en-us/research/publication/scalable-and-efficient-moe-training-for-multitask-multilingual-models/) and specific deployment with large transformer-based natural language generation models: [blog post](https://www.deepspeed.ai/2021/12/09/deepspeed-moe-nlg.html), [Megatron-Deepspeed branch](https://github.com/microsoft/Megatron-DeepSpeed/tree/moe-training).
## Using PyTorch native attention and Flash Attention
PyTorch's [`torch.nn.functional.scaled_dot_product_attention`](https://pytorch.org/docs/master/generated/torch.nn.functional.scaled_dot_product_attention.html) (SDPA) can also call FlashAttention and memory-efficient attention kernels under the hood. SDPA support is currently being added natively in Transformers and is used by default for `torch>=2.1.1` when an implementation is available. Please refer to [PyTorch scaled dot product attention](https://huggingface.co/docs/transformers/perf_infer_gpu_one#pytorch-scaled-dot-product-attention) for a list of supported models and more details.
Check out this [blogpost](https://pytorch.org/blog/out-of-the-box-acceleration/) to learn more about acceleration and memory-savings with SDPA.
|
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the License. You may obtain a copy of the License at
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# GPTQ
<Tip>
Try GPTQ quantization with PEFT in this [notebook](https://colab.research.google.com/drive/1_TIrmuKOFhuRRiTWN94iLKUFu6ZX4ceb?usp=sharing) and learn more about it's details in this [blog post](https://huggingface.co/blog/gptq-integration)!
</Tip>
The [AutoGPTQ](https://github.com/PanQiWei/AutoGPTQ) library implements the GPTQ algorithm, a post-training quantization technique where each row of the weight matrix is quantized independently to find a version of the weights that minimizes the error. These weights are quantized to int4, but they're restored to fp16 on the fly during inference. This can save your memory-usage by 4x because the int4 weights are dequantized in a fused kernel rather than a GPU's global memory, and you can also expect a speedup in inference because using a lower bitwidth takes less time to communicate.
Before you begin, make sure the following libraries are installed:
```bash
pip install auto-gptq
pip install --upgrade accelerate optimum transformers
```
To quantize a model (currently only supported for text models), you need to create a [`GPTQConfig`] class and set the number of bits to quantize to, a dataset to calibrate the weights for quantization, and a tokenizer to prepare the dataset.
```py
from transformers import AutoModelForCausalLM, AutoTokenizer, GPTQConfig
model_id = "facebook/opt-125m"
tokenizer = AutoTokenizer.from_pretrained(model_id)
gptq_config = GPTQConfig(bits=4, dataset="c4", tokenizer=tokenizer)
```
You could also pass your own dataset as a list of strings, but it is highly recommended to use the same dataset from the GPTQ paper.
```py
dataset = ["auto-gptq is an easy-to-use model quantization library with user-friendly apis, based on GPTQ algorithm."]
gptq_config = GPTQConfig(bits=4, dataset=dataset, tokenizer=tokenizer)
```
Load a model to quantize and pass the `gptq_config` to the [`~AutoModelForCausalLM.from_pretrained`] method. Set `device_map="auto"` to automatically offload the model to a CPU to help fit the model in memory, and allow the model modules to be moved between the CPU and GPU for quantization.
```py
quantized_model = AutoModelForCausalLM.from_pretrained(model_id, device_map="auto", quantization_config=gptq_config)
```
If you're running out of memory because a dataset is too large, disk offloading is not supported. If this is the case, try passing the `max_memory` parameter to allocate the amount of memory to use on your device (GPU and CPU):
```py
quantized_model = AutoModelForCausalLM.from_pretrained(model_id, device_map="auto", max_memory={0: "30GiB", 1: "46GiB", "cpu": "30GiB"}, quantization_config=gptq_config)
```
<Tip warning={true}>
Depending on your hardware, it can take some time to quantize a model from scratch. It can take ~5 minutes to quantize the [facebook/opt-350m](https://huggingface.co/facebook/opt-350m) model on a free-tier Google Colab GPU, but it'll take ~4 hours to quantize a 175B parameter model on a NVIDIA A100. Before you quantize a model, it is a good idea to check the Hub if a GPTQ-quantized version of the model already exists.
</Tip>
Once your model is quantized, you can push the model and tokenizer to the Hub where it can be easily shared and accessed. Use the [`~PreTrainedModel.push_to_hub`] method to save the [`GPTQConfig`]:
```py
quantized_model.push_to_hub("opt-125m-gptq")
tokenizer.push_to_hub("opt-125m-gptq")
```
You could also save your quantized model locally with the [`~PreTrainedModel.save_pretrained`] method. If the model was quantized with the `device_map` parameter, make sure to move the entire model to a GPU or CPU before saving it. For example, to save the model on a CPU:
```py
quantized_model.save_pretrained("opt-125m-gptq")
tokenizer.save_pretrained("opt-125m-gptq")
# if quantized with device_map set
quantized_model.to("cpu")
quantized_model.save_pretrained("opt-125m-gptq")
```
Reload a quantized model with the [`~PreTrainedModel.from_pretrained`] method, and set `device_map="auto"` to automatically distribute the model on all available GPUs to load the model faster without using more memory than needed.
```py
from transformers import AutoModelForCausalLM
model = AutoModelForCausalLM.from_pretrained("{your_username}/opt-125m-gptq", device_map="auto")
```
## ExLlama
[ExLlama](https://github.com/turboderp/exllama) is a Python/C++/CUDA implementation of the [Llama](model_doc/llama) model that is designed for faster inference with 4-bit GPTQ weights (check out these [benchmarks](https://github.com/huggingface/optimum/tree/main/tests/benchmark#gptq-benchmark)). The ExLlama kernel is activated by default when you create a [`GPTQConfig`] object. To boost inference speed even further, use the [ExLlamaV2](https://github.com/turboderp/exllamav2) kernels by configuring the `exllama_config` parameter:
```py
import torch
from transformers import AutoModelForCausalLM, GPTQConfig
gptq_config = GPTQConfig(bits=4, exllama_config={"version":2})
model = AutoModelForCausalLM.from_pretrained("{your_username}/opt-125m-gptq", device_map="auto", quantization_config=gptq_config)
```
<Tip warning={true}>
Only 4-bit models are supported, and we recommend deactivating the ExLlama kernels if you're finetuning a quantized model with PEFT.
</Tip>
The ExLlama kernels are only supported when the entire model is on the GPU. If you're doing inference on a CPU with AutoGPTQ (version > 0.4.2), then you'll need to disable the ExLlama kernel. This overwrites the attributes related to the ExLlama kernels in the quantization config of the config.json file.
```py
import torch
from transformers import AutoModelForCausalLM, GPTQConfig
gptq_config = GPTQConfig(bits=4, use_exllama=False)
model = AutoModelForCausalLM.from_pretrained("{your_username}/opt-125m-gptq", device_map="cpu", quantization_config=gptq_config)
```
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"repo_id": "transformers",
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# Image classification
[[open-in-colab]]
<Youtube id="tjAIM7BOYhw"/>
Image classification assigns a label or class to an image. Unlike text or audio classification, the inputs are the
pixel values that comprise an image. There are many applications for image classification, such as detecting damage
after a natural disaster, monitoring crop health, or helping screen medical images for signs of disease.
This guide illustrates how to:
1. Fine-tune [ViT](model_doc/vit) on the [Food-101](https://huggingface.co/datasets/food101) dataset to classify a food item in an image.
2. Use your fine-tuned model for inference.
<Tip>
To see all architectures and checkpoints compatible with this task, we recommend checking the [task-page](https://huggingface.co/tasks/image-classification)
</Tip>
Before you begin, make sure you have all the necessary libraries installed:
```bash
pip install transformers datasets evaluate accelerate pillow torchvision scikit-learn
```
We encourage you to log in to your Hugging Face account to upload and share your model with the community. When prompted, enter your token to log in:
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## Load Food-101 dataset
Start by loading a smaller subset of the Food-101 dataset from the 🤗 Datasets library. This will give you a chance to
experiment and make sure everything works before spending more time training on the full dataset.
```py
>>> from datasets import load_dataset
>>> food = load_dataset("food101", split="train[:5000]")
```
Split the dataset's `train` split into a train and test set with the [`~datasets.Dataset.train_test_split`] method:
```py
>>> food = food.train_test_split(test_size=0.2)
```
Then take a look at an example:
```py
>>> food["train"][0]
{'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=512x512 at 0x7F52AFC8AC50>,
'label': 79}
```
Each example in the dataset has two fields:
- `image`: a PIL image of the food item
- `label`: the label class of the food item
To make it easier for the model to get the label name from the label id, create a dictionary that maps the label name
to an integer and vice versa:
```py
>>> labels = food["train"].features["label"].names
>>> label2id, id2label = dict(), dict()
>>> for i, label in enumerate(labels):
... label2id[label] = str(i)
... id2label[str(i)] = label
```
Now you can convert the label id to a label name:
```py
>>> id2label[str(79)]
'prime_rib'
```
## Preprocess
The next step is to load a ViT image processor to process the image into a tensor:
```py
>>> from transformers import AutoImageProcessor
>>> checkpoint = "google/vit-base-patch16-224-in21k"
>>> image_processor = AutoImageProcessor.from_pretrained(checkpoint)
```
<frameworkcontent>
<pt>
Apply some image transformations to the images to make the model more robust against overfitting. Here you'll use torchvision's [`transforms`](https://pytorch.org/vision/stable/transforms.html) module, but you can also use any image library you like.
Crop a random part of the image, resize it, and normalize it with the image mean and standard deviation:
```py
>>> from torchvision.transforms import RandomResizedCrop, Compose, Normalize, ToTensor
>>> normalize = Normalize(mean=image_processor.image_mean, std=image_processor.image_std)
>>> size = (
... image_processor.size["shortest_edge"]
... if "shortest_edge" in image_processor.size
... else (image_processor.size["height"], image_processor.size["width"])
... )
>>> _transforms = Compose([RandomResizedCrop(size), ToTensor(), normalize])
```
Then create a preprocessing function to apply the transforms and return the `pixel_values` - the inputs to the model - of the image:
```py
>>> def transforms(examples):
... examples["pixel_values"] = [_transforms(img.convert("RGB")) for img in examples["image"]]
... del examples["image"]
... return examples
```
To apply the preprocessing function over the entire dataset, use 🤗 Datasets [`~datasets.Dataset.with_transform`] method. The transforms are applied on the fly when you load an element of the dataset:
```py
>>> food = food.with_transform(transforms)
```
Now create a batch of examples using [`DefaultDataCollator`]. Unlike other data collators in 🤗 Transformers, the `DefaultDataCollator` does not apply additional preprocessing such as padding.
```py
>>> from transformers import DefaultDataCollator
>>> data_collator = DefaultDataCollator()
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
To avoid overfitting and to make the model more robust, add some data augmentation to the training part of the dataset.
Here we use Keras preprocessing layers to define the transformations for the training data (includes data augmentation),
and transformations for the validation data (only center cropping, resizing and normalizing). You can use `tf.image`or
any other library you prefer.
```py
>>> from tensorflow import keras
>>> from tensorflow.keras import layers
>>> size = (image_processor.size["height"], image_processor.size["width"])
>>> train_data_augmentation = keras.Sequential(
... [
... layers.RandomCrop(size[0], size[1]),
... layers.Rescaling(scale=1.0 / 127.5, offset=-1),
... layers.RandomFlip("horizontal"),
... layers.RandomRotation(factor=0.02),
... layers.RandomZoom(height_factor=0.2, width_factor=0.2),
... ],
... name="train_data_augmentation",
... )
>>> val_data_augmentation = keras.Sequential(
... [
... layers.CenterCrop(size[0], size[1]),
... layers.Rescaling(scale=1.0 / 127.5, offset=-1),
... ],
... name="val_data_augmentation",
... )
```
Next, create functions to apply appropriate transformations to a batch of images, instead of one image at a time.
```py
>>> import numpy as np
>>> import tensorflow as tf
>>> from PIL import Image
>>> def convert_to_tf_tensor(image: Image):
... np_image = np.array(image)
... tf_image = tf.convert_to_tensor(np_image)
... # `expand_dims()` is used to add a batch dimension since
... # the TF augmentation layers operates on batched inputs.
... return tf.expand_dims(tf_image, 0)
>>> def preprocess_train(example_batch):
... """Apply train_transforms across a batch."""
... images = [
... train_data_augmentation(convert_to_tf_tensor(image.convert("RGB"))) for image in example_batch["image"]
... ]
... example_batch["pixel_values"] = [tf.transpose(tf.squeeze(image)) for image in images]
... return example_batch
... def preprocess_val(example_batch):
... """Apply val_transforms across a batch."""
... images = [
... val_data_augmentation(convert_to_tf_tensor(image.convert("RGB"))) for image in example_batch["image"]
... ]
... example_batch["pixel_values"] = [tf.transpose(tf.squeeze(image)) for image in images]
... return example_batch
```
Use 🤗 Datasets [`~datasets.Dataset.set_transform`] to apply the transformations on the fly:
```py
food["train"].set_transform(preprocess_train)
food["test"].set_transform(preprocess_val)
```
As a final preprocessing step, create a batch of examples using `DefaultDataCollator`. Unlike other data collators in 🤗 Transformers, the
`DefaultDataCollator` does not apply additional preprocessing, such as padding.
```py
>>> from transformers import DefaultDataCollator
>>> data_collator = DefaultDataCollator(return_tensors="tf")
```
</tf>
</frameworkcontent>
## Evaluate
Including a metric during training is often helpful for evaluating your model's performance. You can quickly load an
evaluation method with the 🤗 [Evaluate](https://huggingface.co/docs/evaluate/index) library. For this task, load
the [accuracy](https://huggingface.co/spaces/evaluate-metric/accuracy) metric (see the 🤗 Evaluate [quick tour](https://huggingface.co/docs/evaluate/a_quick_tour) to learn more about how to load and compute a metric):
```py
>>> import evaluate
>>> accuracy = evaluate.load("accuracy")
```
Then create a function that passes your predictions and labels to [`~evaluate.EvaluationModule.compute`] to calculate the accuracy:
```py
>>> import numpy as np
>>> def compute_metrics(eval_pred):
... predictions, labels = eval_pred
... predictions = np.argmax(predictions, axis=1)
... return accuracy.compute(predictions=predictions, references=labels)
```
Your `compute_metrics` function is ready to go now, and you'll return to it when you set up your training.
## Train
<frameworkcontent>
<pt>
<Tip>
If you aren't familiar with finetuning a model with the [`Trainer`], take a look at the basic tutorial [here](../training#train-with-pytorch-trainer)!
</Tip>
You're ready to start training your model now! Load ViT with [`AutoModelForImageClassification`]. Specify the number of labels along with the number of expected labels, and the label mappings:
```py
>>> from transformers import AutoModelForImageClassification, TrainingArguments, Trainer
>>> model = AutoModelForImageClassification.from_pretrained(
... checkpoint,
... num_labels=len(labels),
... id2label=id2label,
... label2id=label2id,
... )
```
At this point, only three steps remain:
1. Define your training hyperparameters in [`TrainingArguments`]. It is important you don't remove unused columns because that'll drop the `image` column. Without the `image` column, you can't create `pixel_values`. Set `remove_unused_columns=False` to prevent this behavior! The only other required parameter is `output_dir` which specifies where to save your model. You'll push this model to the Hub by setting `push_to_hub=True` (you need to be signed in to Hugging Face to upload your model). At the end of each epoch, the [`Trainer`] will evaluate the accuracy and save the training checkpoint.
2. Pass the training arguments to [`Trainer`] along with the model, dataset, tokenizer, data collator, and `compute_metrics` function.
3. Call [`~Trainer.train`] to finetune your model.
```py
>>> training_args = TrainingArguments(
... output_dir="my_awesome_food_model",
... remove_unused_columns=False,
... eval_strategy="epoch",
... save_strategy="epoch",
... learning_rate=5e-5,
... per_device_train_batch_size=16,
... gradient_accumulation_steps=4,
... per_device_eval_batch_size=16,
... num_train_epochs=3,
... warmup_ratio=0.1,
... logging_steps=10,
... load_best_model_at_end=True,
... metric_for_best_model="accuracy",
... push_to_hub=True,
... )
>>> trainer = Trainer(
... model=model,
... args=training_args,
... data_collator=data_collator,
... train_dataset=food["train"],
... eval_dataset=food["test"],
... tokenizer=image_processor,
... compute_metrics=compute_metrics,
... )
>>> trainer.train()
```
Once training is completed, share your model to the Hub with the [`~transformers.Trainer.push_to_hub`] method so everyone can use your model:
```py
>>> trainer.push_to_hub()
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
<Tip>
If you are unfamiliar with fine-tuning a model with Keras, check out the [basic tutorial](./training#train-a-tensorflow-model-with-keras) first!
</Tip>
To fine-tune a model in TensorFlow, follow these steps:
1. Define the training hyperparameters, and set up an optimizer and a learning rate schedule.
2. Instantiate a pre-trained model.
3. Convert a 🤗 Dataset to a `tf.data.Dataset`.
4. Compile your model.
5. Add callbacks and use the `fit()` method to run the training.
6. Upload your model to 🤗 Hub to share with the community.
Start by defining the hyperparameters, optimizer and learning rate schedule:
```py
>>> from transformers import create_optimizer
>>> batch_size = 16
>>> num_epochs = 5
>>> num_train_steps = len(food["train"]) * num_epochs
>>> learning_rate = 3e-5
>>> weight_decay_rate = 0.01
>>> optimizer, lr_schedule = create_optimizer(
... init_lr=learning_rate,
... num_train_steps=num_train_steps,
... weight_decay_rate=weight_decay_rate,
... num_warmup_steps=0,
... )
```
Then, load ViT with [`TFAutoModelForImageClassification`] along with the label mappings:
```py
>>> from transformers import TFAutoModelForImageClassification
>>> model = TFAutoModelForImageClassification.from_pretrained(
... checkpoint,
... id2label=id2label,
... label2id=label2id,
... )
```
Convert your datasets to the `tf.data.Dataset` format using the [`~datasets.Dataset.to_tf_dataset`] and your `data_collator`:
```py
>>> # converting our train dataset to tf.data.Dataset
>>> tf_train_dataset = food["train"].to_tf_dataset(
... columns="pixel_values", label_cols="label", shuffle=True, batch_size=batch_size, collate_fn=data_collator
... )
>>> # converting our test dataset to tf.data.Dataset
>>> tf_eval_dataset = food["test"].to_tf_dataset(
... columns="pixel_values", label_cols="label", shuffle=True, batch_size=batch_size, collate_fn=data_collator
... )
```
Configure the model for training with `compile()`:
```py
>>> from tensorflow.keras.losses import SparseCategoricalCrossentropy
>>> loss = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True)
>>> model.compile(optimizer=optimizer, loss=loss)
```
To compute the accuracy from the predictions and push your model to the 🤗 Hub, use [Keras callbacks](../main_classes/keras_callbacks).
Pass your `compute_metrics` function to [KerasMetricCallback](../main_classes/keras_callbacks#transformers.KerasMetricCallback),
and use the [PushToHubCallback](../main_classes/keras_callbacks#transformers.PushToHubCallback) to upload the model:
```py
>>> from transformers.keras_callbacks import KerasMetricCallback, PushToHubCallback
>>> metric_callback = KerasMetricCallback(metric_fn=compute_metrics, eval_dataset=tf_eval_dataset)
>>> push_to_hub_callback = PushToHubCallback(
... output_dir="food_classifier",
... tokenizer=image_processor,
... save_strategy="no",
... )
>>> callbacks = [metric_callback, push_to_hub_callback]
```
Finally, you are ready to train your model! Call `fit()` with your training and validation datasets, the number of epochs,
and your callbacks to fine-tune the model:
```py
>>> model.fit(tf_train_dataset, validation_data=tf_eval_dataset, epochs=num_epochs, callbacks=callbacks)
Epoch 1/5
250/250 [==============================] - 313s 1s/step - loss: 2.5623 - val_loss: 1.4161 - accuracy: 0.9290
Epoch 2/5
250/250 [==============================] - 265s 1s/step - loss: 0.9181 - val_loss: 0.6808 - accuracy: 0.9690
Epoch 3/5
250/250 [==============================] - 252s 1s/step - loss: 0.3910 - val_loss: 0.4303 - accuracy: 0.9820
Epoch 4/5
250/250 [==============================] - 251s 1s/step - loss: 0.2028 - val_loss: 0.3191 - accuracy: 0.9900
Epoch 5/5
250/250 [==============================] - 238s 949ms/step - loss: 0.1232 - val_loss: 0.3259 - accuracy: 0.9890
```
Congratulations! You have fine-tuned your model and shared it on the 🤗 Hub. You can now use it for inference!
</tf>
</frameworkcontent>
<Tip>
For a more in-depth example of how to finetune a model for image classification, take a look at the corresponding [PyTorch notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/image_classification.ipynb).
</Tip>
## Inference
Great, now that you've fine-tuned a model, you can use it for inference!
Load an image you'd like to run inference on:
```py
>>> ds = load_dataset("food101", split="validation[:10]")
>>> image = ds["image"][0]
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png" alt="image of beignets"/>
</div>
The simplest way to try out your finetuned model for inference is to use it in a [`pipeline`]. Instantiate a `pipeline` for image classification with your model, and pass your image to it:
```py
>>> from transformers import pipeline
>>> classifier = pipeline("image-classification", model="my_awesome_food_model")
>>> classifier(image)
[{'score': 0.31856709718704224, 'label': 'beignets'},
{'score': 0.015232225880026817, 'label': 'bruschetta'},
{'score': 0.01519392803311348, 'label': 'chicken_wings'},
{'score': 0.013022331520915031, 'label': 'pork_chop'},
{'score': 0.012728818692266941, 'label': 'prime_rib'}]
```
You can also manually replicate the results of the `pipeline` if you'd like:
<frameworkcontent>
<pt>
Load an image processor to preprocess the image and return the `input` as PyTorch tensors:
```py
>>> from transformers import AutoImageProcessor
>>> import torch
>>> image_processor = AutoImageProcessor.from_pretrained("my_awesome_food_model")
>>> inputs = image_processor(image, return_tensors="pt")
```
Pass your inputs to the model and return the logits:
```py
>>> from transformers import AutoModelForImageClassification
>>> model = AutoModelForImageClassification.from_pretrained("my_awesome_food_model")
>>> with torch.no_grad():
... logits = model(**inputs).logits
```
Get the predicted label with the highest probability, and use the model's `id2label` mapping to convert it to a label:
```py
>>> predicted_label = logits.argmax(-1).item()
>>> model.config.id2label[predicted_label]
'beignets'
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
Load an image processor to preprocess the image and return the `input` as TensorFlow tensors:
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("MariaK/food_classifier")
>>> inputs = image_processor(image, return_tensors="tf")
```
Pass your inputs to the model and return the logits:
```py
>>> from transformers import TFAutoModelForImageClassification
>>> model = TFAutoModelForImageClassification.from_pretrained("MariaK/food_classifier")
>>> logits = model(**inputs).logits
```
Get the predicted label with the highest probability, and use the model's `id2label` mapping to convert it to a label:
```py
>>> predicted_class_id = int(tf.math.argmax(logits, axis=-1)[0])
>>> model.config.id2label[predicted_class_id]
'beignets'
```
</tf>
</frameworkcontent>
|
transformers/docs/source/en/tasks/image_classification.md/0
|
{
"file_path": "transformers/docs/source/en/tasks/image_classification.md",
"repo_id": "transformers",
"token_count": 6142
}
| 282
|
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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# Text to speech
[[open-in-colab]]
Text-to-speech (TTS) is the task of creating natural-sounding speech from text, where the speech can be generated in multiple
languages and for multiple speakers. Several text-to-speech models are currently available in 🤗 Transformers, such as
[Bark](../model_doc/bark), [MMS](../model_doc/mms), [VITS](../model_doc/vits) and [SpeechT5](../model_doc/speecht5).
You can easily generate audio using the `"text-to-audio"` pipeline (or its alias - `"text-to-speech"`). Some models, like Bark,
can also be conditioned to generate non-verbal communications such as laughing, sighing and crying, or even add music.
Here's an example of how you would use the `"text-to-speech"` pipeline with Bark:
```py
>>> from transformers import pipeline
>>> pipe = pipeline("text-to-speech", model="suno/bark-small")
>>> text = "[clears throat] This is a test ... and I just took a long pause."
>>> output = pipe(text)
```
Here's a code snippet you can use to listen to the resulting audio in a notebook:
```python
>>> from IPython.display import Audio
>>> Audio(output["audio"], rate=output["sampling_rate"])
```
For more examples on what Bark and other pretrained TTS models can do, refer to our
[Audio course](https://huggingface.co/learn/audio-course/chapter6/pre-trained_models).
If you are looking to fine-tune a TTS model, the only text-to-speech models currently available in 🤗 Transformers
are [SpeechT5](model_doc/speecht5) and [FastSpeech2Conformer](model_doc/fastspeech2_conformer), though more will be added in the future. SpeechT5 is pre-trained on a combination of speech-to-text and text-to-speech data, allowing it to learn a unified space of hidden representations shared by both text and speech. This means that the same pre-trained model can be fine-tuned for different tasks. Furthermore, SpeechT5 supports multiple speakers through x-vector speaker embeddings.
The remainder of this guide illustrates how to:
1. Fine-tune [SpeechT5](../model_doc/speecht5) that was originally trained on English speech on the Dutch (`nl`) language subset of the [VoxPopuli](https://huggingface.co/datasets/facebook/voxpopuli) dataset.
2. Use your refined model for inference in one of two ways: using a pipeline or directly.
Before you begin, make sure you have all the necessary libraries installed:
```bash
pip install datasets soundfile speechbrain accelerate
```
Install 🤗Transformers from source as not all the SpeechT5 features have been merged into an official release yet:
```bash
pip install git+https://github.com/huggingface/transformers.git
```
<Tip>
To follow this guide you will need a GPU. If you're working in a notebook, run the following line to check if a GPU is available:
```bash
!nvidia-smi
```
or alternatively for AMD GPUs:
```bash
!rocm-smi
```
</Tip>
We encourage you to log in to your Hugging Face account to upload and share your model with the community. When prompted, enter your token to log in:
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## Load the dataset
[VoxPopuli](https://huggingface.co/datasets/facebook/voxpopuli) is a large-scale multilingual speech corpus consisting of
data sourced from 2009-2020 European Parliament event recordings. It contains labelled audio-transcription data for 15
European languages. In this guide, we are using the Dutch language subset, feel free to pick another subset.
Note that VoxPopuli or any other automated speech recognition (ASR) dataset may not be the most suitable
option for training TTS models. The features that make it beneficial for ASR, such as excessive background noise, are
typically undesirable in TTS. However, finding top-quality, multilingual, and multi-speaker TTS datasets can be quite
challenging.
Let's load the data:
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("facebook/voxpopuli", "nl", split="train")
>>> len(dataset)
20968
```
20968 examples should be sufficient for fine-tuning. SpeechT5 expects audio data to have a sampling rate of 16 kHz, so
make sure the examples in the dataset meet this requirement:
```py
dataset = dataset.cast_column("audio", Audio(sampling_rate=16000))
```
## Preprocess the data
Let's begin by defining the model checkpoint to use and loading the appropriate processor:
```py
>>> from transformers import SpeechT5Processor
>>> checkpoint = "microsoft/speecht5_tts"
>>> processor = SpeechT5Processor.from_pretrained(checkpoint)
```
### Text cleanup for SpeechT5 tokenization
Start by cleaning up the text data. You'll need the tokenizer part of the processor to process the text:
```py
>>> tokenizer = processor.tokenizer
```
The dataset examples contain `raw_text` and `normalized_text` features. When deciding which feature to use as the text input,
consider that the SpeechT5 tokenizer doesn't have any tokens for numbers. In `normalized_text` the numbers are written
out as text. Thus, it is a better fit, and we recommend using `normalized_text` as input text.
Because SpeechT5 was trained on the English language, it may not recognize certain characters in the Dutch dataset. If
left as is, these characters will be converted to `<unk>` tokens. However, in Dutch, certain characters like `à` are
used to stress syllables. In order to preserve the meaning of the text, we can replace this character with a regular `a`.
To identify unsupported tokens, extract all unique characters in the dataset using the `SpeechT5Tokenizer` which
works with characters as tokens. To do this, write the `extract_all_chars` mapping function that concatenates
the transcriptions from all examples into one string and converts it to a set of characters.
Make sure to set `batched=True` and `batch_size=-1` in `dataset.map()` so that all transcriptions are available at once for
the mapping function.
```py
>>> def extract_all_chars(batch):
... all_text = " ".join(batch["normalized_text"])
... vocab = list(set(all_text))
... return {"vocab": [vocab], "all_text": [all_text]}
>>> vocabs = dataset.map(
... extract_all_chars,
... batched=True,
... batch_size=-1,
... keep_in_memory=True,
... remove_columns=dataset.column_names,
... )
>>> dataset_vocab = set(vocabs["vocab"][0])
>>> tokenizer_vocab = {k for k, _ in tokenizer.get_vocab().items()}
```
Now you have two sets of characters: one with the vocabulary from the dataset and one with the vocabulary from the tokenizer.
To identify any unsupported characters in the dataset, you can take the difference between these two sets. The resulting
set will contain the characters that are in the dataset but not in the tokenizer.
```py
>>> dataset_vocab - tokenizer_vocab
{' ', 'à', 'ç', 'è', 'ë', 'í', 'ï', 'ö', 'ü'}
```
To handle the unsupported characters identified in the previous step, define a function that maps these characters to
valid tokens. Note that spaces are already replaced by `▁` in the tokenizer and don't need to be handled separately.
```py
>>> replacements = [
... ("à", "a"),
... ("ç", "c"),
... ("è", "e"),
... ("ë", "e"),
... ("í", "i"),
... ("ï", "i"),
... ("ö", "o"),
... ("ü", "u"),
... ]
>>> def cleanup_text(inputs):
... for src, dst in replacements:
... inputs["normalized_text"] = inputs["normalized_text"].replace(src, dst)
... return inputs
>>> dataset = dataset.map(cleanup_text)
```
Now that you have dealt with special characters in the text, it's time to shift focus to the audio data.
### Speakers
The VoxPopuli dataset includes speech from multiple speakers, but how many speakers are represented in the dataset? To
determine this, we can count the number of unique speakers and the number of examples each speaker contributes to the dataset.
With a total of 20,968 examples in the dataset, this information will give us a better understanding of the distribution of
speakers and examples in the data.
```py
>>> from collections import defaultdict
>>> speaker_counts = defaultdict(int)
>>> for speaker_id in dataset["speaker_id"]:
... speaker_counts[speaker_id] += 1
```
By plotting a histogram you can get a sense of how much data there is for each speaker.
```py
>>> import matplotlib.pyplot as plt
>>> plt.figure()
>>> plt.hist(speaker_counts.values(), bins=20)
>>> plt.ylabel("Speakers")
>>> plt.xlabel("Examples")
>>> plt.show()
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/tasks/tts_speakers_histogram.png" alt="Speakers histogram"/>
</div>
The histogram reveals that approximately one-third of the speakers in the dataset have fewer than 100 examples, while
around ten speakers have more than 500 examples. To improve training efficiency and balance the dataset, we can limit
the data to speakers with between 100 and 400 examples.
```py
>>> def select_speaker(speaker_id):
... return 100 <= speaker_counts[speaker_id] <= 400
>>> dataset = dataset.filter(select_speaker, input_columns=["speaker_id"])
```
Let's check how many speakers remain:
```py
>>> len(set(dataset["speaker_id"]))
42
```
Let's see how many examples are left:
```py
>>> len(dataset)
9973
```
You are left with just under 10,000 examples from approximately 40 unique speakers, which should be sufficient.
Note that some speakers with few examples may actually have more audio available if the examples are long. However,
determining the total amount of audio for each speaker requires scanning through the entire dataset, which is a
time-consuming process that involves loading and decoding each audio file. As such, we have chosen to skip this step here.
### Speaker embeddings
To enable the TTS model to differentiate between multiple speakers, you'll need to create a speaker embedding for each example.
The speaker embedding is an additional input into the model that captures a particular speaker's voice characteristics.
To generate these speaker embeddings, use the pre-trained [spkrec-xvect-voxceleb](https://huggingface.co/speechbrain/spkrec-xvect-voxceleb)
model from SpeechBrain.
Create a function `create_speaker_embedding()` that takes an input audio waveform and outputs a 512-element vector
containing the corresponding speaker embedding.
```py
>>> import os
>>> import torch
>>> from speechbrain.inference.classifiers import EncoderClassifier
>>> spk_model_name = "speechbrain/spkrec-xvect-voxceleb"
>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> speaker_model = EncoderClassifier.from_hparams(
... source=spk_model_name,
... run_opts={"device": device},
... savedir=os.path.join("/tmp", spk_model_name),
... )
>>> def create_speaker_embedding(waveform):
... with torch.no_grad():
... speaker_embeddings = speaker_model.encode_batch(torch.tensor(waveform))
... speaker_embeddings = torch.nn.functional.normalize(speaker_embeddings, dim=2)
... speaker_embeddings = speaker_embeddings.squeeze().cpu().numpy()
... return speaker_embeddings
```
It's important to note that the `speechbrain/spkrec-xvect-voxceleb` model was trained on English speech from the VoxCeleb
dataset, whereas the training examples in this guide are in Dutch. While we believe that this model will still generate
reasonable speaker embeddings for our Dutch dataset, this assumption may not hold true in all cases.
For optimal results, we recommend training an X-vector model on the target speech first. This will ensure that the model
is better able to capture the unique voice characteristics present in the Dutch language.
### Processing the dataset
Finally, let's process the data into the format the model expects. Create a `prepare_dataset` function that takes in a
single example and uses the `SpeechT5Processor` object to tokenize the input text and load the target audio into a log-mel spectrogram.
It should also add the speaker embeddings as an additional input.
```py
>>> def prepare_dataset(example):
... audio = example["audio"]
... example = processor(
... text=example["normalized_text"],
... audio_target=audio["array"],
... sampling_rate=audio["sampling_rate"],
... return_attention_mask=False,
... )
... # strip off the batch dimension
... example["labels"] = example["labels"][0]
... # use SpeechBrain to obtain x-vector
... example["speaker_embeddings"] = create_speaker_embedding(audio["array"])
... return example
```
Verify the processing is correct by looking at a single example:
```py
>>> processed_example = prepare_dataset(dataset[0])
>>> list(processed_example.keys())
['input_ids', 'labels', 'stop_labels', 'speaker_embeddings']
```
Speaker embeddings should be a 512-element vector:
```py
>>> processed_example["speaker_embeddings"].shape
(512,)
```
The labels should be a log-mel spectrogram with 80 mel bins.
```py
>>> import matplotlib.pyplot as plt
>>> plt.figure()
>>> plt.imshow(processed_example["labels"].T)
>>> plt.show()
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/tasks/tts_logmelspectrogram_1.png" alt="Log-mel spectrogram with 80 mel bins"/>
</div>
Side note: If you find this spectrogram confusing, it may be due to your familiarity with the convention of placing low frequencies
at the bottom and high frequencies at the top of a plot. However, when plotting spectrograms as an image using the matplotlib library,
the y-axis is flipped and the spectrograms appear upside down.
Now apply the processing function to the entire dataset. This will take between 5 and 10 minutes.
```py
>>> dataset = dataset.map(prepare_dataset, remove_columns=dataset.column_names)
```
You'll see a warning saying that some examples in the dataset are longer than the maximum input length the model can handle (600 tokens).
Remove those examples from the dataset. Here we go even further and to allow for larger batch sizes we remove anything over 200 tokens.
```py
>>> def is_not_too_long(input_ids):
... input_length = len(input_ids)
... return input_length < 200
>>> dataset = dataset.filter(is_not_too_long, input_columns=["input_ids"])
>>> len(dataset)
8259
```
Next, create a basic train/test split:
```py
>>> dataset = dataset.train_test_split(test_size=0.1)
```
### Data collator
In order to combine multiple examples into a batch, you need to define a custom data collator. This collator will pad shorter sequences with padding
tokens, ensuring that all examples have the same length. For the spectrogram labels, the padded portions are replaced with the special value `-100`. This special value
instructs the model to ignore that part of the spectrogram when calculating the spectrogram loss.
```py
>>> from dataclasses import dataclass
>>> from typing import Any, Dict, List, Union
>>> @dataclass
... class TTSDataCollatorWithPadding:
... processor: Any
... def __call__(self, features: List[Dict[str, Union[List[int], torch.Tensor]]]) -> Dict[str, torch.Tensor]:
... input_ids = [{"input_ids": feature["input_ids"]} for feature in features]
... label_features = [{"input_values": feature["labels"]} for feature in features]
... speaker_features = [feature["speaker_embeddings"] for feature in features]
... # collate the inputs and targets into a batch
... batch = processor.pad(input_ids=input_ids, labels=label_features, return_tensors="pt")
... # replace padding with -100 to ignore loss correctly
... batch["labels"] = batch["labels"].masked_fill(batch.decoder_attention_mask.unsqueeze(-1).ne(1), -100)
... # not used during fine-tuning
... del batch["decoder_attention_mask"]
... # round down target lengths to multiple of reduction factor
... if model.config.reduction_factor > 1:
... target_lengths = torch.tensor([len(feature["input_values"]) for feature in label_features])
... target_lengths = target_lengths.new(
... [length - length % model.config.reduction_factor for length in target_lengths]
... )
... max_length = max(target_lengths)
... batch["labels"] = batch["labels"][:, :max_length]
... # also add in the speaker embeddings
... batch["speaker_embeddings"] = torch.tensor(speaker_features)
... return batch
```
In SpeechT5, the input to the decoder part of the model is reduced by a factor 2. In other words, it throws away every
other timestep from the target sequence. The decoder then predicts a sequence that is twice as long. Since the original
target sequence length may be odd, the data collator makes sure to round the maximum length of the batch down to be a
multiple of 2.
```py
>>> data_collator = TTSDataCollatorWithPadding(processor=processor)
```
## Train the model
Load the pre-trained model from the same checkpoint as you used for loading the processor:
```py
>>> from transformers import SpeechT5ForTextToSpeech
>>> model = SpeechT5ForTextToSpeech.from_pretrained(checkpoint)
```
The `use_cache=True` option is incompatible with gradient checkpointing. Disable it for training.
```py
>>> model.config.use_cache = False
```
Define the training arguments. Here we are not computing any evaluation metrics during the training process. Instead, we'll
only look at the loss:
```python
>>> from transformers import Seq2SeqTrainingArguments
>>> training_args = Seq2SeqTrainingArguments(
... output_dir="speecht5_finetuned_voxpopuli_nl", # change to a repo name of your choice
... per_device_train_batch_size=4,
... gradient_accumulation_steps=8,
... learning_rate=1e-5,
... warmup_steps=500,
... max_steps=4000,
... gradient_checkpointing=True,
... fp16=True,
... eval_strategy="steps",
... per_device_eval_batch_size=2,
... save_steps=1000,
... eval_steps=1000,
... logging_steps=25,
... report_to=["tensorboard"],
... load_best_model_at_end=True,
... greater_is_better=False,
... label_names=["labels"],
... push_to_hub=True,
... )
```
Instantiate the `Trainer` object and pass the model, dataset, and data collator to it.
```py
>>> from transformers import Seq2SeqTrainer
>>> trainer = Seq2SeqTrainer(
... args=training_args,
... model=model,
... train_dataset=dataset["train"],
... eval_dataset=dataset["test"],
... data_collator=data_collator,
... tokenizer=processor,
... )
```
And with that, you're ready to start training! Training will take several hours. Depending on your GPU,
it is possible that you will encounter a CUDA "out-of-memory" error when you start training. In this case, you can reduce
the `per_device_train_batch_size` incrementally by factors of 2 and increase `gradient_accumulation_steps` by 2x to compensate.
```py
>>> trainer.train()
```
To be able to use your checkpoint with a pipeline, make sure to save the processor with the checkpoint:
```py
>>> processor.save_pretrained("YOUR_ACCOUNT_NAME/speecht5_finetuned_voxpopuli_nl")
```
Push the final model to the 🤗 Hub:
```py
>>> trainer.push_to_hub()
```
## Inference
### Inference with a pipeline
Great, now that you've fine-tuned a model, you can use it for inference!
First, let's see how you can use it with a corresponding pipeline. Let's create a `"text-to-speech"` pipeline with your
checkpoint:
```py
>>> from transformers import pipeline
>>> pipe = pipeline("text-to-speech", model="YOUR_ACCOUNT_NAME/speecht5_finetuned_voxpopuli_nl")
```
Pick a piece of text in Dutch you'd like narrated, e.g.:
```py
>>> text = "hallo allemaal, ik praat nederlands. groetjes aan iedereen!"
```
To use SpeechT5 with the pipeline, you'll need a speaker embedding. Let's get it from an example in the test dataset:
```py
>>> example = dataset["test"][304]
>>> speaker_embeddings = torch.tensor(example["speaker_embeddings"]).unsqueeze(0)
```
Now you can pass the text and speaker embeddings to the pipeline, and it will take care of the rest:
```py
>>> forward_params = {"speaker_embeddings": speaker_embeddings}
>>> output = pipe(text, forward_params=forward_params)
>>> output
{'audio': array([-6.82714235e-05, -4.26525949e-04, 1.06134125e-04, ...,
-1.22392643e-03, -7.76011671e-04, 3.29112721e-04], dtype=float32),
'sampling_rate': 16000}
```
You can then listen to the result:
```py
>>> from IPython.display import Audio
>>> Audio(output['audio'], rate=output['sampling_rate'])
```
### Run inference manually
You can achieve the same inference results without using the pipeline, however, more steps will be required.
Load the model from the 🤗 Hub:
```py
>>> model = SpeechT5ForTextToSpeech.from_pretrained("YOUR_ACCOUNT/speecht5_finetuned_voxpopuli_nl")
```
Pick an example from the test dataset obtain a speaker embedding.
```py
>>> example = dataset["test"][304]
>>> speaker_embeddings = torch.tensor(example["speaker_embeddings"]).unsqueeze(0)
```
Define the input text and tokenize it.
```py
>>> text = "hallo allemaal, ik praat nederlands. groetjes aan iedereen!"
>>> inputs = processor(text=text, return_tensors="pt")
```
Create a spectrogram with your model:
```py
>>> spectrogram = model.generate_speech(inputs["input_ids"], speaker_embeddings)
```
Visualize the spectrogram, if you'd like to:
```py
>>> plt.figure()
>>> plt.imshow(spectrogram.T)
>>> plt.show()
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/tasks/tts_logmelspectrogram_2.png" alt="Generated log-mel spectrogram"/>
</div>
Finally, use the vocoder to turn the spectrogram into sound.
```py
>>> with torch.no_grad():
... speech = vocoder(spectrogram)
>>> from IPython.display import Audio
>>> Audio(speech.numpy(), rate=16000)
```
In our experience, obtaining satisfactory results from this model can be challenging. The quality of the speaker
embeddings appears to be a significant factor. Since SpeechT5 was pre-trained with English x-vectors, it performs best
when using English speaker embeddings. If the synthesized speech sounds poor, try using a different speaker embedding.
Increasing the training duration is also likely to enhance the quality of the results. Even so, the speech clearly is Dutch instead of English, and it does
capture the voice characteristics of the speaker (compare to the original audio in the example).
Another thing to experiment with is the model's configuration. For example, try using `config.reduction_factor = 1` to
see if this improves the results.
Finally, it is essential to consider ethical considerations. Although TTS technology has numerous useful applications, it
may also be used for malicious purposes, such as impersonating someone's voice without their knowledge or consent. Please
use TTS judiciously and responsibly.
|
transformers/docs/source/en/tasks/text-to-speech.md/0
|
{
"file_path": "transformers/docs/source/en/tasks/text-to-speech.md",
"repo_id": "transformers",
"token_count": 7356
}
| 283
|
<!---
Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Troubleshoot
Sometimes errors occur, but we are here to help! This guide covers some of the most common issues we've seen and how you can resolve them. However, this guide isn't meant to be a comprehensive collection of every 🤗 Transformers issue. For more help with troubleshooting your issue, try:
<Youtube id="S2EEG3JIt2A"/>
1. Asking for help on the [forums](https://discuss.huggingface.co/). There are specific categories you can post your question to, like [Beginners](https://discuss.huggingface.co/c/beginners/5) or [🤗 Transformers](https://discuss.huggingface.co/c/transformers/9). Make sure you write a good descriptive forum post with some reproducible code to maximize the likelihood that your problem is solved!
<Youtube id="_PAli-V4wj0"/>
2. Create an [Issue](https://github.com/huggingface/transformers/issues/new/choose) on the 🤗 Transformers repository if it is a bug related to the library. Try to include as much information describing the bug as possible to help us better figure out what's wrong and how we can fix it.
3. Check the [Migration](migration) guide if you use an older version of 🤗 Transformers since some important changes have been introduced between versions.
For more details about troubleshooting and getting help, take a look at [Chapter 8](https://huggingface.co/course/chapter8/1?fw=pt) of the Hugging Face course.
## Firewalled environments
Some GPU instances on cloud and intranet setups are firewalled to external connections, resulting in a connection error. When your script attempts to download model weights or datasets, the download will hang and then timeout with the following message:
```
ValueError: Connection error, and we cannot find the requested files in the cached path.
Please try again or make sure your Internet connection is on.
```
In this case, you should try to run 🤗 Transformers on [offline mode](installation#offline-mode) to avoid the connection error.
## CUDA out of memory
Training large models with millions of parameters can be challenging without the appropriate hardware. A common error you may encounter when the GPU runs out of memory is:
```
CUDA out of memory. Tried to allocate 256.00 MiB (GPU 0; 11.17 GiB total capacity; 9.70 GiB already allocated; 179.81 MiB free; 9.85 GiB reserved in total by PyTorch)
```
Here are some potential solutions you can try to lessen memory use:
- Reduce the [`per_device_train_batch_size`](main_classes/trainer#transformers.TrainingArguments.per_device_train_batch_size) value in [`TrainingArguments`].
- Try using [`gradient_accumulation_steps`](main_classes/trainer#transformers.TrainingArguments.gradient_accumulation_steps) in [`TrainingArguments`] to effectively increase overall batch size.
<Tip>
Refer to the Performance [guide](performance) for more details about memory-saving techniques.
</Tip>
## Unable to load a saved TensorFlow model
TensorFlow's [model.save](https://www.tensorflow.org/tutorials/keras/save_and_load#save_the_entire_model) method will save the entire model - architecture, weights, training configuration - in a single file. However, when you load the model file again, you may run into an error because 🤗 Transformers may not load all the TensorFlow-related objects in the model file. To avoid issues with saving and loading TensorFlow models, we recommend you:
- Save the model weights as a `h5` file extension with [`model.save_weights`](https://www.tensorflow.org/tutorials/keras/save_and_load#save_the_entire_model) and then reload the model with [`~TFPreTrainedModel.from_pretrained`]:
```py
>>> from transformers import TFPreTrainedModel
>>> from tensorflow import keras
>>> model.save_weights("some_folder/tf_model.h5")
>>> model = TFPreTrainedModel.from_pretrained("some_folder")
```
- Save the model with [`~TFPretrainedModel.save_pretrained`] and load it again with [`~TFPreTrainedModel.from_pretrained`]:
```py
>>> from transformers import TFPreTrainedModel
>>> model.save_pretrained("path_to/model")
>>> model = TFPreTrainedModel.from_pretrained("path_to/model")
```
## ImportError
Another common error you may encounter, especially if it is a newly released model, is `ImportError`:
```
ImportError: cannot import name 'ImageGPTImageProcessor' from 'transformers' (unknown location)
```
For these error types, check to make sure you have the latest version of 🤗 Transformers installed to access the most recent models:
```bash
pip install transformers --upgrade
```
## CUDA error: device-side assert triggered
Sometimes you may run into a generic CUDA error about an error in the device code.
```
RuntimeError: CUDA error: device-side assert triggered
```
You should try to run the code on a CPU first to get a more descriptive error message. Add the following environment variable to the beginning of your code to switch to a CPU:
```py
>>> import os
>>> os.environ["CUDA_VISIBLE_DEVICES"] = ""
```
Another option is to get a better traceback from the GPU. Add the following environment variable to the beginning of your code to get the traceback to point to the source of the error:
```py
>>> import os
>>> os.environ["CUDA_LAUNCH_BLOCKING"] = "1"
```
## Incorrect output when padding tokens aren't masked
In some cases, the output `hidden_state` may be incorrect if the `input_ids` include padding tokens. To demonstrate, load a model and tokenizer. You can access a model's `pad_token_id` to see its value. The `pad_token_id` may be `None` for some models, but you can always manually set it.
```py
>>> from transformers import AutoModelForSequenceClassification
>>> import torch
>>> model = AutoModelForSequenceClassification.from_pretrained("google-bert/bert-base-uncased")
>>> model.config.pad_token_id
0
```
The following example shows the output without masking the padding tokens:
```py
>>> input_ids = torch.tensor([[7592, 2057, 2097, 2393, 9611, 2115], [7592, 0, 0, 0, 0, 0]])
>>> output = model(input_ids)
>>> print(output.logits)
tensor([[ 0.0082, -0.2307],
[ 0.1317, -0.1683]], grad_fn=<AddmmBackward0>)
```
Here is the actual output of the second sequence:
```py
>>> input_ids = torch.tensor([[7592]])
>>> output = model(input_ids)
>>> print(output.logits)
tensor([[-0.1008, -0.4061]], grad_fn=<AddmmBackward0>)
```
Most of the time, you should provide an `attention_mask` to your model to ignore the padding tokens to avoid this silent error. Now the output of the second sequence matches its actual output:
<Tip>
By default, the tokenizer creates an `attention_mask` for you based on your specific tokenizer's defaults.
</Tip>
```py
>>> attention_mask = torch.tensor([[1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0]])
>>> output = model(input_ids, attention_mask=attention_mask)
>>> print(output.logits)
tensor([[ 0.0082, -0.2307],
[-0.1008, -0.4061]], grad_fn=<AddmmBackward0>)
```
🤗 Transformers doesn't automatically create an `attention_mask` to mask a padding token if it is provided because:
- Some models don't have a padding token.
- For some use-cases, users want a model to attend to a padding token.
## ValueError: Unrecognized configuration class XYZ for this kind of AutoModel
Generally, we recommend using the [`AutoModel`] class to load pretrained instances of models. This class
can automatically infer and load the correct architecture from a given checkpoint based on the configuration. If you see
this `ValueError` when loading a model from a checkpoint, this means the Auto class couldn't find a mapping from
the configuration in the given checkpoint to the kind of model you are trying to load. Most commonly, this happens when a
checkpoint doesn't support a given task.
For instance, you'll see this error in the following example because there is no GPT2 for question answering:
```py
>>> from transformers import AutoProcessor, AutoModelForQuestionAnswering
>>> processor = AutoProcessor.from_pretrained("openai-community/gpt2-medium")
>>> model = AutoModelForQuestionAnswering.from_pretrained("openai-community/gpt2-medium")
ValueError: Unrecognized configuration class <class 'transformers.models.gpt2.configuration_gpt2.GPT2Config'> for this kind of AutoModel: AutoModelForQuestionAnswering.
Model type should be one of AlbertConfig, BartConfig, BertConfig, BigBirdConfig, BigBirdPegasusConfig, BloomConfig, ...
```
|
transformers/docs/source/en/troubleshooting.md/0
|
{
"file_path": "transformers/docs/source/en/troubleshooting.md",
"repo_id": "transformers",
"token_count": 2569
}
| 284
|
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# Exportar modelos 🤗 Transformers
Si necesitas implementar modelos 🤗 Transformers en entornos de producción, te
recomendamos exportarlos a un formato serializado que se pueda cargar y ejecutar
en tiempos de ejecución y hardware especializados. En esta guía, te mostraremos cómo
exportar modelos 🤗 Transformers en dos formatos ampliamente utilizados: ONNX y TorchScript.
Una vez exportado, un modelo puede optimizarse para la inferencia a través de técnicas
como la cuantización y _pruning_. Si estás interesado en optimizar tus modelos para
que funcionen con la máxima eficiencia, consulta la
[biblioteca de 🤗 Optimum](https://github.com/huggingface/optimum).
## ONNX
El proyecto [ONNX (Open Neural Network eXchange)](http://onnx.ai) es un
estándar abierto que define un conjunto común de operadores y un formato
de archivo común para representar modelos de aprendizaje profundo en una
amplia variedad de _frameworks_, incluidos PyTorch y TensorFlow. Cuando un modelo
se exporta al formato ONNX, estos operadores se usan para construir un
grafo computacional (a menudo llamado _representación intermedia_) que
representa el flujo de datos a través de la red neuronal.
Al exponer un grafo con operadores y tipos de datos estandarizados, ONNX facilita
el cambio entre frameworks. Por ejemplo, un modelo entrenado en PyTorch se puede
exportar a formato ONNX y luego importar en TensorFlow (y viceversa).
🤗 Transformers proporciona un paquete llamado `transformers.onnx`, el cual permite convertir
los checkpoints de un modelo en un grafo ONNX aprovechando los objetos de configuración.
Estos objetos de configuración están hechos a la medida de diferentes arquitecturas de modelos
y están diseñados para ser fácilmente extensibles a otras arquitecturas.
Las configuraciones a la medida incluyen las siguientes arquitecturas:
<!--This table is automatically generated by `make fix-copies`, do not fill manually!-->
- ALBERT
- BART
- BEiT
- BERT
- BigBird
- BigBird-Pegasus
- Blenderbot
- BlenderbotSmall
- BLOOM
- CamemBERT
- CLIP
- CodeGen
- ConvBERT
- ConvNeXT
- ConvNeXTV2
- Data2VecText
- Data2VecVision
- DeBERTa
- DeBERTa-v2
- DeiT
- DETR
- DistilBERT
- ELECTRA
- FlauBERT
- GPT Neo
- GPT-J
- I-BERT
- LayoutLM
- LayoutLMv3
- LeViT
- LongT5
- M2M100
- Marian
- mBART
- MobileBERT
- MobileViT
- MT5
- OpenAI GPT-2
- Perceiver
- PLBart
- ResNet
- RoBERTa
- RoFormer
- SqueezeBERT
- T5
- ViT
- XLM
- XLM-RoBERTa
- XLM-RoBERTa-XL
- YOLOS
En las próximas dos secciones, te mostraremos cómo:
* Exportar un modelo compatible utilizando el paquete `transformers.onnx`.
* Exportar un modelo personalizado para una arquitectura no compatible.
### Exportar un model a ONNX
Para exportar un modelo 🤗 Transformers a ONNX, tienes que instalar primero algunas
dependencias extra:
```bash
pip install transformers[onnx]
```
El paquete `transformers.onnx` puede ser usado luego como un módulo de Python:
```bash
python -m transformers.onnx --help
usage: Hugging Face Transformers ONNX exporter [-h] -m MODEL [--feature {causal-lm, ...}] [--opset OPSET] [--atol ATOL] output
positional arguments:
output Path indicating where to store generated ONNX model.
optional arguments:
-h, --help show this help message and exit
-m MODEL, --model MODEL
Model ID on huggingface.co or path on disk to load model from.
--feature {causal-lm, ...}
The type of features to export the model with.
--opset OPSET ONNX opset version to export the model with.
--atol ATOL Absolute difference tolerence when validating the model.
```
Exportar un checkpoint usando una configuración a la medida se puede hacer de la siguiente manera:
```bash
python -m transformers.onnx --model=distilbert/distilbert-base-uncased onnx/
```
que debería mostrar los siguientes registros:
```bash
Validating ONNX model...
-[✓] ONNX model output names match reference model ({'last_hidden_state'})
- Validating ONNX Model output "last_hidden_state":
-[✓] (2, 8, 768) matches (2, 8, 768)
-[✓] all values close (atol: 1e-05)
All good, model saved at: onnx/model.onnx
```
Esto exporta un grafo ONNX del checkpoint definido por el argumento `--model`.
En este ejemplo, es un modelo `distilbert/distilbert-base-uncased`, pero puede ser cualquier
checkpoint en Hugging Face Hub o que esté almacenado localmente.
El archivo `model.onnx` resultante se puede ejecutar en uno de los
[muchos aceleradores](https://onnx.ai/supported-tools.html#deployModel)
que admiten el estándar ONNX. Por ejemplo, podemos cargar y ejecutar el
modelo con [ONNX Runtime](https://onnxruntime.ai/) de la siguiente manera:
```python
>>> from transformers import AutoTokenizer
>>> from onnxruntime import InferenceSession
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
>>> session = InferenceSession("onnx/model.onnx")
>>> # ONNX Runtime expects NumPy arrays as input
>>> inputs = tokenizer("Using DistilBERT with ONNX Runtime!", return_tensors="np")
>>> outputs = session.run(output_names=["last_hidden_state"], input_feed=dict(inputs))
```
Los nombres necesarios de salida (es decir, `["last_hidden_state"]`) se pueden obtener
echando un vistazo a la configuración ONNX de cada modelo. Por ejemplo, para DistilBERT tenemos:
```python
>>> from transformers.models.distilbert import DistilBertConfig, DistilBertOnnxConfig
>>> config = DistilBertConfig()
>>> onnx_config = DistilBertOnnxConfig(config)
>>> print(list(onnx_config.outputs.keys()))
["last_hidden_state"]s
```
El proceso es idéntico para los checkpoints de TensorFlow en Hub.
Por ejemplo, podemos exportar un checkpoint puro de TensorFlow desde
[Keras](https://huggingface.co/keras-io) de la siguiente manera:
```bash
python -m transformers.onnx --model=keras-io/transformers-qa onnx/
```
Para exportar un modelo que está almacenado localmente, deberás tener los pesos
y tokenizadores del modelo almacenados en un directorio. Por ejemplo, podemos cargar
y guardar un checkpoint de la siguiente manera:
<frameworkcontent>
<pt>
```python
>>> from transformers import AutoTokenizer, AutoModelForSequenceClassification
>>> # Load tokenizer and PyTorch weights form the Hub
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
>>> pt_model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
>>> # Save to disk
>>> tokenizer.save_pretrained("local-pt-checkpoint")
>>> pt_model.save_pretrained("local-pt-checkpoint")
```
Una vez que se guarda el checkpoint, podemos exportarlo a ONNX usando el argumento `--model`
del paquete `transformers.onnx` al directorio deseado:
```bash
python -m transformers.onnx --model=local-pt-checkpoint onnx/
```
</pt>
<tf>
```python
>>> from transformers import AutoTokenizer, TFAutoModelForSequenceClassification
>>> # Load tokenizer and TensorFlow weights from the Hub
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
>>> # Save to disk
>>> tokenizer.save_pretrained("local-tf-checkpoint")
>>> tf_model.save_pretrained("local-tf-checkpoint")
```
Una vez que se guarda el checkpoint, podemos exportarlo a ONNX usando el argumento `--model`
del paquete `transformers.onnx` al directorio deseado:
```bash
python -m transformers.onnx --model=local-tf-checkpoint onnx/
```
</tf>
</frameworkcontent>
### Seleccionar características para diferentes topologías de un modelo
Cada configuración a la medida viene con un conjunto de _características_ que te permiten exportar
modelos para diferentes tipos de topologías o tareas. Como se muestra en la siguiente tabla, cada
función está asociada con una auto-clase de automóvil diferente:
| Feature | Auto Class |
| ------------------------------------ | ------------------------------------ |
| `causal-lm`, `causal-lm-with-past` | `AutoModelForCausalLM` |
| `default`, `default-with-past` | `AutoModel` |
| `masked-lm` | `AutoModelForMaskedLM` |
| `question-answering` | `AutoModelForQuestionAnswering` |
| `seq2seq-lm`, `seq2seq-lm-with-past` | `AutoModelForSeq2SeqLM` |
| `sequence-classification` | `AutoModelForSequenceClassification` |
| `token-classification` | `AutoModelForTokenClassification` |
Para cada configuración, puedes encontrar la lista de funciones admitidas a través de `FeaturesManager`.
Por ejemplo, para DistilBERT tenemos:
```python
>>> from transformers.onnx.features import FeaturesManager
>>> distilbert_features = list(FeaturesManager.get_supported_features_for_model_type("distilbert").keys())
>>> print(distilbert_features)
["default", "masked-lm", "causal-lm", "sequence-classification", "token-classification", "question-answering"]
```
Le puedes pasar una de estas características al argumento `--feature` en el paquete `transformers.onnx`.
Por ejemplo, para exportar un modelo de clasificación de texto, podemos elegir un modelo ya ajustado del Hub y ejecutar:
```bash
python -m transformers.onnx --model=distilbert/distilbert-base-uncased-finetuned-sst-2-english \
--feature=sequence-classification onnx/
```
que mostrará los siguientes registros:
```bash
Validating ONNX model...
-[✓] ONNX model output names match reference model ({'logits'})
- Validating ONNX Model output "logits":
-[✓] (2, 2) matches (2, 2)
-[✓] all values close (atol: 1e-05)
All good, model saved at: onnx/model.onnx
```
Ten en cuenta que, en este caso, los nombres de salida del modelo ajustado son `logits` en lugar de `last_hidden_state`
que vimos anteriormente con el checkpoint `distilbert/distilbert-base-uncased`. Esto es de esperarse ya que el modelo ajustado
tiene un cabezal de clasificación secuencial.
<Tip>
Las características que tienen un sufijo 'with-past' (por ejemplo, 'causal-lm-with-past') corresponden a topologías
de modelo con estados ocultos precalculados (clave y valores en los bloques de atención) que se pueden usar para una
decodificación autorregresiva más rápida.
</Tip>
### Exportar un modelo para una arquitectura no compatible
Si deseas exportar un modelo cuya arquitectura no es compatible de forma nativa
con la biblioteca, debes seguir tres pasos principales:
1. Implementa una configuración personalizada en ONNX.
2. Exporta el modelo a ONNX.
3. Valide los resultados de PyTorch y los modelos exportados.
En esta sección, veremos cómo se implementó la serialización de DistilBERT
para mostrar lo que implica cada paso.
#### Implementar una configuración personalizada en ONNX
Comencemos con el objeto de configuración de ONNX. Proporcionamos tres clases abstractas
de las que debe heredar, según el tipo de arquitectura del modelo que quieras exportar:
* Modelos basados en el _Encoder_ inherente de [`~onnx.config.OnnxConfig`]
* Modelos basados en el _Decoder_ inherente de [`~onnx.config.OnnxConfigWithPast`]
* Modelos _Encoder-decoder_ inherente de [`~onnx.config.OnnxSeq2SeqConfigWithPast`]
<Tip>
Una buena manera de implementar una configuración personalizada en ONNX es observar la implementación
existente en el archivo `configuration_<model_name>.py` de una arquitectura similar.
</Tip>
Dado que DistilBERT es un modelo de tipo _encoder_, su configuración se hereda de `OnnxConfig`:
```python
>>> from typing import Mapping, OrderedDict
>>> from transformers.onnx import OnnxConfig
>>> class DistilBertOnnxConfig(OnnxConfig):
... @property
... def inputs(self) -> Mapping[str, Mapping[int, str]]:
... return OrderedDict(
... [
... ("input_ids", {0: "batch", 1: "sequence"}),
... ("attention_mask", {0: "batch", 1: "sequence"}),
... ]
... )
```
Cada objeto de configuración debe implementar la propiedad `inputs` y devolver un mapeo,
donde cada llave corresponde a una entrada esperada y cada valor indica el eje de esa entrada.
Para DistilBERT, podemos ver que se requieren dos entradas: `input_ids` y `attention_mask`.
Estas entradas tienen la misma forma de `(batch_size, sequence_length)`, es por lo que vemos
los mismos ejes utilizados en la configuración.
<Tip>
Observa que la propiedad `inputs` para `DistilBertOnnxConfig` devuelve un `OrderedDict`.
Esto nos asegura que las entradas coincidan con su posición relativa dentro del método
`PreTrainedModel.forward()` al rastrear el grafo. Recomendamos usar un `OrderedDict`
para las propiedades `inputs` y `outputs` al implementar configuraciones ONNX personalizadas.
</Tip>
Una vez que hayas implementado una configuración ONNX, puedes crear una
instancia proporcionando la configuración del modelo base de la siguiente manera:
```python
>>> from transformers import AutoConfig
>>> config = AutoConfig.from_pretrained("distilbert/distilbert-base-uncased")
>>> onnx_config = DistilBertOnnxConfig(config)
```
El objeto resultante tiene varias propiedades útiles. Por ejemplo, puedes ver el conjunto de operadores ONNX que se
utilizará durante la exportación:
```python
>>> print(onnx_config.default_onnx_opset)
11
```
También puedes ver los resultados asociados con el modelo de la siguiente manera:
```python
>>> print(onnx_config.outputs)
OrderedDict([("last_hidden_state", {0: "batch", 1: "sequence"})])
```
Observa que la propiedad de salidas sigue la misma estructura que las entradas;
devuelve un objecto `OrderedDict` de salidas nombradas y sus formas. La estructura
de salida está vinculada a la elección de la función con la que se inicializa la configuración.
Por defecto, la configuración de ONNX se inicializa con la función `default` que
corresponde a exportar un modelo cargado con la clase `AutoModel`. Si quieres exportar
una topología de modelo diferente, simplemente proporciona una característica diferente
al argumento `task` cuando inicialices la configuración de ONNX. Por ejemplo, si quisiéramos
exportar DistilBERT con un cabezal de clasificación de secuencias, podríamos usar:
```python
>>> from transformers import AutoConfig
>>> config = AutoConfig.from_pretrained("distilbert/distilbert-base-uncased")
>>> onnx_config_for_seq_clf = DistilBertOnnxConfig(config, task="sequence-classification")
>>> print(onnx_config_for_seq_clf.outputs)
OrderedDict([('logits', {0: 'batch'})])
```
<Tip>
Todas las propiedades base y métodos asociados con [`~onnx.config.OnnxConfig`] y las
otras clases de configuración se pueden sobreescribir si es necesario.
Consulte [`BartOnnxConfig`] para ver un ejemplo avanzado.
</Tip>
#### Exportar el modelo
Una vez que hayas implementado la configuración de ONNX, el siguiente paso es exportar el modelo.
Aquí podemos usar la función `export()` proporcionada por el paquete `transformers.onnx`.
Esta función espera la configuración de ONNX, junto con el modelo base y el tokenizador,
y la ruta para guardar el archivo exportado:
```python
>>> from pathlib import Path
>>> from transformers.onnx import export
>>> from transformers import AutoTokenizer, AutoModel
>>> onnx_path = Path("model.onnx")
>>> model_ckpt = "distilbert/distilbert-base-uncased"
>>> base_model = AutoModel.from_pretrained(model_ckpt)
>>> tokenizer = AutoTokenizer.from_pretrained(model_ckpt)
>>> onnx_inputs, onnx_outputs = export(tokenizer, base_model, onnx_config, onnx_config.default_onnx_opset, onnx_path)
```
Los objetos `onnx_inputs` y `onnx_outputs` devueltos por la función `export()`
son listas de llaves definidas en las propiedades `inputs` y `outputs` de la configuración.
Una vez exportado el modelo, puedes probar que el modelo está bien formado de la siguiente manera:
```python
>>> import onnx
>>> onnx_model = onnx.load("model.onnx")
>>> onnx.checker.check_model(onnx_model)
```
<Tip>
Si tu modelo tiene más de 2GB, verás que se crean muchos archivos adicionales durante la exportación.
Esto es _esperado_ porque ONNX usa [Búferes de protocolo](https://developers.google.com/protocol-buffers/)
para almacenar el modelo y éstos tienen un límite de tamaño de 2 GB. Consulta la
[documentación de ONNX](https://github.com/onnx/onnx/blob/master/docs/ExternalData.md) para obtener
instrucciones sobre cómo cargar modelos con datos externos.
</Tip>
#### Validar los resultados del modelo
El paso final es validar que los resultados del modelo base y exportado coincidan dentro
de cierta tolerancia absoluta. Aquí podemos usar la función `validate_model_outputs()`
proporcionada por el paquete `transformers.onnx` de la siguiente manera:
```python
>>> from transformers.onnx import validate_model_outputs
>>> validate_model_outputs(
... onnx_config, tokenizer, base_model, onnx_path, onnx_outputs, onnx_config.atol_for_validation
... )
```
Esta función usa el método `OnnxConfig.generate_dummy_inputs()` para generar entradas para el modelo base
y exportado, y la tolerancia absoluta se puede definir en la configuración. En general, encontramos una
concordancia numérica en el rango de 1e-6 a 1e-4, aunque es probable que cualquier valor menor que 1e-3 esté bien.
### Contribuir con una nueva configuración a 🤗 Transformers
¡Estamos buscando expandir el conjunto de configuraciones a la medida para usar y agradecemos las contribuciones de la comunidad!
Si deseas contribuir con su colaboración a la biblioteca, deberás:
* Implementa la configuración de ONNX en el archivo `configuration_<model_name>.py` correspondiente
* Incluye la arquitectura del modelo y las características correspondientes en [`~onnx.features.FeatureManager`]
* Agrega tu arquitectura de modelo a las pruebas en `test_onnx_v2.py`
Revisa cómo fue la contribución para la [configuración de IBERT](https://github.com/huggingface/transformers/pull/14868/files)
y así tener una idea de lo que necesito.
## TorchScript
<Tip>
Este es el comienzo de nuestros experimentos con TorchScript y todavía estamos explorando sus capacidades con modelos de
tamaño de entrada variable. Es un tema de interés y profundizaremos nuestro análisis en las próximas
versiones, con más ejemplos de código, una implementación más flexible y puntos de referencia que comparen códigos
basados en Python con TorchScript compilado.
</Tip>
Según la documentación de PyTorch: "TorchScript es una forma de crear modelos serializables y optimizables a partir del
código de PyTorch". Los dos módulos de Pytorch [JIT y TRACE](https://pytorch.org/docs/stable/jit.html) permiten al
desarrollador exportar su modelo para reutilizarlo en otros programas, como los programas C++ orientados a la eficiencia.
Hemos proporcionado una interfaz que permite exportar modelos de 🤗 Transformers a TorchScript para que puedan reutilizarse
en un entorno diferente al de un programa Python basado en PyTorch. Aquí explicamos cómo exportar y usar nuestros modelos
usando TorchScript.
Exportar un modelo requiere de dos cosas:
- un pase hacia adelante con entradas ficticias.
- instanciación del modelo con la indicador `torchscript`.
Estas necesidades implican varias cosas con las que los desarrolladores deben tener cuidado. Éstas se detallan a continuación.
### Indicador de TorchScript y pesos atados
Este indicador es necesario porque la mayoría de los modelos de lenguaje en este repositorio tienen pesos vinculados entre su capa
de `Embedding` y su capa de `Decoding`. TorchScript no permite la exportación de modelos que tengan pesos atados, por lo que es
necesario desvincular y clonar los pesos previamente.
Esto implica que los modelos instanciados con el indicador `torchscript` tienen su capa `Embedding` y `Decoding` separadas,
lo que significa que no deben entrenarse más adelante. El entrenamiento desincronizaría las dos capas, lo que generaría
resultados inesperados.
Este no es el caso de los modelos que no tienen un cabezal de modelo de lenguaje, ya que no tienen pesos atados.
Estos modelos se pueden exportar de forma segura sin el indicador `torchscript`.
### Entradas ficticias y longitudes estándar
Las entradas ficticias se utilizan para crear un modelo de pase hacia adelante. Mientras los valores de las entradas se
propagan a través de las capas, PyTorch realiza un seguimiento de las diferentes operaciones ejecutadas en cada tensor.
Estas operaciones registradas se utilizan luego para crear el "rastro" del modelo.
El rastro se crea en relación con las dimensiones de las entradas. Por lo tanto, está limitado por las dimensiones de la
entrada ficticia y no funcionará para ninguna otra longitud de secuencia o tamaño de lote. Al intentar con un tamaño diferente,
un error como:
`The expanded size of the tensor (3) must match the existing size (7) at non-singleton dimension 2`
aparecerá. Por lo tanto, se recomienda rastrear el modelo con un tamaño de entrada ficticia al menos tan grande como la
entrada más grande que se alimentará al modelo durante la inferencia. El _padding_ se puede realizar para completar los
valores que faltan. Sin embargo, como el modelo se habrá rastreado con un tamaño de entrada grande, las dimensiones de
las diferentes matrices también serán grandes, lo que dará como resultado más cálculos.
Se recomienda tener cuidado con el número total de operaciones realizadas en cada entrada y seguir de cerca el rendimiento
al exportar modelos de longitud de secuencia variable.
### Usar TorchScript en Python
A continuación se muestra un ejemplo que muestra cómo guardar, cargar modelos y cómo usar el rastreo para la inferencia.
#### Guardando un modelo
Este fragmento muestra cómo usar TorchScript para exportar un `BertModel`. Aquí, el `BertModel` se instancia de acuerdo
con la clase `BertConfig` y luego se guarda en el disco con el nombre de archivo `traced_bert.pt`
```python
from transformers import BertModel, BertTokenizer, BertConfig
import torch
enc = BertTokenizer.from_pretrained("google-bert/bert-base-uncased")
# Tokenizing input text
text = "[CLS] Who was Jim Henson ? [SEP] Jim Henson was a puppeteer [SEP]"
tokenized_text = enc.tokenize(text)
# Masking one of the input tokens
masked_index = 8
tokenized_text[masked_index] = "[MASK]"
indexed_tokens = enc.convert_tokens_to_ids(tokenized_text)
segments_ids = [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1]
# Creating a dummy input
tokens_tensor = torch.tensor([indexed_tokens])
segments_tensors = torch.tensor([segments_ids])
dummy_input = [tokens_tensor, segments_tensors]
# Initializing the model with the torchscript flag
# Flag set to True even though it is not necessary as this model does not have an LM Head.
config = BertConfig(
vocab_size_or_config_json_file=32000,
hidden_size=768,
num_hidden_layers=12,
num_attention_heads=12,
intermediate_size=3072,
torchscript=True,
)
# Instantiating the model
model = BertModel(config)
# The model needs to be in evaluation mode
model.eval()
# If you are instantiating the model with *from_pretrained* you can also easily set the TorchScript flag
model = BertModel.from_pretrained("google-bert/bert-base-uncased", torchscript=True)
# Creating the trace
traced_model = torch.jit.trace(model, [tokens_tensor, segments_tensors])
torch.jit.save(traced_model, "traced_bert.pt")
```
#### Cargar un modelo
Este fragmento muestra cómo cargar el `BertModel` que se guardó previamente en el disco con el nombre `traced_bert.pt`.
Estamos reutilizando el `dummy_input` previamente inicializado.
```python
loaded_model = torch.jit.load("traced_bert.pt")
loaded_model.eval()
all_encoder_layers, pooled_output = loaded_model(*dummy_input)
```
#### Usar un modelo rastreado para la inferencia
Usar el modelo rastreado para la inferencia es tan simple como usar su método `__call__`:
```python
traced_model(tokens_tensor, segments_tensors)
```
### Implementar los modelos HuggingFace TorchScript en AWS mediante Neuron SDK
AWS presentó la familia de instancias [Amazon EC2 Inf1](https://aws.amazon.com/ec2/instance-types/inf1/) para la inferencia
de aprendizaje automático de bajo costo y alto rendimiento en la nube. Las instancias Inf1 funcionan con el chip AWS
Inferentia, un acelerador de hardware personalizado, que se especializa en cargas de trabajo de inferencia de aprendizaje
profundo. [AWS Neuron](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/#) es el kit de desarrollo para Inferentia
que admite el rastreo y la optimización de modelos de transformers para su implementación en Inf1. El SDK de Neuron proporciona:
1. API fácil de usar con una línea de cambio de código para rastrear y optimizar un modelo de TorchScript para la inferencia en la nube.
2. Optimizaciones de rendimiento listas para usar con un [costo-rendimiento mejorado](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/benchmark/>)
3. Soporte para modelos HuggingFace Transformers construidos con [PyTorch](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/pytorch/bert_tutorial/tutorial_pretrained_bert.html)
o [TensorFlow](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/tensorflow/huggingface_bert/huggingface_bert.html).
#### Implicaciones
Los modelos Transformers basados en la arquitectura
[BERT (Representaciones de _Enconder_ bidireccional de Transformers)](https://huggingface.co/docs/transformers/main/model_doc/bert),
o sus variantes, como [distilBERT](https://huggingface.co/docs/transformers/main/model_doc/distilbert) y
[roBERTa](https://huggingface.co/docs/transformers/main/model_doc/roberta), se ejecutarán mejor en Inf1 para tareas no
generativas, como la respuesta extractiva de preguntas, la clasificación de secuencias y la clasificación de tokens.
Como alternativa, las tareas de generación de texto se pueden adaptar para ejecutarse en Inf1, según este
[tutorial de AWS Neuron MarianMT](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/pytorch/transformers-marianmt.html).
Puedes encontrar más información sobre los modelos que están listos para usarse en Inferentia en la
[sección _Model Architecture Fit_ de la documentación de Neuron](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/models/models-inferentia.html#models-inferentia).
#### Dependencias
Usar AWS Neuron para convertir modelos requiere las siguientes dependencias y entornos:
* Un [entorno Neuron SDK](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/neuron-frameworks/pytorch-neuron/index.html#installation-guide),
que viene preconfigurado en [AWS Deep Learning AMI](https://docs.aws.amazon.com/dlami/latest/devguide/tutorial-inferentia-launching.html).
#### Convertir un modelo a AWS Neuron
Con el mismo script usado en [Uso de TorchScript en Python](https://huggingface.co/docs/transformers/main/es/serialization#using-torchscript-in-python)
para rastrear un "BertModel", puedes importar la extensión del _framework_ `torch.neuron` para acceder a los componentes
del SDK de Neuron a través de una API de Python.
```python
from transformers import BertModel, BertTokenizer, BertConfig
import torch
import torch.neuron
```
Y modificando la línea de código de rastreo de:
```python
torch.jit.trace(model, [tokens_tensor, segments_tensors])
```
con lo siguiente:
```python
torch.neuron.trace(model, [token_tensor, segments_tensors])
```
Este cambio permite a Neuron SDK rastrear el modelo y optimizarlo para ejecutarse en instancias Inf1.
Para obtener más información sobre las funciones, las herramientas, los tutoriales de ejemplo y las últimas actualizaciones
de AWS Neuron SDK, consulte la [documentación de AWS NeuronSDK](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/index.html).
|
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"repo_id": "transformers",
"token_count": 10517
}
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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-->
# Chargement d'instances pré-entraînées avec une AutoClass
Avec autant d'architectures Transformer différentes, il peut être difficile d'en créer une pour votre ensemble de poids (aussi appelés "weights" ou "checkpoint" en anglais). Dans l'idée de créer une librairie facile, simple et flexible à utiliser, 🤗 Transformers fournit une `AutoClass` qui infère et charge automatiquement l'architecture correcte à partir d'un ensemble de poids donné. La fonction `from_pretrained()` vous permet de charger rapidement un modèle pré-entraîné pour n'importe quelle architecture afin que vous n'ayez pas à consacrer du temps et des ressources à l'entraînement d'un modèle à partir de zéro. Produire un tel code indépendant d'un ensemble de poids signifie que si votre code fonctionne pour un ensemble de poids, il fonctionnera avec un autre ensemble - tant qu'il a été entraîné pour une tâche similaire - même si l'architecture est différente.
<Tip>
Rappel, l'architecture fait référence au squelette du modèle et l'ensemble de poids contient les poids pour une architecture donnée. Par exemple, [BERT](https://huggingface.co/google-bert/bert-base-uncased) est une architecture, tandis que `google-bert/bert-base-uncased` est un ensemble de poids. Le terme modèle est général et peut signifier soit architecture soit ensemble de poids.
</Tip>
Dans ce tutoriel, vous apprendrez à:
* Charger un tokenizer pré-entraîné.
* Charger un processeur d'image pré-entraîné.
* Charger un extracteur de caractéristiques pré-entraîné.
* Charger un processeur pré-entraîné.
* Charger un modèle pré-entraîné.
## AutoTokenizer
Quasiment toutes les tâches de traitement du langage (NLP) commencent avec un tokenizer. Un tokenizer convertit votre texte initial dans un format qui peut être traité par le modèle.
Chargez un tokenizer avec [`AutoTokenizer.from_pretrained`]:
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-uncased")
```
Puis, transformez votre texte initial comme montré ci-dessous:
```py
>>> sequence = "In a hole in the ground there lived a hobbit."
>>> print(tokenizer(sequence))
{'input_ids': [101, 1999, 1037, 4920, 1999, 1996, 2598, 2045, 2973, 1037, 7570, 10322, 4183, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
## AutoImageProcessor
Pour les tâches de vision, un processeur d'image traite l'image pour la formater correctment.
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224")
```
## AutoBackbone
<div style="text-align: center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/Swin%20Stages.png">
<figcaption class="mt-2 text-center text-sm text-gray-500">Un backbone Swin avec plusieurs étapes pour produire une carte de caractéristiques.</figcaption>
</div>
[`AutoBackbone`] vous permet d'utiliser des modèles pré-entraînés comme backbones pour obtenir des cartes de caractéristiques à partir de différentes étapes du backbone. Vous devez spécifier l'un des paramètres suivants dans [`~PretrainedConfig.from_pretrained`] :
* `out_indices` est l'index de la couche dont vous souhaitez obtenir la carte de caractéristiques
* `out_features` est le nom de la couche dont vous souhaitez obtenir la carte de caractéristiques
Ces paramètres peuvent être utilisés de manière interchangeable, mais si vous utilisez les deux, assurez-vous qu'ils sont alignés l'un avec l'autre ! Si vous ne passez aucun de ces paramètres, le backbone renvoie la carte de caractéristiques de la dernière couche.
<div style="text-align: center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/Swin%20Stage%201.png">
<figcaption class="mt-2 text-center text-sm text-gray-500">Une carte de caractéristiques de la première étape du backbone. La partition de patch fait référence à la tige du modèle.</figcaption>
</div>
Par exemple, dans le diagramme ci-dessus, pour renvoyer la carte de caractéristiques de la première étape du backbone Swin, vous pouvez définir `out_indices=(1,)` :
```py
>>> from transformers import AutoImageProcessor, AutoBackbone
>>> import torch
>>> from PIL import Image
>>> import requests
>>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> processor = AutoImageProcessor.from_pretrained("microsoft/swin-tiny-patch4-window7-224")
>>> model = AutoBackbone.from_pretrained("microsoft/swin-tiny-patch4-window7-224", out_indices=(1,))
>>> inputs = processor(image, return_tensors="pt")
>>> outputs = model(**inputs)
>>> feature_maps = outputs.feature_maps
```
Vous pouvez maintenant accéder à l'objet `feature_maps` de la première étape du backbone :
```py
>>> list(feature_maps[0].shape)
[1, 96, 56, 56]
```
## AutoFeatureExtractor
Pour les tâches audio, un extracteur de caractéristiques (aussi appelés "features" en anglais) traite le signal audio pour le formater correctement.
Chargez un extracteur de caractéristiques avec [`AutoFeatureExtractor.from_pretrained`]:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained(
... "ehcalabres/wav2vec2-lg-xlsr-en-speech-emotion-recognition"
... )
```
## AutoProcessor
Les tâches multimodales nécessitent un processeur qui combine deux types d'outils de prétraitement. Par exemple, le modèle [LayoutLMV2](model_doc/layoutlmv2) nécessite un processeur d'image pour traiter les images et un tokenizer pour traiter le texte ; un processeur combine les deux.
Chargez un processeur avec [`AutoProcessor.from_pretrained`]:
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("microsoft/layoutlmv2-base-uncased")
```
## AutoModel
<frameworkcontent>
<pt>
Enfin, les classes `AutoModelFor` vous permettent de charger un modèle pré-entraîné pour une tâche donnée (voir [ici](model_doc/auto) pour une liste complète des tâches disponibles). Par exemple, chargez un modèle pour la classification de séquence avec [`AutoModelForSequenceClassification.from_pretrained`]:
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Réutilisez facilement le même ensemble de poids pour charger une architecture pour une tâche différente :
```py
>>> from transformers import AutoModelForTokenClassification
>>> model = AutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip warning={true}>
Pour les modèles PyTorch, la fonction `from_pretrained()` utilise `torch.load()` qui utilise `pickle` en interne et est connu pour être non sécurisé. En général, ne chargez jamais un modèle qui pourrait provenir d'une source non fiable, ou qui pourrait avoir été altéré. Ce risque de sécurité est partiellement atténué pour les modèles hébergés publiquement sur le Hugging Face Hub, qui sont [scannés pour les logiciels malveillants](https://huggingface.co/docs/hub/security-malware) à chaque modification. Consultez la [documentation du Hub](https://huggingface.co/docs/hub/security) pour connaître les meilleures pratiques comme la [vérification des modifications signées](https://huggingface.co/docs/hub/security-gpg#signing-commits-with-gpg) avec GPG.
Les points de contrôle TensorFlow et Flax ne sont pas concernés, et peuvent être chargés dans des architectures PyTorch en utilisant les arguments `from_tf` et `from_flax` de la fonction `from_pretrained` pour contourner ce problème.
</Tip>
En général, nous recommandons d'utiliser les classes `AutoTokenizer` et `AutoModelFor` pour charger des instances pré-entraînées de tokenizers et modèles respectivement. Cela vous permettra de charger la bonne architecture à chaque fois. Dans le prochain [tutoriel](preprocessing), vous apprenez à utiliser un tokenizer, processeur d'image, extracteur de caractéristiques et processeur pour pré-traiter un jeu de données pour le fine-tuning.
</pt>
<tf>
Enfin, les classes `TFAutoModelFor` vous permettent de charger un modèle pré-entraîné pour une tâche donnée (voir [ici](model_doc/auto) pour une liste complète des tâches disponibles). Par exemple, chargez un modèle pour la classification de séquence avec [`TFAutoModelForSequenceClassification.from_pretrained`]:
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Réutilisez facilement le même ensemble de poids pour charger une architecture pour une tâche différente :
```py
>>> from transformers import TFAutoModelForTokenClassification
>>> model = TFAutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
En général, nous recommandons d'utiliser les classes `AutoTokenizer` et `TFAutoModelFor` pour charger des instances pré-entraînées de tokenizers et modèles respectivement. Cela vous permettra de charger la bonne architecture à chaque fois. Dans le prochain [tutoriel](preprocessing), vous apprenez à utiliser un tokenizer, processeur d'image, extracteur de caractéristiques et processeur pour pré-traiter un jeu de données pour le fine-tuning.
</tf>
</frameworkcontent>
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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-->
# Addestramento effciente su multiple CPU
Quando l'addestramento su una singola CPU è troppo lento, possiamo usare CPU multiple. Quasta guida si concentra su DDP basato su PyTorch abilitando l'addetramento distribuito su CPU in maniera efficiente.
## Intel® oneCCL Bindings per PyTorch
[Intel® oneCCL](https://github.com/oneapi-src/oneCCL) (collective communications library) è una libreria per l'addestramento efficiente del deep learning in distribuito e implementa collettivi come allreduce, allgather, alltoall. Per maggiori informazioni su oneCCL, fai riferimento a [oneCCL documentation](https://spec.oneapi.com/versions/latest/elements/oneCCL/source/index.html) e [oneCCL specification](https://spec.oneapi.com/versions/latest/elements/oneCCL/source/index.html).
Il modulo `oneccl_bindings_for_pytorch` (`torch_ccl` precedentemente alla versione 1.12) implementa PyTorch C10D ProcessGroup API e può essere caricato dinamicamente com external ProcessGroup e funziona solo su piattaforma Linux al momento.
Qui trovi informazioni più dettagliate per [oneccl_bind_pt](https://github.com/intel/torch-ccl).
### Intel® oneCCL Bindings per l'installazione PyTorch:
I file wheel sono disponibili per le seguenti versioni di Python:
| Extension Version | Python 3.6 | Python 3.7 | Python 3.8 | Python 3.9 | Python 3.10 |
| :---------------: | :--------: | :--------: | :--------: | :--------: | :---------: |
| 1.13.0 | | √ | √ | √ | √ |
| 1.12.100 | | √ | √ | √ | √ |
| 1.12.0 | | √ | √ | √ | √ |
| 1.11.0 | | √ | √ | √ | √ |
| 1.10.0 | √ | √ | √ | √ | |
```bash
pip install oneccl_bind_pt=={pytorch_version} -f https://developer.intel.com/ipex-whl-stable-cpu
```
dove `{pytorch_version}` deve essere la tua versione di PyTorch, per l'stanza 1.13.0.
Verifica altri approcci per [oneccl_bind_pt installation](https://github.com/intel/torch-ccl).
Le versioni di oneCCL e PyTorch devono combaciare.
<Tip warning={true}>
oneccl_bindings_for_pytorch 1.12.0 prebuilt wheel does not work with PyTorch 1.12.1 (it is for PyTorch 1.12.0)
PyTorch 1.12.1 should work with oneccl_bindings_for_pytorch 1.12.100
</Tip>
## Intel® MPI library
Usa questa implementazione basata su standard MPI per fornire una architettura flessibile, efficiente, scalabile su cluster per Intel®. Questo componente è parte di Intel® oneAPI HPC Toolkit.
oneccl_bindings_for_pytorch è installato insieme al set di strumenti MPI. Necessità di reperire l'ambiente prima di utilizzarlo.
per Intel® oneCCL >= 1.12.0
```bash
oneccl_bindings_for_pytorch_path=$(python -c "from oneccl_bindings_for_pytorch import cwd; print(cwd)")
source $oneccl_bindings_for_pytorch_path/env/setvars.sh
```
per Intel® oneCCL con versione < 1.12.0
```bash
torch_ccl_path=$(python -c "import torch; import torch_ccl; import os; print(os.path.abspath(os.path.dirname(torch_ccl.__file__)))")
source $torch_ccl_path/env/setvars.sh
```
#### Installazione IPEX:
IPEX fornisce ottimizzazioni delle prestazioni per l'addestramento della CPU sia con Float32 che con BFloat16; puoi fare riferimento a [single CPU section](./perf_train_cpu).
Il seguente "Utilizzo in Trainer" prende come esempio mpirun nella libreria Intel® MPI.
## Utilizzo in Trainer
Per abilitare l'addestramento distribuito multi CPU nel Trainer con il ccl backend, gli utenti devono aggiungere **`--ddp_backend ccl`** negli argomenti del comando.
Vediamo un esempio per il [question-answering example](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering)
Il seguente comando abilita due processi sul nodo Xeon, con un processo in esecuzione per ogni socket. Le variabili OMP_NUM_THREADS/CCL_WORKER_COUNT possono essere impostate per una prestazione ottimale.
```shell script
export CCL_WORKER_COUNT=1
export MASTER_ADDR=127.0.0.1
mpirun -n 2 -genv OMP_NUM_THREADS=23 \
python3 run_qa.py \
--model_name_or_path google-bert/bert-large-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
--no_cuda \
--ddp_backend ccl \
--use_ipex
```
Il seguente comando abilita l'addestramento per un totale di quattro processi su due Xeon (node0 e node1, prendendo node0 come processo principale), ppn (processes per node) è impostato a 2, on un processo in esecuzione per ogni socket. Le variabili OMP_NUM_THREADS/CCL_WORKER_COUNT possono essere impostate per una prestazione ottimale.
In node0, è necessario creare un file di configurazione che contenga gli indirizzi IP di ciascun nodo (per esempio hostfile) e passare il percorso del file di configurazione come parametro.
```shell script
cat hostfile
xxx.xxx.xxx.xxx #node0 ip
xxx.xxx.xxx.xxx #node1 ip
```
A questo punto, esegui il seguente comando nel nodo0 e **4DDP** sarà abilitato in node0 e node1 con BF16 auto mixed precision:
```shell script
export CCL_WORKER_COUNT=1
export MASTER_ADDR=xxx.xxx.xxx.xxx #node0 ip
mpirun -f hostfile -n 4 -ppn 2 \
-genv OMP_NUM_THREADS=23 \
python3 run_qa.py \
--model_name_or_path google-bert/bert-large-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
--no_cuda \
--ddp_backend ccl \
--use_ipex \
--bf16
```
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"repo_id": "transformers",
"token_count": 2568
}
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# BERTology
大規模なトランスフォーマー、例えばBERTの内部動作を調査する研究領域が急成長しています（これを「BERTology」とも呼びます）。この分野の良い例は以下です：
- BERT Rediscovers the Classical NLP Pipeline by Ian Tenney, Dipanjan Das, Ellie Pavlick:
[論文リンク](https://arxiv.org/abs/1905.05950)
- Are Sixteen Heads Really Better than One? by Paul Michel, Omer Levy, Graham Neubig: [論文リンク](https://arxiv.org/abs/1905.10650)
- What Does BERT Look At? An Analysis of BERT's Attention by Kevin Clark, Urvashi Khandelwal, Omer Levy, Christopher D. Manning: [論文リンク](https://arxiv.org/abs/1906.04341)
- CAT-probing: A Metric-based Approach to Interpret How Pre-trained Models for Programming Language Attend Code Structure: [論文リンク](https://arxiv.org/abs/2210.04633)
この新しい分野の発展を支援するために、BERT/GPT/GPT-2モデルにいくつかの追加機能を組み込み、人々が内部表現にアクセスできるようにしました。これらの機能は、主にPaul Michel氏の優れた研究（[論文リンク](https://arxiv.org/abs/1905.10650)）に基づいています。具体的には、以下の機能が含まれています：
- BERT/GPT/GPT-2のすべての隠れ状態にアクセスすることができます。
- BERT/GPT/GPT-2の各ヘッドの注意重みにアクセスできます。
- ヘッドの出力値と勾配を取得し、ヘッドの重要性スコアを計算し、[論文リンク](https://arxiv.org/abs/1905.10650)で説明されているようにヘッドを削減できます。
これらの機能を理解し、使用するのを支援するために、特定のサンプルスクリプト「[bertology.py](https://github.com/huggingface/transformers/tree/main/examples/research_projects/bertology/run_bertology.py)」を追加しました。このスクリプトは、GLUEで事前トレーニングされたモデルから情報を抽出し、ヘッドを削減する役割を果たします。
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{
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"repo_id": "transformers",
"token_count": 1077
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
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# Models
ベースクラスである [`PreTrainedModel`]、[`TFPreTrainedModel`]、[`FlaxPreTrainedModel`] は、モデルの読み込みと保存に関する共通のメソッドを実装しており、これはローカルのファイルやディレクトリから、またはライブラリが提供する事前学習モデル構成（HuggingFaceのAWS S3リポジトリからダウンロード）からモデルを読み込むために使用できます。
[`PreTrainedModel`] と [`TFPreTrainedModel`] は、次の共通のメソッドも実装しています：
- 語彙に新しいトークンが追加された場合に、入力トークン埋め込みのリサイズを行う
- モデルのアテンションヘッドを刈り込む
各モデルに共通するその他のメソッドは、[`~modeling_utils.ModuleUtilsMixin`]（PyTorchモデル用）および[`~modeling_tf_utils.TFModuleUtilsMixin`]（TensorFlowモデル用）で定義されており、テキスト生成の場合、[`~generation.GenerationMixin`]（PyTorchモデル用）、[`~generation.TFGenerationMixin`]（TensorFlowモデル用）、および[`~generation.FlaxGenerationMixin`]（Flax/JAXモデル用）もあります。
## PreTrainedModel
[[autodoc]] PreTrainedModel
- push_to_hub
- all
<a id='from_pretrained-torch-dtype'></a>
### 大規模モデルの読み込み
Transformers 4.20.0では、[`~PreTrainedModel.from_pretrained`] メソッドが再設計され、[Accelerate](https://huggingface.co/docs/accelerate/big_modeling) を使用して大規模モデルを扱うことが可能になりました。これには Accelerate >= 0.9.0 と PyTorch >= 1.9.0 が必要です。以前の方法でフルモデルを作成し、その後事前学習の重みを読み込む代わりに（これにはメモリ内のモデルサイズが2倍必要で、ランダムに初期化されたモデル用と重み用の2つが必要でした）、モデルを空の外殻として作成し、事前学習の重みが読み込まれるときにパラメーターを実体化するオプションが追加されました。
このオプションは `low_cpu_mem_usage=True` で有効にできます。モデルはまず空の重みを持つメタデバイス上に作成され、その後状態辞書が内部に読み込まれます（シャードされたチェックポイントの場合、シャードごとに読み込まれます）。この方法で使用される最大RAMは、モデルの完全なサイズだけです。
```py
from transformers import AutoModelForSeq2SeqLM
t0pp = AutoModelForSeq2SeqLM.from_pretrained("bigscience/T0pp", low_cpu_mem_usage=True)
```
さらに、モデルが完全にRAMに収まらない場合（現時点では推論のみ有効）、異なるデバイスにモデルを直接配置できます。`device_map="auto"` を使用すると、Accelerateは各レイヤーをどのデバイスに配置するかを決定し、最速のデバイス（GPU）を最大限に活用し、残りの部分をCPU、あるいはGPU RAMが不足している場合はハードドライブにオフロードします。モデルが複数のデバイスに分割されていても、通常どおり実行されます。
`device_map` を渡す際、`low_cpu_mem_usage` は自動的に `True` に設定されるため、それを指定する必要はありません。
```py
from transformers import AutoModelForSeq2SeqLM
t0pp = AutoModelForSeq2SeqLM.from_pretrained("bigscience/T0pp", device_map="auto")
```
モデルがデバイス間でどのように分割されたかは、その `hf_device_map` 属性を見ることで確認できます:
```py
t0pp.hf_device_map
```
```python out
{'shared': 0,
'decoder.embed_tokens': 0,
'encoder': 0,
'decoder.block.0': 0,
'decoder.block.1': 1,
'decoder.block.2': 1,
'decoder.block.3': 1,
'decoder.block.4': 1,
'decoder.block.5': 1,
'decoder.block.6': 1,
'decoder.block.7': 1,
'decoder.block.8': 1,
'decoder.block.9': 1,
'decoder.block.10': 1,
'decoder.block.11': 1,
'decoder.block.12': 1,
'decoder.block.13': 1,
'decoder.block.14': 1,
'decoder.block.15': 1,
'decoder.block.16': 1,
'decoder.block.17': 1,
'decoder.block.18': 1,
'decoder.block.19': 1,
'decoder.block.20': 1,
'decoder.block.21': 1,
'decoder.block.22': 'cpu',
'decoder.block.23': 'cpu',
'decoder.final_layer_norm': 'cpu',
'decoder.dropout': 'cpu',
'lm_head': 'cpu'}
```
同じフォーマットに従って、独自のデバイスマップを作成することもできます（レイヤー名からデバイスへの辞書です）。モデルのすべてのパラメータを指定されたデバイスにマップする必要がありますが、1つのレイヤーが完全に同じデバイスにある場合、そのレイヤーのサブモジュールのすべてがどこに行くかの詳細を示す必要はありません。例えば、次のデバイスマップはT0ppに適しています（GPUメモリがある場合）:
```python
device_map = {"shared": 0, "encoder": 0, "decoder": 1, "lm_head": 1}
```
モデルのメモリへの影響を最小限に抑えるもう 1 つの方法は、低精度の dtype (`torch.float16` など) でモデルをインスタンス化するか、以下で説明する直接量子化手法を使用することです。
### Model Instantiation dtype
Pytorch では、モデルは通常 `torch.float32` 形式でインスタンス化されます。これは、しようとすると問題になる可能性があります
重みが fp16 にあるモデルをロードすると、2 倍のメモリが必要になるためです。この制限を克服するには、次のことができます。
`torch_dtype` 引数を使用して、目的の `dtype` を明示的に渡します。
```python
model = T5ForConditionalGeneration.from_pretrained("t5", torch_dtype=torch.float16)
```
または、モデルを常に最適なメモリ パターンでロードしたい場合は、特別な値 `"auto"` を使用できます。
そして、`dtype` はモデルの重みから自動的に導出されます。
```python
model = T5ForConditionalGeneration.from_pretrained("t5", torch_dtype="auto")
```
スクラッチからインスタンス化されたモデルには、どの `dtype` を使用するかを指示することもできます。
```python
config = T5Config.from_pretrained("t5")
model = AutoModel.from_config(config)
```
Pytorch の設計により、この機能は浮動小数点 dtype でのみ使用できます。
## ModuleUtilsMixin
[[autodoc]] modeling_utils.ModuleUtilsMixin
## TFPreTrainedModel
[[autodoc]] TFPreTrainedModel
- push_to_hub
- all
## TFModelUtilsMixin
[[autodoc]] modeling_tf_utils.TFModelUtilsMixin
## FlaxPreTrainedModel
[[autodoc]] FlaxPreTrainedModel
- push_to_hub
- all
## Pushing to the Hub
[[autodoc]] utils.PushToHubMixin
## Sharded checkpoints
[[autodoc]] modeling_utils.load_sharded_checkpoint
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{
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"repo_id": "transformers",
"token_count": 3297
}
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Bark
## Overview
Bark は、[suno-ai/bark](https://github.com/suno-ai/bark) で Suno AI によって提案されたトランスフォーマーベースのテキスト読み上げモデルです。
Bark は 4 つの主要なモデルで構成されています。
- [`BarkSemanticModel`] ('テキスト'モデルとも呼ばれる): トークン化されたテキストを入力として受け取り、テキストの意味を捉えるセマンティック テキスト トークンを予測する因果的自己回帰変換モデル。
- [`BarkCoarseModel`] ('粗い音響' モデルとも呼ばれる): [`BarkSemanticModel`] モデルの結果を入力として受け取る因果的自己回帰変換器。 EnCodec に必要な最初の 2 つのオーディオ コードブックを予測することを目的としています。
- [`BarkFineModel`] ('微細音響' モデル)、今回は非因果的オートエンコーダー トランスフォーマーで、以前のコードブック埋め込みの合計に基づいて最後のコードブックを繰り返し予測します。
- [`EncodecModel`] からすべてのコードブック チャネルを予測したので、Bark はそれを使用して出力オーディオ配列をデコードします。
最初の 3 つのモジュールはそれぞれ、特定の事前定義された音声に従って出力サウンドを調整するための条件付きスピーカー埋め込みをサポートできることに注意してください。
### Optimizing Bark
Bark は、コードを数行追加するだけで最適化でき、**メモリ フットプリントが大幅に削減**され、**推論が高速化**されます。
#### Using half-precision
モデルを半精度でロードするだけで、推論を高速化し、メモリ使用量を 50% 削減できます。
```python
from transformers import BarkModel
import torch
device = "cuda" if torch.cuda.is_available() else "cpu"
model = BarkModel.from_pretrained("suno/bark-small", torch_dtype=torch.float16).to(device)
```
#### Using 🤗 Better Transformer
Better Transformer は、内部でカーネル融合を実行する 🤗 最適な機能です。パフォーマンスを低下させることなく、速度を 20% ～ 30% 向上させることができます。モデルを 🤗 Better Transformer にエクスポートするのに必要なコードは 1 行だけです。
```python
model = model.to_bettertransformer()
```
この機能を使用する前に 🤗 Optimum をインストールする必要があることに注意してください。 [インストール方法はこちら](https://huggingface.co/docs/optimum/installation)
#### Using CPU offload
前述したように、Bark は 4 つのサブモデルで構成されており、オーディオ生成中に順番に呼び出されます。言い換えれば、1 つのサブモデルが使用されている間、他のサブモデルはアイドル状態になります。
CUDA デバイスを使用している場合、メモリ フットプリントの 80% 削減による恩恵を受ける簡単な解決策は、アイドル状態の GPU のサブモデルをオフロードすることです。この操作は CPU オフロードと呼ばれます。 1行のコードで使用できます。
```python
model.enable_cpu_offload()
```
この機能を使用する前に、🤗 Accelerate をインストールする必要があることに注意してください。 [インストール方法はこちら](https://huggingface.co/docs/accelerate/basic_tutorials/install)
#### Combining optimization techniques
最適化手法を組み合わせて、CPU オフロード、半精度、🤗 Better Transformer をすべて一度に使用できます。
```python
from transformers import BarkModel
import torch
device = "cuda" if torch.cuda.is_available() else "cpu"
# load in fp16
model = BarkModel.from_pretrained("suno/bark-small", torch_dtype=torch.float16).to(device)
# convert to bettertransformer
model = BetterTransformer.transform(model, keep_original_model=False)
# enable CPU offload
model.enable_cpu_offload()
```
推論最適化手法の詳細については、[こちら](https://huggingface.co/docs/transformers/perf_infer_gpu_one) をご覧ください。
### Tips
Suno は、多くの言語で音声プリセットのライブラリを提供しています [こちら](https://suno-ai.notion.site/8b8e8749ed514b0cbf3f699013548683?v=bc67cff786b04b50b3ceb756fd05f68c)。
これらのプリセットは、ハブ [こちら](https://huggingface.co/suno/bark-small/tree/main/speaker_embeddings) または [こちら](https://huggingface.co/suno/bark/tree/main/speaker_embeddings)。
```python
>>> from transformers import AutoProcessor, BarkModel
>>> processor = AutoProcessor.from_pretrained("suno/bark")
>>> model = BarkModel.from_pretrained("suno/bark")
>>> voice_preset = "v2/en_speaker_6"
>>> inputs = processor("Hello, my dog is cute", voice_preset=voice_preset)
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
Bark は、非常にリアルな **多言語** 音声だけでなく、音楽、背景ノイズ、単純な効果音などの他の音声も生成できます。
```python
>>> # Multilingual speech - simplified Chinese
>>> inputs = processor("惊人的！我会说中文")
>>> # Multilingual speech - French - let's use a voice_preset as well
>>> inputs = processor("Incroyable! Je peux générer du son.", voice_preset="fr_speaker_5")
>>> # Bark can also generate music. You can help it out by adding music notes around your lyrics.
>>> inputs = processor("♪ Hello, my dog is cute ♪")
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
このモデルは、笑う、ため息、泣くなどの**非言語コミュニケーション**を生成することもできます。
```python
>>> # Adding non-speech cues to the input text
>>> inputs = processor("Hello uh ... [clears throat], my dog is cute [laughter]")
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
オーディオを保存するには、モデル設定と scipy ユーティリティからサンプル レートを取得するだけです。
```python
>>> from scipy.io.wavfile import write as write_wav
>>> # save audio to disk, but first take the sample rate from the model config
>>> sample_rate = model.generation_config.sample_rate
>>> write_wav("bark_generation.wav", sample_rate, audio_array)
```
このモデルは、[Yoach Lacombe (ylacombe)](https://huggingface.co/ylacombe) および [Sanchit Gandhi (sanchit-gandhi)](https://github.com/sanchit-gandhi) によって提供されました。
元のコードは [ここ](https://github.com/suno-ai/bark) にあります。
## BarkConfig
[[autodoc]] BarkConfig
- all
## BarkProcessor
[[autodoc]] BarkProcessor
- all
- __call__
## BarkModel
[[autodoc]] BarkModel
- generate
- enable_cpu_offload
## BarkSemanticModel
[[autodoc]] BarkSemanticModel
- forward
## BarkCoarseModel
[[autodoc]] BarkCoarseModel
- forward
## BarkFineModel
[[autodoc]] BarkFineModel
- forward
## BarkCausalModel
[[autodoc]] BarkCausalModel
- forward
## BarkCoarseConfig
[[autodoc]] BarkCoarseConfig
- all
## BarkFineConfig
[[autodoc]] BarkFineConfig
- all
## BarkSemanticConfig
[[autodoc]] BarkSemanticConfig
- all
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{
"file_path": "transformers/docs/source/ja/model_doc/bark.md",
"repo_id": "transformers",
"token_count": 3181
}
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# BLIP
## Overview
BLIP モデルは、[BLIP: Bootstrapping Language-Image Pre-training for Unified Vision-Language Understanding and Generation](https://arxiv.org/abs/2201.12086) で Junnan Li、Dongxu Li、Caiming Xiong、Steven Hoi によって提案されました。 。
BLIP は、次のようなさまざまなマルチモーダル タスクを実行できるモデルです。
- 視覚的な質問応答
- 画像とテキストの検索（画像とテキストのマッチング）
- 画像キャプション
論文の要約は次のとおりです。
*視覚言語事前トレーニング (VLP) により、多くの視覚言語タスクのパフォーマンスが向上しました。
ただし、既存の事前トレーニング済みモデルのほとんどは、理解ベースのタスクまたは世代ベースのタスクのいずれかでのみ優れています。さらに、最適ではない監視ソースである Web から収集されたノイズの多い画像とテキストのペアを使用してデータセットをスケールアップすることで、パフォーマンスの向上が大幅に達成されました。この論文では、視覚言語の理解と生成タスクの両方に柔軟に移行する新しい VLP フレームワークである BLIP を提案します。 BLIP は、キャプションをブートストラップすることでノイズの多い Web データを効果的に利用します。キャプショナーが合成キャプションを生成し、フィルターがノイズの多いキャプションを除去します。画像テキスト検索 (平均再現率 +2.7%@1)、画像キャプション作成 (CIDEr で +2.8%)、VQA ( VQA スコアは +1.6%)。 BLIP は、ゼロショット方式でビデオ言語タスクに直接転送した場合にも、強力な一般化能力を発揮します。コード、モデル、データセットがリリースされています。*
このモデルは [ybelkada](https://huggingface.co/ybelkada) によって提供されました。
元のコードは [ここ](https://github.com/salesforce/BLIP) にあります。
## Resources
- [Jupyter ノートブック](https://github.com/huggingface/notebooks/blob/main/examples/image_captioning_blip.ipynb) カスタム データセットの画像キャプション用に BLIP を微調整する方法
## BlipConfig
[[autodoc]] BlipConfig
- from_text_vision_configs
## BlipTextConfig
[[autodoc]] BlipTextConfig
## BlipVisionConfig
[[autodoc]] BlipVisionConfig
## BlipProcessor
[[autodoc]] BlipProcessor
## BlipImageProcessor
[[autodoc]] BlipImageProcessor
- preprocess
<frameworkcontent>
<pt>
## BlipModel
[[autodoc]] BlipModel
- forward
- get_text_features
- get_image_features
## BlipTextModel
[[autodoc]] BlipTextModel
- forward
## BlipVisionModel
[[autodoc]] BlipVisionModel
- forward
## BlipForConditionalGeneration
[[autodoc]] BlipForConditionalGeneration
- forward
## BlipForImageTextRetrieval
[[autodoc]] BlipForImageTextRetrieval
- forward
## BlipForQuestionAnswering
[[autodoc]] BlipForQuestionAnswering
- forward
</pt>
<tf>
## TFBlipModel
[[autodoc]] TFBlipModel
- call
- get_text_features
- get_image_features
## TFBlipTextModel
[[autodoc]] TFBlipTextModel
- call
## TFBlipVisionModel
[[autodoc]] TFBlipVisionModel
- call
## TFBlipForConditionalGeneration
[[autodoc]] TFBlipForConditionalGeneration
- call
## TFBlipForImageTextRetrieval
[[autodoc]] TFBlipForImageTextRetrieval
- call
## TFBlipForQuestionAnswering
[[autodoc]] TFBlipForQuestionAnswering
- call
</tf>
</frameworkcontent>
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{
"file_path": "transformers/docs/source/ja/model_doc/blip.md",
"repo_id": "transformers",
"token_count": 1785
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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# ConvBERT
<div class="flex flex-wrap space-x-1">
<a href="https://huggingface.co/models?filter=convbert">
<img alt="Models" src="https://img.shields.io/badge/All_model_pages-convbert-blueviolet">
</a>
<a href="https://huggingface.co/spaces/docs-demos/conv-bert-base">
<img alt="Spaces" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue">
</a>
</div>
## Overview
ConvBERT モデルは、[ConvBERT: Improving BERT with Span-based Dynamic Convolution](https://arxiv.org/abs/2008.02496) で Zihang Jiang、Weihao Yu、Daquan Zhou、Yunpeng Chen、Jiashi Feng、Shuicheng Yan によって提案されました。
やん。
論文の要約は次のとおりです。
*BERT やそのバリアントなどの事前トレーニング済み言語モデルは、最近、さまざまな環境で目覚ましいパフォーマンスを達成しています。
自然言語理解タスク。ただし、BERT はグローバルな自己注意ブロックに大きく依存しているため、問題が発生します。
メモリ使用量と計算コストが大きくなります。すべての注意が入力シーケンス全体に対してクエリを実行しますが、
グローバルな観点からアテンション マップを生成すると、一部のヘッドはローカルな依存関係のみを学習する必要があることがわかります。
これは、計算の冗長性が存在することを意味します。したがって、我々は、新しいスパンベースの動的畳み込みを提案します。
これらのセルフアテンション ヘッドを置き換えて、ローカルの依存関係を直接モデル化します。新しいコンボリューションヘッドと、
自己注意の頭を休め、グローバルとローカルの両方の状況でより効率的な新しい混合注意ブロックを形成します
学ぶ。この混合注意設計を BERT に装備し、ConvBERT モデルを構築します。実験でわかったことは、
ConvBERT は、トレーニング コストが低く、さまざまな下流タスクにおいて BERT およびその亜種よりも大幅に優れたパフォーマンスを発揮します。
モデルパラメータが少なくなります。注目すべきことに、ConvBERTbase モデルは 86.4 GLUE スコアを達成し、ELECTRAbase よりも 0.7 高いのに対し、
トレーニングコストは 1/4 未満です。コードと事前トレーニングされたモデルがリリースされます。*
このモデルは、[abhishek](https://huggingface.co/abhishek) によって提供されました。オリジナルの実装が見つかります
ここ: https://github.com/yitu-opensource/ConvBert
## Usage tips
ConvBERT トレーニングのヒントは BERT のヒントと似ています。使用上のヒントについては、[BERT ドキュメント](bert) を参照してください。
## Resources
- [テキスト分類タスクガイド](../tasks/sequence_classification)
- [トークン分類タスクガイド](../tasks/token_classification)
- [質問回答タスク ガイド](../tasks/question_answering)
- [マスクされた言語モデリング タスク ガイド](../tasks/masked_lang_modeling)
- [多肢選択タスク ガイド](../tasks/multiple_choice)
## ConvBertConfig
[[autodoc]] ConvBertConfig
## ConvBertTokenizer
[[autodoc]] ConvBertTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## ConvBertTokenizerFast
[[autodoc]] ConvBertTokenizerFast
<frameworkcontent>
<pt>
## ConvBertModel
[[autodoc]] ConvBertModel
- forward
## ConvBertForMaskedLM
[[autodoc]] ConvBertForMaskedLM
- forward
## ConvBertForSequenceClassification
[[autodoc]] ConvBertForSequenceClassification
- forward
## ConvBertForMultipleChoice
[[autodoc]] ConvBertForMultipleChoice
- forward
## ConvBertForTokenClassification
[[autodoc]] ConvBertForTokenClassification
- forward
## ConvBertForQuestionAnswering
[[autodoc]] ConvBertForQuestionAnswering
- forward
</pt>
<tf>
## TFConvBertModel
[[autodoc]] TFConvBertModel
- call
## TFConvBertForMaskedLM
[[autodoc]] TFConvBertForMaskedLM
- call
## TFConvBertForSequenceClassification
[[autodoc]] TFConvBertForSequenceClassification
- call
## TFConvBertForMultipleChoice
[[autodoc]] TFConvBertForMultipleChoice
- call
## TFConvBertForTokenClassification
[[autodoc]] TFConvBertForTokenClassification
- call
## TFConvBertForQuestionAnswering
[[autodoc]] TFConvBertForQuestionAnswering
- call
</tf>
</frameworkcontent>
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{
"file_path": "transformers/docs/source/ja/model_doc/convbert.md",
"repo_id": "transformers",
"token_count": 2155
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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# DialoGPT
## Overview
DialoGPT は、[DialoGPT: Large-Scale Generative Pre-training for Conversational Response Generation](https://arxiv.org/abs/1911.00536) で Yizhe Zhang, Siqi Sun, Michel Galley, Yen-Chun Chen, Chris Brockett, Xiang Gao,
Jianfeng Gao, Jingjing Liu, Bill Dolan.これは、から抽出された 147M 万の会話のようなやりとりでトレーニングされた GPT2 モデルです。
レディット。
論文の要約は次のとおりです。
*私たちは、大規模で調整可能なニューラル会話応答生成モデル DialoGPT (対話生成事前トレーニング済み) を紹介します。
変成器）。 Reddit のコメント チェーンから抽出された 1 億 4,700 万件の会話のようなやり取りを対象にトレーニングされました。
2005 年から 2017 年にかけて、DialoGPT は人間に近いパフォーマンスを達成するために Hugging Face PyTorch トランスフォーマーを拡張しました。
シングルターンダイアログ設定における自動評価と人間による評価の両方。会話システムが
DialoGPT を活用すると、強力なベースラインよりも関連性が高く、内容が充実し、コンテキストに一貫性のある応答が生成されます。
システム。神経反応の研究を促進するために、事前トレーニングされたモデルとトレーニング パイプラインが公開されています。
よりインテリジェントなオープンドメイン対話システムの生成と開発。*
元のコードは [ここ](https://github.com/microsoft/DialoGPT) にあります。
## Usage tips
- DialoGPT は絶対位置埋め込みを備えたモデルであるため、通常は入力を右側にパディングすることをお勧めします。
左よりも。
- DialoGPT は、会話データの因果言語モデリング (CLM) 目標に基づいてトレーニングされているため、強力です
オープンドメイン対話システムにおける応答生成時。
- DialoGPT を使用すると、[DialoGPT's model card](https://huggingface.co/microsoft/DialoGPT-medium) に示されているように、ユーザーはわずか 10 行のコードでチャット ボットを作成できます。
トレーニング：
DialoGPT をトレーニングまたは微調整するには、因果言語モデリング トレーニングを使用できます。公式論文を引用すると： *私たちは
OpenAI GPT-2に従って、マルチターン対話セッションを長いテキストとしてモデル化し、生成タスクを言語としてフレーム化します
モデリング。まず、ダイアログ セッション内のすべてのダイアログ ターンを長いテキスト x_1,..., x_N に連結します (N は
* 詳細については、元の論文を参照してください。
<Tip>
DialoGPT のアーキテクチャは GPT2 モデルに基づいています。API リファレンスと例については、[GPT2 のドキュメント ページ](openai-community/gpt2) を参照してください。
</Tip>
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{
"file_path": "transformers/docs/source/ja/model_doc/dialogpt.md",
"repo_id": "transformers",
"token_count": 1576
}
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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# Efficient Training on Multiple GPUs
単一のGPUでのトレーニングが遅すぎる場合や、モデルの重みが単一のGPUのメモリに収まらない場合、複数のGPUを使用したセットアップが必要となります。単一のGPUから複数のGPUへの切り替えには、ワークロードを分散するためのある種の並列処理が必要です。データ、テンソル、またはパイプラインの並列処理など、さまざまな並列処理技術があります。ただし、すべてに適した一つの解決策は存在せず、最適な設定は使用するハードウェアに依存します。この記事は、おそらく他のフレームワークにも適用される主要な概念に焦点を当てつつ、PyTorchベースの実装に焦点を当てています。
<Tip>
**注意**: [単一GPUセクション](perf_train_gpu_one) で紹介された多くの戦略（混合精度トレーニングや勾配蓄積など）は一般的であり、モデルのトレーニングに一般的に適用されます。したがって、マルチGPUやCPUトレーニングなどの次のセクションに入る前に、それを確認してください。
</Tip>
まず、さまざまな1D並列処理技術とその利点および欠点について詳しく説明し、それらを2Dおよび3D並列処理に組み合わせてさらに高速なトレーニングを実現し、より大きなモデルをサポートする方法を検討します。さまざまな他の強力な代替手法も紹介されます。
## Concepts
以下は、この文書で後で詳しく説明される主要な概念の簡単な説明です。
1. **DataParallel (DP)** - 同じセットアップが複数回複製され、各セットアップにデータのスライスが供給されます。処理は並行して行われ、各セットアップはトレーニングステップの最後に同期されます。
2. **TensorParallel (TP)** - 各テンソルは複数のチャンクに分割され、単一のGPUにテンソル全体が存在するのではなく、テンソルの各シャードが指定されたGPUに存在します。処理中に、各シャードは別々に並行して処理され、異なるGPUで同期され、ステップの最後に結果が同期されます。これは水平並列処理と呼ばれるもので、分割は水平レベルで行われます。
3. **PipelineParallel (PP)** - モデルは垂直（レイヤーレベル）に複数のGPUに分割され、モデルの単一または複数のレイヤーが単一のGPUに配置されます。各GPUはパイプラインの異なるステージを並行して処理し、バッチの小さなチャンクで作業します。
4. **Zero Redundancy Optimizer (ZeRO)** - TPといくらか似たようなテンソルのシャーディングを実行しますが、前向きまたは後向きの計算のためにテンソル全体が再構築されるため、モデルを変更する必要はありません。また、GPUメモリが制限されている場合に補償するためのさまざまなオフロード技術をサポートします。
5. **Sharded DDP** - Sharded DDPは、さまざまなZeRO実装で使用される基本的なZeROコンセプトの別名です。
各コンセプトの詳細に深入りする前に、大規模なインフラストラクチャで大規模なモデルをトレーニングする際の大まかな決定プロセスを見てみましょう。
## Scalability Strategy
**⇨ シングルノード / マルチGPU**
* モデルが単一のGPUに収まる場合：
1. DDP - 分散データ並列
2. ZeRO - 状況と使用される構成に応じて速いかどうかが異なります
* モデルが単一のGPUに収まらない場合：
1. PP
2. ZeRO
3. TP
非常に高速なノード内接続（NVLINKまたはNVSwitchなど）があれば、これらの3つはほぼ同じ速度になるはずで、これらがない場合、PPはTPまたはZeROよりも速くなります。TPの程度も差を生じるかもしれません。特定のセットアップでの勝者を見つけるために実験することが最善です。
TPはほとんどの場合、単一ノード内で使用されます。つまり、TPサイズ <= ノードごとのGPU数です。
* 最大のレイヤーが単一のGPUに収まらない場合：
1. ZeROを使用しない場合 - TPを使用する必要があります。PP単独では収まらないでしょう。
2. ZeROを使用する場合 - "シングルGPU"のエントリと同じものを参照してください
**⇨ マルチノード / マルチGPU**
* ノード間の高速接続がある場合：
1. ZeRO - モデルへのほとんどの変更が不要です
2. PP+TP+DP - 通信が少なく、モデルへの大規模な変更が必要です
* ノード間の接続が遅く、GPUメモリがまだ不足している場合：
1. DP+PP+TP+ZeRO-1
## Data Parallelism
2つのGPUを持つほとんどのユーザーは、`DataParallel`（DP）と`DistributedDataParallel`（DDP）によって提供されるトレーニング速度の向上をすでに享受しています。これらはほぼ自明に使用できるPyTorchの組み込み機能です。一般的に、すべてのモデルで動作するDDPを使用することをお勧めします。DPは一部のモデルで失敗する可能性があるためです。[PyTorchのドキュメンテーション](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html)自体もDDPの使用を推奨しています。
### DP vs DDP
`DistributedDataParallel`（DDP）は通常、`DataParallel`（DP）よりも高速ですが、常にそうとは限りません：
* DPはPythonスレッドベースですが、DDPはマルチプロセスベースです。そのため、GIL（Global Interpreter Lock）などのPythonスレッドの制約がないためです。
* 一方、GPUカード間の遅い相互接続性は、DDPの場合に実際には遅い結果をもたらす可能性があります。
以下は、2つのモード間のGPU間通信の主な違いです：
[DDP](https://pytorch.org/docs/master/notes/ddp.html):
- 開始時、メインプロセスはモデルをGPU 0から他のGPUに複製します。
- それから各バッチごとに:
1. 各GPUは各自のミニバッチのデータを直接消費します。
2. `backward`中、ローカル勾配が準備できると、それらはすべてのプロセスで平均化されます。
[DP](https://pytorch.org/docs/master/generated/torch.nn.DataParallel.html):
各バッチごとに:
1. GPU 0はデータバッチを読み取り、それから各GPUにミニバッチを送信します。
2. GPU 0から各GPUに最新のモデルを複製します。
3. `forward`を実行し、各GPUからGPU 0に出力を送信し、損失を計算します。
4. GPU 0からすべてのGPUに損失を分散し、`backward`を実行します。
5. 各GPUからGPU 0に勾配を送信し、それらを平均化します。
DDPはバッチごとに行う通信は勾配の送信のみであり、一方、DPはバッチごとに5つの異なるデータ交換を行います。
DPはプロセス内でデータをPythonスレッドを介してコピーしますが、DDPは[torch.distributed](https://pytorch.org/docs/master/distributed.html)を介してデータをコピーします。
DPではGPU 0は他のGPUよりもはるかに多くの作業を行うため、GPUの未使用率が高くなります。
DDPは複数のマシン間で使用できますが、DPの場合はそうではありません。
DPとDDPの他にも違いがありますが、この議論には関係ありません。
これら2つのモードを深く理解したい場合、この[記事](https://www.telesens.co/2019/04/04/distributed-data-parallel-training-using-pytorch-on-aws/)を強くお勧めします。素晴らしいダイアグラムを含み、さまざまなハードウェアでの複数のベンチマークとプロファイラの出力を示し、知っておく必要があるすべての微妙なニュアンスを説明しています。
実際のベンチマークを見てみましょう：
| Type | NVlink | Time |
| :----- | ----- | ---: |
| 2:DP | Y | 110s |
| 2:DDP | Y | 101s |
| 2:DDP | N | 131s |
解析：
ここで、DPはNVlinkを使用したDDPに比べて約10％遅く、NVlinkを使用しないDDPに比べて約15％高速であることが示されています。
実際の違いは、各GPUが他のGPUと同期する必要があるデータの量に依存します。同期するデータが多いほど、遅いリンクが合計の実行時間を遅くする可能性が高くなります。
以下は完全なベンチマークコードと出力です：
`NCCL_P2P_DISABLE=1`を使用して、対応するベンチマークでNVLink機能を無効にしました。
```bash
# DP
rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \
python examples/pytorch/language-modeling/run_clm.py \
--model_name_or_path openai-community/gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \
--do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200
{'train_runtime': 110.5948, 'train_samples_per_second': 1.808, 'epoch': 0.69}
# DDP w/ NVlink
rm -r /tmp/test-clm; CUDA_VISIBLE_DEVICES=0,1 \
torchrun --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \
--model_name_or_path openai-community/gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \
--do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200
{'train_runtime': 101.9003, 'train_samples_per_second': 1.963, 'epoch': 0.69}
# DDP w/o NVlink
rm -r /tmp/test-clm; NCCL_P2P_DISABLE=1 CUDA_VISIBLE_DEVICES=0,1 \
torchrun --nproc_per_node 2 examples/pytorch/language-modeling/run_clm.py \
--model_name_or_path openai-community/gpt2 --dataset_name wikitext --dataset_config_name wikitext-2-raw-v1 \
--do_train --output_dir /tmp/test-clm --per_device_train_batch_size 4 --max_steps 200
{'train_runtime': 131.4367, 'train_samples_per_second': 1.522, 'epoch': 0.69}
```
ハードウェア: 2x TITAN RTX、各24GB + 2つのNVLink（`nvidia-smi topo -m`で `NV2`）
ソフトウェア: `pytorch-1.8-to-be` + `cuda-11.0` / `transformers==4.3.0.dev0`
## ZeRO Data Parallelism
ZeROパワードデータ並列処理（ZeRO-DP）は、次の[ブログ投稿](https://www.microsoft.com/en-us/research/blog/zero-deepspeed-new-system-optimizations-enable-training-models-with-over-100-billion-parameters/)のダイアグラムで説明されています。
これは理解が難しいかもしれませんが、実際にはこの概念は非常にシンプルです。これは通常の`DataParallel`（DP）ですが、完全なモデルパラメータ、勾配、およびオプティマイザの状態を複製する代わりに、各GPUはそれぞれのスライスのみを保存します。そして、実行時に、特定のレイヤーに必要な完全なレイヤーパラメータが必要な場合、すべてのGPUが同期して、お互いに不足している部分を提供します。それがすべてです。
3つのレイヤーからなる単純なモデルを考えてみましょう。各レイヤーには3つのパラメータがあります：
```
La | Lb | Lc
---|----|---
a0 | b0 | c0
a1 | b1 | c1
a2 | b2 | c2
```
レイヤーLaには、重みa0、a1、およびa2があります。
3つのGPUがある場合、Sharded DDP（= Zero-DP）はモデルを3つのGPUに次のように分割します：
```
GPU0:
La | Lb | Lc
---|----|---
a0 | b0 | c0
GPU1:
La | Lb | Lc
---|----|---
a1 | b1 | c1
GPU2:
La | Lb | Lc
---|----|---
a2 | b2 | c2
```
これは、典型的なディープニューラルネットワーク（DNN）のダイアグラムを想像すると、テンソル並列処理と同様の水平スライスであるようなものです。垂直スライスは、異なるGPUに完全な層グループを配置する方法です。しかし、これは単なる出発点に過ぎません。
これから、各GPUは通常のデータ並列処理（DP）と同様に、通常のミニバッチを受け取ります：
```
x0 => GPU0
x1 => GPU1
x2 => GPU2
```
最初に、入力データはレイヤーLaに適用されます。
GPU0に焦点を当てましょう：x0は、その前向きパスを実行するためにa0、a1、a2のパラメータが必要ですが、GPU0にはa0しかありません。GPU1からa1を、GPU2からa2を受け取り、モデルの各部分をまとめます。
同様に、GPU1はミニバッチx1を受け取り、a1しか持っていませんが、a0とa2のパラメータが必要です。これらはGPU0とGPU2から取得します。
GPU2もx2を受け取ります。a0とa1はGPU0とGPU1から受け取り、a2とともに完全なテンソルを再構築します。
3つのGPUは完全なテンソルを再構築し、前向き計算が行われます。
計算が完了すると、不要になったデータは削除されます。計算中だけ使用され、再構築は事前にフェッチを使用して効率的に行われます。
そして、このプロセス全体がレイヤーLb、次に前向きでLc、そして逆方向でLc -> Lb -> Laに対して繰り返されます。
私にとって、これは効率的なグループでの重みの分散戦略のように聞こえます：
1. 人Aはテントを持っています。
2. 人Bはストーブを持っています。
3. 人Cは斧を持っています。
今、彼らは毎晩持っているものを共有し、他の人から持っていないものをもらい、朝には割り当てられたタイプのギアを詰めて旅を続けます。これがSharded DDP / Zero DPです。
この戦略を、各人が独自のテント、ストーブ、斧を持って運ばなければならないシンプルな戦略と比較してみてください。これがPyTorchのDataParallel（DPおよびDDP）です。
このトピックの文献を読む際に、以下の類義語に出会うかもしれません：Sharded、Partitioned。
ZeROがモデルの重みを分割する方法に注意を払うと、これはテンソルパラレリズムと非常に似ているように見えます。これは後で議論される垂直モデルパラレリズムとは異なり、各レイヤーの重みをパーティション/シャーディングします。
Implementations:
- [DeepSpeed](https://www.deepspeed.ai/tutorials/zero/) ZeRO-DP stages 1+2+3
- [`transformers` integration](main_classes/trainer#trainer-integrations)
## Naive Model Parallelism (Vertical) and Pipeline Parallelism
ナイーブモデルパラレリズム（MP）は、モデルの層を複数のGPUに分散させる方法です。このメカニズムは比較的単純で、希望する層を`.to()`メソッドを使用して特定のデバイスに切り替えるだけです。これにより、データがこれらの層を通過するたびに、データも層と同じデバイスに切り替えられ、残りの部分は変更されません。
私たちはこれを「垂直MP」と呼びます。なぜなら、ほとんどのモデルがどのように描かれるかを思い出すと、層を垂直にスライスするからです。たとえば、以下の図は8層のモデルを示しています：
```
=================== ===================
| 0 | 1 | 2 | 3 | | 4 | 5 | 6 | 7 |
=================== ===================
gpu0 gpu1
```
我々は、モデルを垂直に2つに分割し、レイヤー0から3をGPU0に配置し、レイヤー4から7をGPU1に配置しました。
データがレイヤー0から1、1から2、2から3に移動する間は通常のモデルと同じです。しかし、データがレイヤー3からレイヤー4に移動する必要がある場合、GPU0からGPU1への移動が発生し、通信のオーバーヘッドが発生します。参加しているGPUが同じコンピュートノード（例：同じ物理マシン）にある場合、このコピーは非常に高速ですが、異なるコンピュートノード（例：複数のマシン）にある場合、通信のオーバーヘッドは大幅に増加する可能性があります。
その後、レイヤー4から5、6から7までは通常のモデルと同様に動作し、7番目のレイヤーが完了すると、データをしばしばレイヤー0に戻す必要があります（またはラベルを最後のレイヤーに送信します）。これで損失を計算し、オプティマイザが作業を開始できます。
問題点：
- 主な欠点、およびなぜこれを「単純な」MPと呼ぶのかは、1つを除いてすべてのGPUがどんな瞬間でもアイドル状態であることです。したがって、4つのGPUを使用する場合、単純なMPは、1つのGPUのメモリ容量を4倍にするのとほぼ同じであり、ハードウェアの残りを無視します。さらに、データのコピーのオーバーヘッドがあることを忘れてはいけません。したがって、4枚の6GBのカードは、データのコピーのオーバーヘッドがない1枚の24GBのカードと同じサイズを収容できるでしょうが、後者はトレーニングをより迅速に完了します。ただし、たとえば40GBのカードがあり、45GBのモデルを収める必要がある場合、勾配とオプティマイザの状態のためにほとんど収めることができません。
- 共有の埋め込みは、GPU間でコピーする必要があるかもしれません。
パイプライン並列処理（PP）は、ほぼ単純なMPと同じですが、GPUがアイドル状態になる問題を解決し、入力バッチをマイクロバッチに分割し、パイプラインを人工的に作成することにより、異なるGPUが計算プロセスに同時に参加できるようにします。
以下は、[GPipe論文](https://ai.googleblog.com/2019/03/introducing-gpipe-open-source-library.html)からの図で、上部には単純なMP、下部にはPPが示されています：
この図から、PPがGPUがアイドル状態の領域である「バブル」を少なく持つことがわかります。アイドル状態の部分は「バブル」と呼ばれます。
図の両方の部分は、4つのGPUがパイプラインに参加している4の次元の並列性を示しています。つまり、4つのパイプステージF0、F1、F2、F3のフォワードパスがあり、逆順のバックワードパスB3、B2、B1、B0があります。
PPは調整する新しいハイパーパラメータを導入します。それは `chunks` で、同じパイプステージを通じて連続して送信されるデータのチャンクの数を定義します。たとえば、下の図では `chunks=4` が表示されています。GPU0はチャンク0、1、2、3（F0,0、F0,1、F0,2、F0,3）で同じフォワードパスを実行し、他のGPUが作業を開始し始めるのを待ってから、GPU0はチャンク3、2、1、0（B0,3、B0,2、B0,1、B0,0）で逆順パスを実行します。
注意すべきは、概念的にはこれが勾配蓄積ステップ（GAS）と同じコンセプトであることです。PyTorchは `chunks` を使用し、DeepSpeedは同じハイパーパラメータをGASと呼びます。
`chunks` の導入により、PPはマイクロバッチ（MBS）の概念を導入します。DPはグローバルデータバッチサイズをミニバッチに分割します。したがって、DPの次数が4で、グローバルバッチサイズが1024の場合、4つのミニバッチ（それぞれ256）に分割されます（1024/4）。そして、`chunks`（またはGAS）の数が32である場合、マイクロバッチサイズは8になります（256/32）。各パイプラインステージは1つのマイクロバッチで作業します。
DP + PPセットアップのグローバルバッチサイズを計算するには、`mbs*chunks*dp_degree`（`8*32*4=1024`）を行います。
図に戻りましょう。
`chunks=1` であれば、非効率な単純なMPになります。非常に大きな `chunks` 値を使用すると、非常に小さなマイクロバッチサイズになり、効率があまり高くないかもしれません。したがって、GPUの効率的な利用を最大化する値を見つけるために実験する必要があります。これは、バブルのサイズを最小限にすることに対応する、すべての参加GPUにわたる高い並行GPU利用を可能にするためです。
2つのソリューショングループがあります。従来のパイプラインAPIソリューションと、ユーザーのモデルを大幅に変更する必要があるより現代的なソリューションです。
従来のパイプラインAPIソリューション：
- PyTorch
- DeepSpeed
- Megatron-LM
現代的なソリューション：
- Varuna
- Sagemaker
従来のパイプラインAPIソリューションの問題点：
- モデルをかなり変更する必要があるため、Pipelineはモジュールの通常のフローを`nn.Sequential`シーケンスに再書き込む必要があり、モデルの設計を変更することが必要です。
- 現在、Pipeline APIは非常に制限的です。最初のパイプラインステージに渡されるPython変数のセットがある場合、回避策を見つける必要があります。現在、パイプラインインターフェースでは、唯一のテンソルまたはテンソルのタプルを入力と出力として要求しています。これらのテンソルはバッチサイズを最初の次元として持っている必要があります。パイプラインはミニバッチをマイクロバッチに分割します。可能な改善点については、こちらの議論が行われています：https://github.com/pytorch/pytorch/pull/50693
- パイプステージのレベルでの条件付き制御フローは不可能です。例えば、T5のようなエンコーダーデコーダーモデルは、条件付きエンコーダーステージを処理するために特別な回避策が必要です。
- 各レイヤーを配置する必要があるため、1つのモデルの出力が他のモデルの入力になるようにします。
VarunaとSageMakerとの実験はまだ行っていませんが、彼らの論文によれば、上記で述べた問題のリストを克服し、ユーザーのモデルにははるかに小さな変更しか必要としないと報告されています。
実装：
- [Pytorch](https://pytorch.org/docs/stable/pipeline.html) (initial support in pytorch-1.8, and progressively getting improved in 1.9 and more so in 1.10). Some [examples](https://github.com/pytorch/pytorch/blob/master/benchmarks/distributed/pipeline/pipe.py)
- [DeepSpeed](https://www.deepspeed.ai/tutorials/pipeline/)
- [Megatron-LM](https://github.com/NVIDIA/Megatron-LM) has an internal implementation - no API.
- [Varuna](https://github.com/microsoft/varuna)
- [SageMaker](https://arxiv.org/abs/2111.05972) - this is a proprietary solution that can only be used on AWS.
- [OSLO](https://github.com/tunib-ai/oslo) - この実装は、Hugging Face Transformersに基づいています。
🤗 Transformersのステータス: この執筆時点では、いずれのモデルも完全なPP（パイプライン並列処理）をサポートしていません。GPT2モデルとT5モデルは単純なMP（モデル並列処理）サポートを持っています。主な障害は、モデルを`nn.Sequential`に変換できず、すべての入力がテンソルである必要があることです。現在のモデルには、変換を非常に複雑にする多くの機能が含まれており、これらを削除する必要があります。
他のアプローチ：
DeepSpeed、Varuna、およびSageMakerは、[交互にパイプラインを実行](https://docs.aws.amazon.com/sagemaker/latest/dg/model-parallel-core-features.html)するコンセプトを使用しています。ここでは、バックワードパスを優先させてバブル（アイドル時間）をさらに最小限に抑えます。
Varunaは、最適なスケジュールを発見するためにシミュレーションを使用してスケジュールをさらに改善しようとします。
OSLOは、`nn.Sequential`の変換なしでTransformersに基づくパイプライン並列処理を実装しています。
## Tensor Parallelism
テンソル並列処理では、各GPUがテンソルのスライスのみを処理し、全体が必要な操作のためにのみ完全なテンソルを集約します。
このセクションでは、[Megatron-LM](https://github.com/NVIDIA/Megatron-LM)論文からのコンセプトと図を使用します：[GPUクラスタでの効率的な大規模言語モデルトレーニング](https://arxiv.org/abs/2104.04473)。
どのトランスフォーマの主要な構築要素は、完全に接続された`nn.Linear`に続く非線形アクティベーション`GeLU`です。
Megatronの論文の表記法に従って、行列の乗算部分を`Y = GeLU(XA)`と書くことができます。ここで、`X`と`Y`は入力ベクトルと出力ベクトルで、`A`は重み行列です。
行列の計算を行列形式で見ると、行列乗算を複数のGPUで分割できる方法が簡単に理解できます：
重み行列`A`を`N`個のGPUに対して列ごとに分割し、並列で行列乗算`XA_1`から`XA_n`を実行すると、`N`個の出力ベクトル`Y_1、Y_2、...、Y_n`が得られ、それらを独立して`GeLU`に供給できます：
この原理を使用して、最後まで同期が必要ないまま、任意の深さのMLPを更新できます。Megatron-LMの著者はそのための有用なイラストを提供しています：
マルチヘッドアテンションレイヤーを並列化することはさらに簡単です。それらは既に複数の独立したヘッドを持っているため、本質的に並列です！
特別な考慮事項：TPには非常に高速なネットワークが必要であり、したがって1つのノードを超えてTPを実行しないことがお勧めされません。実際には、1つのノードに4つのGPUがある場合、最大のTP度数は4です。TP度数8が必要な場合は、少なくとも8つのGPUを持つノードを使用する必要があります。
このセクションは、元のより詳細な[TPの概要](https://github.com/huggingface/transformers/issues/10321#issuecomment-783543530)に基づいています。
by [@anton-l](https://github.com/anton-l)。
SageMakerは、より効率的な処理のためにTPとDPを組み合わせて使用します。
代替名：
- [DeepSpeed](https://github.com/microsoft/DeepSpeed)はこれを「テンソルスライシング」と呼びます。詳細は[DeepSpeedの特徴](https://www.deepspeed.ai/training/#model-parallelism)をご覧ください。
実装例:
- [Megatron-LM](https://github.com/NVIDIA/Megatron-LM)には、モデル固有の内部実装があります。
- [parallelformers](https://github.com/tunib-ai/parallelformers)（現時点では推論のみ）。
- [SageMaker](https://arxiv.org/abs/2111.05972) - これはAWSでのみ使用できるプロプライエタリなソリューションです。
- [OSLO](https://github.com/tunib-ai/oslo)には、Transformersに基づいたテンソル並列実装があります。
🤗 Transformersの状況:
- コア: まだコアには実装されていません。
- ただし、推論が必要な場合、[parallelformers](https://github.com/tunib-ai/parallelformers)はほとんどのモデルに対してサポートを提供します。これがコアに実装されるまで、これを使用できます。そして、トレーニングモードもサポートされることを期待しています。
- Deepspeed-Inferenceでは、BERT、GPT-2、およびGPT-NeoモデルをCUDAカーネルベースの高速推論モードでサポートしています。詳細は[こちら](https://www.deepspeed.ai/tutorials/inference-tutorial/)をご覧ください。
## DP+PP
DeepSpeedの[パイプラインチュートリアル](https://www.deepspeed.ai/tutorials/pipeline/)からの次の図は、DPをPPと組み合わせる方法を示しています。
ここで重要なのは、DPランク0がGPU2を見えなくし、DPランク1がGPU3を見えなくすることです。DPにとって、存在するのはGPU 0 と 1 のみで、それらの2つのGPUのようにデータを供給します。GPU0はPPを使用してGPU2に一部の負荷を「秘密裏に」オフロードし、GPU1も同様にGPU3を支援に引き入れます。
各次元には少なくとも2つのGPUが必要ですので、ここでは少なくとも4つのGPUが必要です。
実装例:
- [DeepSpeed](https://github.com/microsoft/DeepSpeed)
- [Megatron-LM](https://github.com/NVIDIA/Megatron-LM)
- [Varuna](https://github.com/microsoft/varuna)
- [SageMaker](https://arxiv.org/abs/2111.05972)
- [OSLO](https://github.com/tunib-ai/oslo)
🤗 Transformersの状況: まだ実装されていません
## DP+PP+TP
さらに効率的なトレーニングを行うために、3Dパラレリズムを使用し、PPをTPとDPと組み合わせます。これは次の図で示されています。
この図は[3Dパラレリズム：兆パラメータモデルへのスケーリング](https://www.microsoft.com/en-us/research/blog/deepspeed-extreme-scale-model-training-for-everyone/)というブログ投稿から取得されたもので、おすすめの読み物です。
各次元には少なくとも2つのGPUが必要ですので、ここでは少なくとも8つのGPUが必要です。
実装例:
- [DeepSpeed](https://github.com/microsoft/DeepSpeed) - DeepSpeedには、さらに効率的なDPであるZeRO-DPと呼ばれるものも含まれています。
- [Megatron-LM](https://github.com/NVIDIA/Megatron-LM)
- [Varuna](https://github.com/microsoft/varuna)
- [SageMaker](https://arxiv.org/abs/2111.05972)
- [OSLO](https://github.com/tunib-ai/oslo)
🤗 Transformersの状況: まだ実装されていません。PPとTPがないため。
## ZeRO DP+PP+TP
DeepSpeedの主要な機能の1つはZeROで、これはDPの拡張機能です。これについてはすでに「ZeROデータ並列化」で説明されています。通常、これは単独で動作する機能で、PPやTPは必要ありません。しかし、PPとTPと組み合わせることもできます。
ZeRO-DPがPPと組み合わされる場合、通常はZeROステージ1（オプティマイザーシャーディング）のみが有効になります。
ZeROステージ2（勾配シャーディング）をパイプライン並列化と組み合わせて使用する理論的な可能性はありますが、性能に悪影響を及ぼします。各マイクロバッチごとに勾配をシャーディングする前に、勾配を集約するための追加のリダクションスキャッター集計が必要で、通信オーバーヘッドが発生する可能性があります。パイプライン並列化の性質上、小さなマイクロバッチが使用され、計算の集中度（マイクロバッチサイズ）をバランスにかけ、パイプラインバブル（マイクロバッチ数）を最小限に抑えることに焦点が当てられています。したがって、これらの通信コストは影響を及ぼすでしょう。
さらに、PPには通常よりも少ない層が含まれており、メモリの節約はそれほど大きくありません。PPは既に勾配サイズを「1/PP」に削減するため、勾配シャーディングの節約は純粋なDPよりもはるかに重要ではありません。
ZeROステージ3も同様の理由で適していません - より多くのノード間通信が必要です。
そして、ZeROを持っているので、もう一つの利点はZeRO-Offloadです。これはステージ1オプティマイザーステートをCPUにオフロードできます。
実装例:
- [Megatron-DeepSpeed](https://github.com/microsoft/Megatron-DeepSpeed)と[BigScienceからのMegatron-Deepspeed](https://github.com/bigscience-workshop/Megatron-DeepSpeed)は、前者のリポジトリのフォークです。
- [OSLO](https://github.com/tunib-ai/oslo)
重要な論文:
- [DeepSpeedとMegatronを使用したMegatron-Turing NLG 530Bのトレーニング](https://arxiv.org/abs/2201.11990)
🤗 Transformersの状況: まだ実装されていません。PPとTPがないため。
## FlexFlow
[FlexFlow](https://github.com/flexflow/FlexFlow)は、わずかに異なるアプローチで並列化の問題を解決します。
論文: [Zhihao Jia、Matei Zaharia、Alex Aikenによる "Deep Neural Networksのデータとモデルの並列化を超えて"](https://arxiv.org/abs/1807.05358)
FlexFlowは、サンプル-オペレータ-属性-パラメータの4D並列化を行います。
1. サンプル = データ並列化（サンプル単位の並列化）
2. オペレータ = 単一の操作をいくつかのサブ操作に並列化
3. 属性 = データ並列化（長さ方向の並列化）
4. パラメータ = モデル並列化（次元に関係なく、水平または垂直）
例:
* サンプル
シーケンス長512の10バッチを考えてみましょう。これらをサンプル次元で2つのデバイスに並列化すると、10 x 512が5 x 2 x 512になります。
* オペレータ
層正規化を行う場合、まずstdを計算し、次にmeanを計算し、データを正規化できます。オペレータの並列化により、stdとmeanを並列に計算できます。したがって、オペレータ次元で2つのデバイス（cuda:0、cuda:1）に並列化すると、最初に入力データを両方のデバイスにコピーし、cuda:0でstdを計算し、cuda:1でmeanを同時に計算します。
* 属性
10バッチの512長があります。これらを属性次元で2つのデバイスに並列化すると、10 x 512が10 x 2 x 256になります。
* パラメータ
これはテンソルモデルの並列化または単純な層ごとのモデルの並列化と似ています。
このフレームワークの重要性は、（1）GPU/TPU/CPU対（2）RAM/DRAM対（3）高速内部接続/低速外部接続などのリソースを取り、これらすべてをアルゴリズムによって自動的に最適化することです。どの並列化をどこで使用するかをアルゴリズム的に決定します。
非常に重要な側面の1つは、FlexFlowは静的で固定のワークロードを持つモデルのために設計されており、動的な動作を持つモデルはイテレーションごとに異なる並列化戦略を好む場合があることです。
したがって、このフレームワークの約束は非常に魅力的です。選択したクラスタで30分間のシミュレーションを実行し、この特定の環境を最適に利用するための最良の戦略を提供します。部分を追加/削除/置換すると、それに対して実行して再最適化プランを作成します。その後、トレーニングできます。異なるセットアップには独自の最適化があります。
🤗 Transformersの現在の状況: まだ統合されていません。すでに[transformers.utils.fx](https://github.com/huggingface/transformers/blob/master/src/transformers/utils/fx.py)を使用してモデルがFXトレース可能であるため、FlexFlowを動作させるために必要な手順を誰かが見つける必要があります。
## Which Strategy To Use When
ここでは、どの並列化戦略をいつ使用するかの非常におおまかなアウトラインを示します。各リストの最初が通常よりも速いことが一般的です。
**⇨ 単一GPU**
* モデルが単一GPUに収まる場合：
1. 通常の使用
* モデルが単一GPUに収まらない場合：
1. ZeRO + CPUをオフロードし、オプションでNVMeをオフロード
2. 上記に加えて、最大のレイヤーが単一GPUに収まらない場合、[Memory Centric Tiling](https://deepspeed.readthedocs.io/en/latest/zero3.html#memory-centric-tiling)（詳細は以下参照）を有効化
* 最大のレイヤーが単一GPUに収まらない場合：
1. ZeROを使用しない場合 - TPを有効化する必要があります。なぜなら、PPだけでは収めることができないからです。
2. ZeROを使用する場合は、上記の「単一GPU」のエントリと同じものを参照してください
**⇨ 単一ノード/マルチGPU**
* モデルが単一GPUに収まる場合：
1. DDP - 分散データ並列
2. ZeRO - 状況と使用される構成に依存して速いかどうかが異なることがあります
* モデルが単一GPUに収まらない場合：
1. PP
2. ZeRO
3. TP
非常に高速なノード内接続がNVLINKまたはNVSwitchである場合、これらのすべてはほとんど同等の性能です。これらがない場合、PPはTPまたはZeROよりも速くなります。TPの度合いも違いを生じるかもしれません。特定のセットアップで勝者を見つけるために実験するのが最善です。
TPはほとんど常に単一ノード内で使用されます。つまり、TPサイズ <= ノードあたりのGPUです。
* 最大のレイヤーが単一GPUに収まらない場合：
1. ZeROを使用しない場合 - TPを使用する必要があります。なぜなら、PPだけでは収めることができないからです。
2. ZeROを使用する場合は、上記の「単一GPU」のエントリと同じものを参照してください
**⇨ マルチノード/マルチGPU**
* 高速なノード間接続がある場合：
1. ZeRO - モデルへのほとんどの変更が不要です
2. PP+TP+DP - 通信が少なく、モデルに大規模な変更が必要です
* 遅いノード間接続があり、GPUメモリが少ない場合：
1. DP+PP+TP+ZeRO-1
|
transformers/docs/source/ja/perf_train_gpu_many.md/0
|
{
"file_path": "transformers/docs/source/ja/perf_train_gpu_many.md",
"repo_id": "transformers",
"token_count": 18222
}
| 294
|
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# Automatic speech recognition
[[open-in-colab]]
<Youtube id="TksaY_FDgnk"/>
自動音声認識 (ASR) は音声信号をテキストに変換し、一連の音声入力をテキスト出力にマッピングします。 Siri や Alexa などの仮想アシスタントは ASR モデルを使用してユーザーを日常的に支援しており、ライブキャプションや会議中のメモ取りなど、他にも便利なユーザー向けアプリケーションが数多くあります。
このガイドでは、次の方法を説明します。
1. [MInDS-14](https://huggingface.co/datasets/PolyAI/minds14) データセットの [Wav2Vec2](https://huggingface.co/facebook/wav2vec2-base) を微調整して、音声をテキストに書き起こします。
2. 微調整したモデルを推論に使用します。
<Tip>
このタスクと互換性のあるすべてのアーキテクチャとチェックポイントを確認するには、[タスクページ](https://huggingface.co/tasks/automatic-speech-recognition) を確認することをお勧めします。
</Tip>
始める前に、必要なライブラリがすべてインストールされていることを確認してください。
```bash
pip install transformers datasets evaluate jiwer
```
モデルをアップロードしてコミュニティと共有できるように、Hugging Face アカウントにログインすることをお勧めします。プロンプトが表示されたら、トークンを入力してログインします。
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## Load MInDS-14 dataset
まず、🤗 データセット ライブラリから [MInDS-14](https://huggingface.co/datasets/PolyAI/minds14) データセットの小さいサブセットをロードします。これにより、完全なデータセットのトレーニングにさらに時間を費やす前に、実験してすべてが機能することを確認する機会が得られます。
```py
>>> from datasets import load_dataset, Audio
>>> minds = load_dataset("PolyAI/minds14", name="en-US", split="train[:100]")
```
[`~Dataset.train_test_split`] メソッドを使用して、データセットの `train` 分割をトレイン セットとテスト セットに分割します。
```py
>>> minds = minds.train_test_split(test_size=0.2)
```
次に、データセットを見てみましょう。
```py
>>> minds
DatasetDict({
train: Dataset({
features: ['path', 'audio', 'transcription', 'english_transcription', 'intent_class', 'lang_id'],
num_rows: 16
})
test: Dataset({
features: ['path', 'audio', 'transcription', 'english_transcription', 'intent_class', 'lang_id'],
num_rows: 4
})
})
```
データセットには`lang_id`や`english_transcription`などの多くの有用な情報が含まれていますが、このガイドでは「`audio`」と「`transciption`」に焦点を当てます。 [`~datasets.Dataset.remove_columns`] メソッドを使用して他の列を削除します。
```py
>>> minds = minds.remove_columns(["english_transcription", "intent_class", "lang_id"])
```
もう一度例を見てみましょう。
```py
>>> minds["train"][0]
{'audio': {'array': array([-0.00024414, 0. , 0. , ..., 0.00024414,
0.00024414, 0.00024414], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602ba9e2963e11ccd901cd4f.wav',
'sampling_rate': 8000},
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602ba9e2963e11ccd901cd4f.wav',
'transcription': "hi I'm trying to use the banking app on my phone and currently my checking and savings account balance is not refreshing"}
```
次の 2 つのフィールドがあります。
- `audio`: 音声ファイルをロードしてリサンプリングするために呼び出す必要がある音声信号の 1 次元の `array`。
- `transcription`: ターゲットテキスト。
## Preprocess
次のステップでは、Wav2Vec2 プロセッサをロードしてオーディオ信号を処理します。
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("facebook/wav2vec2-base")
```
MInDS-14 データセットのサンプリング レートは 8000kHz です (この情報は [データセット カード](https://huggingface.co/datasets/PolyAI/minds14) で確認できます)。つまり、データセットを再サンプリングする必要があります。事前トレーニングされた Wav2Vec2 モデルを使用するには、16000kHz に設定します。
```py
>>> minds = minds.cast_column("audio", Audio(sampling_rate=16_000))
>>> minds["train"][0]
{'audio': {'array': array([-2.38064706e-04, -1.58618059e-04, -5.43987835e-06, ...,
2.78103951e-04, 2.38446111e-04, 1.18740834e-04], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602ba9e2963e11ccd901cd4f.wav',
'sampling_rate': 16000},
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602ba9e2963e11ccd901cd4f.wav',
'transcription': "hi I'm trying to use the banking app on my phone and currently my checking and savings account balance is not refreshing"}
```
上の `transcription` でわかるように、テキストには大文字と小文字が混在しています。 Wav2Vec2 トークナイザーは大文字のみでトレーニングされるため、テキストがトークナイザーの語彙と一致することを確認する必要があります。
```py
>>> def uppercase(example):
... return {"transcription": example["transcription"].upper()}
>>> minds = minds.map(uppercase)
```
次に、次の前処理関数を作成します。
1. `audio`列を呼び出して、オーディオ ファイルをロードしてリサンプリングします。
2. オーディオ ファイルから `input_values` を抽出し、プロセッサを使用して `transcription` 列をトークン化します。
```py
>>> def prepare_dataset(batch):
... audio = batch["audio"]
... batch = processor(audio["array"], sampling_rate=audio["sampling_rate"], text=batch["transcription"])
... batch["input_length"] = len(batch["input_values"][0])
... return batch
```
データセット全体に前処理関数を適用するには、🤗 Datasets [`~datasets.Dataset.map`] 関数を使用します。 `num_proc` パラメータを使用してプロセスの数を増やすことで、`map` を高速化できます。 [`~datasets.Dataset.remove_columns`] メソッドを使用して、不要な列を削除します。
```py
>>> encoded_minds = minds.map(prepare_dataset, remove_columns=minds.column_names["train"], num_proc=4)
```
🤗 Transformers には ASR 用のデータ照合器がないため、[`DataCollatorWithPadding`] を調整してサンプルのバッチを作成する必要があります。また、テキストとラベルが (データセット全体ではなく) バッチ内の最も長い要素の長さに合わせて動的に埋め込まれ、均一な長さになります。 `padding=True` を設定すると、`tokenizer` 関数でテキストを埋め込むことができますが、動的な埋め込みの方が効率的です。
他のデータ照合器とは異なり、この特定のデータ照合器は、`input_values`と `labels`」に異なるパディング方法を適用する必要があります。
```py
>>> import torch
>>> from dataclasses import dataclass, field
>>> from typing import Any, Dict, List, Optional, Union
>>> @dataclass
... class DataCollatorCTCWithPadding:
... processor: AutoProcessor
... padding: Union[bool, str] = "longest"
... def __call__(self, features: List[Dict[str, Union[List[int], torch.Tensor]]]) -> Dict[str, torch.Tensor]:
... # split inputs and labels since they have to be of different lengths and need
... # different padding methods
... input_features = [{"input_values": feature["input_values"][0]} for feature in features]
... label_features = [{"input_ids": feature["labels"]} for feature in features]
... batch = self.processor.pad(input_features, padding=self.padding, return_tensors="pt")
... labels_batch = self.processor.pad(labels=label_features, padding=self.padding, return_tensors="pt")
... # replace padding with -100 to ignore loss correctly
... labels = labels_batch["input_ids"].masked_fill(labels_batch.attention_mask.ne(1), -100)
... batch["labels"] = labels
... return batch
```
次に、`DataCollatorForCTCWithPadding` をインスタンス化します。
```py
>>> data_collator = DataCollatorCTCWithPadding(processor=processor, padding="longest")
```
## Evaluate
トレーニング中にメトリクスを含めると、多くの場合、モデルのパフォーマンスを評価するのに役立ちます。 🤗 [Evaluate](https://huggingface.co/docs/evaluate/index) ライブラリを使用して、評価メソッドをすばやくロードできます。このタスクでは、[単語エラー率](https://huggingface.co/spaces/evaluate-metric/wer) (WER) メトリクスを読み込みます (🤗 Evaluate [クイック ツアー](https://huggingface.co/docs/evaluate/a_quick_tour) を参照して、メトリクスをロードして計算する方法の詳細を確認してください)。
```py
>>> import evaluate
>>> wer = evaluate.load("wer")
```
次に、予測とラベルを [`~evaluate.EvaluationModule.compute`] に渡して WER を計算する関数を作成します。
```py
>>> import numpy as np
>>> def compute_metrics(pred):
... pred_logits = pred.predictions
... pred_ids = np.argmax(pred_logits, axis=-1)
... pred.label_ids[pred.label_ids == -100] = processor.tokenizer.pad_token_id
... pred_str = processor.batch_decode(pred_ids)
... label_str = processor.batch_decode(pred.label_ids, group_tokens=False)
... wer = wer.compute(predictions=pred_str, references=label_str)
... return {"wer": wer}
```
これで`compute_metrics`関数の準備が整いました。トレーニングをセットアップするときにこの関数に戻ります。
## Train
<frameworkcontent>
<pt>
<Tip>
[`Trainer`] を使用したモデルの微調整に慣れていない場合は、[ここ](../training#train-with-pytorch-trainer) の基本的なチュートリアルをご覧ください。
</Tip>
これでモデルのトレーニングを開始する準備が整いました。 [`AutoModelForCTC`] で Wav2Vec2 をロードします。 `ctc_loss_reduction` パラメータで適用する削減を指定します。多くの場合、デフォルトの合計ではなく平均を使用する方が適切です。
```py
>>> from transformers import AutoModelForCTC, TrainingArguments, Trainer
>>> model = AutoModelForCTC.from_pretrained(
... "facebook/wav2vec2-base",
... ctc_loss_reduction="mean",
... pad_token_id=processor.tokenizer.pad_token_id,
... )
```
この時点で残っている手順は次の 3 つだけです。
1. [`TrainingArguments`] でトレーニング ハイパーパラメータを定義します。唯一の必須パラメータは、モデルの保存場所を指定する `output_dir` です。 `push_to_hub=True`を設定して、このモデルをハブにプッシュします (モデルをアップロードするには、Hugging Face にサインインする必要があります)。各エポックの終了時に、[`トレーナー`] は WER を評価し、トレーニング チェックポイントを保存します。
2. トレーニング引数を、モデル、データセット、トークナイザー、データ照合器、および `compute_metrics` 関数とともに [`Trainer`] に渡します。
3. [`~Trainer.train`] を呼び出してモデルを微調整します。
```py
>>> training_args = TrainingArguments(
... output_dir="my_awesome_asr_mind_model",
... per_device_train_batch_size=8,
... gradient_accumulation_steps=2,
... learning_rate=1e-5,
... warmup_steps=500,
... max_steps=2000,
... gradient_checkpointing=True,
... fp16=True,
... group_by_length=True,
... eval_strategy="steps",
... per_device_eval_batch_size=8,
... save_steps=1000,
... eval_steps=1000,
... logging_steps=25,
... load_best_model_at_end=True,
... metric_for_best_model="wer",
... greater_is_better=False,
... push_to_hub=True,
... )
>>> trainer = Trainer(
... model=model,
... args=training_args,
... train_dataset=encoded_minds["train"],
... eval_dataset=encoded_minds["test"],
... tokenizer=processor,
... data_collator=data_collator,
... compute_metrics=compute_metrics,
... )
>>> trainer.train()
```
トレーニングが完了したら、 [`~transformers.Trainer.push_to_hub`] メソッドを使用してモデルをハブに共有し、誰もがモデルを使用できるようにします。
```py
>>> trainer.push_to_hub()
```
</pt>
</frameworkcontent>
<Tip>
自動音声認識用にモデルを微調整する方法のより詳細な例については、英語 ASR および英語のこのブログ [投稿](https://huggingface.co/blog/fine-tune-wav2vec2-english) を参照してください。多言語 ASR については、この [投稿](https://huggingface.co/blog/fine-tune-xlsr-wav2vec2) を参照してください。
</Tip>
## Inference
モデルを微調整したので、それを推論に使用できるようになりました。
推論を実行したい音声ファイルをロードします。必要に応じて、オーディオ ファイルのサンプリング レートをモデルのサンプリング レートと一致するようにリサンプリングすることを忘れないでください。
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("PolyAI/minds14", "en-US", split="train")
>>> dataset = dataset.cast_column("audio", Audio(sampling_rate=16000))
>>> sampling_rate = dataset.features["audio"].sampling_rate
>>> audio_file = dataset[0]["audio"]["path"]
```
推論用に微調整されたモデルを試す最も簡単な方法は、それを [`pipeline`] で使用することです。モデルを使用して自動音声認識用の`pipeline`をインスタンス化し、オーディオ ファイルをそれに渡します。
```py
>>> from transformers import pipeline
>>> transcriber = pipeline("automatic-speech-recognition", model="stevhliu/my_awesome_asr_minds_model")
>>> transcriber(audio_file)
{'text': 'I WOUD LIKE O SET UP JOINT ACOUNT WTH Y PARTNER'}
```
<Tip>
転写はまあまあですが、もっと良くなる可能性があります。さらに良い結果を得るには、より多くの例でモデルを微調整してみてください。
</Tip>
必要に応じて、「パイプライン」の結果を手動で複製することもできます。
<frameworkcontent>
<pt>
プロセッサをロードしてオーディオ ファイルと文字起こしを前処理し、`input`を PyTorch テンソルとして返します。
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("stevhliu/my_awesome_asr_mind_model")
>>> inputs = processor(dataset[0]["audio"]["array"], sampling_rate=sampling_rate, return_tensors="pt")
```
Pass your inputs to the model and return the logits:
```py
>>> from transformers import AutoModelForCTC
>>> model = AutoModelForCTC.from_pretrained("stevhliu/my_awesome_asr_mind_model")
>>> with torch.no_grad():
... logits = model(**inputs).logits
```
最も高い確率で予測された `input_ids` を取得し、プロセッサを使用して予測された `input_ids` をデコードしてテキストに戻します。
```py
>>> import torch
>>> predicted_ids = torch.argmax(logits, dim=-1)
>>> transcription = processor.batch_decode(predicted_ids)
>>> transcription
['I WOUL LIKE O SET UP JOINT ACOUNT WTH Y PARTNER']
```
</pt>
</frameworkcontent>
|
transformers/docs/source/ja/tasks/asr.md/0
|
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"repo_id": "transformers",
"token_count": 7051
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| 295
|
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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# Transformers Agents
<Tip warning={true}>
Transformers Agentsは、いつでも変更される可能性のある実験的なAPIです。エージェントが返す結果は、APIまたは基礎となるモデルが変更される可能性があるため、異なることがあります。
</Tip>
Transformersバージョンv4.29.0は、*ツール*と*エージェント*のコンセプトを基に構築されています。この[colab](https://colab.research.google.com/drive/1c7MHD-T1forUPGcC_jlwsIptOzpG3hSj)で試すことができます。
要するに、これはtransformersの上に自然言語APIを提供するものです：私たちは一連の厳選されたツールを定義し、自然言語を解釈し、これらのツールを使用するエージェントを設計します。これは設計上拡張可能です。私たちはいくつかの関連するツールを厳選しましたが、コミュニティによって開発された任意のツールを使用するためにシステムを簡単に拡張できる方法も示します。
この新しいAPIで何ができるかのいくつかの例から始めましょう。特に多モーダルなタスクに関して強力ですので、画像を生成したりテキストを読み上げたりするのに最適です。
上記のテキストの上に、日本語の翻訳を提供します。
```py
agent.run("Caption the following image", image=image)
```
| **Input** | **Output** |
|-----------------------------------------------------------------------------------------------------------------------------|-----------------------------------|
| <img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/beaver.png" width=200> | A beaver is swimming in the water |
---
```py
agent.run("Read the following text out loud", text=text)
```
| **Input** | **Output** |
|-------------------------------------------------------------------------------------------------------------------------|----------------------------------------------|
| A beaver is swimming in the water | <audio controls><source src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/tts_example.wav" type="audio/wav"> your browser does not support the audio element. </audio>
---
```py
agent.run(
"In the following `document`, where will the TRRF Scientific Advisory Council Meeting take place?",
document=document,
)
```
| **Input** | **Output** |
|-----------------------------------------------------------------------------------------------------------------------------|----------------|
| <img src="https://datasets-server.huggingface.co/assets/hf-internal-testing/example-documents/--/hf-internal-testing--example-documents/test/0/image/image.jpg" width=200> | ballroom foyer |
## Quickstart
`agent.run`を使用する前に、エージェントをインスタンス化する必要があります。エージェントは、大規模な言語モデル（LLM）です。
OpenAIモデルとBigCode、OpenAssistantからのオープンソースの代替モデルをサポートしています。OpenAIモデルはパフォーマンスが優れていますが、OpenAIのAPIキーが必要であり、無料で使用することはできません。一方、Hugging FaceはBigCodeとOpenAssistantモデルのエンドポイントへの無料アクセスを提供しています。
まず、デフォルトの依存関係をすべてインストールするために`agents`のエクストラをインストールしてください。
```bash
pip install transformers[agents]
```
OpenAIモデルを使用するには、`openai`の依存関係をインストールした後、`OpenAiAgent`をインスタンス化します。
```bash
pip install openai
```
```py
from transformers import OpenAiAgent
agent = OpenAiAgent(model="text-davinci-003", api_key="<your_api_key>")
```
BigCodeまたはOpenAssistantを使用するには、まずログインしてInference APIにアクセスしてください。
```py
from huggingface_hub import login
login("<YOUR_TOKEN>")
```
次に、エージェントをインスタンス化してください。
```py
from transformers import HfAgent
# Starcoder
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder")
# StarcoderBase
# agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoderbase")
# OpenAssistant
# agent = HfAgent(url_endpoint="https://api-inference.huggingface.co/models/OpenAssistant/oasst-sft-4-pythia-12b-epoch-3.5")
```
これは、Hugging Faceが現在無料で提供している推論APIを使用しています。このモデル（または別のモデル）の独自の推論エンドポイントをお持ちの場合は、上記のURLエンドポイントをご自分のURLエンドポイントで置き換えることができます。
<Tip>
StarCoderとOpenAssistantは無料で利用でき、シンプルなタスクには非常に優れた性能を発揮します。ただし、より複雑なプロンプトを処理する際には、チェックポイントが十分でないことがあります。そのような場合には、現時点ではオープンソースではないものの、パフォーマンスが向上する可能性のあるOpenAIモデルを試してみることをお勧めします。
</Tip>
これで準備が整いました！これから、あなたが利用できる2つのAPIについて詳しく説明します。
### Single execution (run)
単一実行メソッドは、エージェントの [`~Agent.run`] メソッドを使用する場合です。
```py
agent.run("Draw me a picture of rivers and lakes.")
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes.png" width=200>
これは、実行したいタスクに適したツール（またはツール）を自動的に選択し、適切に実行します。1つまたは複数のタスクを同じ命令で実行することができます（ただし、命令が複雑であるほど、エージェントが失敗する可能性が高くなります）。
```py
agent.run("Draw me a picture of the sea then transform the picture to add an island")
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/sea_and_island.png" width=200>
<br/>
[`~Agent.run`] 操作は独立して実行できますので、異なるタスクで何度も実行することができます。
注意点として、あなたの `agent` は単なる大規模な言語モデルであるため、プロンプトのわずかな変更でも完全に異なる結果が得られる可能性があります。したがって、実行したいタスクをできるだけ明確に説明することが重要です。良いプロンプトの書き方については、[こちら](custom_tools#writing-good-user-inputs) で詳しく説明しています。
実行ごとに状態を保持したり、テキスト以外のオブジェクトをエージェントに渡したりする場合は、エージェントが使用する変数を指定することができます。例えば、最初の川や湖の画像を生成し、その画像に島を追加するようにモデルに指示するには、次のように行うことができます：
```python
picture = agent.run("Generate a picture of rivers and lakes.")
updated_picture = agent.run("Transform the image in `picture` to add an island to it.", picture=picture)
```
<Tip>
これは、モデルがあなたのリクエストを理解できない場合や、ツールを混同する場合に役立つことがあります。例えば：
```py
agent.run("Draw me the picture of a capybara swimming in the sea")
```
ここでは、モデルは2つの方法で解釈できます：
- `text-to-image`に海で泳ぐカピバラを生成させる
- または、`text-to-image`でカピバラを生成し、それを海で泳がせるために`image-transformation`ツールを使用する
最初のシナリオを強制したい場合は、プロンプトを引数として渡すことができます：
```py
agent.run("Draw me a picture of the `prompt`", prompt="a capybara swimming in the sea")
```
</Tip>
### Chat-based execution (チャット)
エージェントは、[`~Agent.chat`] メソッドを使用することで、チャットベースのアプローチも可能です。
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes.png" width=200>
```py
agent.chat("Transform the picture so that there is a rock in there")
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes_and_beaver.png" width=200>
<br/>
これは、指示をまたいで状態を保持したい場合に便利なアプローチで、単一の指示に比べて複雑な指示を処理するのは難しいかもしれません（その場合は [`~Agent.run`] メソッドの方が適しています）。
このメソッドは、非テキスト型の引数や特定のプロンプトを渡したい場合にも使用できます。
### ⚠️ Remote execution
デモンストレーションの目的やすべてのセットアップで使用できるように、リリースのためにいくつかのデフォルトツール用のリモート実行ツールも作成しました。これらは [推論エンドポイント](https://huggingface.co/inference-endpoints) を使用して作成されます。
これらは現在オフになっていますが、リモート実行ツールを自分で設定する方法については、[カスタムツールガイド](./custom_tools) を読むことをお勧めします。
### What's happening here? What are tools, and what are agents?
#### Agents
ここでの「エージェント」とは、大規模な言語モデルのことであり、特定の一連のツールにアクセスできるようにプロンプトを設定しています。
LLM（大規模言語モデル）は、コードの小さなサンプルを生成するのにかなり優れており、このAPIは、エージェントに特定のツールセットを使用してタスクを実行するコードの小さなサンプルを生成させることに利用しています。このプロンプトは、エージェントにタスクとツールの説明を提供することで、エージェントが使用しているツールのドキュメントにアクセスし、関連するコードを生成できるようになります。
#### Tools
ツールは非常に単純で、名前と説明からなる単一の関数です。それから、これらのツールの説明を使用してエージェントをプロンプトします。プロンプトを通じて、エージェントに、ツールを使用してクエリで要求されたタスクをどのように実行するかを示します。特に、ツールの期待される入力と出力を示します。
これは新しいツールを使用しており、パイプラインではなくツールを使用しています。なぜなら、エージェントは非常に原子的なツールでより良いコードを生成するからです。パイプラインはよりリファクタリングされ、しばしば複数のタスクを組み合わせています。ツールは非常に単純なタスクに焦点を当てることを意図しています。
#### Code-execution?!
このコードは、ツールとツールと一緒に渡される入力のセットで、当社の小規模なPythonインタープリタで実行されます。すでに提供されたツールとprint関数しか呼び出すことができないため、実行できることはすでに制限されています。Hugging Faceのツールに制限されているため、安全だと考えても問題ありません。
さらに、属性の検索やインポートは許可しておらず（それらは渡された入力/出力を処理するためには必要ないはずです）、最も明らかな攻撃は問題ありません（エージェントにそれらを出力するようにプロンプトする必要があります）。超安全な側に立ちたい場合は、追加の引数 return_code=True を指定して run() メソッドを実行できます。その場合、エージェントは実行するコードを返すだけで、実行するかどうかはあなた次第です。
実行は、違法な操作を試みる行またはエージェントが生成したコードに通常のPythonエラーがある場合に停止します。
### A curated set of tools
私たちは、このようなエージェントを強化できるツールのセットを特定します。以下は、`transformers`に統合されたツールの更新されたリストです：
- **ドキュメント質問応答**: 画像形式のドキュメント（PDFなど）が与えられた場合、このドキュメントに関する質問に回答します（[Donut](./model_doc/donut)）
- **テキスト質問応答**: 長いテキストと質問が与えられた場合、テキスト内の質問に回答します（[Flan-T5](./model_doc/flan-t5)）
- **無条件の画像キャプション**: 画像にキャプションを付けます！（[BLIP](./model_doc/blip)）
- **画像質問応答**: 画像が与えられた場合、その画像に関する質問に回答します（[VILT](./model_doc/vilt)）
- **画像セグメンテーション**: 画像とプロンプトが与えられた場合、そのプロンプトのセグメンテーションマスクを出力します（[CLIPSeg](./model_doc/clipseg)）
- **音声からテキストへの変換**: 人の話し声のオーディオ録音が与えられた場合、その音声をテキストに転記します（[Whisper](./model_doc/whisper)）
- **テキストから音声への変換**: テキストを音声に変換します（[SpeechT5](./model_doc/speecht5)）
- **ゼロショットテキスト分類**: テキストとラベルのリストが与えられた場合、テキストが最も対応するラベルを識別します（[BART](./model_doc/bart)）
- **テキスト要約**: 長いテキストを1つまたは数文に要約します（[BART](./model_doc/bart)）
- **翻訳**: テキストを指定された言語に翻訳します（[NLLB](./model_doc/nllb)）
これらのツールはtransformersに統合されており、手動でも使用できます。たとえば、次のように使用できます：
```py
from transformers import load_tool
tool = load_tool("text-to-speech")
audio = tool("This is a text to speech tool")
```
### Custom tools
私たちは、厳選されたツールのセットを特定する一方、この実装が提供する主要な価値は、カスタムツールを迅速に作成して共有できる能力だと強く信じています。
ツールのコードをHugging Face Spaceまたはモデルリポジトリにプッシュすることで、エージェントと直接連携してツールを活用できます。[`huggingface-tools` organization](https://huggingface.co/huggingface-tools)には、**transformers非依存**のいくつかのツールが追加されました：
- **テキストダウンローダー**: ウェブURLからテキストをダウンロードするためのツール
- **テキストから画像へ**: プロンプトに従って画像を生成するためのツール。安定した拡散を活用します
- **画像変換**: 初期画像とプロンプトを指定して画像を変更するためのツール。instruct pix2pixの安定した拡散を活用します
- **テキストからビデオへ**: プロンプトに従って小さなビデオを生成するためのツール。damo-vilabを活用します
最初から使用しているテキストから画像へのツールは、[*huggingface-tools/text-to-image*](https://huggingface.co/spaces/huggingface-tools/text-to-image)にあるリモートツールです！今後も、この組織および他の組織にさらにこのようなツールをリリースし、この実装をさらに強化していきます。
エージェントはデフォルトで[`huggingface-tools`](https://huggingface.co/huggingface-tools)にあるツールにアクセスできます。
ツールの作成と共有方法、またHubに存在するカスタムツールを活用する方法についての詳細は、[次のガイド](custom_tools)で説明しています。
### Code generation
これまで、エージェントを使用してあなたのためにアクションを実行する方法を示しました。ただし、エージェントはコードを生成するだけで、非常に制限されたPythonインタープリタを使用して実行します。生成されたコードを異なる環境で使用したい場合、エージェントにコードを返すように指示できます。ツールの定義と正確なインポートも含めて。
例えば、以下の命令：
```python
agent.run("Draw me a picture of rivers and lakes", return_code=True)
```
次のコードを返します
```python
from transformers import load_tool
image_generator = load_tool("huggingface-tools/text-to-image")
image = image_generator(prompt="rivers and lakes")
```
その後、自分で変更して実行できます。
|
transformers/docs/source/ja/transformers_agents.md/0
|
{
"file_path": "transformers/docs/source/ja/transformers_agents.md",
"repo_id": "transformers",
"token_count": 7879
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| 296
|
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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# 사용자 정의 모델 공유하기[[sharing-custom-models]]
🤗 Transformers 라이브러리는 쉽게 확장할 수 있도록 설계되었습니다.
모든 모델은 추상화 없이 저장소의 지정된 하위 폴더에 완전히 코딩되어 있으므로, 손쉽게 모델링 파일을 복사하고 필요에 따라 조정할 수 있습니다.
완전히 새로운 모델을 만드는 경우에는 처음부터 시작하는 것이 더 쉬울 수 있습니다.
이 튜토리얼에서는 Transformers 내에서 사용할 수 있도록 사용자 정의 모델과 구성을 작성하는 방법과
🤗 Transformers 라이브러리에 없는 경우에도 누구나 사용할 수 있도록 (의존성과 함께) 커뮤니티에 공유하는 방법을 배울 수 있습니다.
[timm 라이브러리](https://github.com/rwightman/pytorch-image-models)의 ResNet 클래스를 [`PreTrainedModel`]로 래핑한 ResNet 모델을 예로 모든 것을 설명합니다.
## 사용자 정의 구성 작성하기[[writing-a-custom-configuration]]
모델에 들어가기 전에 먼저 구성을 작성해보도록 하겠습니다.
모델의 `configuration`은 모델을 만들기 위해 필요한 모든 중요한 것들을 포함하고 있는 객체입니다.
다음 섹션에서 볼 수 있듯이, 모델은 `config`를 사용해서만 초기화할 수 있기 때문에 완벽한 구성이 필요합니다.
아래 예시에서는 ResNet 클래스의 인수(argument)를 조정해보겠습니다.
다른 구성은 가능한 ResNet 중 다른 유형을 제공합니다.
그런 다음 몇 가지 유효성을 확인한 후 해당 인수를 저장합니다.
```python
from transformers import PretrainedConfig
from typing import List
class ResnetConfig(PretrainedConfig):
model_type = "resnet"
def __init__(
self,
block_type="bottleneck",
layers: List[int] = [3, 4, 6, 3],
num_classes: int = 1000,
input_channels: int = 3,
cardinality: int = 1,
base_width: int = 64,
stem_width: int = 64,
stem_type: str = "",
avg_down: bool = False,
**kwargs,
):
if block_type not in ["basic", "bottleneck"]:
raise ValueError(f"`block_type` must be 'basic' or bottleneck', got {block_type}.")
if stem_type not in ["", "deep", "deep-tiered"]:
raise ValueError(f"`stem_type` must be '', 'deep' or 'deep-tiered', got {stem_type}.")
self.block_type = block_type
self.layers = layers
self.num_classes = num_classes
self.input_channels = input_channels
self.cardinality = cardinality
self.base_width = base_width
self.stem_width = stem_width
self.stem_type = stem_type
self.avg_down = avg_down
super().__init__(**kwargs)
```
사용자 정의 `configuration`을 작성할 때 기억해야 할 세 가지 중요한 사항은 다음과 같습니다:
- `PretrainedConfig`을 상속해야 합니다.
- `PretrainedConfig`의 `__init__`은 모든 kwargs를 허용해야 하고,
- 이러한 `kwargs`는 상위 클래스 `__init__`에 전달되어야 합니다.
상속은 🤗 Transformers 라이브러리에서 모든 기능을 가져오는 것입니다.
이러한 점으로부터 비롯되는 두 가지 제약 조건은 `PretrainedConfig`에 설정하는 것보다 더 많은 필드가 있습니다.
`from_pretrained` 메서드로 구성을 다시 로드할 때 해당 필드는 구성에서 수락한 후 상위 클래스로 보내야 합니다.
모델을 auto 클래스에 등록하지 않는 한, `configuration`에서 `model_type`을 정의(여기서 `model_type="resnet"`)하는 것은 필수 사항이 아닙니다 (마지막 섹션 참조).
이렇게 하면 라이브러리의 다른 모델 구성과 마찬가지로 구성을 쉽게 만들고 저장할 수 있습니다.
다음은 resnet50d 구성을 생성하고 저장하는 방법입니다:
```py
resnet50d_config = ResnetConfig(block_type="bottleneck", stem_width=32, stem_type="deep", avg_down=True)
resnet50d_config.save_pretrained("custom-resnet")
```
이렇게 하면 `custom-resnet` 폴더 안에 `config.json`이라는 파일이 저장됩니다.
그런 다음 `from_pretrained` 메서드를 사용하여 구성을 다시 로드할 수 있습니다.
```py
resnet50d_config = ResnetConfig.from_pretrained("custom-resnet")
```
구성을 Hub에 직접 업로드하기 위해 [`PretrainedConfig`] 클래스의 [`~PretrainedConfig.push_to_hub`]와 같은 다른 메서드를 사용할 수 있습니다.
## 사용자 정의 모델 작성하기[[writing-a-custom-model]]
이제 ResNet 구성이 있으므로 모델을 작성할 수 있습니다.
실제로는 두 개를 작성할 것입니다. 하나는 이미지 배치에서 hidden features를 추출하는 것([`BertModel`]과 같이), 다른 하나는 이미지 분류에 적합한 것입니다([`BertForSequenceClassification`]과 같이).
이전에 언급했듯이 이 예제에서는 단순하게 하기 위해 모델의 느슨한 래퍼(loose wrapper)만 작성할 것입니다.
이 클래스를 작성하기 전에 블록 유형과 실제 블록 클래스 간의 매핑 작업만 하면 됩니다.
그런 다음 `ResNet` 클래스로 전달되어 `configuration`을 통해 모델이 선언됩니다:
```py
from transformers import PreTrainedModel
from timm.models.resnet import BasicBlock, Bottleneck, ResNet
from .configuration_resnet import ResnetConfig
BLOCK_MAPPING = {"basic": BasicBlock, "bottleneck": Bottleneck}
class ResnetModel(PreTrainedModel):
config_class = ResnetConfig
def __init__(self, config):
super().__init__(config)
block_layer = BLOCK_MAPPING[config.block_type]
self.model = ResNet(
block_layer,
config.layers,
num_classes=config.num_classes,
in_chans=config.input_channels,
cardinality=config.cardinality,
base_width=config.base_width,
stem_width=config.stem_width,
stem_type=config.stem_type,
avg_down=config.avg_down,
)
def forward(self, tensor):
return self.model.forward_features(tensor)
```
이미지 분류 모델을 만들기 위해서는 forward 메소드만 변경하면 됩니다:
```py
import torch
class ResnetModelForImageClassification(PreTrainedModel):
config_class = ResnetConfig
def __init__(self, config):
super().__init__(config)
block_layer = BLOCK_MAPPING[config.block_type]
self.model = ResNet(
block_layer,
config.layers,
num_classes=config.num_classes,
in_chans=config.input_channels,
cardinality=config.cardinality,
base_width=config.base_width,
stem_width=config.stem_width,
stem_type=config.stem_type,
avg_down=config.avg_down,
)
def forward(self, tensor, labels=None):
logits = self.model(tensor)
if labels is not None:
loss = torch.nn.functional.cross_entropy(logits, labels)
return {"loss": loss, "logits": logits}
return {"logits": logits}
```
두 경우 모두 `PreTrainedModel`를 상속받고, `config`를 통해 상위 클래스 초기화를 호출하다는 점을 기억하세요 (일반적인 `torch.nn.Module`을 작성할 때와 비슷함).
모델을 auto 클래스에 등록하고 싶은 경우에는 `config_class`를 설정하는 부분이 필수입니다 (마지막 섹션 참조).
<Tip>
라이브러리에 존재하는 모델과 굉장히 유사하다면, 모델을 생성할 때 구성을 참조해 재사용할 수 있습니다.
</Tip>
원하는 것을 모델이 반환하도록 할 수 있지만, `ResnetModelForImageClassification`에서 했던 것 처럼
레이블을 통과시켰을 때 손실과 함께 사전 형태로 반환하는 것이 [`Trainer`] 클래스 내에서 직접 모델을 사용하기에 유용합니다.
자신만의 학습 루프 또는 다른 학습 라이브러리를 사용할 계획이라면 다른 출력 형식을 사용해도 좋습니다.
이제 모델 클래스가 있으므로 하나 생성해 보겠습니다:
```py
resnet50d = ResnetModelForImageClassification(resnet50d_config)
```
다시 말하지만, [`~PreTrainedModel.save_pretrained`]또는 [`~PreTrainedModel.push_to_hub`]처럼 [`PreTrainedModel`]에 속하는 모든 메소드를 사용할 수 있습니다.
다음 섹션에서 두 번째 메소드를 사용해 모델 코드와 모델 가중치를 업로드하는 방법을 살펴보겠습니다.
먼저, 모델 내부에 사전 훈련된 가중치를 로드해 보겠습니다.
이 예제를 활용할 때는, 사용자 정의 모델을 자신만의 데이터로 학습시킬 것입니다.
이 튜토리얼에서는 빠르게 진행하기 위해 사전 훈련된 resnet50d를 사용하겠습니다.
아래 모델은 resnet50d의 래퍼이기 때문에, 가중치를 쉽게 로드할 수 있습니다.
```py
import timm
pretrained_model = timm.create_model("resnet50d", pretrained=True)
resnet50d.model.load_state_dict(pretrained_model.state_dict())
```
이제 [`~PreTrainedModel.save_pretrained`] 또는 [`~PreTrainedModel.push_to_hub`]를 사용할 때 모델 코드가 저장되는지 확인해봅시다.
## Hub로 코드 업로드하기[[sending-the-code-to-the-hub]]
<Tip warning={true}>
이 API는 실험적이며 다음 릴리스에서 약간의 변경 사항이 있을 수 있습니다.
</Tip>
먼저 모델이 `.py` 파일에 완전히 정의되어 있는지 확인하세요.
모든 파일이 동일한 작업 경로에 있기 때문에 상대경로 임포트(relative import)에 의존할 수 있습니다 (transformers에서는 이 기능에 대한 하위 모듈을 지원하지 않습니다).
이 예시에서는 작업 경로 안의 `resnet_model`에서 `modeling_resnet.py` 파일과 `configuration_resnet.py` 파일을 정의합니다.
구성 파일에는 `ResnetConfig`에 대한 코드가 있고 모델링 파일에는 `ResnetModel` 및 `ResnetModelForImageClassification`에 대한 코드가 있습니다.
```
.
└── resnet_model
├── __init__.py
├── configuration_resnet.py
└── modeling_resnet.py
```
Python이 `resnet_model`을 모듈로 사용할 수 있도록 감지하는 목적이기 때문에 `__init__.py`는 비어 있을 수 있습니다.
<Tip warning={true}>
라이브러리에서 모델링 파일을 복사하는 경우,
모든 파일 상단에 있는 상대 경로 임포트(relative import) 부분을 `transformers` 패키지에서 임포트 하도록 변경해야 합니다.
</Tip>
기존 구성이나 모델을 재사용(또는 서브 클래스화)할 수 있습니다.
커뮤니티에 모델을 공유하기 위해서는 다음 단계를 따라야 합니다:
먼저, 새로 만든 파일에 ResNet 모델과 구성을 임포트합니다:
```py
from resnet_model.configuration_resnet import ResnetConfig
from resnet_model.modeling_resnet import ResnetModel, ResnetModelForImageClassification
```
다음으로 `save_pretrained` 메소드를 사용해 해당 객체의 코드 파일을 복사하고,
복사한 파일을 Auto 클래스로 등록하고(모델인 경우) 실행합니다:
```py
ResnetConfig.register_for_auto_class()
ResnetModel.register_for_auto_class("AutoModel")
ResnetModelForImageClassification.register_for_auto_class("AutoModelForImageClassification")
```
`configuration`에 대한 auto 클래스를 지정할 필요는 없지만(`configuration` 관련 auto 클래스는 AutoConfig 클래스 하나만 있음), 모델의 경우에는 지정해야 합니다.
사용자 지정 모델은 다양한 작업에 적합할 수 있으므로, 모델에 맞는 auto 클래스를 지정해야 합니다.
다음으로, 이전에 작업했던 것과 마찬가지로 구성과 모델을 작성합니다:
```py
resnet50d_config = ResnetConfig(block_type="bottleneck", stem_width=32, stem_type="deep", avg_down=True)
resnet50d = ResnetModelForImageClassification(resnet50d_config)
pretrained_model = timm.create_model("resnet50d", pretrained=True)
resnet50d.model.load_state_dict(pretrained_model.state_dict())
```
이제 모델을 Hub로 업로드하기 위해 로그인 상태인지 확인하세요.
터미널에서 다음 코드를 실행해 확인할 수 있습니다:
```bash
huggingface-cli login
```
주피터 노트북의 경우에는 다음과 같습니다:
```py
from huggingface_hub import notebook_login
notebook_login()
```
그런 다음 이렇게 자신의 네임스페이스(또는 자신이 속한 조직)에 업로드할 수 있습니다:
```py
resnet50d.push_to_hub("custom-resnet50d")
```
On top of the modeling weights and the configuration in json format, this also copied the modeling and
configuration `.py` files in the folder `custom-resnet50d` and uploaded the result to the Hub. You can check the result
in this [model repo](https://huggingface.co/sgugger/custom-resnet50d).
json 형식의 모델링 가중치와 구성 외에도 `custom-resnet50d` 폴더 안의 모델링과 구성 `.py` 파일을 복사하해 Hub에 업로드합니다.
[모델 저장소](https://huggingface.co/sgugger/custom-resnet50d)에서 결과를 확인할 수 있습니다.
[sharing tutorial](model_sharing) 문서의 `push_to_hub` 메소드에서 자세한 내용을 확인할 수 있습니다.
## 사용자 정의 코드로 모델 사용하기[[using-a-model-with-custom-code]]
auto 클래스와 `from_pretrained` 메소드를 사용하여 사용자 지정 코드 파일과 함께 모든 구성, 모델, 토크나이저를 사용할 수 있습니다.
Hub에 업로드된 모든 파일 및 코드는 멜웨어가 있는지 검사되지만 (자세한 내용은 [Hub 보안](https://huggingface.co/docs/hub/security#malware-scanning) 설명 참조),
자신의 컴퓨터에서 모델 코드와 작성자가 악성 코드를 실행하지 않는지 확인해야 합니다.
사용자 정의 코드로 모델을 사용하려면 `trust_remote_code=True`로 설정하세요:
```py
from transformers import AutoModelForImageClassification
model = AutoModelForImageClassification.from_pretrained("sgugger/custom-resnet50d", trust_remote_code=True)
```
모델 작성자가 악의적으로 코드를 업데이트하지 않았다는 점을 확인하기 위해, 커밋 해시(commit hash)를 `revision`으로 전달하는 것도 강력히 권장됩니다 (모델 작성자를 완전히 신뢰하지 않는 경우).
```py
commit_hash = "ed94a7c6247d8aedce4647f00f20de6875b5b292"
model = AutoModelForImageClassification.from_pretrained(
"sgugger/custom-resnet50d", trust_remote_code=True, revision=commit_hash
)
```
Hub에서 모델 저장소의 커밋 기록을 찾아볼 때, 모든 커밋의 커밋 해시를 쉽게 복사할 수 있는 버튼이 있습니다.
## 사용자 정의 코드로 만든 모델을 auto 클래스로 등록하기[[registering-a-model-with-custom-code-to-the-auto-classes]]
🤗 Transformers를 상속하는 라이브러리를 작성하는 경우 사용자 정의 모델을 auto 클래스에 추가할 수 있습니다.
사용자 정의 모델을 사용하기 위해 해당 라이브러리를 임포트해야 하기 때문에, 이는 Hub로 코드를 업로드하는 것과 다릅니다 (Hub에서 자동적으로 모델 코드를 다운로드 하는 것과 반대).
구성에 기존 모델 유형과 다른 `model_type` 속성이 있고 모델 클래스에 올바른 `config_class` 속성이 있는 한,
다음과 같이 auto 클래스에 추가할 수 있습니다:
```py
from transformers import AutoConfig, AutoModel, AutoModelForImageClassification
AutoConfig.register("resnet", ResnetConfig)
AutoModel.register(ResnetConfig, ResnetModel)
AutoModelForImageClassification.register(ResnetConfig, ResnetModelForImageClassification)
```
사용자 정의 구성을 [`AutoConfig`]에 등록할 때 사용되는 첫 번째 인수는 사용자 정의 구성의 `model_type`과 일치해야 합니다.
또한, 사용자 정의 모델을 auto 클래스에 등록할 때 사용되는 첫 번째 인수는 해당 모델의 `config_class`와 일치해야 합니다.
|
transformers/docs/source/ko/custom_models.md/0
|
{
"file_path": "transformers/docs/source/ko/custom_models.md",
"repo_id": "transformers",
"token_count": 10731
}
| 297
|
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Whisper [[whisper]]
## 개요 [[overview]]
Whisper 모델은 Alec Radford, Jong Wook Kim, Tao Xu, Greg Brockman, Christine McLeavey, Ilya Sutskever에 의해 [Robust Speech Recognition via Large-Scale Weak Supervision](https://cdn.openai.com/papers/whisper.pdf)에서 제안되었습니다.
논문의 초록은 다음과 같습니다:
*우리는 인터넷에서 대량의 오디오를 글로 옮긴 것을 예측하도록 간단히 훈련된 음성 처리 시스템의 성능을 연구합니다. 68만 시간의 다국어 및 다중 작업 지도(multitask supervision)에 확장했을 때, 결과 모델은 표준 벤치마크에 잘 일반화되며, 미세 조정이 필요 없는 제로샷 전송 설정에서 이전의 완전히 지도된(fully-supervised) 결과와 경쟁할 수 있는 경우가 많습니다. 사람과 비교하면, 이 모델은 사람의 정확도와 견고성에 근접합니다. 우리는 강력한 음성 처리를 위한 추가 작업의 기반이 될 모델과 추론 코드를 공개합니다.*
팁:
- 이 모델은 일반적으로 별도의 미세 조정 없이도 잘 작동합니다.
- 아키텍처는 고전적인 인코더-디코더 아키텍처를 따르기 때문에, 추론을 위해 [`~generation.GenerationMixin.generate`] 함수를 사용합니다.
- 현재 추론은 짧은 형식에만 구현되어 있으며, 오디오는 30초 미만의 세그먼트로 미리 분할되어야 합니다. 타임스탬프를 포함한 긴 형식에 대한 추론은 향후 릴리스에서 구현될 예정입니다.
- [`WhisperProcessor`]를 사용하여 모델에 사용할 오디오를 준비하고, 예측된 ID를 텍스트로 디코딩할 수 있습니다.
- 모델과 프로세서를 변환하려면 다음을 사용하는 것이 좋습니다:
```bash
python src/transformers/models/whisper/convert_openai_to_hf.py --checkpoint_path "" --pytorch_dump_folder_path "Arthur/whisper-3" --convert_preprocessor True
```
스크립트는 OpenAI 체크포인트에서 필요한 모든 매개변수를 자동으로 결정합니다. OpenAI 변환을 수행하려면 `tiktoken` 라이브러리를 설치해야 합니다.
라이브러리를 설치해야 OpenAI 토큰화기를 `tokenizers` 버전으로 변환할 수 있습니다.
이 모델은 [Arthur Zucker](https://huggingface.co/ArthurZ)에 의해 제공되었습니다. 이 모델의 Tensorflow 버전은 [amyeroberts](https://huggingface.co/amyeroberts)에 의해 제공되었습니다.
원본 코드는 [여기](https://github.com/openai/whisper)에서 찾을 수 있습니다.
## WhisperConfig [[whisperconfig]]
[[autodoc]] WhisperConfig
## WhisperTokenizer [[whispertokenizer]]
[[autodoc]] WhisperTokenizer
- set_prefix_tokens
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## WhisperTokenizerFast [[whispertokenizerfast]]
[[autodoc]] WhisperTokenizerFast
- set_prefix_tokens
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## WhisperFeatureExtractor [[whisperfeatureextractor]]
[[autodoc]] WhisperFeatureExtractor
- __call__
## WhisperProcessor [[whisperprocessor]]
[[autodoc]] WhisperProcessor
- __call__
- from_pretrained
- save_pretrained
- batch_decode
- decode
## WhisperModel [[whispermodel]]
[[autodoc]] WhisperModel
- forward
- _mask_input_features
## WhisperForConditionalGeneration [[whisperforconditionalgeneration]]
[[autodoc]] WhisperForConditionalGeneration
- forward
## WhisperForAudioClassification [[whisperforaudioclassification]]
[[autodoc]] WhisperForAudioClassification
- forward
## TFWhisperModel [[tfwhispermodel]]
[[autodoc]] TFWhisperModel
- call
## TFWhisperForConditionalGeneration [[tfwhisperforconditionalgeneration]]
[[autodoc]] TFWhisperForConditionalGeneration
- call
## FlaxWhisperModel [[flaxwhispermodel]]
[[autodoc]] FlaxWhisperModel
- __call__
## FlaxWhisperForConditionalGeneration [[flaxwhisperforconditionalgeneration]]
[[autodoc]] FlaxWhisperForConditionalGeneration
- __call__
## FlaxWhisperForAudioClassification [[flaxwhisperforaudioclassification]]
[[autodoc]] FlaxWhisperForAudioClassification
- __call__
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# 이념과 목표 [[philosophy]]
🤗 Transformers는 다음과 같은 목적으로 만들어진 독자적인 라이브러리입니다:
- 대규모 Transformers 모델을 사용하거나 연구하거나 확장하려는 기계 학습 연구원 및 교육자를 위한 것입니다.
- 모델을 미세 조정하거나 제작용으로 사용하고자 하는 실전 개발자를 위한 것입니다.
- 특정 기계 학습 작업을 해결하기 위해 사전훈련된 모델을 다운로드하고 사용하기만 하려는 엔지니어를 위한 것입니다.
이 라이브러리는 두 가지 주요 목표를 가지고 설계되었습니다:
1. 사용하기 쉽고 빠르게 만드는 것:
- 학습해야 할 사용자 대상 추상화의 수를 제한했습니다. 실제로 거의 추상화가 없으며, 각 모델을 사용하기 위해 필요한 세 가지 표준 클래스인 [configuration](main_classes/configuration), [models](main_classes/model) 및 전처리 클래스인 ([tokenizer](main_classes/tokenizer)는 NLP용, [image processor](main_classes/image_processor)는 비전용, [feature extractor](main_classes/feature_extractor)는 오디오용, [processor](main_classes/processors)는 멀티모달 입력용)만 사용합니다.
- 이러한 클래스는 공통적인 `from_pretrained()` 메서드를 사용하여 미리 훈련된 인스턴스에서 간단하고 통일된 방식으로 초기화할 수 있습니다. 이 메소드는 미리 훈련된 체크포인트에서 관련 클래스 인스턴스와 관련 데이터(구성의 하이퍼파라미터, 토크나이저의 어휘, 모델의 가중치)를 (필요한 경우) 다운로드하고 캐시하며 가져옵니다. 체크포인트는 [Hugging Face Hub](https://huggingface.co/models)에서 제공되거나 사용자 자체의 저장된 체크포인트에서 제공됩니다.
- 이 세 가지 기본 클래스 위에 라이브러리는 [`pipeline`] API를 제공하여 주어진 작업에 대해 모델을 빠르게 추론하는 데 사용하고, [`Trainer`]를 제공하여 PyTorch 모델을 빠르게 훈련하거나 미세 조정할 수 있도록 합니다(모든 TensorFlow 모델은 `Keras.fit`과 호환됩니다).
- 결과적으로, 이 라이브러리는 신경망을 구축하기 위한 모듈식 도구 상자가 아닙니다. 라이브러리를 확장하거나 구축하려면 일반적인 Python, PyTorch, TensorFlow, Keras 모듈을 사용하고 라이브러리의 기본 클래스를 상속하여 모델 로딩 및 저장과 같은 기능을 재사용하면 됩니다. 모델에 대한 코딩 철학에 대해 더 자세히 알고 싶다면 [Repeat Yourself](https://huggingface.co/blog/transformers-design-philosophy) 블로그 글을 확인해보세요.
2. 원래 모델과 가능한 한 근접한 성능을 제공하는 최신 모델을 제공하는 것:
- 각 아키텍처에 대해 공식 저자가 제공한 결과를 재현하는 적어도 한 가지 예제를 제공합니다.
- 코드는 원래 코드와 가능한 한 유사하게 유지되므로 PyTorch 코드는 TensorFlow 코드로 변환되어 *pytorchic*하지 않을 수 있고, 그 반대의 경우도 마찬가지입니다.
기타 목표 몇 가지:
- 모델의 내부를 가능한 일관되게 노출시키기:
- 전체 은닉 상태와 어텐션 가중치에 대한 액세스를 단일 API를 사용하여 제공합니다.
- 전처리 클래스 및 기본 모델 API는 모델 간에 쉽게 전환할 수 있도록 표준화되어 있습니다.
- 미세 조정 및 모델 탐색을 위한 유망한 도구들을 주관적으로 선택하기:
- 미세 조정을 위해 어휘 및 임베딩에 새로운 토큰을 간단하고 일관된 방식으로 추가하는 방법을 제공합니다.
- Transformer 헤드를 마스킹하고 가지치기하는 간단한 방법을 제공합니다.
- PyTorch, TensorFlow 2.0 및 Flax 간에 쉽게 전환할 수 있도록 하여 하나의 프레임워크로 훈련하고 다른 프레임워크로 추론할 수 있게 합니다.
## 주요 개념 [[main-concepts]]
이 라이브러리는 각 모델에 대해 세 가지 유형의 클래스를 기반으로 구축되었습니다:
- **모델 클래스**는 라이브러리에서 제공하는 사전 훈련된 가중치와 함께 작동하는 PyTorch 모델([torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module)), Keras 모델([tf.keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model)), JAX/Flax 모델([flax.linen.Module](https://flax.readthedocs.io/en/latest/api_reference/flax.linen/module.html))일 수 있습니다.
- **구성 클래스**는 모델을 구축하는 데 필요한 하이퍼파라미터(예: 레이어 수 및 은닉 크기)를 저장합니다. 구성 클래스를 직접 인스턴스화할 필요는 없습니다. 특히, 수정 없이 고 사전 학습된 모델을 사용하는 경우 모델을 생성하면 모델의 일부인 구성을 자동으로 인스턴스화됩니다.
- **전처리 클래스**는 원시 데이터를 모델이 수용하는 형식으로 변환합니다. [Tokenizer](main_classes/tokenizer)는 각 모델의 어휘를 저장하고, 문자열을 토큰 임베딩 인덱스 리스트로 인코딩하고 디코딩하기 위한 메소드를 제공합니다. [Image processors](main_classes/image_processor)는 비전 입력을 전처리하고, [feature extractors](main_classes/feature_extractor)는 오디오 입력을 전처리하며, [processor](main_classes/processors)는 멀티모달 입력을 처리합니다.
모든 이러한 클래스는 사전 훈련된 인스턴스에서 인스턴스화하고 로컬로 저장하며, 세 가지 메소드를 사용하여 Hub에서 공유할 수 있습니다:
- `from_pretrained()` 메소드를 사용하면 라이브러리 자체에서 제공하는 사전 훈련된 버전(지원되는 모델은 [Model Hub](https://huggingface.co/models)에서 찾을 수 있음)이나 사용자가 로컬로 저장한 경우(또는 서버에 저장한 경우)의 모델, 구성 및 전처리 클래스를 인스턴스화할 수 있습니다.
- `save_pretrained()` 메소드를 사용하면 모델, 구성 및 전처리 클래스를 로컬로 저장하여 `from_pretrained()`를 사용하여 다시 가져올 수 있습니다.
- `push_to_hub()` 메소드를 사용하면 모델, 구성 및 전처리 클래스를 Hub에 공유하여 모두에게 쉽게 접근할 수 있습니다.
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# 오디오 분류[[audio_classification]]
[[open-in-colab]]
<Youtube id="KWwzcmG98Ds"/>
오디오 분류는 텍스트와 마찬가지로 입력 데이터에 클래스 레이블 출력을 할당합니다. 유일한 차이점은 텍스트 입력 대신 원시 오디오 파형이 있다는 것입니다. 오디오 분류의 실제 적용 분야에는 화자의 의도 파악, 언어 분류, 소리로 동물 종을 식별하는 것 등이 있습니다.
이 문서에서 방법을 알아보겠습니다:
1. [MInDS-14](https://huggingface.co/datasets/PolyAI/minds14) 데이터 세트를 [Wav2Vec2](https://huggingface.co/facebook/wav2vec2-base)로 미세 조정하여 화자의 의도를 분류합니다.
2. 추론에 미세 조정된 모델을 사용하세요.
<Tip>
이 작업과 호환되는 모든 아키텍처와 체크포인트를 보려면 [작업 페이지](https://huggingface.co/tasks/audio-classification)를 확인하는 것이 좋습니다.
</Tip>
시작하기 전에 필요한 라이브러리가 모두 설치되어 있는지 확인하세요:
```bash
pip install transformers datasets evaluate
```
모델을 업로드하고 커뮤니티와 공유할 수 있도록 허깅페이스 계정에 로그인하는 것이 좋습니다. 메시지가 표시되면 토큰을 입력하여 로그인합니다:
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## MInDS-14 데이터셋 불러오기[[load_minds_14_dataset]]
먼저 🤗 Datasets 라이브러리에서 MinDS-14 데이터 세트를 가져옵니다:
```py
>>> from datasets import load_dataset, Audio
>>> minds = load_dataset("PolyAI/minds14", name="en-US", split="train")
```
데이터 세트의 `train` 분할을 [`~datasets.Dataset.train_test_split`] 메소드를 사용하여 더 작은 훈련 및 테스트 집합으로 분할합니다. 이렇게 하면 전체 데이터 세트에 더 많은 시간을 소비하기 전에 모든 것이 작동하는지 실험하고 확인할 수 있습니다.
```py
>>> minds = minds.train_test_split(test_size=0.2)
```
이제 데이터 집합을 살펴볼게요:
```py
>>> minds
DatasetDict({
train: Dataset({
features: ['path', 'audio', 'transcription', 'english_transcription', 'intent_class', 'lang_id'],
num_rows: 450
})
test: Dataset({
features: ['path', 'audio', 'transcription', 'english_transcription', 'intent_class', 'lang_id'],
num_rows: 113
})
})
```
데이터 세트에는 `lang_id` 및 `english_transcription`과 같은 유용한 정보가 많이 포함되어 있지만 이 가이드에서는 `audio` 및 `intent_class`에 중점을 둘 것입니다. 다른 열은 [`~datasets.Dataset.remove_columns`] 메소드를 사용하여 제거합니다:
```py
>>> minds = minds.remove_columns(["path", "transcription", "english_transcription", "lang_id"])
```
예시를 살펴보겠습니다:
```py
>>> minds["train"][0]
{'audio': {'array': array([ 0. , 0. , 0. , ..., -0.00048828,
-0.00024414, -0.00024414], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602b9a5fbb1e6d0fbce91f52.wav',
'sampling_rate': 8000},
'intent_class': 2}
```
두 개의 필드가 있습니다:
- `audio`: 오디오 파일을 가져오고 리샘플링하기 위해 호출해야 하는 음성 신호의 1차원 `배열`입니다.
- `intent_class`: 화자의 의도에 대한 클래스 ID를 나타냅니다.
모델이 레이블 ID에서 레이블 이름을 쉽게 가져올 수 있도록 레이블 이름을 정수로 매핑하는 사전을 만들거나 그 반대로 매핑하는 사전을 만듭니다:
```py
>>> labels = minds["train"].features["intent_class"].names
>>> label2id, id2label = dict(), dict()
>>> for i, label in enumerate(labels):
... label2id[label] = str(i)
... id2label[str(i)] = label
```
이제 레이블 ID를 레이블 이름으로 변환할 수 있습니다:
```py
>>> id2label[str(2)]
'app_error'
```
## 전처리[[preprocess]]
다음 단계는 오디오 신호를 처리하기 위해 Wav2Vec2 특징 추출기를 가져오는 것입니다:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained("facebook/wav2vec2-base")
```
MinDS-14 데이터 세트의 샘플링 속도는 8000khz이므로(이 정보는 [데이터세트 카드](https://huggingface.co/datasets/PolyAI/minds14)에서 확인할 수 있습니다), 사전 훈련된 Wav2Vec2 모델을 사용하려면 데이터 세트를 16000kHz로 리샘플링해야 합니다:
```py
>>> minds = minds.cast_column("audio", Audio(sampling_rate=16_000))
>>> minds["train"][0]
{'audio': {'array': array([ 2.2098757e-05, 4.6582241e-05, -2.2803260e-05, ...,
-2.8419291e-04, -2.3305941e-04, -1.1425107e-04], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~APP_ERROR/602b9a5fbb1e6d0fbce91f52.wav',
'sampling_rate': 16000},
'intent_class': 2}
```
이제 전처리 함수를 만듭니다:
1. 가져올 `오디오` 열을 호출하고 필요한 경우 오디오 파일을 리샘플링합니다.
2. 오디오 파일의 샘플링 속도가 모델에 사전 훈련된 오디오 데이터의 샘플링 속도와 일치하는지 확인합니다. 이 정보는 Wav2Vec2 [모델 카드](https://huggingface.co/facebook/wav2vec2-base)에서 확인할 수 있습니다.
3. 긴 입력이 잘리지 않고 일괄 처리되도록 최대 입력 길이를 설정합니다.
```py
>>> def preprocess_function(examples):
... audio_arrays = [x["array"] for x in examples["audio"]]
... inputs = feature_extractor(
... audio_arrays, sampling_rate=feature_extractor.sampling_rate, max_length=16000, truncation=True
... )
... return inputs
```
전체 데이터 세트에 전처리 기능을 적용하려면 🤗 Datasets [`~datasets.Dataset.map`] 함수를 사용합니다. `batched=True`를 설정하여 데이터 집합의 여러 요소를 한 번에 처리하면 `map`의 속도를 높일 수 있습니다. 필요하지 않은 열을 제거하고 `intent_class`의 이름을 모델이 예상하는 이름인 `label`로 변경합니다:
```py
>>> encoded_minds = minds.map(preprocess_function, remove_columns="audio", batched=True)
>>> encoded_minds = encoded_minds.rename_column("intent_class", "label")
```
## 평가하기[[evaluate]]
훈련 중에 메트릭을 포함하면 모델의 성능을 평가하는 데 도움이 되는 경우가 많습니다. 🤗 [Evaluate](https://huggingface.co/docs/evaluate/index) 라이브러리를 사용하여 평가 방법을 빠르게 가져올 수 있습니다. 이 작업에서는 [accuracy(정확도)](https://huggingface.co/spaces/evaluate-metric/accuracy) 메트릭을 가져옵니다(메트릭을 가져오고 계산하는 방법에 대한 자세한 내용은 🤗 Evalutate [빠른 둘러보기](https://huggingface.co/docs/evaluate/a_quick_tour) 참조하세요):
```py
>>> import evaluate
>>> accuracy = evaluate.load("accuracy")
```
그런 다음 예측과 레이블을 [`~evaluate.EvaluationModule.compute`]에 전달하여 정확도를 계산하는 함수를 만듭니다:
```py
>>> import numpy as np
>>> def compute_metrics(eval_pred):
... predictions = np.argmax(eval_pred.predictions, axis=1)
... return accuracy.compute(predictions=predictions, references=eval_pred.label_ids)
```
이제 `compute_metrics` 함수를 사용할 준비가 되었으며, 트레이닝을 설정할 때 이 함수를 사용합니다.
## 훈련[[train]]
<frameworkcontent>
<pt>
<Tip>
[`Trainer`]로 모델을 미세 조정하는 데 익숙하지 않다면 기본 튜토리얼 [여기](../training#train-with-pytorch-trainer)을 살펴보세요!
</Tip>
이제 모델 훈련을 시작할 준비가 되었습니다! [`AutoModelForAudioClassification`]을 이용해서 Wav2Vec2를 불러옵니다. 예상되는 레이블 수와 레이블 매핑을 지정합니다:
```py
>>> from transformers import AutoModelForAudioClassification, TrainingArguments, Trainer
>>> num_labels = len(id2label)
>>> model = AutoModelForAudioClassification.from_pretrained(
... "facebook/wav2vec2-base", num_labels=num_labels, label2id=label2id, id2label=id2label
... )
```
이제 세 단계만 남았습니다:
1. 훈련 하이퍼파라미터를 [`TrainingArguments`]에 정의합니다. 유일한 필수 매개변수는 모델을 저장할 위치를 지정하는 `output_dir`입니다. `push_to_hub = True`를 설정하여 이 모델을 허브로 푸시합니다(모델을 업로드하려면 허깅 페이스에 로그인해야 합니다). 각 에폭이 끝날 때마다 [`Trainer`]가 정확도를 평가하고 훈련 체크포인트를 저장합니다.
2. 모델, 데이터 세트, 토크나이저, 데이터 콜레이터, `compute_metrics` 함수와 함께 훈련 인자를 [`Trainer`]에 전달합니다.
3. [`~Trainer.train`]을 호출하여 모델을 미세 조정합니다.
```py
>>> training_args = TrainingArguments(
... output_dir="my_awesome_mind_model",
... eval_strategy="epoch",
... save_strategy="epoch",
... learning_rate=3e-5,
... per_device_train_batch_size=32,
... gradient_accumulation_steps=4,
... per_device_eval_batch_size=32,
... num_train_epochs=10,
... warmup_ratio=0.1,
... logging_steps=10,
... load_best_model_at_end=True,
... metric_for_best_model="accuracy",
... push_to_hub=True,
... )
>>> trainer = Trainer(
... model=model,
... args=training_args,
... train_dataset=encoded_minds["train"],
... eval_dataset=encoded_minds["test"],
... tokenizer=feature_extractor,
... compute_metrics=compute_metrics,
... )
>>> trainer.train()
```
훈련이 완료되면 모든 사람이 모델을 사용할 수 있도록 [`~transformers.Trainer.push_to_hub`] 메소드를 사용하여 모델을 허브에 공유하세요:
```py
>>> trainer.push_to_hub()
```
</pt>
</frameworkcontent>
<Tip>
For a more in-depth example of how to finetune a model for audio classification, take a look at the corresponding [PyTorch notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/audio_classification.ipynb).
</Tip>
## 추론[[inference]]
이제 모델을 미세 조정했으니 추론에 사용할 수 있습니다!
추론을 실행할 오디오 파일을 가져옵니다. 필요한 경우 오디오 파일의 샘플링 속도를 모델의 샘플링 속도와 일치하도록 리샘플링하는 것을 잊지 마세요!
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("PolyAI/minds14", name="en-US", split="train")
>>> dataset = dataset.cast_column("audio", Audio(sampling_rate=16000))
>>> sampling_rate = dataset.features["audio"].sampling_rate
>>> audio_file = dataset[0]["audio"]["path"]
```
추론을 위해 미세 조정한 모델을 시험해 보는 가장 간단한 방법은 [`pipeline`]에서 사용하는 것입니다. 모델을 사용하여 오디오 분류를 위한 `pipeline`을 인스턴스화하고 오디오 파일을 전달합니다:
```py
>>> from transformers import pipeline
>>> classifier = pipeline("audio-classification", model="stevhliu/my_awesome_minds_model")
>>> classifier(audio_file)
[
{'score': 0.09766869246959686, 'label': 'cash_deposit'},
{'score': 0.07998877018690109, 'label': 'app_error'},
{'score': 0.0781070664525032, 'label': 'joint_account'},
{'score': 0.07667109370231628, 'label': 'pay_bill'},
{'score': 0.0755252093076706, 'label': 'balance'}
]
```
원하는 경우 `pipeline`의 결과를 수동으로 복제할 수도 있습니다:
<frameworkcontent>
<pt>
특징 추출기를 가져와서 오디오 파일을 전처리하고 `입력`을 PyTorch 텐서로 반환합니다:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained("stevhliu/my_awesome_minds_model")
>>> inputs = feature_extractor(dataset[0]["audio"]["array"], sampling_rate=sampling_rate, return_tensors="pt")
```
모델에 입력을 전달하고 로짓을 반환합니다:
```py
>>> from transformers import AutoModelForAudioClassification
>>> model = AutoModelForAudioClassification.from_pretrained("stevhliu/my_awesome_minds_model")
>>> with torch.no_grad():
... logits = model(**inputs).logits
```
확률이 가장 높은 클래스를 가져온 다음 모델의 `id2label` 매핑을 사용하여 이를 레이블로 변환합니다:
```py
>>> import torch
>>> predicted_class_ids = torch.argmax(logits).item()
>>> predicted_label = model.config.id2label[predicted_class_ids]
>>> predicted_label
'cash_deposit'
```
</pt>
</frameworkcontent>
|
transformers/docs/source/ko/tasks/audio_classification.md/0
|
{
"file_path": "transformers/docs/source/ko/tasks/audio_classification.md",
"repo_id": "transformers",
"token_count": 7984
}
| 300
|
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# 의미적 분할(Semantic segmentation)[[semantic-segmentation]]
[[open-in-colab]]
<Youtube id="dKE8SIt9C-w"/>
의미적 분할(semantic segmentation)은 이미지의 각 픽셀에 레이블 또는 클래스를 할당합니다. 분할(segmentation)에는 여러 종류가 있으며, 의미적 분할의 경우 동일한 물체의 고유 인스턴스를 구분하지 않습니다. 두 물체 모두 동일한 레이블이 지정됩니다(예시로, "car-1" 과 "car-2" 대신 "car"로 지정합니다).
실생활에서 흔히 볼 수 있는 의미적 분할의 적용 사례로는 보행자와 중요한 교통 정보를 식별하는 자율 주행 자동차 학습, 의료 이미지의 세포와 이상 징후 식별, 그리고 위성 이미지의 환경 변화 모니터링등이 있습니다.
이번 가이드에서 배울 내용은 다음과 같습니다:
1. [SceneParse150](https://huggingface.co/datasets/scene_parse_150) 데이터 세트를 이용해 [SegFormer](https://huggingface.co/docs/transformers/main/en/model_doc/segformer#segformer) 미세 조정하기.
2. 미세 조정된 모델을 추론에 사용하기.
<Tip>
이 작업과 호환되는 모든 아키텍처와 체크포인트를 보려면 [작업 페이지](https://huggingface.co/tasks/image-segmentation)를 확인하는 것이 좋습니다.
</Tip>
시작하기 전에 필요한 모든 라이브러리가 설치되었는지 확인하세요:
```bash
pip install -q datasets transformers evaluate
```
커뮤니티에 모델을 업로드하고 공유할 수 있도록 Hugging Face 계정에 로그인하는 것을 권장합니다. 프롬프트가 나타나면 토큰을 입력하여 로그인하세요:
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## SceneParse150 데이터 세트 불러오기[[load-sceneparse150-dataset]]
🤗 Datasets 라이브러리에서 SceneParse150 데이터 세트의 더 작은 부분 집합을 가져오는 것으로 시작합니다. 이렇게 하면 데이터 세트 전체에 대한 훈련에 많은 시간을 할애하기 전에 실험을 통해 모든 것이 제대로 작동하는지 확인할 수 있습니다.
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("scene_parse_150", split="train[:50]")
```
데이터 세트의 `train`을 [`~datasets.Dataset.train_test_split`] 메소드를 사용하여 훈련 및 테스트 세트로 분할하세요:
```py
>>> ds = ds.train_test_split(test_size=0.2)
>>> train_ds = ds["train"]
>>> test_ds = ds["test"]
```
그리고 예시를 살펴보세요:
```py
>>> train_ds[0]
{'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=512x683 at 0x7F9B0C201F90>,
'annotation': <PIL.PngImagePlugin.PngImageFile image mode=L size=512x683 at 0x7F9B0C201DD0>,
'scene_category': 368}
```
- `image`: 장면의 PIL 이미지입니다.
- `annotation`: 분할 지도(segmentation map)의 PIL 이미지입니다. 모델의 타겟이기도 합니다.
- `scene_category`: "주방" 또는 "사무실"과 같이 이미지 장면을 설명하는 카테고리 ID입니다. 이 가이드에서는 둘 다 PIL 이미지인 `image`와 `annotation`만을 사용합니다.
나중에 모델을 설정할 때 유용하게 사용할 수 있도록 레이블 ID를 레이블 클래스에 매핑하는 사전도 만들고 싶을 것입니다. Hub에서 매핑을 다운로드하고 `id2label` 및 `label2id` 사전을 만드세요:
```py
>>> import json
>>> from pathlib import Path
>>> from huggingface_hub import hf_hub_download
>>> repo_id = "huggingface/label-files"
>>> filename = "ade20k-id2label.json"
>>> id2label = json.loads(Path(hf_hub_download(repo_id, filename, repo_type="dataset")).read_text())
>>> id2label = {int(k): v for k, v in id2label.items()}
>>> label2id = {v: k for k, v in id2label.items()}
>>> num_labels = len(id2label)
```
## 전처리하기[[preprocess]
다음 단계는 모델에 사용할 이미지와 주석을 준비하기 위해 SegFormer 이미지 프로세서를 불러오는 것입니다. 우리가 사용하는 데이터 세트와 같은 일부 데이터 세트는 배경 클래스로 제로 인덱스를 사용합니다. 하지만 배경 클래스는 150개의 클래스에 실제로는 포함되지 않기 때문에 `do_reduce_labels=True` 를 설정해 모든 레이블에서 배경 클래스를 제거해야 합니다. 제로 인덱스는 `255`로 대체되므로 SegFormer의 손실 함수에서 무시됩니다:
```py
>>> from transformers import AutoImageProcessor
>>> checkpoint = "nvidia/mit-b0"
>>> image_processor = AutoImageProcessor.from_pretrained(checkpoint, do_reduce_labels=True)
```
<frameworkcontent>
<pt>
이미지 데이터 세트에 데이터 증강을 적용하여 과적합에 대해 모델을 보다 강건하게 만드는 것이 일반적입니다. 이 가이드에서는 [torchvision](https://pytorch.org/vision/stable/index.html)의 [`ColorJitter`](https://pytorch.org/vision/stable/generated/torchvision.transforms.ColorJitter.html)를 사용하여 이미지의 색상 속성을 임의로 변경합니다. 하지만, 자신이 원하는 이미지 라이브러리를 사용할 수도 있습니다.
```py
>>> from torchvision.transforms import ColorJitter
>>> jitter = ColorJitter(brightness=0.25, contrast=0.25, saturation=0.25, hue=0.1)
```
이제 모델에 사용할 이미지와 주석을 준비하기 위해 두 개의 전처리 함수를 만듭니다. 이 함수들은 이미지를 `pixel_values`로, 주석을 `labels`로 변환합니다. 훈련 세트의 경우 이미지 프로세서에 이미지를 제공하기 전에 `jitter`를 적용합니다. 테스트 세트의 경우 이미지 프로세서는 `images`를 자르고 정규화하며, 테스트 중에는 데이터 증강이 적용되지 않으므로 `labels`만 자릅니다.
```py
>>> def train_transforms(example_batch):
... images = [jitter(x) for x in example_batch["image"]]
... labels = [x for x in example_batch["annotation"]]
... inputs = image_processor(images, labels)
... return inputs
>>> def val_transforms(example_batch):
... images = [x for x in example_batch["image"]]
... labels = [x for x in example_batch["annotation"]]
... inputs = image_processor(images, labels)
... return inputs
```
모든 데이터 세트에 `jitter`를 적용하려면, 🤗 Datasets [`~datasets.Dataset.set_transform`] 함수를 사용하세요. 즉시 변환이 적용되기 때문에 더 빠르고 디스크 공간을 덜 차지합니다:
```py
>>> train_ds.set_transform(train_transforms)
>>> test_ds.set_transform(val_transforms)
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
이미지 데이터 세트에 데이터 증강을 적용하여 과적합에 대해 모델을 보다 강건하게 만드는 것이 일반적입니다. 이 가이드에서는 [`tf.image`](https://www.tensorflow.org/api_docs/python/tf/image)를 사용하여 이미지의 색상 속성을 임의로 변경합니다. 하지만, 자신이 원하는 이미지 라이브러리를 사용할 수도 있습니다.
별개의 두 변환 함수를 정의합니다:
- 이미지 증강을 포함하는 학습 데이터 변환
- 🤗 Transformers의 컴퓨터 비전 모델은 채널 우선 레이아웃을 기대하기 때문에, 이미지만 바꾸는 검증 데이터 변환
```py
>>> import tensorflow as tf
>>> def aug_transforms(image):
... image = tf.keras.utils.img_to_array(image)
... image = tf.image.random_brightness(image, 0.25)
... image = tf.image.random_contrast(image, 0.5, 2.0)
... image = tf.image.random_saturation(image, 0.75, 1.25)
... image = tf.image.random_hue(image, 0.1)
... image = tf.transpose(image, (2, 0, 1))
... return image
>>> def transforms(image):
... image = tf.keras.utils.img_to_array(image)
... image = tf.transpose(image, (2, 0, 1))
... return image
```
그런 다음 모델을 위해 두 개의 전처리 함수를 만들어 이미지 및 주석 배치를 준비합니다. 이 함수들은 이미지 변환을 적용하고 이전에 로드한 `image_processor`를 사용하여 이미지를 `pixel_values`로, 주석을 `label`로 변환합니다. `ImageProcessor` 는 이미지의 크기 조정과 정규화도 처리합니다.
```py
>>> def train_transforms(example_batch):
... images = [aug_transforms(x.convert("RGB")) for x in example_batch["image"]]
... labels = [x for x in example_batch["annotation"]]
... inputs = image_processor(images, labels)
... return inputs
>>> def val_transforms(example_batch):
... images = [transforms(x.convert("RGB")) for x in example_batch["image"]]
... labels = [x for x in example_batch["annotation"]]
... inputs = image_processor(images, labels)
... return inputs
```
전체 데이터 집합에 전처리 변환을 적용하려면 🤗 Datasets [`~datasets.Dataset.set_transform`] 함수를 사용하세요.
즉시 변환이 적용되기 때문에 더 빠르고 디스크 공간을 덜 차지합니다:
```py
>>> train_ds.set_transform(train_transforms)
>>> test_ds.set_transform(val_transforms)
```
</tf>
</frameworkcontent>
## 평가하기[[evaluate]]
훈련 중에 메트릭을 포함하면 모델의 성능을 평가하는 데 도움이 되는 경우가 많습니다. 🤗 [Evaluate](https://huggingface.co/docs/evaluate/index) 라이브러리를 사용하여 평가 방법을 빠르게 로드할 수 있습니다. 이 태스크에서는 [mean Intersection over Union](https://huggingface.co/spaces/evaluate-metric/accuracy) (IoU) 메트릭을 로드하세요 (메트릭을 로드하고 계산하는 방법에 대해 자세히 알아보려면 🤗 Evaluate [quick tour](https://huggingface.co/docs/evaluate/a_quick_tour)를 살펴보세요).
```py
>>> import evaluate
>>> metric = evaluate.load("mean_iou")
```
그런 다음 메트릭을 [`~evaluate.EvaluationModule.compute`]하는 함수를 만듭니다. 예측을 먼저 로짓으로 변환한 다음, 레이블의 크기에 맞게 모양을 다시 지정해야 [`~evaluate.EvaluationModule.compute`]를 호출할 수 있습니다:
<frameworkcontent>
<pt>
```py
>>> import numpy as np
>>> import torch
>>> from torch import nn
>>> def compute_metrics(eval_pred):
... with torch.no_grad():
... logits, labels = eval_pred
... logits_tensor = torch.from_numpy(logits)
... logits_tensor = nn.functional.interpolate(
... logits_tensor,
... size=labels.shape[-2:],
... mode="bilinear",
... align_corners=False,
... ).argmax(dim=1)
... pred_labels = logits_tensor.detach().cpu().numpy()
... metrics = metric.compute(
... predictions=pred_labels,
... references=labels,
... num_labels=num_labels,
... ignore_index=255,
... reduce_labels=False,
... )
... for key, value in metrics.items():
... if isinstance(value, np.ndarray):
... metrics[key] = value.tolist()
... return metrics
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
```py
>>> def compute_metrics(eval_pred):
... logits, labels = eval_pred
... logits = tf.transpose(logits, perm=[0, 2, 3, 1])
... logits_resized = tf.image.resize(
... logits,
... size=tf.shape(labels)[1:],
... method="bilinear",
... )
... pred_labels = tf.argmax(logits_resized, axis=-1)
... metrics = metric.compute(
... predictions=pred_labels,
... references=labels,
... num_labels=num_labels,
... ignore_index=-1,
... reduce_labels=image_processor.do_reduce_labels,
... )
... per_category_accuracy = metrics.pop("per_category_accuracy").tolist()
... per_category_iou = metrics.pop("per_category_iou").tolist()
... metrics.update({f"accuracy_{id2label[i]}": v for i, v in enumerate(per_category_accuracy)})
... metrics.update({f"iou_{id2label[i]}": v for i, v in enumerate(per_category_iou)})
... return {"val_" + k: v for k, v in metrics.items()}
```
</tf>
</frameworkcontent>
이제 `compute_metrics` 함수를 사용할 준비가 되었습니다. 트레이닝을 설정할 때 이 함수로 돌아가게 됩니다.
## 학습하기[[train]]
<frameworkcontent>
<pt>
<Tip>
만약 [`Trainer`]를 사용해 모델을 미세 조정하는 것에 익숙하지 않다면, [여기](../training#finetune-with-trainer)에서 기본 튜토리얼을 살펴보세요!
</Tip>
이제 모델 학습을 시작할 준비가 되었습니다! [`AutoModelForSemanticSegmentation`]로 SegFormer를 불러오고, 모델에 레이블 ID와 레이블 클래스 간의 매핑을 전달합니다:
```py
>>> from transformers import AutoModelForSemanticSegmentation, TrainingArguments, Trainer
>>> model = AutoModelForSemanticSegmentation.from_pretrained(checkpoint, id2label=id2label, label2id=label2id)
```
이제 세 단계만 남았습니다:
1. 학습 하이퍼파라미터를 [`TrainingArguments`]에 정의합니다. `image` 열이 삭제되기 때문에 사용하지 않는 열을 제거하지 않는 것이 중요합니다. `image` 열이 없으면 `pixel_values`을 생성할 수 없습니다. 이런 경우를 방지하려면 `remove_unused_columns=False`로 설정하세요! 유일하게 필요한 다른 매개변수는 모델을 저장할 위치를 지정하는 `output_dir`입니다. `push_to_hub=True`를 설정하여 이 모델을 Hub에 푸시합니다(모델을 업로드하려면 Hugging Face에 로그인해야 합니다). 각 에포크가 끝날 때마다 [`Trainer`]가 IoU 메트릭을 평가하고 학습 체크포인트를 저장합니다.
2. 모델, 데이터 세트, 토크나이저, 데이터 콜레이터, `compute_metrics` 함수와 함께 학습 인자를 [`Trainer`]에 전달하세요.
3. 모델을 미세 조정하기 위해 [`~Trainer.train`]를 호출하세요.
```py
>>> training_args = TrainingArguments(
... output_dir="segformer-b0-scene-parse-150",
... learning_rate=6e-5,
... num_train_epochs=50,
... per_device_train_batch_size=2,
... per_device_eval_batch_size=2,
... save_total_limit=3,
... eval_strategy="steps",
... save_strategy="steps",
... save_steps=20,
... eval_steps=20,
... logging_steps=1,
... eval_accumulation_steps=5,
... remove_unused_columns=False,
... push_to_hub=True,
... )
>>> trainer = Trainer(
... model=model,
... args=training_args,
... train_dataset=train_ds,
... eval_dataset=test_ds,
... compute_metrics=compute_metrics,
... )
>>> trainer.train()
```
학습이 완료되면, 누구나 모델을 사용할 수 있도록 [`~transformers.Trainer.push_to_hub`] 메서드를 사용해 Hub에 모델을 공유하세요:
```py
>>> trainer.push_to_hub()
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
<Tip>
Keras로 모델을 미세 조정하는 데 익숙하지 않은 경우, 먼저 [기본 튜토리얼](../training#train-a-tensorflow-model-with-keras)을 확인해보세요!
</Tip>
TensorFlow에서 모델을 미세 조정하려면 다음 단계를 따르세요:
1. 학습 하이퍼파라미터를 정의하고 옵티마이저와 학습률 스케쥴러를 설정하세요.
2. 사전 학습된 모델을 인스턴스화하세요.
3. 🤗 Dataset을 `tf.data.Dataset`로 변환하세요.
4. 모델을 컴파일하세요.
5. 콜백을 추가하여 메트릭을 계산하고 🤗 Hub에 모델을 업로드하세요.
6. `fit()` 메서드를 사용하여 훈련을 실행하세요.
하이퍼파라미터, 옵티마이저, 학습률 스케쥴러를 정의하는 것으로 시작하세요:
```py
>>> from transformers import create_optimizer
>>> batch_size = 2
>>> num_epochs = 50
>>> num_train_steps = len(train_ds) * num_epochs
>>> learning_rate = 6e-5
>>> weight_decay_rate = 0.01
>>> optimizer, lr_schedule = create_optimizer(
... init_lr=learning_rate,
... num_train_steps=num_train_steps,
... weight_decay_rate=weight_decay_rate,
... num_warmup_steps=0,
... )
```
그런 다음 레이블 매핑과 함께 [`TFAutoModelForSemanticSegmentation`]을 사용하여 SegFormer를 불러오고 옵티마이저로 컴파일합니다. 트랜스포머 모델은 모두 디폴트로 태스크 관련 손실 함수가 있으므로 원치 않으면 지정할 필요가 없습니다:
```py
>>> from transformers import TFAutoModelForSemanticSegmentation
>>> model = TFAutoModelForSemanticSegmentation.from_pretrained(
... checkpoint,
... id2label=id2label,
... label2id=label2id,
... )
>>> model.compile(optimizer=optimizer) # 손실 함수 인자가 없습니다!
```
[`~datasets.Dataset.to_tf_dataset`] 와 [`DefaultDataCollator`]를 사용해 데이터 세트를 `tf.data.Dataset` 포맷으로 변환하세요:
```py
>>> from transformers import DefaultDataCollator
>>> data_collator = DefaultDataCollator(return_tensors="tf")
>>> tf_train_dataset = train_ds.to_tf_dataset(
... columns=["pixel_values", "label"],
... shuffle=True,
... batch_size=batch_size,
... collate_fn=data_collator,
... )
>>> tf_eval_dataset = test_ds.to_tf_dataset(
... columns=["pixel_values", "label"],
... shuffle=True,
... batch_size=batch_size,
... collate_fn=data_collator,
... )
```
예측으로 정확도를 계산하고 모델을 🤗 Hub로 푸시하려면 [Keras callbacks](../main_classes/keras_callbacks)를 사용하세요. `compute_metrics` 함수를 [`KerasMetricCallback`]에 전달하고, 모델 업로드를 위해 [`PushToHubCallback`]를 사용하세요:
```py
>>> from transformers.keras_callbacks import KerasMetricCallback, PushToHubCallback
>>> metric_callback = KerasMetricCallback(
... metric_fn=compute_metrics, eval_dataset=tf_eval_dataset, batch_size=batch_size, label_cols=["labels"]
... )
>>> push_to_hub_callback = PushToHubCallback(output_dir="scene_segmentation", tokenizer=image_processor)
>>> callbacks = [metric_callback, push_to_hub_callback]
```
이제 모델을 훈련할 준비가 되었습니다! 훈련 및 검증 데이터 세트, 에포크 수와 함께 `fit()`을 호출하고, 콜백을 사용하여 모델을 미세 조정합니다:
```py
>>> model.fit(
... tf_train_dataset,
... validation_data=tf_eval_dataset,
... callbacks=callbacks,
... epochs=num_epochs,
... )
```
축하합니다! 모델을 미세 조정하고 🤗 Hub에 공유했습니다. 이제 추론에 사용할 수 있습니다!
</tf>
</frameworkcontent>
## 추론하기[[inference]]
이제 모델을 미세 조정했으니 추론에 사용할 수 있습니다!
추론할 이미지를 로드하세요:
```py
>>> image = ds[0]["image"]
>>> image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/semantic-seg-image.png" alt="Image of bedroom"/>
</div>
<frameworkcontent>
<pt>
추론을 위해 미세 조정한 모델을 시험해 보는 가장 간단한 방법은 [`pipeline`]에서 사용하는 것입니다. 모델을 사용하여 이미지 분할을 위한 `pipeline`을 인스턴스화하고 이미지를 전달합니다:
```py
>>> from transformers import pipeline
>>> segmenter = pipeline("image-segmentation", model="my_awesome_seg_model")
>>> segmenter(image)
[{'score': None,
'label': 'wall',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062690>},
{'score': None,
'label': 'sky',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062A50>},
{'score': None,
'label': 'floor',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062B50>},
{'score': None,
'label': 'ceiling',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062A10>},
{'score': None,
'label': 'bed ',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062E90>},
{'score': None,
'label': 'windowpane',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062390>},
{'score': None,
'label': 'cabinet',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062550>},
{'score': None,
'label': 'chair',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062D90>},
{'score': None,
'label': 'armchair',
'mask': <PIL.Image.Image image mode=L size=640x427 at 0x7FD5B2062E10>}]
```
원하는 경우 `pipeline`의 결과를 수동으로 복제할 수도 있습니다. 이미지 프로세서로 이미지를 처리하고 `pixel_values`을 GPU에 배치합니다:
```py
>>> device = torch.device("cuda" if torch.cuda.is_available() else "cpu") # 가능하다면 GPU를 사용하고, 그렇지 않다면 CPU를 사용하세요
>>> encoding = image_processor(image, return_tensors="pt")
>>> pixel_values = encoding.pixel_values.to(device)
```
모델에 입력을 전달하고 `logits`를 반환합니다:
```py
>>> outputs = model(pixel_values=pixel_values)
>>> logits = outputs.logits.cpu()
```
그런 다음 로짓의 크기를 원본 이미지 크기로 다시 조정합니다:
```py
>>> upsampled_logits = nn.functional.interpolate(
... logits,
... size=image.size[::-1],
... mode="bilinear",
... align_corners=False,
... )
>>> pred_seg = upsampled_logits.argmax(dim=1)[0]
```
</pt>
</frameworkcontent>
<frameworkcontent>
<tf>
이미지 프로세서를 로드하여 이미지를 전처리하고 입력을 TensorFlow 텐서로 반환합니다:
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("MariaK/scene_segmentation")
>>> inputs = image_processor(image, return_tensors="tf")
```
모델에 입력을 전달하고 `logits`를 반환합니다:
```py
>>> from transformers import TFAutoModelForSemanticSegmentation
>>> model = TFAutoModelForSemanticSegmentation.from_pretrained("MariaK/scene_segmentation")
>>> logits = model(**inputs).logits
```
그런 다음 로그를 원본 이미지 크기로 재조정하고 클래스 차원에 argmax를 적용합니다:
```py
>>> logits = tf.transpose(logits, [0, 2, 3, 1])
>>> upsampled_logits = tf.image.resize(
... logits,
... # `image.size`가 너비와 높이를 반환하기 때문에 `image`의 모양을 반전시킵니다
... image.size[::-1],
... )
>>> pred_seg = tf.math.argmax(upsampled_logits, axis=-1)[0]
```
</tf>
</frameworkcontent>
결과를 시각화하려면 [dataset color palette](https://github.com/tensorflow/models/blob/3f1ca33afe3c1631b733ea7e40c294273b9e406d/research/deeplab/utils/get_dataset_colormap.py#L51)를 각 클래스를 RGB 값에 매핑하는 `ade_palette()`로 로드합니다. 그런 다음 이미지와 예측된 분할 지도(segmentation map)을 결합하여 구성할 수 있습니다:
```py
>>> import matplotlib.pyplot as plt
>>> import numpy as np
>>> color_seg = np.zeros((pred_seg.shape[0], pred_seg.shape[1], 3), dtype=np.uint8)
>>> palette = np.array(ade_palette())
>>> for label, color in enumerate(palette):
... color_seg[pred_seg == label, :] = color
>>> color_seg = color_seg[..., ::-1] # BGR로 변환
>>> img = np.array(image) * 0.5 + color_seg * 0.5 # 분할 지도으로 이미지 구성
>>> img = img.astype(np.uint8)
>>> plt.figure(figsize=(15, 10))
>>> plt.imshow(img)
>>> plt.show()
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/semantic-seg-preds.png" alt="Image of bedroom overlaid with segmentation map"/>
</div>
|
transformers/docs/source/ko/tasks/semantic_segmentation.md/0
|
{
"file_path": "transformers/docs/source/ko/tasks/semantic_segmentation.md",
"repo_id": "transformers",
"token_count": 14041
}
| 301
|
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Tour rápido
[[open-in-colab]]
Comece a trabalhar com 🤗 Transformers! Comece usando [`pipeline`] para rápida inferência e facilmente carregue um modelo pré-treinado e um tokenizer com [AutoClass](./model_doc/auto) para resolver tarefas de texto, visão ou áudio.
<Tip>
Todos os exemplos de código apresentados na documentação têm um botão no canto superior direito para escolher se você deseja ocultar ou mostrar o código no Pytorch ou no TensorFlow. Caso contrário, é esperado que funcione para ambos back-ends sem nenhuma alteração.
</Tip>
## Pipeline
[`pipeline`] é a maneira mais fácil de usar um modelo pré-treinado para uma dada tarefa.
<Youtube id="tiZFewofSLM"/>
A [`pipeline`] apoia diversas tarefas fora da caixa:
**Texto**:
* Análise sentimental: classifica a polaridade de um texto.
* Geração de texto (em Inglês): gera texto a partir de uma entrada.
* Reconhecimento de entidade mencionada: legenda cada palavra com uma classe que a representa (pessoa, data, local, etc...)
* Respostas: extrai uma resposta dado algum contexto e uma questão
* Máscara de preenchimento: preenche o espaço, dado um texto com máscaras de palavras.
* Sumarização: gera o resumo de um texto longo ou documento.
* Tradução: traduz texto para outra língua.
* Extração de características: cria um tensor que representa o texto.
**Imagem**:
* Classificação de imagens: classifica uma imagem.
* Segmentação de imagem: classifica cada pixel da imagem.
* Detecção de objetos: detecta objetos em uma imagem.
**Audio**:
* Classficação de áudio: legenda um trecho de áudio fornecido.
* Reconhecimento de fala automático: transcreve audio em texto.
<Tip>
Para mais detalhes sobre a [`pipeline`] e tarefas associadas, siga a documentação [aqui](./main_classes/pipelines).
</Tip>
### Uso da pipeline
No exemplo a seguir, você usará [`pipeline`] para análise sentimental.
Instale as seguintes dependências se você ainda não o fez:
<frameworkcontent>
<pt>
```bash
pip install torch
```
</pt>
<tf>
```bash
pip install tensorflow
```
</tf>
</frameworkcontent>
Importe [`pipeline`] e especifique a tarefa que deseja completar:
```py
>>> from transformers import pipeline
>>> classifier = pipeline("sentiment-analysis")
```
A pipeline baixa and armazena um [modelo pré-treinado](https://huggingface.co/distilbert/distilbert-base-uncased-finetuned-sst-2-english) padrão e tokenizer para análise sentimental. Agora você pode usar `classifier` no texto alvo:
```py
>>> classifier("We are very happy to show you the 🤗 Transformers library.")
[{'label': 'POSITIVE', 'score': 0.9998}]
```
Para mais de uma sentença, passe uma lista para a [`pipeline`], a qual retornará uma lista de dicionários:
```py
>>> results = classifier(["We are very happy to show you the 🤗 Transformers library.", "We hope you don't hate it."])
>>> for result in results:
... print(f"label: {result['label']}, with score: {round(result['score'], 4)}")
label: POSITIVE, with score: 0.9998
label: NEGATIVE, with score: 0.5309
```
A [`pipeline`] também pode iterar sobre um Dataset inteiro. Comece instalando a biblioteca de [🤗 Datasets](https://huggingface.co/docs/datasets/):
```bash
pip install datasets
```
Crie uma [`pipeline`] com a tarefa que deseja resolver e o modelo que deseja usar.
```py
>>> import torch
>>> from transformers import pipeline
>>> speech_recognizer = pipeline("automatic-speech-recognition", model="facebook/wav2vec2-base-960h")
```
A seguir, carregue uma base de dados (confira a 🤗 [Iniciação em Datasets](https://huggingface.co/docs/datasets/quickstart) para mais detalhes) que você gostaria de iterar sobre. Por exemplo, vamos carregar o dataset [MInDS-14](https://huggingface.co/datasets/PolyAI/minds14):
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("PolyAI/minds14", name="en-US", split="train") # doctest: +IGNORE_RESULT
```
Precisamos garantir que a taxa de amostragem do conjunto de dados corresponda à taxa de amostragem em que o facebook/wav2vec2-base-960h foi treinado.
```py
>>> dataset = dataset.cast_column("audio", Audio(sampling_rate=speech_recognizer.feature_extractor.sampling_rate))
```
Os arquivos de áudio são carregados e re-amostrados automaticamente ao chamar a coluna `"audio"`.
Vamos extrair as arrays de formas de onda originais das primeiras 4 amostras e passá-las como uma lista para o pipeline:
```py
>>> result = speech_recognizer(dataset[:4]["audio"])
>>> print([d["text"] for d in result])
['I WOULD LIKE TO SET UP A JOINT ACCOUNT WITH MY PARTNER HOW DO I PROCEED WITH DOING THAT', "FONDERING HOW I'D SET UP A JOIN TO HET WITH MY WIFE AND WHERE THE AP MIGHT BE", "I I'D LIKE TOY SET UP A JOINT ACCOUNT WITH MY PARTNER I'M NOT SEEING THE OPTION TO DO IT ON THE APSO I CALLED IN TO GET SOME HELP CAN I JUST DO IT OVER THE PHONE WITH YOU AND GIVE YOU THE INFORMATION OR SHOULD I DO IT IN THE AP AND I'M MISSING SOMETHING UQUETTE HAD PREFERRED TO JUST DO IT OVER THE PHONE OF POSSIBLE THINGS", 'HOW DO I TURN A JOIN A COUNT']
```
Para um conjunto de dados maior onde as entradas são maiores (como em fala ou visão), será necessário passar um gerador em vez de uma lista que carregue todas as entradas na memória. Consulte a [documentação do pipeline](./main_classes/pipelines) para mais informações.
### Use outro modelo e tokenizer na pipeline
A [`pipeline`] pode acomodar qualquer modelo do [Model Hub](https://huggingface.co/models), facilitando sua adaptação para outros casos de uso. Por exemplo, se você quiser um modelo capaz de lidar com texto em francês, use as tags no Model Hub para filtrar um modelo apropriado. O principal resultado filtrado retorna um [modelo BERT](https://huggingface.co/nlptown/bert-base-multilingual-uncased-sentiment) bilíngue ajustado para análise de sentimentos. Ótimo, vamos usar este modelo!
```py
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
```
<frameworkcontent>
<pt>
Use o [`AutoModelForSequenceClassification`] e [`AutoTokenizer`] para carregar o modelo pré-treinado e seu tokenizer associado (mais em `AutoClass` abaixo):
```py
>>> from transformers import AutoTokenizer, AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained(model_name)
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
</pt>
<tf>
Use o [`TFAutoModelForSequenceClassification`] and [`AutoTokenizer`] para carregar o modelo pré-treinado e o tokenizer associado (mais em `TFAutoClass` abaixo):
```py
>>> from transformers import AutoTokenizer, TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained(model_name)
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
</tf>
</frameworkcontent>
Então você pode especificar o modelo e o tokenizador na [`pipeline`] e aplicar o `classifier` no seu texto alvo:
```py
>>> classifier = pipeline("sentiment-analysis", model=model, tokenizer=tokenizer)
>>> classifier("Nous sommes très heureux de vous présenter la bibliothèque 🤗 Transformers.")
[{'label': '5 stars', 'score': 0.7273}]
```
Se você não conseguir achar um modelo para o seu caso de uso, precisará usar fine-tune em um modelo pré-treinado nos seus dados. Veja nosso [tutorial de fine-tuning](./training) para descobrir como. Finalmente, depois que você tiver usado esse processo em seu modelo, considere compartilhá-lo conosco (veja o tutorial [aqui](./model_sharing)) na plataforma Model Hub afim de democratizar NLP! 🤗
## AutoClass
<Youtube id="AhChOFRegn4"/>
Por baixo dos panos, as classes [`AutoModelForSequenceClassification`] e [`AutoTokenizer`] trabalham juntas para fortificar o [`pipeline`]. Um [AutoClass](./model_doc/auto) é um atalho que automaticamente recupera a arquitetura de um modelo pré-treinado a partir de seu nome ou caminho. Basta selecionar a `AutoClass` apropriada para sua tarefa e seu tokenizer associado com [`AutoTokenizer`].
Vamos voltar ao nosso exemplo e ver como você pode usar a `AutoClass` para replicar os resultados do [`pipeline`].
### AutoTokenizer
Um tokenizer é responsável por pré-processar o texto em um formato que seja compreensível para o modelo. Primeiro, o tokenizer dividirá o texto em palavras chamadas *tokens*. Existem várias regras que regem o processo de tokenização, incluindo como dividir uma palavra e em que nível (saiba mais sobre tokenização [aqui](./tokenizer_summary)). A coisa mais importante a lembrar, porém, é que você precisa instanciar o tokenizer com o mesmo nome do modelo para garantir que está usando as mesmas regras de tokenização com as quais um modelo foi pré-treinado.
Carregue um tokenizer com [`AutoTokenizer`]:
```py
>>> from transformers import AutoTokenizer
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
Em seguida, o tokenizer converte os tokens em números para construir um tensor como entrada para o modelo. Isso é conhecido como o *vocabulário* do modelo.
Passe o texto para o tokenizer:
```py
>>> encoding = tokenizer("We are very happy to show you the 🤗 Transformers library.")
>>> print(encoding)
{'input_ids': [101, 11312, 10320, 12495, 19308, 10114, 11391, 10855, 10103, 100, 58263, 13299, 119, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
O tokenizer retornará um dicionário contendo:
* [input_ids](./glossary#input-ids): representações numéricas de seus tokens.
* [atttention_mask](.glossary#attention-mask): indica quais tokens devem ser atendidos.
Assim como o [`pipeline`], o tokenizer aceitará uma lista de entradas. Além disso, o tokenizer também pode preencher e truncar o texto para retornar um lote com comprimento uniforme:
<frameworkcontent>
<pt>
```py
>>> pt_batch = tokenizer(
... ["We are very happy to show you the 🤗 transformers library.", "We hope you don't hate it."],
... padding=True,
... truncation=True,
... max_length=512,
... return_tensors="pt",
... )
```
</pt>
<tf>
```py
>>> tf_batch = tokenizer(
... ["We are very happy to show you the 🤗 Transformers library.", "We hope you don't hate it."],
... padding=True,
... truncation=True,
... max_length=512,
... return_tensors="tf",
... )
```
</tf>
</frameworkcontent>
Leia o tutorial de [pré-processamento](./pré-processamento) para obter mais detalhes sobre tokenização.
### AutoModel
<frameworkcontent>
<pt>
🤗 Transformers fornecem uma maneira simples e unificada de carregar instâncias pré-treinadas. Isso significa que você pode carregar um [`AutoModel`] como carregaria um [`AutoTokenizer`]. A única diferença é selecionar o [`AutoModel`] correto para a tarefa. Como você está fazendo classificação de texto ou sequência, carregue [`AutoModelForSequenceClassification`]:
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> pt_model = AutoModelForSequenceClassification.from_pretrained(model_name)
```
<Tip>
Veja o [sumário de tarefas](./task_summary) para qual classe de [`AutoModel`] usar para cada tarefa.
</Tip>
Agora você pode passar seu grupo de entradas pré-processadas diretamente para o modelo. Você apenas tem que descompactar o dicionário usando `**`:
```py
>>> pt_outputs = pt_model(**pt_batch)
```
O modelo gera as ativações finais no atributo `logits`. Aplique a função softmax aos `logits` para recuperar as probabilidades:
```py
>>> from torch import nn
>>> pt_predictions = nn.functional.softmax(pt_outputs.logits, dim=-1)
>>> print(pt_predictions)
tensor([[0.0021, 0.0018, 0.0115, 0.2121, 0.7725],
[0.2084, 0.1826, 0.1969, 0.1755, 0.2365]], grad_fn=<SoftmaxBackward0>)
```
</pt>
<tf>
🤗 Transformers fornecem uma maneira simples e unificada de carregar instâncias pré-treinadas. Isso significa que você pode carregar um [`TFAutoModel`] como carregaria um [`AutoTokenizer`]. A única diferença é selecionar o [`TFAutoModel`] correto para a tarefa. Como você está fazendo classificação de texto ou sequência, carregue [`TFAutoModelForSequenceClassification`]:
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained(model_name)
```
<Tip>
Veja o [sumário de tarefas](./task_summary) para qual classe de [`AutoModel`] usar para cada tarefa.
</Tip>
Agora você pode passar seu grupo de entradas pré-processadas diretamente para o modelo através da passagem de chaves de dicionários ao tensor.
```py
>>> tf_outputs = tf_model(tf_batch)
```
O modelo gera as ativações finais no atributo `logits`. Aplique a função softmax aos `logits` para recuperar as probabilidades:
```py
>>> import tensorflow as tf
>>> tf_predictions = tf.nn.softmax(tf_outputs.logits, axis=-1)
>>> tf_predictions # doctest: +IGNORE_RESULT
```
</tf>
</frameworkcontent>
<Tip>
Todos os modelos de 🤗 Transformers (PyTorch ou TensorFlow) geram tensores *antes* da função de ativação final (como softmax) pois essa função algumas vezes é fundida com a perda.
</Tip>
Os modelos são um standard [`torch.nn.Module`](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) ou um [`tf.keras.Model`](https://www.tensorflow.org/api_docs/python/tf/keras/Model) para que você possa usá-los em seu loop de treinamento habitual. No entanto, para facilitar as coisas, 🤗 Transformers fornece uma classe [`Trainer`] para PyTorch que adiciona funcionalidade para treinamento distribuído, precisão mista e muito mais. Para o TensorFlow, você pode usar o método `fit` de [Keras](https://keras.io/). Consulte o [tutorial de treinamento](./training) para obter mais detalhes.
<Tip>
As saídas do modelo 🤗 Transformers são classes de dados especiais para que seus atributos sejam preenchidos automaticamente em um IDE.
As saídas do modelo também se comportam como uma tupla ou um dicionário (por exemplo, você pode indexar com um inteiro, uma parte ou uma string), caso em que os atributos `None` são ignorados.
</Tip>
### Salvar um modelo
<frameworkcontent>
<pt>
Uma vez que seu modelo estiver afinado, você pode salvá-lo com seu Tokenizer usando [`PreTrainedModel.save_pretrained`]:
```py
>>> pt_save_directory = "./pt_save_pretrained"
>>> tokenizer.save_pretrained(pt_save_directory) # doctest: +IGNORE_RESULT
>>> pt_model.save_pretrained(pt_save_directory)
```
Quando você estiver pronto para usá-lo novamente, recarregue com [`PreTrainedModel.from_pretrained`]:
```py
>>> pt_model = AutoModelForSequenceClassification.from_pretrained("./pt_save_pretrained")
```
</pt>
<tf>
Uma vez que seu modelo estiver afinado, você pode salvá-lo com seu Tokenizer usando [`TFPreTrainedModel.save_pretrained`]:
```py
>>> tf_save_directory = "./tf_save_pretrained"
>>> tokenizer.save_pretrained(tf_save_directory) # doctest: +IGNORE_RESULT
>>> tf_model.save_pretrained(tf_save_directory)
```
Quando você estiver pronto para usá-lo novamente, recarregue com [`TFPreTrainedModel.from_pretrained`]
```py
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained("./tf_save_pretrained")
```
</tf>
</frameworkcontent>
Um recurso particularmente interessante dos 🤗 Transformers é a capacidade de salvar um modelo e recarregá-lo como um modelo PyTorch ou TensorFlow. Use `from_pt` ou `from_tf` para converter o modelo de um framework para outro:
<frameworkcontent>
<pt>
```py
>>> from transformers import AutoModel
>>> tokenizer = AutoTokenizer.from_pretrained(tf_save_directory)
>>> pt_model = AutoModelForSequenceClassification.from_pretrained(tf_save_directory, from_tf=True)
```
</pt>
<tf>
```py
>>> from transformers import TFAutoModel
>>> tokenizer = AutoTokenizer.from_pretrained(pt_save_directory)
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained(pt_save_directory, from_pt=True)
```
</tf>
</frameworkcontent>
|
transformers/docs/source/pt/quicktour.md/0
|
{
"file_path": "transformers/docs/source/pt/quicktour.md",
"repo_id": "transformers",
"token_count": 6110
}
| 302
|
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 聊天模型的模板
## 介绍
LLM 的一个常见应用场景是聊天。在聊天上下文中，不再是连续的文本字符串构成的语句（不同于标准的语言模型），
聊天模型由一条或多条消息组成的对话组成，每条消息都有一个“用户”或“助手”等 **角色**，还包括消息文本。
与`Tokenizer`类似，不同的模型对聊天的输入格式要求也不同。这就是我们添加**聊天模板**作为一个功能的原因。
聊天模板是`Tokenizer`的一部分。用来把问答的对话内容转换为模型的输入`prompt`。
让我们通过一个快速的示例来具体说明，使用`BlenderBot`模型。
BlenderBot有一个非常简单的默认模板，主要是在对话轮之间添加空格：
```python
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("facebook/blenderbot-400M-distill")
>>> chat = [
... {"role": "user", "content": "Hello, how are you?"},
... {"role": "assistant", "content": "I'm doing great. How can I help you today?"},
... {"role": "user", "content": "I'd like to show off how chat templating works!"},
... ]
>>> tokenizer.apply_chat_template(chat, tokenize=False)
" Hello, how are you? I'm doing great. How can I help you today? I'd like to show off how chat templating works!</s>"
```
注意，整个聊天对话内容被压缩成了一整个字符串。如果我们使用默认设置的`tokenize=True`，那么该字符串也将被tokenized处理。
不过，为了看到更复杂的模板实际运行，让我们使用`mistralai/Mistral-7B-Instruct-v0.1`模型。
```python
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("mistralai/Mistral-7B-Instruct-v0.1")
>>> chat = [
... {"role": "user", "content": "Hello, how are you?"},
... {"role": "assistant", "content": "I'm doing great. How can I help you today?"},
... {"role": "user", "content": "I'd like to show off how chat templating works!"},
... ]
>>> tokenizer.apply_chat_template(chat, tokenize=False)
"<s>[INST] Hello, how are you? [/INST]I'm doing great. How can I help you today?</s> [INST] I'd like to show off how chat templating works! [/INST]"
```
可以看到，这一次tokenizer已经添加了[INST]和[/INST]来表示用户消息的开始和结束。
Mistral-instruct是有使用这些token进行训练的，但BlenderBot没有。
## 我如何使用聊天模板？
正如您在上面的示例中所看到的，聊天模板非常容易使用。只需构建一系列带有`role`和`content`键的消息，
然后将其传递给[`~PreTrainedTokenizer.apply_chat_template`]方法。
另外，在将聊天模板用作模型预测的输入时，还建议使用`add_generation_prompt=True`来添加[generation prompt](#什么是generation-prompts)。
这是一个准备`model.generate()`的示例，使用`Zephyr`模型：
```python
from transformers import AutoModelForCausalLM, AutoTokenizer
checkpoint = "HuggingFaceH4/zephyr-7b-beta"
tokenizer = AutoTokenizer.from_pretrained(checkpoint)
model = AutoModelForCausalLM.from_pretrained(checkpoint) # You may want to use bfloat16 and/or move to GPU here
messages = [
{
"role": "system",
"content": "You are a friendly chatbot who always responds in the style of a pirate",
},
{"role": "user", "content": "How many helicopters can a human eat in one sitting?"},
]
tokenized_chat = tokenizer.apply_chat_template(messages, tokenize=True, add_generation_prompt=True, return_tensors="pt")
print(tokenizer.decode(tokenized_chat[0]))
```
这将生成Zephyr期望的输入格式的字符串。它看起来像这样：
```text
<|system|>
You are a friendly chatbot who always responds in the style of a pirate</s>
<|user|>
How many helicopters can a human eat in one sitting?</s>
<|assistant|>
```
现在我们已经按照`Zephyr`的要求传入prompt了，我们可以使用模型来生成对用户问题的回复：
```python
outputs = model.generate(tokenized_chat, max_new_tokens=128)
print(tokenizer.decode(outputs[0]))
```
输出结果是：
```text
<|system|>
You are a friendly chatbot who always responds in the style of a pirate</s>
<|user|>
How many helicopters can a human eat in one sitting?</s>
<|assistant|>
Matey, I'm afraid I must inform ye that humans cannot eat helicopters. Helicopters are not food, they are flying machines. Food is meant to be eaten, like a hearty plate o' grog, a savory bowl o' stew, or a delicious loaf o' bread. But helicopters, they be for transportin' and movin' around, not for eatin'. So, I'd say none, me hearties. None at all.
```
啊，原来这么容易！
## 有自动化的聊天`pipeline`吗？
有的，[`TextGenerationPipeline`]。这个`pipeline`的设计是为了方便使用聊天模型。让我们再试一次 Zephyr 的例子，但这次使用`pipeline`：
```python
from transformers import pipeline
pipe = pipeline("text-generation", "HuggingFaceH4/zephyr-7b-beta")
messages = [
{
"role": "system",
"content": "You are a friendly chatbot who always responds in the style of a pirate",
},
{"role": "user", "content": "How many helicopters can a human eat in one sitting?"},
]
print(pipe(messages, max_new_tokens=256)['generated_text'][-1])
```
```text
{'role': 'assistant', 'content': "Matey, I'm afraid I must inform ye that humans cannot eat helicopters. Helicopters are not food, they are flying machines. Food is meant to be eaten, like a hearty plate o' grog, a savory bowl o' stew, or a delicious loaf o' bread. But helicopters, they be for transportin' and movin' around, not for eatin'. So, I'd say none, me hearties. None at all."}
```
[`TextGenerationPipeline`]将负责处理所有的`tokenized`并调用`apply_chat_template`，一旦模型有了聊天模板，您只需要初始化pipeline并传递消息列表！
## 什么是"generation prompts"?
您可能已经注意到`apply_chat_template`方法有一个`add_generation_prompt`参数。
这个参数告诉模板添加模型开始答复的标记。例如，考虑以下对话：
```python
messages = [
{"role": "user", "content": "Hi there!"},
{"role": "assistant", "content": "Nice to meet you!"},
{"role": "user", "content": "Can I ask a question?"}
]
```
这是`add_generation_prompt=False`的结果，使用ChatML模板：
```python
tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=False)
"""<|im_start|>user
Hi there!<|im_end|>
<|im_start|>assistant
Nice to meet you!<|im_end|>
<|im_start|>user
Can I ask a question?<|im_end|>
"""
```
下面这是`add_generation_prompt=True`的结果：
```python
tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
"""<|im_start|>user
Hi there!<|im_end|>
<|im_start|>assistant
Nice to meet you!<|im_end|>
<|im_start|>user
Can I ask a question?<|im_end|>
<|im_start|>assistant
"""
```
这一次我们添加了模型开始答复的标记。这可以确保模型生成文本时只会给出答复，而不会做出意外的行为，比如继续用户的消息。
记住，聊天模型只是语言模型，它们被训练来继续文本，而聊天对它们来说只是一种特殊的文本！
你需要用适当的控制标记来引导它们，让它们知道自己应该做什么。
并非所有模型都需要生成提示。一些模型，如BlenderBot和LLaMA，在模型回复之前没有任何特殊标记。
在这些情况下，`add_generation_prompt`参数将不起作用。`add_generation_prompt`参数取决于你所使用的模板。
## 我可以在训练中使用聊天模板吗？
可以！我们建议您将聊天模板应用为数据集的预处理步骤。之后，您可以像进行任何其他语言模型训练任务一样继续。
在训练时，通常应该设置`add_generation_prompt=False`，因为添加的助手标记在训练过程中并不会有帮助。
让我们看一个例子：
```python
from transformers import AutoTokenizer
from datasets import Dataset
tokenizer = AutoTokenizer.from_pretrained("HuggingFaceH4/zephyr-7b-beta")
chat1 = [
{"role": "user", "content": "Which is bigger, the moon or the sun?"},
{"role": "assistant", "content": "The sun."}
]
chat2 = [
{"role": "user", "content": "Which is bigger, a virus or a bacterium?"},
{"role": "assistant", "content": "A bacterium."}
]
dataset = Dataset.from_dict({"chat": [chat1, chat2]})
dataset = dataset.map(lambda x: {"formatted_chat": tokenizer.apply_chat_template(x["chat"], tokenize=False, add_generation_prompt=False)})
print(dataset['formatted_chat'][0])
```
结果是：
```text
<|user|>
Which is bigger, the moon or the sun?</s>
<|assistant|>
The sun.</s>
```
这样，后面你可以使用`formatted_chat`列，跟标准语言建模任务中一样训练即可。
## 高级：聊天模板是如何工作的？
模型的聊天模板存储在`tokenizer.chat_template`属性上。如果没有设置，则将使用该模型的默认模板。
让我们来看看`BlenderBot`的模板：
```python
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("facebook/blenderbot-400M-distill")
>>> tokenizer.chat_template
"{% for message in messages %}{% if message['role'] == 'user' %}{{ ' ' }}{% endif %}{{ message['content'] }}{% if not loop.last %}{{ ' ' }}{% endif %}{% endfor %}{{ eos_token }}"
```
这看着有点复杂。让我们添加一些换行和缩进，使其更易读。
请注意，默认情况下忽略每个块后的第一个换行以及块之前的任何前导空格，
使用Jinja的`trim_blocks`和`lstrip_blocks`标签。
这里，请注意空格的使用。我们强烈建议您仔细检查模板是否打印了多余的空格！
```
{% for message in messages %}
{% if message['role'] == 'user' %}
{{ ' ' }}
{% endif %}
{{ message['content'] }}
{% if not loop.last %}
{{ ' ' }}
{% endif %}
{% endfor %}
{{ eos_token }}
```
如果你之前不了解[Jinja template](https://jinja.palletsprojects.com/en/3.1.x/templates/)。
Jinja是一种模板语言，允许你编写简单的代码来生成文本。
在许多方面，代码和语法类似于Python。在纯Python中，这个模板看起来会像这样：
```python
for idx, message in enumerate(messages):
if message['role'] == 'user':
print(' ')
print(message['content'])
if not idx == len(messages) - 1: # Check for the last message in the conversation
print(' ')
print(eos_token)
```
这里使用Jinja模板处理如下三步：
1. 对于每条消息，如果消息是用户消息，则在其前面添加一个空格，否则不打印任何内容
2. 添加消息内容
3. 如果消息不是最后一条，请在其后添加两个空格。在最后一条消息之后，打印`EOS`。
这是一个简单的模板，它不添加任何控制tokens，也不支持`system`消息（常用于指导模型在后续对话中如何表现）。
但 Jinja 给了你很大的灵活性来做这些事情！让我们看一个 Jinja 模板，
它可以实现类似于LLaMA的prompt输入（请注意，真正的LLaMA模板包括`system`消息，请不要在实际代码中使用这个简单模板！）
```
{% for message in messages %}
{% if message['role'] == 'user' %}
{{ bos_token + '[INST] ' + message['content'] + ' [/INST]' }}
{% elif message['role'] == 'system' %}
{{ '<<SYS>>\\n' + message['content'] + '\\n<</SYS>>\\n\\n' }}
{% elif message['role'] == 'assistant' %}
{{ ' ' + message['content'] + ' ' + eos_token }}
{% endif %}
{% endfor %}
```
这里稍微看一下，就能明白这个模板的作用：它根据每条消息的“角色”添加对应的消息。
`user`、`assistant`、`system`的消息需要分别处理，因为它们代表不同的角色输入。
## 高级：编辑聊天模板
### 如何创建聊天模板？
很简单，你只需编写一个jinja模板并设置`tokenizer.chat_template`。你也可以从一个现有模板开始，只需要简单编辑便可以！
例如，我们可以采用上面的LLaMA模板，并在助手消息中添加"[ASST]"和"[/ASST]"：
```
{% for message in messages %}
{% if message['role'] == 'user' %}
{{ bos_token + '[INST] ' + message['content'].strip() + ' [/INST]' }}
{% elif message['role'] == 'system' %}
{{ '<<SYS>>\\n' + message['content'].strip() + '\\n<</SYS>>\\n\\n' }}
{% elif message['role'] == 'assistant' %}
{{ '[ASST] ' + message['content'] + ' [/ASST]' + eos_token }}
{% endif %}
{% endfor %}
```
现在，只需设置`tokenizer.chat_template`属性。下次使用[`~PreTrainedTokenizer.apply_chat_template`]时，它将使用您的新模板！
此属性将保存在`tokenizer_config.json`文件中，因此您可以使用[`~utils.PushToHubMixin.push_to_hub`]将新模板上传到 Hub，
这样每个人都可以使用你模型的模板！
```python
template = tokenizer.chat_template
template = template.replace("SYS", "SYSTEM") # Change the system token
tokenizer.chat_template = template # Set the new template
tokenizer.push_to_hub("model_name") # Upload your new template to the Hub!
```
由于[`~PreTrainedTokenizer.apply_chat_template`]方法是由[`TextGenerationPipeline`]类调用，
因此一旦你设置了聊天模板，您的模型将自动与[`TextGenerationPipeline`]兼容。
### “默认”模板是什么？
在引入聊天模板（chat_template）之前，聊天prompt是在模型中通过硬编码处理的。为了向前兼容，我们保留了这种硬编码处理聊天prompt的方法。
如果一个模型没有设置聊天模板，但其模型有默认模板，`TextGenerationPipeline`类和`apply_chat_template`等方法将使用该模型的聊天模板。
您可以通过检查`tokenizer.default_chat_template`属性来查找`tokenizer`的默认模板。
这是我们纯粹为了向前兼容性而做的事情，以避免破坏任何现有的工作流程。即使默认的聊天模板适用于您的模型，
我们强烈建议通过显式设置`chat_template`属性来覆盖默认模板，以便向用户清楚地表明您的模型已经正确的配置了聊天模板，
并且为了未来防范默认模板被修改或弃用的情况。
### 我应该使用哪个模板？
在为已经训练过的聊天模型设置模板时，您应确保模板与模型在训练期间看到的消息格式完全匹配，否则可能会导致性能下降。
即使您继续对模型进行训练，也应保持聊天模板不变，这样可能会获得最佳性能。
这与`tokenization`非常类似，在推断时，你选用跟训练时一样的`tokenization`，通常会获得最佳性能。
如果您从头开始训练模型，或者在微调基础语言模型进行聊天时，您有很大的自由选择适当的模板！
LLMs足够聪明，可以学会处理许多不同的输入格式。我们为没有特定类别模板的模型提供一个默认模板，该模板遵循
`ChatML` format格式要求，对于许多用例来说，
这是一个很好的、灵活的选择。
默认模板看起来像这样：
```
{% for message in messages %}
{{'<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n'}}
{% endfor %}
```
如果您喜欢这个模板，下面是一行代码的模板形式，它可以直接复制到您的代码中。这一行代码还包括了[generation prompts](#什么是"generation prompts"?)，
但请注意它不会添加`BOS`或`EOS`token。
如果您的模型需要这些token，它们不会被`apply_chat_template`自动添加，换句话说，文本的默认处理参数是`add_special_tokens=False`。
这是为了避免模板和`add_special_tokens`逻辑产生冲突，如果您的模型需要特殊tokens，请确保将它们添加到模板中！
```
tokenizer.chat_template = "{% if not add_generation_prompt is defined %}{% set add_generation_prompt = false %}{% endif %}{% for message in messages %}{{'<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n'}}{% endfor %}{% if add_generation_prompt %}{{ '<|im_start|>assistant\n' }}{% endif %}"
```
该模板将每条消息包装在`<|im_start|>`和`<|im_end|>`tokens里面，并将角色简单地写为字符串，这样可以灵活地训练角色。输出如下：
```text
<|im_start|>system
You are a helpful chatbot that will do its best not to say anything so stupid that people tweet about it.<|im_end|>
<|im_start|>user
How are you?<|im_end|>
<|im_start|>assistant
I'm doing great!<|im_end|>
```
`user`，`system`和`assistant`是对话助手模型的标准角色，如果您的模型要与[`TextGenerationPipeline`]兼容，我们建议你使用这些角色。
但您可以不局限于这些角色，模板非常灵活，任何字符串都可以成为角色。
### 如何添加聊天模板？
如果您有任何聊天模型，您应该设置它们的`tokenizer.chat_template`属性，并使用[`~PreTrainedTokenizer.apply_chat_template`]测试，
然后将更新后的`tokenizer`推送到 Hub。
即使您不是模型所有者，如果您正在使用一个空的聊天模板或者仍在使用默认的聊天模板，
请发起一个[pull request](https://huggingface.co/docs/hub/repositories-pull-requests-discussions)，以便正确设置该属性！
一旦属性设置完成，就完成了！`tokenizer.apply_chat_template`现在将在该模型中正常工作，
这意味着它也会自动支持在诸如`TextGenerationPipeline`的地方！
通过确保模型具有这一属性，我们可以确保整个社区都能充分利用开源模型的全部功能。
格式不匹配已经困扰这个领域并悄悄地损害了性能太久了，是时候结束它们了！
## 高级：模板写作技巧
如果你对Jinja不熟悉，我们通常发现编写聊天模板的最简单方法是先编写一个简短的Python脚本，按照你想要的方式格式化消息，然后将该脚本转换为模板。
请记住，模板处理程序将接收对话历史作为名为`messages`的变量。每条`message`都是一个带有两个键`role`和`content`的字典。
您可以在模板中像在Python中一样访问`messages`，这意味着您可以使用`{% for message in messages %}`进行循环，
或者例如使用`{{ messages[0] }}`访问单个消息。
您也可以使用以下提示将您的代码转换为Jinja：
### For循环
在Jinja中，for循环看起来像这样：
```
{% for message in messages %}
{{ message['content'] }}
{% endfor %}
```
请注意，`{{ expression block }}`中的内容将被打印到输出。您可以在表达式块中使用像`+`这样的运算符来组合字符串。
### If语句
Jinja中的if语句如下所示：
```
{% if message['role'] == 'user' %}
{{ message['content'] }}
{% endif %}
```
注意Jinja使用`{% endfor %}`和`{% endif %}`来表示`for`和`if`的结束。
### 特殊变量
在您的模板中，您将可以访问`messages`列表，但您还可以访问其他几个特殊变量。
这些包括特殊`token`，如`bos_token`和`eos_token`，以及我们上面讨论过的`add_generation_prompt`变量。
您还可以使用`loop`变量来访问有关当前循环迭代的信息，例如使用`{% if loop.last %}`来检查当前消息是否是对话中的最后一条消息。
以下是一个示例，如果`add_generation_prompt=True`需要在对话结束时添加`generate_prompt`：
```
{% if loop.last and add_generation_prompt %}
{{ bos_token + 'Assistant:\n' }}
{% endif %}
```
### 空格的注意事项
我们已经尽可能尝试让Jinja忽略除`{{ expressions }}`之外的空格。
然而，请注意Jinja是一个通用的模板引擎，它可能会将同一行文本块之间的空格视为重要，并将其打印到输出中。
我们**强烈**建议在上传模板之前检查一下，确保模板没有在不应该的地方打印额外的空格！
|
transformers/docs/source/zh/chat_templating.md/0
|
{
"file_path": "transformers/docs/source/zh/chat_templating.md",
"repo_id": "transformers",
"token_count": 11132
}
| 303
|
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 模型输出
所有模型的输出都是 [`~utils.ModelOutput`] 的子类的实例。这些是包含模型返回的所有信息的数据结构，但也可以用作元组或字典。
让我们看一个例子：
```python
from transformers import BertTokenizer, BertForSequenceClassification
import torch
tokenizer = BertTokenizer.from_pretrained("google-bert/bert-base-uncased")
model = BertForSequenceClassification.from_pretrained("google-bert/bert-base-uncased")
inputs = tokenizer("Hello, my dog is cute", return_tensors="pt")
labels = torch.tensor([1]).unsqueeze(0) # Batch size 1
outputs = model(**inputs, labels=labels)
```
`outputs` 对象是 [`~modeling_outputs.SequenceClassifierOutput`]，如下面该类的文档中所示，它表示它有一个可选的 `loss`，一个 `logits`，一个可选的 `hidden_states` 和一个可选的 `attentions` 属性。在这里，我们有 `loss`，因为我们传递了 `labels`，但我们没有 `hidden_states` 和 `attentions`，因为我们没有传递 `output_hidden_states=True` 或 `output_attentions=True`。
<Tip>
当传递 `output_hidden_states=True` 时，您可能希望 `outputs.hidden_states[-1]` 与 `outputs.last_hidden_states` 完全匹配。然而，这并不总是成立。一些模型在返回最后的 hidden state时对其应用归一化或其他后续处理。
</Tip>
您可以像往常一样访问每个属性，如果模型未返回该属性，您将得到 `None`。在这里，例如，`outputs.loss` 是模型计算的损失，而 `outputs.attentions` 是 `None`。
当将我们的 `outputs` 对象视为元组时，它仅考虑那些没有 `None` 值的属性。例如这里它有两个元素，`loss` 和 `logits`，所以
```python
outputs[:2]
```
将返回元组 `(outputs.loss, outputs.logits)`。
将我们的 `outputs` 对象视为字典时，它仅考虑那些没有 `None` 值的属性。例如在这里它有两个键，分别是 `loss` 和 `logits`。
我们在这里记录了被多个类型模型使用的通用模型输出。特定输出类型在其相应的模型页面上有文档。
## ModelOutput
[[autodoc]] utils.ModelOutput
- to_tuple
## BaseModelOutput
[[autodoc]] modeling_outputs.BaseModelOutput
## BaseModelOutputWithPooling
[[autodoc]] modeling_outputs.BaseModelOutputWithPooling
## BaseModelOutputWithCrossAttentions
[[autodoc]] modeling_outputs.BaseModelOutputWithCrossAttentions
## BaseModelOutputWithPoolingAndCrossAttentions
[[autodoc]] modeling_outputs.BaseModelOutputWithPoolingAndCrossAttentions
## BaseModelOutputWithPast
[[autodoc]] modeling_outputs.BaseModelOutputWithPast
## BaseModelOutputWithPastAndCrossAttentions
[[autodoc]] modeling_outputs.BaseModelOutputWithPastAndCrossAttentions
## Seq2SeqModelOutput
[[autodoc]] modeling_outputs.Seq2SeqModelOutput
## CausalLMOutput
[[autodoc]] modeling_outputs.CausalLMOutput
## CausalLMOutputWithCrossAttentions
[[autodoc]] modeling_outputs.CausalLMOutputWithCrossAttentions
## CausalLMOutputWithPast
[[autodoc]] modeling_outputs.CausalLMOutputWithPast
## MaskedLMOutput
[[autodoc]] modeling_outputs.MaskedLMOutput
## Seq2SeqLMOutput
[[autodoc]] modeling_outputs.Seq2SeqLMOutput
## NextSentencePredictorOutput
[[autodoc]] modeling_outputs.NextSentencePredictorOutput
## SequenceClassifierOutput
[[autodoc]] modeling_outputs.SequenceClassifierOutput
## Seq2SeqSequenceClassifierOutput
[[autodoc]] modeling_outputs.Seq2SeqSequenceClassifierOutput
## MultipleChoiceModelOutput
[[autodoc]] modeling_outputs.MultipleChoiceModelOutput
## TokenClassifierOutput
[[autodoc]] modeling_outputs.TokenClassifierOutput
## QuestionAnsweringModelOutput
[[autodoc]] modeling_outputs.QuestionAnsweringModelOutput
## Seq2SeqQuestionAnsweringModelOutput
[[autodoc]] modeling_outputs.Seq2SeqQuestionAnsweringModelOutput
## Seq2SeqSpectrogramOutput
[[autodoc]] modeling_outputs.Seq2SeqSpectrogramOutput
## SemanticSegmenterOutput
[[autodoc]] modeling_outputs.SemanticSegmenterOutput
## ImageClassifierOutput
[[autodoc]] modeling_outputs.ImageClassifierOutput
## ImageClassifierOutputWithNoAttention
[[autodoc]] modeling_outputs.ImageClassifierOutputWithNoAttention
## DepthEstimatorOutput
[[autodoc]] modeling_outputs.DepthEstimatorOutput
## Wav2Vec2BaseModelOutput
[[autodoc]] modeling_outputs.Wav2Vec2BaseModelOutput
## XVectorOutput
[[autodoc]] modeling_outputs.XVectorOutput
## Seq2SeqTSModelOutput
[[autodoc]] modeling_outputs.Seq2SeqTSModelOutput
## Seq2SeqTSPredictionOutput
[[autodoc]] modeling_outputs.Seq2SeqTSPredictionOutput
## SampleTSPredictionOutput
[[autodoc]] modeling_outputs.SampleTSPredictionOutput
## TFBaseModelOutput
[[autodoc]] modeling_tf_outputs.TFBaseModelOutput
## TFBaseModelOutputWithPooling
[[autodoc]] modeling_tf_outputs.TFBaseModelOutputWithPooling
## TFBaseModelOutputWithPoolingAndCrossAttentions
[[autodoc]] modeling_tf_outputs.TFBaseModelOutputWithPoolingAndCrossAttentions
## TFBaseModelOutputWithPast
[[autodoc]] modeling_tf_outputs.TFBaseModelOutputWithPast
## TFBaseModelOutputWithPastAndCrossAttentions
[[autodoc]] modeling_tf_outputs.TFBaseModelOutputWithPastAndCrossAttentions
## TFSeq2SeqModelOutput
[[autodoc]] modeling_tf_outputs.TFSeq2SeqModelOutput
## TFCausalLMOutput
[[autodoc]] modeling_tf_outputs.TFCausalLMOutput
## TFCausalLMOutputWithCrossAttentions
[[autodoc]] modeling_tf_outputs.TFCausalLMOutputWithCrossAttentions
## TFCausalLMOutputWithPast
[[autodoc]] modeling_tf_outputs.TFCausalLMOutputWithPast
## TFMaskedLMOutput
[[autodoc]] modeling_tf_outputs.TFMaskedLMOutput
## TFSeq2SeqLMOutput
[[autodoc]] modeling_tf_outputs.TFSeq2SeqLMOutput
## TFNextSentencePredictorOutput
[[autodoc]] modeling_tf_outputs.TFNextSentencePredictorOutput
## TFSequenceClassifierOutput
[[autodoc]] modeling_tf_outputs.TFSequenceClassifierOutput
## TFSeq2SeqSequenceClassifierOutput
[[autodoc]] modeling_tf_outputs.TFSeq2SeqSequenceClassifierOutput
## TFMultipleChoiceModelOutput
[[autodoc]] modeling_tf_outputs.TFMultipleChoiceModelOutput
## TFTokenClassifierOutput
[[autodoc]] modeling_tf_outputs.TFTokenClassifierOutput
## TFQuestionAnsweringModelOutput
[[autodoc]] modeling_tf_outputs.TFQuestionAnsweringModelOutput
## TFSeq2SeqQuestionAnsweringModelOutput
[[autodoc]] modeling_tf_outputs.TFSeq2SeqQuestionAnsweringModelOutput
## FlaxBaseModelOutput
[[autodoc]] modeling_flax_outputs.FlaxBaseModelOutput
## FlaxBaseModelOutputWithPast
[[autodoc]] modeling_flax_outputs.FlaxBaseModelOutputWithPast
## FlaxBaseModelOutputWithPooling
[[autodoc]] modeling_flax_outputs.FlaxBaseModelOutputWithPooling
## FlaxBaseModelOutputWithPastAndCrossAttentions
[[autodoc]] modeling_flax_outputs.FlaxBaseModelOutputWithPastAndCrossAttentions
## FlaxSeq2SeqModelOutput
[[autodoc]] modeling_flax_outputs.FlaxSeq2SeqModelOutput
## FlaxCausalLMOutputWithCrossAttentions
[[autodoc]] modeling_flax_outputs.FlaxCausalLMOutputWithCrossAttentions
## FlaxMaskedLMOutput
[[autodoc]] modeling_flax_outputs.FlaxMaskedLMOutput
## FlaxSeq2SeqLMOutput
[[autodoc]] modeling_flax_outputs.FlaxSeq2SeqLMOutput
## FlaxNextSentencePredictorOutput
[[autodoc]] modeling_flax_outputs.FlaxNextSentencePredictorOutput
## FlaxSequenceClassifierOutput
[[autodoc]] modeling_flax_outputs.FlaxSequenceClassifierOutput
## FlaxSeq2SeqSequenceClassifierOutput
[[autodoc]] modeling_flax_outputs.FlaxSeq2SeqSequenceClassifierOutput
## FlaxMultipleChoiceModelOutput
[[autodoc]] modeling_flax_outputs.FlaxMultipleChoiceModelOutput
## FlaxTokenClassifierOutput
[[autodoc]] modeling_flax_outputs.FlaxTokenClassifierOutput
## FlaxQuestionAnsweringModelOutput
[[autodoc]] modeling_flax_outputs.FlaxQuestionAnsweringModelOutput
## FlaxSeq2SeqQuestionAnsweringModelOutput
[[autodoc]] modeling_flax_outputs.FlaxSeq2SeqQuestionAnsweringModelOutput
|
transformers/docs/source/zh/main_classes/output.md/0
|
{
"file_path": "transformers/docs/source/zh/main_classes/output.md",
"repo_id": "transformers",
"token_count": 3318
}
| 304
|
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 快速上手
[[open-in-colab]]
快来使用 🤗 Transformers 吧！无论你是开发人员还是日常用户，这篇快速上手教程都将帮助你入门并且向你展示如何使用 [`pipeline`] 进行推理，使用 [AutoClass](./model_doc/auto) 加载一个预训练模型和预处理器，以及使用 PyTorch 或 TensorFlow 快速训练一个模型。如果你是一个初学者，我们建议你接下来查看我们的教程或者[课程](https://huggingface.co/course/chapter1/1)，来更深入地了解在这里介绍到的概念。
在开始之前，确保你已经安装了所有必要的库：
```bash
!pip install transformers datasets evaluate accelerate
```
你还需要安装喜欢的机器学习框架：
<frameworkcontent>
<pt>
```bash
pip install torch
```
</pt>
<tf>
```bash
pip install tensorflow
```
</tf>
</frameworkcontent>
## Pipeline
<Youtube id="tiZFewofSLM"/>
使用 [`pipeline`] 是利用预训练模型进行推理的最简单的方式。你能够将 [`pipeline`] 开箱即用地用于跨不同模态的多种任务。来看看它支持的任务列表：
| **任务** | **描述** | **模态** | **Pipeline** |
|------------------------------|-----------------------------------|-----------------|-----------------------------------------------|
| 文本分类 | 为给定的文本序列分配一个标签 | NLP | pipeline(task="sentiment-analysis") |
| 文本生成 | 根据给定的提示生成文本 | NLP | pipeline(task="text-generation") |
| 命名实体识别 | 为序列里的每个 token 分配一个标签（人, 组织, 地址等等） | NLP | pipeline(task="ner") |
| 问答系统 | 通过给定的上下文和问题, 在文本中提取答案 | NLP | pipeline(task="question-answering") |
| 掩盖填充 | 预测出正确的在序列中被掩盖的token | NLP | pipeline(task="fill-mask") |
| 文本摘要 | 为文本序列或文档生成总结 | NLP | pipeline(task="summarization") |
| 文本翻译 | 将文本从一种语言翻译为另一种语言 | NLP | pipeline(task="translation") |
| 图像分类 | 为图像分配一个标签 | Computer vision | pipeline(task="image-classification") |
| 图像分割 | 为图像中每个独立的像素分配标签（支持语义、全景和实例分割） | Computer vision | pipeline(task="image-segmentation") |
| 目标检测 | 预测图像中目标对象的边界框和类别 | Computer vision | pipeline(task="object-detection") |
| 音频分类 | 给音频文件分配一个标签 | Audio | pipeline(task="audio-classification") |
| 自动语音识别 | 将音频文件中的语音提取为文本 | Audio | pipeline(task="automatic-speech-recognition") |
| 视觉问答 | 给定一个图像和一个问题，正确地回答有关图像的问题 | Multimodal | pipeline(task="vqa") |
创建一个 [`pipeline`] 实例并且指定你想要将它用于的任务，就可以开始了。你可以将 [`pipeline`] 用于任何一个上面提到的任务，如果想知道支持的任务的完整列表，可以查阅 [pipeline API 参考](./main_classes/pipelines)。不过, 在这篇教程中，你将把 [`pipeline`] 用在一个情感分析示例上：
```py
>>> from transformers import pipeline
>>> classifier = pipeline("sentiment-analysis")
```
[`pipeline`] 会下载并缓存一个用于情感分析的默认的[预训练模型](https://huggingface.co/distilbert/distilbert-base-uncased-finetuned-sst-2-english)和分词器。现在你可以在目标文本上使用 `classifier` 了：
```py
>>> classifier("We are very happy to show you the 🤗 Transformers library.")
[{'label': 'POSITIVE', 'score': 0.9998}]
```
如果你有不止一个输入，可以把所有输入放入一个列表然后传给[`pipeline`]，它将会返回一个字典列表：
```py
>>> results = classifier(["We are very happy to show you the 🤗 Transformers library.", "We hope you don't hate it."])
>>> for result in results:
... print(f"label: {result['label']}, with score: {round(result['score'], 4)}")
label: POSITIVE, with score: 0.9998
label: NEGATIVE, with score: 0.5309
```
[`pipeline`] 也可以为任何你喜欢的任务遍历整个数据集。在下面这个示例中，让我们选择自动语音识别作为我们的任务：
```py
>>> import torch
>>> from transformers import pipeline
>>> speech_recognizer = pipeline("automatic-speech-recognition", model="facebook/wav2vec2-base-960h")
```
加载一个你想遍历的音频数据集（查阅 🤗 Datasets [快速开始](https://huggingface.co/docs/datasets/quickstart#audio) 获得更多信息）。比如，加载 [MInDS-14](https://huggingface.co/datasets/PolyAI/minds14) 数据集：
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("PolyAI/minds14", name="en-US", split="train") # doctest: +IGNORE_RESULT
```
你需要确保数据集中的音频的采样率与 [`facebook/wav2vec2-base-960h`](https://huggingface.co/facebook/wav2vec2-base-960h) 训练用到的音频的采样率一致：
```py
>>> dataset = dataset.cast_column("audio", Audio(sampling_rate=speech_recognizer.feature_extractor.sampling_rate))
```
当调用 `"audio"` 列时, 音频文件将会自动加载并重采样。
从前四个样本中提取原始波形数组，将它作为列表传给 pipeline：
```py
>>> result = speech_recognizer(dataset[:4]["audio"])
>>> print([d["text"] for d in result])
['I WOULD LIKE TO SET UP A JOINT ACCOUNT WITH MY PARTNER HOW DO I PROCEED WITH DOING THAT', "FODING HOW I'D SET UP A JOIN TO HET WITH MY WIFE AND WHERE THE AP MIGHT BE", "I I'D LIKE TOY SET UP A JOINT ACCOUNT WITH MY PARTNER I'M NOT SEEING THE OPTION TO DO IT ON THE AP SO I CALLED IN TO GET SOME HELP CAN I JUST DO IT OVER THE PHONE WITH YOU AND GIVE YOU THE INFORMATION OR SHOULD I DO IT IN THE AP AND I'M MISSING SOMETHING UQUETTE HAD PREFERRED TO JUST DO IT OVER THE PHONE OF POSSIBLE THINGS", 'HOW DO I THURN A JOIN A COUNT']
```
对于输入非常庞大的大型数据集（比如语音或视觉），你会想到使用一个生成器，而不是一个将所有输入都加载进内存的列表。查阅 [pipeline API 参考](./main_classes/pipelines) 来获取更多信息。
### 在 pipeline 中使用另一个模型和分词器
[`pipeline`] 可以容纳 [Hub](https://huggingface.co/models) 中的任何模型，这让 [`pipeline`] 更容易适用于其他用例。比如，你想要一个能够处理法语文本的模型，就可以使用 Hub 上的标记来筛选出合适的模型。靠前的筛选结果会返回一个为情感分析微调的多语言的 [BERT 模型](https://huggingface.co/nlptown/bert-base-multilingual-uncased-sentiment)，你可以将它用于法语文本：
```py
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
```
<frameworkcontent>
<pt>
使用 [`AutoModelForSequenceClassification`] 和 [`AutoTokenizer`] 来加载预训练模型和它关联的分词器（更多信息可以参考下一节的 `AutoClass`）：
```py
>>> from transformers import AutoTokenizer, AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained(model_name)
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
</pt>
<tf>
使用 [`TFAutoModelForSequenceClassification`] 和 [`AutoTokenizer`] 来加载预训练模型和它关联的分词器（更多信息可以参考下一节的 `TFAutoClass`）：
```py
>>> from transformers import AutoTokenizer, TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained(model_name)
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
</tf>
</frameworkcontent>
在 [`pipeline`] 中指定模型和分词器，现在你就可以在法语文本上使用 `classifier` 了：
```py
>>> classifier = pipeline("sentiment-analysis", model=model, tokenizer=tokenizer)
>>> classifier("Nous sommes très heureux de vous présenter la bibliothèque 🤗 Transformers.")
[{'label': '5 stars', 'score': 0.7273}]
```
如果你没有找到适合你的模型，就需要在你的数据上微调一个预训练模型了。查看 [微调教程](./training) 来学习怎样进行微调。最后，微调完模型后，考虑一下在 Hub 上与社区 [分享](./model_sharing) 这个模型，把机器学习普及到每一个人! 🤗
## AutoClass
<Youtube id="AhChOFRegn4"/>
在幕后，是由 [`AutoModelForSequenceClassification`] 和 [`AutoTokenizer`] 一起支持你在上面用到的 [`pipeline`]。[AutoClass](./model_doc/auto) 是一个能够通过预训练模型的名称或路径自动查找其架构的快捷方式。你只需要为你的任务选择合适的 `AutoClass` 和它关联的预处理类。
让我们回过头来看上一节的示例，看看怎样使用 `AutoClass` 来重现使用 [`pipeline`] 的结果。
### AutoTokenizer
分词器负责预处理文本，将文本转换为用于输入模型的数字数组。有多个用来管理分词过程的规则，包括如何拆分单词和在什么样的级别上拆分单词（在 [分词器总结](./tokenizer_summary) 学习更多关于分词的信息）。要记住最重要的是你需要实例化的分词器要与模型的名称相同, 来确保和模型训练时使用相同的分词规则。
使用 [`AutoTokenizer`] 加载一个分词器:
```py
>>> from transformers import AutoTokenizer
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> tokenizer = AutoTokenizer.from_pretrained(model_name)
```
将文本传入分词器：
```py
>>> encoding = tokenizer("We are very happy to show you the 🤗 Transformers library.")
>>> print(encoding)
{'input_ids': [101, 11312, 10320, 12495, 19308, 10114, 11391, 10855, 10103, 100, 58263, 13299, 119, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
分词器返回了含有如下内容的字典:
* [input_ids](./glossary#input-ids)：用数字表示的 token。
* [attention_mask](.glossary#attention-mask)：应该关注哪些 token 的指示。
分词器也可以接受列表作为输入，并填充和截断文本，返回具有统一长度的批次：
<frameworkcontent>
<pt>
```py
>>> pt_batch = tokenizer(
... ["We are very happy to show you the 🤗 Transformers library.", "We hope you don't hate it."],
... padding=True,
... truncation=True,
... max_length=512,
... return_tensors="pt",
... )
```
</pt>
<tf>
```py
>>> tf_batch = tokenizer(
... ["We are very happy to show you the 🤗 Transformers library.", "We hope you don't hate it."],
... padding=True,
... truncation=True,
... max_length=512,
... return_tensors="tf",
... )
```
</tf>
</frameworkcontent>
<Tip>
查阅[预处理](./preprocessing)教程来获得有关分词的更详细的信息，以及如何使用 [`AutoFeatureExtractor`] 和 [`AutoProcessor`] 来处理图像，音频，还有多模式输入。
</Tip>
### AutoModel
<frameworkcontent>
<pt>
🤗 Transformers 提供了一种简单统一的方式来加载预训练的实例. 这表示你可以像加载 [`AutoTokenizer`] 一样加载 [`AutoModel`]。唯一不同的地方是为你的任务选择正确的[`AutoModel`]。对于文本（或序列）分类，你应该加载[`AutoModelForSequenceClassification`]：
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> pt_model = AutoModelForSequenceClassification.from_pretrained(model_name)
```
<Tip>
通过 [任务摘要](./task_summary) 查找 [`AutoModel`] 支持的任务.
</Tip>
现在可以把预处理好的输入批次直接送进模型。你只需要通过 `**` 来解包字典:
```py
>>> pt_outputs = pt_model(**pt_batch)
```
模型在 `logits` 属性输出最终的激活结果. 在 `logits` 上应用 softmax 函数来查询概率:
```py
>>> from torch import nn
>>> pt_predictions = nn.functional.softmax(pt_outputs.logits, dim=-1)
>>> print(pt_predictions)
tensor([[0.0021, 0.0018, 0.0115, 0.2121, 0.7725],
[0.2084, 0.1826, 0.1969, 0.1755, 0.2365]], grad_fn=<SoftmaxBackward0>)
```
</pt>
<tf>
🤗 Transformers 提供了一种简单统一的方式来加载预训练的实例。这表示你可以像加载 [`AutoTokenizer`] 一样加载 [`TFAutoModel`]。唯一不同的地方是为你的任务选择正确的 [`TFAutoModel`]，对于文本（或序列）分类，你应该加载 [`TFAutoModelForSequenceClassification`]：
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model_name = "nlptown/bert-base-multilingual-uncased-sentiment"
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained(model_name)
```
<Tip>
通过 [任务摘要](./task_summary) 查找 [`AutoModel`] 支持的任务.
</Tip>
现在通过直接将字典的键传给张量，将预处理的输入批次传给模型。
```py
>>> tf_outputs = tf_model(tf_batch)
```
模型在 `logits` 属性输出最终的激活结果。在 `logits` 上应用softmax函数来查询概率：
```py
>>> import tensorflow as tf
>>> tf_predictions = tf.nn.softmax(tf_outputs.logits, axis=-1)
>>> tf_predictions # doctest: +IGNORE_RESULT
```
</tf>
</frameworkcontent>
<Tip>
所有 🤗 Transformers 模型（PyTorch 或 TensorFlow）在最终的激活函数（比如 softmax）*之前* 输出张量，
因为最终的激活函数常常与 loss 融合。模型的输出是特殊的数据类，所以它们的属性可以在 IDE 中被自动补全。模型的输出就像一个元组或字典（你可以通过整数、切片或字符串来索引它），在这种情况下，为 None 的属性会被忽略。
</Tip>
### 保存模型
<frameworkcontent>
<pt>
当你的模型微调完成，你就可以使用 [`PreTrainedModel.save_pretrained`] 把它和它的分词器保存下来：
```py
>>> pt_save_directory = "./pt_save_pretrained"
>>> tokenizer.save_pretrained(pt_save_directory) # doctest: +IGNORE_RESULT
>>> pt_model.save_pretrained(pt_save_directory)
```
当你准备再次使用这个模型时，就可以使用 [`PreTrainedModel.from_pretrained`] 加载它了：
```py
>>> pt_model = AutoModelForSequenceClassification.from_pretrained("./pt_save_pretrained")
```
</pt>
<tf>
当你的模型微调完成，你就可以使用 [`TFPreTrainedModel.save_pretrained`] 把它和它的分词器保存下来：
```py
>>> tf_save_directory = "./tf_save_pretrained"
>>> tokenizer.save_pretrained(tf_save_directory) # doctest: +IGNORE_RESULT
>>> tf_model.save_pretrained(tf_save_directory)
```
当你准备再次使用这个模型时，就可以使用 [`TFPreTrainedModel.from_pretrained`] 加载它了：
```py
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained("./tf_save_pretrained")
```
</tf>
</frameworkcontent>
🤗 Transformers 有一个特别酷的功能，它能够保存一个模型，并且将它加载为 PyTorch 或 TensorFlow 模型。`from_pt` 或 `from_tf` 参数可以将模型从一个框架转换为另一个框架：
<frameworkcontent>
<pt>
```py
>>> from transformers import AutoModel
>>> tokenizer = AutoTokenizer.from_pretrained(tf_save_directory)
>>> pt_model = AutoModelForSequenceClassification.from_pretrained(tf_save_directory, from_tf=True)
```
</pt>
<tf>
```py
>>> from transformers import TFAutoModel
>>> tokenizer = AutoTokenizer.from_pretrained(pt_save_directory)
>>> tf_model = TFAutoModelForSequenceClassification.from_pretrained(pt_save_directory, from_pt=True)
```
</tf>
</frameworkcontent>
## 自定义模型构建
你可以修改模型的配置类来改变模型的构建方式。配置指明了模型的属性，比如隐藏层或者注意力头的数量。当你从自定义的配置类初始化模型时，你就开始自定义模型构建了。模型属性是随机初始化的，你需要先训练模型，然后才能得到有意义的结果。
通过导入 [`AutoConfig`] 来开始，之后加载你想修改的预训练模型。在 [`AutoConfig.from_pretrained`] 中，你能够指定想要修改的属性，比如注意力头的数量：
```py
>>> from transformers import AutoConfig
>>> my_config = AutoConfig.from_pretrained("distilbert/distilbert-base-uncased", n_heads=12)
```
<frameworkcontent>
<pt>
使用 [`AutoModel.from_config`] 根据你的自定义配置创建一个模型：
```py
>>> from transformers import AutoModel
>>> my_model = AutoModel.from_config(my_config)
```
</pt>
<tf>
使用 [`TFAutoModel.from_config`] 根据你的自定义配置创建一个模型：
```py
>>> from transformers import TFAutoModel
>>> my_model = TFAutoModel.from_config(my_config)
```
</tf>
</frameworkcontent>
查阅 [创建一个自定义结构](./create_a_model) 指南获取更多关于构建自定义配置的信息。
## Trainer - PyTorch 优化训练循环
所有的模型都是标准的 [`torch.nn.Module`](https://pytorch.org/docs/stable/nn.html#torch.nn.Module)，所以你可以在任何典型的训练模型中使用它们。当你编写自己的训练循环时，🤗 Transformers 为 PyTorch 提供了一个 [`Trainer`] 类，它包含了基础的训练循环并且为诸如分布式训练，混合精度等特性增加了额外的功能。
取决于你的任务, 你通常可以传递以下的参数给 [`Trainer`]：
1. [`PreTrainedModel`] 或者 [`torch.nn.Module`](https://pytorch.org/docs/stable/nn.html#torch.nn.Module)：
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
2. [`TrainingArguments`] 含有你可以修改的模型超参数，比如学习率，批次大小和训练时的迭代次数。如果你没有指定训练参数，那么它会使用默认值：
```py
>>> from transformers import TrainingArguments
>>> training_args = TrainingArguments(
... output_dir="path/to/save/folder/",
... learning_rate=2e-5,
... per_device_train_batch_size=8,
... per_device_eval_batch_size=8,
... num_train_epochs=2,
... )
```
3. 一个预处理类，比如分词器，特征提取器或者处理器：
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
```
4. 加载一个数据集：
```py
>>> from datasets import load_dataset
>>> dataset = load_dataset("rotten_tomatoes") # doctest: +IGNORE_RESULT
```
5. 创建一个给数据集分词的函数，并且使用 [`~datasets.Dataset.map`] 应用到整个数据集：
```py
>>> def tokenize_dataset(dataset):
... return tokenizer(dataset["text"])
>>> dataset = dataset.map(tokenize_dataset, batched=True)
```
6. 用来从数据集中创建批次的 [`DataCollatorWithPadding`]：
```py
>>> from transformers import DataCollatorWithPadding
>>> data_collator = DataCollatorWithPadding(tokenizer=tokenizer)
```
现在把所有的类传给 [`Trainer`]：
```py
>>> from transformers import Trainer
>>> trainer = Trainer(
... model=model,
... args=training_args,
... train_dataset=dataset["train"],
... eval_dataset=dataset["test"],
... tokenizer=tokenizer,
... data_collator=data_collator,
... ) # doctest: +SKIP
```
一切准备就绪后，调用 [`~Trainer.train`] 进行训练：
```py
>>> trainer.train() # doctest: +SKIP
```
<Tip>
对于像翻译或摘要这些使用序列到序列模型的任务，用 [`Seq2SeqTrainer`] 和 [`Seq2SeqTrainingArguments`] 来替代。
</Tip>
你可以通过子类化 [`Trainer`] 中的方法来自定义训练循环。这样你就可以自定义像损失函数，优化器和调度器这样的特性。查阅 [`Trainer`] 参考手册了解哪些方法能够被子类化。
另一个自定义训练循环的方式是通过[回调](./main_classes/callback)。你可以使用回调来与其他库集成，查看训练循环来报告进度或提前结束训练。回调不会修改训练循环。如果想自定义损失函数等，就需要子类化 [`Trainer`] 了。
## 使用 Tensorflow 训练
所有模型都是标准的 [`tf.keras.Model`](https://www.tensorflow.org/api_docs/python/tf/keras/Model)，所以你可以通过 [Keras](https://keras.io/) API 实现在 Tensorflow 中训练。🤗 Transformers 提供了 [`~TFPreTrainedModel.prepare_tf_dataset`] 方法来轻松地将数据集加载为 `tf.data.Dataset`，这样你就可以使用 Keras 的 [`compile`](https://keras.io/api/models/model_training_apis/#compile-method) 和 [`fit`](https://keras.io/api/models/model_training_apis/#fit-method) 方法马上开始训练。
1. 使用 [`TFPreTrainedModel`] 或者 [`tf.keras.Model`](https://www.tensorflow.org/api_docs/python/tf/keras/Model) 来开始：
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
2. 一个预处理类，比如分词器，特征提取器或者处理器：
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
```
3. 创建一个给数据集分词的函数
```py
>>> def tokenize_dataset(dataset):
... return tokenizer(dataset["text"]) # doctest: +SKIP
```
4. 使用 [`~datasets.Dataset.map`] 将分词器应用到整个数据集，之后将数据集和分词器传给 [`~TFPreTrainedModel.prepare_tf_dataset`]。如果你需要的话，也可以在这里改变批次大小和是否打乱数据集：
```py
>>> dataset = dataset.map(tokenize_dataset) # doctest: +SKIP
>>> tf_dataset = model.prepare_tf_dataset(
... dataset, batch_size=16, shuffle=True, tokenizer=tokenizer
... ) # doctest: +SKIP
```
5. 一切准备就绪后，调用 `compile` 和 `fit` 开始训练：
```py
>>> from tensorflow.keras.optimizers import Adam
>>> model.compile(optimizer=Adam(3e-5))
>>> model.fit(dataset) # doctest: +SKIP
```
## 接下来做什么?
现在你已经完成了 🤗 Transformers 的快速上手教程，来看看我们的指南并且学习如何做一些更具体的事情，比如写一个自定义模型，为某个任务微调一个模型以及如何使用脚本来训练模型。如果你有兴趣了解更多 🤗 Transformers 的核心章节，那就喝杯咖啡然后来看看我们的概念指南吧！
|
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|
{
"file_path": "transformers/docs/source/zh/quicktour.md",
"repo_id": "transformers",
"token_count": 12905
}
| 305
|
from transformers.models.gemma.modeling_gemma import GemmaForSequenceClassification
from transformers.models.llama.configuration_llama import LlamaConfig
# Example where we only want to only modify the docstring
class MyNewModel2Config(LlamaConfig):
r"""
This is the configuration class to store the configuration of a [`GemmaModel`]. It is used to instantiate an Gemma
model according to the specified arguments, defining the model architecture. Instantiating a configuration with the
defaults will yield a similar configuration to that of the Gemma-7B.
e.g. [google/gemma-7b](https://huggingface.co/google/gemma-7b)
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 256000):
Vocabulary size of the Gemma model. Defines the number of different tokens that can be represented by the
`inputs_ids` passed when calling [`GemmaModel`]
```python
>>> from transformers import GemmaModel, GemmaConfig
>>> # Initializing a Gemma gemma-7b style configuration
>>> configuration = GemmaConfig()
>>> # Initializing a model from the gemma-7b style configuration
>>> model = GemmaModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
# Example where alllllll the dependencies are fetched to just copy the entire class
class MyNewModel2ForSequenceClassification(GemmaForSequenceClassification):
pass
|
transformers/examples/diff-conversion/diff_my_new_model2.py/0
|
{
"file_path": "transformers/examples/diff-conversion/diff_my_new_model2.py",
"repo_id": "transformers",
"token_count": 483
}
| 306
|
<!---
Copyright 2021 The Google Flax Team Authors and HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
# Question Answering examples
Based on the script [`run_qa.py`](https://github.com/huggingface/transformers/blob/main/examples/flax/question-answering/run_qa.py).
**Note:** This script only works with models that have a fast tokenizer (backed by the 🤗 Tokenizers library) as it
uses special features of those tokenizers. You can check if your favorite model has a fast tokenizer in
[this table](https://huggingface.co/transformers/index.html#supported-frameworks), if it doesn't you can still use the old version
of the script.
The following example fine-tunes BERT on SQuAD:
```bash
python run_qa.py \
--model_name_or_path google-bert/bert-base-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--max_seq_length 384 \
--doc_stride 128 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--per_device_train_batch_size 12 \
--output_dir ./bert-qa-squad \
--eval_steps 1000 \
--push_to_hub
```
Using the command above, the script will train for 2 epochs and run eval after each epoch.
Metrics and hyperparameters are stored in Tensorflow event files in `--output_dir`.
You can see the results by running `tensorboard` in that directory:
```bash
$ tensorboard --logdir .
```
or directly on the hub under *Training metrics*.
Training with the previously defined hyper-parameters yields the following results:
```bash
f1 = 88.62
exact_match = 81.34
```
sample Metrics - [tfhub.dev](https://tensorboard.dev/experiment/6gU75Hx8TGCnc6tr4ZgI9Q)
Here is an example training on 4 TITAN RTX GPUs and Bert Whole Word Masking uncased model to reach a F1 > 93 on SQuAD1.1:
```bash
export CUDA_VISIBLE_DEVICES=0,1,2,3
python run_qa.py \
--model_name_or_path google-bert/bert-large-uncased-whole-word-masking \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 6 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir ./wwm_uncased_finetuned_squad/ \
--eval_steps 1000 \
--push_to_hub
```
Training with the previously defined hyper-parameters yields the following results:
```bash
f1 = 93.31
exact_match = 87.04
```
### Usage notes
Note that when contexts are long they may be split into multiple training cases, not all of which may contain
the answer span.
As-is, the example script will train on SQuAD or any other question-answering dataset formatted the same way, and can handle user
inputs as well.
### Memory usage and data loading
One thing to note is that all data is loaded into memory in this script. Most question answering datasets are small
enough that this is not an issue, but if you have a very large dataset you will need to modify the script to handle
data streaming.
|
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|
{
"file_path": "transformers/examples/flax/question-answering/README.md",
"repo_id": "transformers",
"token_count": 1053
}
| 307
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2021 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Fine-tuning a 🤗 Flax Transformers model on token classification tasks (NER, POS, CHUNKS)"""
import json
import logging
import math
import os
import random
import sys
import time
import warnings
from dataclasses import asdict, dataclass, field
from enum import Enum
from itertools import chain
from pathlib import Path
from typing import Any, Callable, Dict, Optional, Tuple
import datasets
import evaluate
import jax
import jax.numpy as jnp
import numpy as np
import optax
from datasets import ClassLabel, load_dataset
from flax import struct, traverse_util
from flax.jax_utils import pad_shard_unpad, replicate, unreplicate
from flax.training import train_state
from flax.training.common_utils import get_metrics, onehot, shard
from huggingface_hub import HfApi
from tqdm import tqdm
import transformers
from transformers import (
AutoConfig,
AutoTokenizer,
FlaxAutoModelForTokenClassification,
HfArgumentParser,
is_tensorboard_available,
)
from transformers.utils import check_min_version, send_example_telemetry
from transformers.utils.versions import require_version
logger = logging.getLogger(__name__)
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.45.0.dev0")
require_version("datasets>=1.8.0", "To fix: pip install -r examples/pytorch/token-classification/requirements.txt")
Array = Any
Dataset = datasets.arrow_dataset.Dataset
PRNGKey = Any
@dataclass
class TrainingArguments:
output_dir: str = field(
metadata={"help": "The output directory where the model predictions and checkpoints will be written."},
)
overwrite_output_dir: bool = field(
default=False,
metadata={
"help": (
"Overwrite the content of the output directory. "
"Use this to continue training if output_dir points to a checkpoint directory."
)
},
)
do_train: bool = field(default=False, metadata={"help": "Whether to run training."})
do_eval: bool = field(default=False, metadata={"help": "Whether to run eval on the dev set."})
per_device_train_batch_size: int = field(
default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for training."}
)
per_device_eval_batch_size: int = field(
default=8, metadata={"help": "Batch size per GPU/TPU core/CPU for evaluation."}
)
learning_rate: float = field(default=5e-5, metadata={"help": "The initial learning rate for AdamW."})
weight_decay: float = field(default=0.0, metadata={"help": "Weight decay for AdamW if we apply some."})
adam_beta1: float = field(default=0.9, metadata={"help": "Beta1 for AdamW optimizer"})
adam_beta2: float = field(default=0.999, metadata={"help": "Beta2 for AdamW optimizer"})
adam_epsilon: float = field(default=1e-8, metadata={"help": "Epsilon for AdamW optimizer."})
adafactor: bool = field(default=False, metadata={"help": "Whether or not to replace AdamW by Adafactor."})
num_train_epochs: float = field(default=3.0, metadata={"help": "Total number of training epochs to perform."})
warmup_steps: int = field(default=0, metadata={"help": "Linear warmup over warmup_steps."})
logging_steps: int = field(default=500, metadata={"help": "Log every X updates steps."})
save_steps: int = field(default=500, metadata={"help": "Save checkpoint every X updates steps."})
eval_steps: int = field(default=None, metadata={"help": "Run an evaluation every X steps."})
seed: int = field(default=42, metadata={"help": "Random seed that will be set at the beginning of training."})
push_to_hub: bool = field(
default=False, metadata={"help": "Whether or not to upload the trained model to the model hub after training."}
)
hub_model_id: str = field(
default=None, metadata={"help": "The name of the repository to keep in sync with the local `output_dir`."}
)
hub_token: str = field(default=None, metadata={"help": "The token to use to push to the Model Hub."})
def __post_init__(self):
if self.output_dir is not None:
self.output_dir = os.path.expanduser(self.output_dir)
def to_dict(self):
"""
Serializes this instance while replace `Enum` by their values (for JSON serialization support). It obfuscates
the token values by removing their value.
"""
d = asdict(self)
for k, v in d.items():
if isinstance(v, Enum):
d[k] = v.value
if isinstance(v, list) and len(v) > 0 and isinstance(v[0], Enum):
d[k] = [x.value for x in v]
if k.endswith("_token"):
d[k] = f"<{k.upper()}>"
return d
@dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"}
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
tokenizer_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None,
metadata={"help": "Where do you want to store the pretrained models downloaded from huggingface.co"},
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
token: str = field(
default=None,
metadata={
"help": (
"The token to use as HTTP bearer authorization for remote files. If not specified, will use the token "
"generated when running `huggingface-cli login` (stored in `~/.huggingface`)."
)
},
)
use_auth_token: bool = field(
default=None,
metadata={
"help": "The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead."
},
)
trust_remote_code: bool = field(
default=False,
metadata={
"help": (
"Whether to trust the execution of code from datasets/models defined on the Hub."
" This option should only be set to `True` for repositories you trust and in which you have read the"
" code, as it will execute code present on the Hub on your local machine."
)
},
)
@dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
"""
task_name: Optional[str] = field(default="ner", metadata={"help": "The name of the task (ner, pos...)."})
dataset_name: Optional[str] = field(
default=None, metadata={"help": "The name of the dataset to use (via the datasets library)."}
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
train_file: Optional[str] = field(
default=None, metadata={"help": "The input training data file (a csv or JSON file)."}
)
validation_file: Optional[str] = field(
default=None,
metadata={"help": "An optional input evaluation data file to evaluate on (a csv or JSON file)."},
)
test_file: Optional[str] = field(
default=None,
metadata={"help": "An optional input test data file to predict on (a csv or JSON file)."},
)
text_column_name: Optional[str] = field(
default=None, metadata={"help": "The column name of text to input in the file (a csv or JSON file)."}
)
label_column_name: Optional[str] = field(
default=None, metadata={"help": "The column name of label to input in the file (a csv or JSON file)."}
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_seq_length: int = field(
default=None,
metadata={
"help": (
"The maximum total input sequence length after tokenization. If set, sequences longer "
"than this will be truncated, sequences shorter will be padded."
)
},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
)
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
)
},
)
max_predict_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of prediction examples to this "
"value if set."
)
},
)
label_all_tokens: bool = field(
default=False,
metadata={
"help": (
"Whether to put the label for one word on all tokens of generated by that word or just on the "
"one (in which case the other tokens will have a padding index)."
)
},
)
return_entity_level_metrics: bool = field(
default=False,
metadata={"help": "Whether to return all the entity levels during evaluation or just the overall ones."},
)
def __post_init__(self):
if self.dataset_name is None and self.train_file is None and self.validation_file is None:
raise ValueError("Need either a dataset name or a training/validation file.")
else:
if self.train_file is not None:
extension = self.train_file.split(".")[-1]
assert extension in ["csv", "json"], "`train_file` should be a csv or a json file."
if self.validation_file is not None:
extension = self.validation_file.split(".")[-1]
assert extension in ["csv", "json"], "`validation_file` should be a csv or a json file."
self.task_name = self.task_name.lower()
def create_train_state(
model: FlaxAutoModelForTokenClassification,
learning_rate_fn: Callable[[int], float],
num_labels: int,
training_args: TrainingArguments,
) -> train_state.TrainState:
"""Create initial training state."""
class TrainState(train_state.TrainState):
"""Train state with an Optax optimizer.
The two functions below differ depending on whether the task is classification
or regression.
Args:
logits_fn: Applied to last layer to obtain the logits.
loss_fn: Function to compute the loss.
"""
logits_fn: Callable = struct.field(pytree_node=False)
loss_fn: Callable = struct.field(pytree_node=False)
# We use Optax's "masking" functionality to not apply weight decay
# to bias and LayerNorm scale parameters. decay_mask_fn returns a
# mask boolean with the same structure as the parameters.
# The mask is True for parameters that should be decayed.
def decay_mask_fn(params):
flat_params = traverse_util.flatten_dict(params)
# find out all LayerNorm parameters
layer_norm_candidates = ["layernorm", "layer_norm", "ln"]
layer_norm_named_params = {
layer[-2:]
for layer_norm_name in layer_norm_candidates
for layer in flat_params.keys()
if layer_norm_name in "".join(layer).lower()
}
flat_mask = {path: (path[-1] != "bias" and path[-2:] not in layer_norm_named_params) for path in flat_params}
return traverse_util.unflatten_dict(flat_mask)
tx = optax.adamw(
learning_rate=learning_rate_fn,
b1=training_args.adam_beta1,
b2=training_args.adam_beta2,
eps=training_args.adam_epsilon,
weight_decay=training_args.weight_decay,
mask=decay_mask_fn,
)
def cross_entropy_loss(logits, labels):
xentropy = optax.softmax_cross_entropy(logits, onehot(labels, num_classes=num_labels))
return jnp.mean(xentropy)
return TrainState.create(
apply_fn=model.__call__,
params=model.params,
tx=tx,
logits_fn=lambda logits: logits.argmax(-1),
loss_fn=cross_entropy_loss,
)
def create_learning_rate_fn(
train_ds_size: int, train_batch_size: int, num_train_epochs: int, num_warmup_steps: int, learning_rate: float
) -> Callable[[int], jnp.ndarray]:
"""Returns a linear warmup, linear_decay learning rate function."""
steps_per_epoch = train_ds_size // train_batch_size
num_train_steps = steps_per_epoch * num_train_epochs
warmup_fn = optax.linear_schedule(init_value=0.0, end_value=learning_rate, transition_steps=num_warmup_steps)
decay_fn = optax.linear_schedule(
init_value=learning_rate, end_value=0, transition_steps=num_train_steps - num_warmup_steps
)
schedule_fn = optax.join_schedules(schedules=[warmup_fn, decay_fn], boundaries=[num_warmup_steps])
return schedule_fn
def train_data_collator(rng: PRNGKey, dataset: Dataset, batch_size: int):
"""Returns shuffled batches of size `batch_size` from truncated `train dataset`, sharded over all local devices."""
steps_per_epoch = len(dataset) // batch_size
perms = jax.random.permutation(rng, len(dataset))
perms = perms[: steps_per_epoch * batch_size] # Skip incomplete batch.
perms = perms.reshape((steps_per_epoch, batch_size))
for perm in perms:
batch = dataset[perm]
batch = {k: np.array(v) for k, v in batch.items()}
batch = shard(batch)
yield batch
def eval_data_collator(dataset: Dataset, batch_size: int):
"""Returns batches of size `batch_size` from `eval dataset`. Sharding handled by `pad_shard_unpad` in the eval loop."""
batch_idx = np.arange(len(dataset))
steps_per_epoch = math.ceil(len(dataset) / batch_size)
batch_idx = np.array_split(batch_idx, steps_per_epoch)
for idx in batch_idx:
batch = dataset[idx]
batch = {k: np.array(v) for k, v in batch.items()}
yield batch
def main():
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
if model_args.use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead.",
FutureWarning,
)
if model_args.token is not None:
raise ValueError("`token` and `use_auth_token` are both specified. Please set only the argument `token`.")
model_args.token = model_args.use_auth_token
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your Python/PyTorch versions.
send_example_telemetry("run_ner", model_args, data_args, framework="flax")
# Make one log on every process with the configuration for debugging.
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO,
)
# Setup logging, we only want one process per machine to log things on the screen.
logger.setLevel(logging.INFO if jax.process_index() == 0 else logging.ERROR)
if jax.process_index() == 0:
datasets.utils.logging.set_verbosity_warning()
transformers.utils.logging.set_verbosity_info()
else:
datasets.utils.logging.set_verbosity_error()
transformers.utils.logging.set_verbosity_error()
# Handle the repository creation
if training_args.push_to_hub:
# Retrieve of infer repo_name
repo_name = training_args.hub_model_id
if repo_name is None:
repo_name = Path(training_args.output_dir).absolute().name
# Create repo and retrieve repo_id
api = HfApi()
repo_id = api.create_repo(repo_name, exist_ok=True, token=training_args.hub_token).repo_id
# Get the datasets: you can either provide your own CSV/JSON/TXT training and evaluation files (see below)
# or just provide the name of one of the public datasets for token classification task available on the hub at https://huggingface.co/datasets/
# (the dataset will be downloaded automatically from the datasets Hub).
#
# For CSV/JSON files, this script will use the column called 'tokens' or the first column if no column called
# 'tokens' is found. You can easily tweak this behavior (see below).
#
# In distributed training, the load_dataset function guarantee that only one local process can concurrently
# download the dataset.
if data_args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
raw_datasets = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
else:
# Loading the dataset from local csv or json file.
data_files = {}
if data_args.train_file is not None:
data_files["train"] = data_args.train_file
if data_args.validation_file is not None:
data_files["validation"] = data_args.validation_file
extension = (data_args.train_file if data_args.train_file is not None else data_args.valid_file).split(".")[-1]
raw_datasets = load_dataset(
extension,
data_files=data_files,
cache_dir=model_args.cache_dir,
token=model_args.token,
)
# See more about loading any type of standard or custom dataset at
# https://huggingface.co/docs/datasets/loading_datasets.
if raw_datasets["train"] is not None:
column_names = raw_datasets["train"].column_names
features = raw_datasets["train"].features
else:
column_names = raw_datasets["validation"].column_names
features = raw_datasets["validation"].features
if data_args.text_column_name is not None:
text_column_name = data_args.text_column_name
elif "tokens" in column_names:
text_column_name = "tokens"
else:
text_column_name = column_names[0]
if data_args.label_column_name is not None:
label_column_name = data_args.label_column_name
elif f"{data_args.task_name}_tags" in column_names:
label_column_name = f"{data_args.task_name}_tags"
else:
label_column_name = column_names[1]
# In the event the labels are not a `Sequence[ClassLabel]`, we will need to go through the dataset to get the
# unique labels.
def get_label_list(labels):
unique_labels = set()
for label in labels:
unique_labels = unique_labels | set(label)
label_list = list(unique_labels)
label_list.sort()
return label_list
if isinstance(features[label_column_name].feature, ClassLabel):
label_list = features[label_column_name].feature.names
# No need to convert the labels since they are already ints.
label_to_id = {i: i for i in range(len(label_list))}
else:
label_list = get_label_list(raw_datasets["train"][label_column_name])
label_to_id = {l: i for i, l in enumerate(label_list)}
num_labels = len(label_list)
# Load pretrained model and tokenizer
config = AutoConfig.from_pretrained(
model_args.config_name if model_args.config_name else model_args.model_name_or_path,
num_labels=num_labels,
label2id=label_to_id,
id2label={i: l for l, i in label_to_id.items()},
finetuning_task=data_args.task_name,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
tokenizer_name_or_path = model_args.tokenizer_name if model_args.tokenizer_name else model_args.model_name_or_path
if config.model_type in {"gpt2", "roberta"}:
tokenizer = AutoTokenizer.from_pretrained(
tokenizer_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
add_prefix_space=True,
)
else:
tokenizer = AutoTokenizer.from_pretrained(
tokenizer_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
model = FlaxAutoModelForTokenClassification.from_pretrained(
model_args.model_name_or_path,
config=config,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
# Preprocessing the datasets
# Tokenize all texts and align the labels with them.
def tokenize_and_align_labels(examples):
tokenized_inputs = tokenizer(
examples[text_column_name],
max_length=data_args.max_seq_length,
padding="max_length",
truncation=True,
# We use this argument because the texts in our dataset are lists of words (with a label for each word).
is_split_into_words=True,
)
labels = []
for i, label in enumerate(examples[label_column_name]):
word_ids = tokenized_inputs.word_ids(batch_index=i)
previous_word_idx = None
label_ids = []
for word_idx in word_ids:
# Special tokens have a word id that is None. We set the label to -100 so they are automatically
# ignored in the loss function.
if word_idx is None:
label_ids.append(-100)
# We set the label for the first token of each word.
elif word_idx != previous_word_idx:
label_ids.append(label_to_id[label[word_idx]])
# For the other tokens in a word, we set the label to either the current label or -100, depending on
# the label_all_tokens flag.
else:
label_ids.append(label_to_id[label[word_idx]] if data_args.label_all_tokens else -100)
previous_word_idx = word_idx
labels.append(label_ids)
tokenized_inputs["labels"] = labels
return tokenized_inputs
processed_raw_datasets = raw_datasets.map(
tokenize_and_align_labels,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
remove_columns=raw_datasets["train"].column_names,
desc="Running tokenizer on dataset",
)
train_dataset = processed_raw_datasets["train"]
eval_dataset = processed_raw_datasets["validation"]
# Log a few random samples from the training set:
for index in random.sample(range(len(train_dataset)), 3):
logger.info(f"Sample {index} of the training set: {train_dataset[index]}.")
# Define a summary writer
has_tensorboard = is_tensorboard_available()
if has_tensorboard and jax.process_index() == 0:
try:
from flax.metrics.tensorboard import SummaryWriter
summary_writer = SummaryWriter(training_args.output_dir)
summary_writer.hparams({**training_args.to_dict(), **vars(model_args), **vars(data_args)})
except ImportError as ie:
has_tensorboard = False
logger.warning(
f"Unable to display metrics through TensorBoard because some package are not installed: {ie}"
)
else:
logger.warning(
"Unable to display metrics through TensorBoard because the package is not installed: "
"Please run pip install tensorboard to enable."
)
def write_train_metric(summary_writer, train_metrics, train_time, step):
summary_writer.scalar("train_time", train_time, step)
train_metrics = get_metrics(train_metrics)
for key, vals in train_metrics.items():
tag = f"train_{key}"
for i, val in enumerate(vals):
summary_writer.scalar(tag, val, step - len(vals) + i + 1)
def write_eval_metric(summary_writer, eval_metrics, step):
for metric_name, value in eval_metrics.items():
summary_writer.scalar(f"eval_{metric_name}", value, step)
num_epochs = int(training_args.num_train_epochs)
rng = jax.random.PRNGKey(training_args.seed)
dropout_rngs = jax.random.split(rng, jax.local_device_count())
train_batch_size = training_args.per_device_train_batch_size * jax.local_device_count()
per_device_eval_batch_size = int(training_args.per_device_eval_batch_size)
eval_batch_size = training_args.per_device_eval_batch_size * jax.local_device_count()
learning_rate_fn = create_learning_rate_fn(
len(train_dataset),
train_batch_size,
training_args.num_train_epochs,
training_args.warmup_steps,
training_args.learning_rate,
)
state = create_train_state(model, learning_rate_fn, num_labels=num_labels, training_args=training_args)
# define step functions
def train_step(
state: train_state.TrainState, batch: Dict[str, Array], dropout_rng: PRNGKey
) -> Tuple[train_state.TrainState, float]:
"""Trains model with an optimizer (both in `state`) on `batch`, returning a pair `(new_state, loss)`."""
dropout_rng, new_dropout_rng = jax.random.split(dropout_rng)
targets = batch.pop("labels")
def loss_fn(params):
logits = state.apply_fn(**batch, params=params, dropout_rng=dropout_rng, train=True)[0]
loss = state.loss_fn(logits, targets)
return loss
grad_fn = jax.value_and_grad(loss_fn)
loss, grad = grad_fn(state.params)
grad = jax.lax.pmean(grad, "batch")
new_state = state.apply_gradients(grads=grad)
metrics = jax.lax.pmean({"loss": loss, "learning_rate": learning_rate_fn(state.step)}, axis_name="batch")
return new_state, metrics, new_dropout_rng
p_train_step = jax.pmap(train_step, axis_name="batch", donate_argnums=(0,))
def eval_step(state, batch):
logits = state.apply_fn(**batch, params=state.params, train=False)[0]
return state.logits_fn(logits)
p_eval_step = jax.pmap(eval_step, axis_name="batch")
metric = evaluate.load("seqeval", cache_dir=model_args.cache_dir)
def get_labels(y_pred, y_true):
# Transform predictions and references tensos to numpy arrays
# Remove ignored index (special tokens)
true_predictions = [
[label_list[p] for (p, l) in zip(pred, gold_label) if l != -100]
for pred, gold_label in zip(y_pred, y_true)
]
true_labels = [
[label_list[l] for (p, l) in zip(pred, gold_label) if l != -100]
for pred, gold_label in zip(y_pred, y_true)
]
return true_predictions, true_labels
def compute_metrics():
results = metric.compute()
if data_args.return_entity_level_metrics:
# Unpack nested dictionaries
final_results = {}
for key, value in results.items():
if isinstance(value, dict):
for n, v in value.items():
final_results[f"{key}_{n}"] = v
else:
final_results[key] = value
return final_results
else:
return {
"precision": results["overall_precision"],
"recall": results["overall_recall"],
"f1": results["overall_f1"],
"accuracy": results["overall_accuracy"],
}
logger.info(f"===== Starting training ({num_epochs} epochs) =====")
train_time = 0
# make sure weights are replicated on each device
state = replicate(state)
train_time = 0
step_per_epoch = len(train_dataset) // train_batch_size
total_steps = step_per_epoch * num_epochs
epochs = tqdm(range(num_epochs), desc=f"Epoch ... (1/{num_epochs})", position=0)
for epoch in epochs:
train_start = time.time()
train_metrics = []
# Create sampling rng
rng, input_rng = jax.random.split(rng)
# train
for step, batch in enumerate(
tqdm(
train_data_collator(input_rng, train_dataset, train_batch_size),
total=step_per_epoch,
desc="Training...",
position=1,
)
):
state, train_metric, dropout_rngs = p_train_step(state, batch, dropout_rngs)
train_metrics.append(train_metric)
cur_step = (epoch * step_per_epoch) + (step + 1)
if cur_step % training_args.logging_steps == 0 and cur_step > 0:
# Save metrics
train_metric = unreplicate(train_metric)
train_time += time.time() - train_start
if has_tensorboard and jax.process_index() == 0:
write_train_metric(summary_writer, train_metrics, train_time, cur_step)
epochs.write(
f"Step... ({cur_step}/{total_steps} | Training Loss: {train_metric['loss']}, Learning Rate:"
f" {train_metric['learning_rate']})"
)
train_metrics = []
if cur_step % training_args.eval_steps == 0 and cur_step > 0:
eval_metrics = {}
# evaluate
for batch in tqdm(
eval_data_collator(eval_dataset, eval_batch_size),
total=math.ceil(len(eval_dataset) / eval_batch_size),
desc="Evaluating ...",
position=2,
):
labels = batch.pop("labels")
predictions = pad_shard_unpad(p_eval_step)(
state, batch, min_device_batch=per_device_eval_batch_size
)
predictions = np.array(predictions)
labels[np.array(chain(*batch["attention_mask"])) == 0] = -100
preds, refs = get_labels(predictions, labels)
metric.add_batch(
predictions=preds,
references=refs,
)
eval_metrics = compute_metrics()
if data_args.return_entity_level_metrics:
logger.info(f"Step... ({cur_step}/{total_steps} | Validation metrics: {eval_metrics}")
else:
logger.info(
f"Step... ({cur_step}/{total_steps} | Validation f1: {eval_metrics['f1']}, Validation Acc:"
f" {eval_metrics['accuracy']})"
)
if has_tensorboard and jax.process_index() == 0:
write_eval_metric(summary_writer, eval_metrics, cur_step)
if (cur_step % training_args.save_steps == 0 and cur_step > 0) or (cur_step == total_steps):
# save checkpoint after each epoch and push checkpoint to the hub
if jax.process_index() == 0:
params = jax.device_get(unreplicate(state.params))
model.save_pretrained(training_args.output_dir, params=params)
tokenizer.save_pretrained(training_args.output_dir)
if training_args.push_to_hub:
api.upload_folder(
commit_message=f"Saving weights and logs of step {cur_step}",
folder_path=training_args.output_dir,
repo_id=repo_id,
repo_type="model",
token=training_args.hub_token,
)
epochs.desc = f"Epoch ... {epoch + 1}/{num_epochs}"
# Eval after training
if training_args.do_eval:
eval_metrics = {}
eval_loader = eval_data_collator(eval_dataset, eval_batch_size)
for batch in tqdm(eval_loader, total=len(eval_dataset) // eval_batch_size, desc="Evaluating ...", position=2):
labels = batch.pop("labels")
predictions = pad_shard_unpad(p_eval_step)(state, batch, min_device_batch=per_device_eval_batch_size)
predictions = np.array(predictions)
labels[np.array(chain(*batch["attention_mask"])) == 0] = -100
preds, refs = get_labels(predictions, labels)
metric.add_batch(predictions=preds, references=refs)
eval_metrics = compute_metrics()
if jax.process_index() == 0:
eval_metrics = {f"eval_{metric_name}": value for metric_name, value in eval_metrics.items()}
path = os.path.join(training_args.output_dir, "eval_results.json")
with open(path, "w") as f:
json.dump(eval_metrics, f, indent=4, sort_keys=True)
if __name__ == "__main__":
main()
|
transformers/examples/flax/token-classification/run_flax_ner.py/0
|
{
"file_path": "transformers/examples/flax/token-classification/run_flax_ner.py",
"repo_id": "transformers",
"token_count": 14961
}
| 308
|
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
export TPU_NUM_CORES=8
# the proper usage is documented in the README, you need to specify data_dir, output_dir and model_name_or_path
# run ./finetune_tpu.sh --help to see all the possible options
python xla_spawn.py --num_cores $TPU_NUM_CORES \
finetune_trainer.py \
--learning_rate=3e-5 \
--do_train --do_eval \
--eval_strategy steps \
--prediction_loss_only \
--n_val 1000 \
"$@"
|
transformers/examples/legacy/seq2seq/finetune_tpu.sh/0
|
{
"file_path": "transformers/examples/legacy/seq2seq/finetune_tpu.sh",
"repo_id": "transformers",
"token_count": 322
}
| 309
|
#!/usr/bin/env python
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import fire
from torch.utils.data import DataLoader
from tqdm import tqdm
from transformers import AutoTokenizer
from utils import Seq2SeqDataset, pickle_save
def save_len_file(
tokenizer_name, data_dir, max_source_length=1024, max_target_length=1024, consider_target=False, **kwargs
):
"""Save max(src_len, tgt_len) for each example to allow dynamic batching."""
tok = AutoTokenizer.from_pretrained(tokenizer_name)
train_ds = Seq2SeqDataset(tok, data_dir, max_source_length, max_target_length, type_path="train", **kwargs)
pad = tok.pad_token_id
def get_lens(ds):
dl = tqdm(
DataLoader(ds, batch_size=512, num_workers=8, shuffle=False, collate_fn=ds.collate_fn),
desc=str(ds.len_file),
)
max_lens = []
for batch in dl:
src_lens = batch["input_ids"].ne(pad).sum(1).tolist()
tgt_lens = batch["labels"].ne(pad).sum(1).tolist()
if consider_target:
for src, tgt in zip(src_lens, tgt_lens):
max_lens.append(max(src, tgt))
else:
max_lens.extend(src_lens)
return max_lens
train_lens = get_lens(train_ds)
val_ds = Seq2SeqDataset(tok, data_dir, max_source_length, max_target_length, type_path="val", **kwargs)
val_lens = get_lens(val_ds)
pickle_save(train_lens, train_ds.len_file)
pickle_save(val_lens, val_ds.len_file)
if __name__ == "__main__":
fire.Fire(save_len_file)
|
transformers/examples/legacy/seq2seq/save_len_file.py/0
|
{
"file_path": "transformers/examples/legacy/seq2seq/save_len_file.py",
"repo_id": "transformers",
"token_count": 869
}
| 310
|
#!/usr/bin/env python
# coding=utf-8
# Copyright The HuggingFace Team and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Fine-tuning a 🤗 Transformers model on multiple choice relying on the accelerate library without using a Trainer.
"""
# You can also adapt this script on your own multiple choice task. Pointers for this are left as comments.
import argparse
import json
import logging
import math
import os
import random
from dataclasses import dataclass
from itertools import chain
from pathlib import Path
from typing import Optional, Union
import datasets
import evaluate
import torch
from accelerate import Accelerator
from accelerate.logging import get_logger
from accelerate.utils import set_seed
from datasets import load_dataset
from huggingface_hub import HfApi
from torch.utils.data import DataLoader
from tqdm.auto import tqdm
import transformers
from transformers import (
CONFIG_MAPPING,
MODEL_MAPPING,
AutoConfig,
AutoModelForMultipleChoice,
AutoTokenizer,
PreTrainedTokenizerBase,
SchedulerType,
default_data_collator,
get_scheduler,
)
from transformers.utils import PaddingStrategy, check_min_version, send_example_telemetry
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.45.0.dev0")
logger = get_logger(__name__)
# You should update this to your particular problem to have better documentation of `model_type`
MODEL_CONFIG_CLASSES = list(MODEL_MAPPING.keys())
MODEL_TYPES = tuple(conf.model_type for conf in MODEL_CONFIG_CLASSES)
def parse_args():
parser = argparse.ArgumentParser(description="Finetune a transformers model on a multiple choice task")
parser.add_argument(
"--dataset_name",
type=str,
default=None,
help="The name of the dataset to use (via the datasets library).",
)
parser.add_argument(
"--dataset_config_name",
type=str,
default=None,
help="The configuration name of the dataset to use (via the datasets library).",
)
parser.add_argument(
"--train_file", type=str, default=None, help="A csv or a json file containing the training data."
)
parser.add_argument(
"--validation_file", type=str, default=None, help="A csv or a json file containing the validation data."
)
parser.add_argument(
"--max_seq_length",
type=int,
default=128,
help=(
"The maximum total input sequence length after tokenization. Sequences longer than this will be truncated,"
" sequences shorter will be padded if `--pad_to_max_length` is passed."
),
)
parser.add_argument(
"--pad_to_max_length",
action="store_true",
help="If passed, pad all samples to `max_length`. Otherwise, dynamic padding is used.",
)
parser.add_argument(
"--model_name_or_path",
type=str,
help="Path to pretrained model or model identifier from huggingface.co/models.",
required=False,
)
parser.add_argument(
"--config_name",
type=str,
default=None,
help="Pretrained config name or path if not the same as model_name",
)
parser.add_argument(
"--tokenizer_name",
type=str,
default=None,
help="Pretrained tokenizer name or path if not the same as model_name",
)
parser.add_argument(
"--use_slow_tokenizer",
action="store_true",
help="If passed, will use a slow tokenizer (not backed by the 🤗 Tokenizers library).",
)
parser.add_argument(
"--per_device_train_batch_size",
type=int,
default=8,
help="Batch size (per device) for the training dataloader.",
)
parser.add_argument(
"--per_device_eval_batch_size",
type=int,
default=8,
help="Batch size (per device) for the evaluation dataloader.",
)
parser.add_argument(
"--learning_rate",
type=float,
default=5e-5,
help="Initial learning rate (after the potential warmup period) to use.",
)
parser.add_argument("--weight_decay", type=float, default=0.0, help="Weight decay to use.")
parser.add_argument("--num_train_epochs", type=int, default=3, help="Total number of training epochs to perform.")
parser.add_argument(
"--max_train_steps",
type=int,
default=None,
help="Total number of training steps to perform. If provided, overrides num_train_epochs.",
)
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.",
)
parser.add_argument(
"--lr_scheduler_type",
type=SchedulerType,
default="linear",
help="The scheduler type to use.",
choices=["linear", "cosine", "cosine_with_restarts", "polynomial", "constant", "constant_with_warmup"],
)
parser.add_argument(
"--num_warmup_steps", type=int, default=0, help="Number of steps for the warmup in the lr scheduler."
)
parser.add_argument("--output_dir", type=str, default=None, help="Where to store the final model.")
parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
parser.add_argument(
"--model_type",
type=str,
default=None,
help="Model type to use if training from scratch.",
choices=MODEL_TYPES,
)
parser.add_argument(
"--debug",
action="store_true",
help="Activate debug mode and run training only with a subset of data.",
)
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
parser.add_argument(
"--hub_model_id", type=str, help="The name of the repository to keep in sync with the local `output_dir`."
)
parser.add_argument("--hub_token", type=str, help="The token to use to push to the Model Hub.")
parser.add_argument(
"--trust_remote_code",
action="store_true",
help=(
"Whether to trust the execution of code from datasets/models defined on the Hub."
" This option should only be set to `True` for repositories you trust and in which you have read the"
" code, as it will execute code present on the Hub on your local machine."
),
)
parser.add_argument(
"--checkpointing_steps",
type=str,
default=None,
help="Whether the various states should be saved at the end of every n steps, or 'epoch' for each epoch.",
)
parser.add_argument(
"--resume_from_checkpoint",
type=str,
default=None,
help="If the training should continue from a checkpoint folder.",
)
parser.add_argument(
"--with_tracking",
action="store_true",
help="Whether to enable experiment trackers for logging.",
)
parser.add_argument(
"--report_to",
type=str,
default="all",
help=(
'The integration to report the results and logs to. Supported platforms are `"tensorboard"`,'
' `"wandb"`, `"comet_ml"` and `"clearml"`. Use `"all"` (default) to report to all integrations. '
"Only applicable when `--with_tracking` is passed."
),
)
args = parser.parse_args()
if args.push_to_hub:
assert args.output_dir is not None, "Need an `output_dir` to create a repo when `--push_to_hub` is passed."
return args
@dataclass
class DataCollatorForMultipleChoice:
"""
Data collator that will dynamically pad the inputs for multiple choice received.
Args:
tokenizer ([`PreTrainedTokenizer`] or [`PreTrainedTokenizerFast`]):
The tokenizer used for encoding the data.
padding (`bool`, `str` or [`~utils.PaddingStrategy`], *optional*, defaults to `True`):
Select a strategy to pad the returned sequences (according to the model's padding side and padding index)
among:
- `True` or `'longest'`: Pad to the longest sequence in the batch (or no padding if only a single sequence
if provided).
- `'max_length'`: Pad to a maximum length specified with the argument `max_length` or to the maximum
acceptable input length for the model if that argument is not provided.
- `False` or `'do_not_pad'` (default): No padding (i.e., can output a batch with sequences of different
lengths).
max_length (`int`, *optional*):
Maximum length of the returned list and optionally padding length (see above).
pad_to_multiple_of (`int`, *optional*):
If set will pad the sequence to a multiple of the provided value.
This is especially useful to enable the use of Tensor Cores on NVIDIA hardware with compute capability >=
7.5 (Volta).
"""
tokenizer: PreTrainedTokenizerBase
padding: Union[bool, str, PaddingStrategy] = True
max_length: Optional[int] = None
pad_to_multiple_of: Optional[int] = None
def __call__(self, features):
label_name = "label" if "label" in features[0].keys() else "labels"
labels = [feature.pop(label_name) for feature in features]
batch_size = len(features)
num_choices = len(features[0]["input_ids"])
flattened_features = [
[{k: v[i] for k, v in feature.items()} for i in range(num_choices)] for feature in features
]
flattened_features = list(chain(*flattened_features))
batch = self.tokenizer.pad(
flattened_features,
padding=self.padding,
max_length=self.max_length,
pad_to_multiple_of=self.pad_to_multiple_of,
return_tensors="pt",
)
# Un-flatten
batch = {k: v.view(batch_size, num_choices, -1) for k, v in batch.items()}
# Add back labels
batch["labels"] = torch.tensor(labels, dtype=torch.int64)
return batch
def main():
args = parse_args()
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your Python/PyTorch versions.
send_example_telemetry("run_swag_no_trainer", args)
# Initialize the accelerator. We will let the accelerator handle device placement for us in this example.
# If we're using tracking, we also need to initialize it here and it will by default pick up all supported trackers
# in the environment
accelerator_log_kwargs = {}
if args.with_tracking:
accelerator_log_kwargs["log_with"] = args.report_to
accelerator_log_kwargs["project_dir"] = args.output_dir
accelerator = Accelerator(gradient_accumulation_steps=args.gradient_accumulation_steps, **accelerator_log_kwargs)
# Make one log on every process with the configuration for debugging.
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO,
)
logger.info(accelerator.state, main_process_only=False)
if accelerator.is_local_main_process:
datasets.utils.logging.set_verbosity_warning()
transformers.utils.logging.set_verbosity_info()
else:
datasets.utils.logging.set_verbosity_error()
transformers.utils.logging.set_verbosity_error()
# If passed along, set the training seed now.
if args.seed is not None:
set_seed(args.seed)
# Handle the repository creation
if accelerator.is_main_process:
if args.push_to_hub:
# Retrieve of infer repo_name
repo_name = args.hub_model_id
if repo_name is None:
repo_name = Path(args.output_dir).absolute().name
# Create repo and retrieve repo_id
api = HfApi()
repo_id = api.create_repo(repo_name, exist_ok=True, token=args.hub_token).repo_id
with open(os.path.join(args.output_dir, ".gitignore"), "w+") as gitignore:
if "step_*" not in gitignore:
gitignore.write("step_*\n")
if "epoch_*" not in gitignore:
gitignore.write("epoch_*\n")
elif args.output_dir is not None:
os.makedirs(args.output_dir, exist_ok=True)
accelerator.wait_for_everyone()
# Get the datasets: you can either provide your own CSV/JSON/TXT training and evaluation files (see below)
# or just provide the name of one of the public datasets available on the hub at https://huggingface.co/datasets/
# (the dataset will be downloaded automatically from the datasets Hub).
#
# For CSV/JSON files, this script will use the column called 'text' or the first column if no column called
# 'text' is found. You can easily tweak this behavior (see below).
#
# In distributed training, the load_dataset function guarantee that only one local process can concurrently
# download the dataset.
if args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
raw_datasets = load_dataset(
args.dataset_name, args.dataset_config_name, trust_remote_code=args.trust_remote_code
)
else:
data_files = {}
if args.train_file is not None:
data_files["train"] = args.train_file
extension = args.train_file.split(".")[-1]
if args.validation_file is not None:
data_files["validation"] = args.validation_file
extension = args.validation_file.split(".")[-1]
raw_datasets = load_dataset(extension, data_files=data_files)
# Trim a number of training examples
if args.debug:
for split in raw_datasets.keys():
raw_datasets[split] = raw_datasets[split].select(range(100))
# See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
# https://huggingface.co/docs/datasets/loading_datasets.
if raw_datasets["train"] is not None:
column_names = raw_datasets["train"].column_names
else:
column_names = raw_datasets["validation"].column_names
# When using your own dataset or a different dataset from swag, you will probably need to change this.
ending_names = [f"ending{i}" for i in range(4)]
context_name = "sent1"
question_header_name = "sent2"
label_column_name = "label" if "label" in column_names else "labels"
# Load pretrained model and tokenizer
#
# In distributed training, the .from_pretrained methods guarantee that only one local process can concurrently
# download model & vocab.
if args.config_name:
config = AutoConfig.from_pretrained(args.model_name_or_path, trust_remote_code=args.trust_remote_code)
elif args.model_name_or_path:
config = AutoConfig.from_pretrained(args.model_name_or_path, trust_remote_code=args.trust_remote_code)
else:
config = CONFIG_MAPPING[args.model_type]()
logger.warning("You are instantiating a new config instance from scratch.")
if args.tokenizer_name:
tokenizer = AutoTokenizer.from_pretrained(
args.tokenizer_name, use_fast=not args.use_slow_tokenizer, trust_remote_code=args.trust_remote_code
)
elif args.model_name_or_path:
tokenizer = AutoTokenizer.from_pretrained(
args.model_name_or_path, use_fast=not args.use_slow_tokenizer, trust_remote_code=args.trust_remote_code
)
else:
raise ValueError(
"You are instantiating a new tokenizer from scratch. This is not supported by this script. "
"You can do it from another script, save it, and load it from here, using --tokenizer_name."
)
if args.model_name_or_path:
model = AutoModelForMultipleChoice.from_pretrained(
args.model_name_or_path,
from_tf=bool(".ckpt" in args.model_name_or_path),
config=config,
trust_remote_code=args.trust_remote_code,
)
else:
logger.info("Training new model from scratch")
model = AutoModelForMultipleChoice.from_config(config, trust_remote_code=args.trust_remote_code)
# We resize the embeddings only when necessary to avoid index errors. If you are creating a model from scratch
# on a small vocab and want a smaller embedding size, remove this test.
embedding_size = model.get_input_embeddings().weight.shape[0]
if len(tokenizer) > embedding_size:
model.resize_token_embeddings(len(tokenizer))
# Preprocessing the datasets.
# First we tokenize all the texts.
padding = "max_length" if args.pad_to_max_length else False
def preprocess_function(examples):
first_sentences = [[context] * 4 for context in examples[context_name]]
question_headers = examples[question_header_name]
second_sentences = [
[f"{header} {examples[end][i]}" for end in ending_names] for i, header in enumerate(question_headers)
]
labels = examples[label_column_name]
# Flatten out
first_sentences = list(chain(*first_sentences))
second_sentences = list(chain(*second_sentences))
# Tokenize
tokenized_examples = tokenizer(
first_sentences,
second_sentences,
max_length=args.max_seq_length,
padding=padding,
truncation=True,
)
# Un-flatten
tokenized_inputs = {k: [v[i : i + 4] for i in range(0, len(v), 4)] for k, v in tokenized_examples.items()}
tokenized_inputs["labels"] = labels
return tokenized_inputs
with accelerator.main_process_first():
processed_datasets = raw_datasets.map(
preprocess_function, batched=True, remove_columns=raw_datasets["train"].column_names
)
train_dataset = processed_datasets["train"]
eval_dataset = processed_datasets["validation"]
# Log a few random samples from the training set:
for index in random.sample(range(len(train_dataset)), 3):
logger.info(f"Sample {index} of the training set: {train_dataset[index]}.")
# DataLoaders creation:
if args.pad_to_max_length:
# If padding was already done ot max length, we use the default data collator that will just convert everything
# to tensors.
data_collator = default_data_collator
else:
# Otherwise, `DataCollatorWithPadding` will apply dynamic padding for us (by padding to the maximum length of
# the samples passed). When using mixed precision, we add `pad_to_multiple_of=8` to pad all tensors to multiple
# of 8s, which will enable the use of Tensor Cores on NVIDIA hardware with compute capability >= 7.5 (Volta).
data_collator = DataCollatorForMultipleChoice(
tokenizer, pad_to_multiple_of=(8 if accelerator.use_fp16 else None)
)
train_dataloader = DataLoader(
train_dataset, shuffle=True, collate_fn=data_collator, batch_size=args.per_device_train_batch_size
)
eval_dataloader = DataLoader(eval_dataset, collate_fn=data_collator, batch_size=args.per_device_eval_batch_size)
# Optimizer
# Split weights in two groups, one with weight decay and the other not.
no_decay = ["bias", "LayerNorm.weight"]
optimizer_grouped_parameters = [
{
"params": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay)],
"weight_decay": args.weight_decay,
},
{
"params": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay)],
"weight_decay": 0.0,
},
]
optimizer = torch.optim.AdamW(optimizer_grouped_parameters, lr=args.learning_rate)
# Use the device given by the `accelerator` object.
device = accelerator.device
model.to(device)
# Scheduler and math around the number of training steps.
overrode_max_train_steps = False
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if args.max_train_steps is None:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
overrode_max_train_steps = True
lr_scheduler = get_scheduler(
name=args.lr_scheduler_type,
optimizer=optimizer,
num_warmup_steps=args.num_warmup_steps * accelerator.num_processes,
num_training_steps=args.max_train_steps
if overrode_max_train_steps
else args.max_train_steps * accelerator.num_processes,
)
# Prepare everything with our `accelerator`.
model, optimizer, train_dataloader, eval_dataloader, lr_scheduler = accelerator.prepare(
model, optimizer, train_dataloader, eval_dataloader, lr_scheduler
)
# We need to recalculate our total training steps as the size of the training dataloader may have changed.
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if overrode_max_train_steps:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
# Afterwards we recalculate our number of training epochs
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
# Figure out how many steps we should save the Accelerator states
checkpointing_steps = args.checkpointing_steps
if checkpointing_steps is not None and checkpointing_steps.isdigit():
checkpointing_steps = int(checkpointing_steps)
# We need to initialize the trackers we use, and also store our configuration.
# The trackers initializes automatically on the main process.
if args.with_tracking:
experiment_config = vars(args)
# TensorBoard cannot log Enums, need the raw value
experiment_config["lr_scheduler_type"] = experiment_config["lr_scheduler_type"].value
accelerator.init_trackers("swag_no_trainer", experiment_config)
# Metrics
metric = evaluate.load("accuracy")
# Train!
total_batch_size = args.per_device_train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
logger.info("***** Running training *****")
logger.info(f" Num examples = {len(train_dataset)}")
logger.info(f" Num Epochs = {args.num_train_epochs}")
logger.info(f" Instantaneous batch size per device = {args.per_device_train_batch_size}")
logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
logger.info(f" Gradient Accumulation steps = {args.gradient_accumulation_steps}")
logger.info(f" Total optimization steps = {args.max_train_steps}")
# Only show the progress bar once on each machine.
progress_bar = tqdm(range(args.max_train_steps), disable=not accelerator.is_local_main_process)
completed_steps = 0
starting_epoch = 0
# Potentially load in the weights and states from a previous save
if args.resume_from_checkpoint:
if args.resume_from_checkpoint is not None or args.resume_from_checkpoint != "":
checkpoint_path = args.resume_from_checkpoint
path = os.path.basename(args.resume_from_checkpoint)
else:
# Get the most recent checkpoint
dirs = [f.name for f in os.scandir(os.getcwd()) if f.is_dir()]
dirs.sort(key=os.path.getctime)
path = dirs[-1] # Sorts folders by date modified, most recent checkpoint is the last
checkpoint_path = path
path = os.path.basename(checkpoint_path)
accelerator.print(f"Resumed from checkpoint: {checkpoint_path}")
accelerator.load_state(checkpoint_path)
# Extract `epoch_{i}` or `step_{i}`
training_difference = os.path.splitext(path)[0]
if "epoch" in training_difference:
starting_epoch = int(training_difference.replace("epoch_", "")) + 1
resume_step = None
completed_steps = starting_epoch * num_update_steps_per_epoch
else:
# need to multiply `gradient_accumulation_steps` to reflect real steps
resume_step = int(training_difference.replace("step_", "")) * args.gradient_accumulation_steps
starting_epoch = resume_step // len(train_dataloader)
completed_steps = resume_step // args.gradient_accumulation_steps
resume_step -= starting_epoch * len(train_dataloader)
# update the progress_bar if load from checkpoint
progress_bar.update(completed_steps)
for epoch in range(starting_epoch, args.num_train_epochs):
model.train()
if args.with_tracking:
total_loss = 0
if args.resume_from_checkpoint and epoch == starting_epoch and resume_step is not None:
# We skip the first `n` batches in the dataloader when resuming from a checkpoint
active_dataloader = accelerator.skip_first_batches(train_dataloader, resume_step)
else:
active_dataloader = train_dataloader
for step, batch in enumerate(active_dataloader):
with accelerator.accumulate(model):
outputs = model(**batch)
loss = outputs.loss
# We keep track of the loss at each epoch
if args.with_tracking:
total_loss += loss.detach().float()
accelerator.backward(loss)
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
# Checks if the accelerator has performed an optimization step behind the scenes
if accelerator.sync_gradients:
progress_bar.update(1)
completed_steps += 1
if isinstance(checkpointing_steps, int):
if completed_steps % checkpointing_steps == 0 and accelerator.sync_gradients:
output_dir = f"step_{completed_steps}"
if args.output_dir is not None:
output_dir = os.path.join(args.output_dir, output_dir)
accelerator.save_state(output_dir)
if completed_steps >= args.max_train_steps:
break
model.eval()
for step, batch in enumerate(eval_dataloader):
with torch.no_grad():
outputs = model(**batch)
predictions = outputs.logits.argmax(dim=-1)
predictions, references = accelerator.gather_for_metrics((predictions, batch["labels"]))
metric.add_batch(
predictions=predictions,
references=references,
)
eval_metric = metric.compute()
accelerator.print(f"epoch {epoch}: {eval_metric}")
if args.with_tracking:
accelerator.log(
{
"accuracy": eval_metric,
"train_loss": total_loss.item() / len(train_dataloader),
"epoch": epoch,
"step": completed_steps,
},
step=completed_steps,
)
if args.push_to_hub and epoch < args.num_train_epochs - 1:
accelerator.wait_for_everyone()
unwrapped_model = accelerator.unwrap_model(model)
unwrapped_model.save_pretrained(
args.output_dir, is_main_process=accelerator.is_main_process, save_function=accelerator.save
)
if accelerator.is_main_process:
tokenizer.save_pretrained(args.output_dir)
api.upload_folder(
commit_message=f"Training in progress epoch {epoch}",
folder_path=args.output_dir,
repo_id=repo_id,
repo_type="model",
token=args.hub_token,
)
if args.checkpointing_steps == "epoch":
output_dir = f"epoch_{epoch}"
if args.output_dir is not None:
output_dir = os.path.join(args.output_dir, output_dir)
accelerator.save_state(output_dir)
if args.with_tracking:
accelerator.end_training()
if args.output_dir is not None:
accelerator.wait_for_everyone()
unwrapped_model = accelerator.unwrap_model(model)
unwrapped_model.save_pretrained(
args.output_dir, is_main_process=accelerator.is_main_process, save_function=accelerator.save
)
if accelerator.is_main_process:
tokenizer.save_pretrained(args.output_dir)
if args.push_to_hub:
api.upload_folder(
commit_message="End of training",
folder_path=args.output_dir,
repo_id=repo_id,
repo_type="model",
token=args.hub_token,
)
all_results = {f"eval_{k}": v for k, v in eval_metric.items()}
with open(os.path.join(args.output_dir, "all_results.json"), "w") as f:
json.dump(all_results, f)
if __name__ == "__main__":
main()
|
transformers/examples/pytorch/multiple-choice/run_swag_no_trainer.py/0
|
{
"file_path": "transformers/examples/pytorch/multiple-choice/run_swag_no_trainer.py",
"repo_id": "transformers",
"token_count": 12102
}
| 311
|
<!---
Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
# Semantic segmentation examples
This directory contains 2 scripts that showcase how to fine-tune any model supported by the [`AutoModelForSemanticSegmentation` API](https://huggingface.co/docs/transformers/main/en/model_doc/auto#transformers.AutoModelForSemanticSegmentation) (such as [SegFormer](https://huggingface.co/docs/transformers/main/en/model_doc/segformer), [BEiT](https://huggingface.co/docs/transformers/main/en/model_doc/beit), [DPT](https://huggingface.co/docs/transformers/main/en/model_doc/dpt)) using PyTorch.
Content:
* [Note on custom data](#note-on-custom-data)
* [PyTorch version, Trainer](#pytorch-version-trainer)
* [PyTorch version, no Trainer](#pytorch-version-no-trainer)
* [Reload and perform inference](#reload-and-perform-inference)
* [Important notes](#important-notes)
## Note on custom data
In case you'd like to use the script with custom data, there are 2 things required: 1) creating a DatasetDict 2) creating an id2label mapping. Below, these are explained in more detail.
### Creating a `DatasetDict`
The script assumes that you have a `DatasetDict` with 2 columns, "image" and "label", both of type [Image](https://huggingface.co/docs/datasets/package_reference/main_classes#datasets.Image). This can be created as follows:
```python
from datasets import Dataset, DatasetDict, Image
# your images can of course have a different extension
# semantic segmentation maps are typically stored in the png format
image_paths_train = ["path/to/image_1.jpg/jpg", "path/to/image_2.jpg/jpg", ..., "path/to/image_n.jpg/jpg"]
label_paths_train = ["path/to/annotation_1.png", "path/to/annotation_2.png", ..., "path/to/annotation_n.png"]
# same for validation
# image_paths_validation = [...]
# label_paths_validation = [...]
def create_dataset(image_paths, label_paths):
dataset = Dataset.from_dict({"image": sorted(image_paths),
"label": sorted(label_paths)})
dataset = dataset.cast_column("image", Image())
dataset = dataset.cast_column("label", Image())
return dataset
# step 1: create Dataset objects
train_dataset = create_dataset(image_paths_train, label_paths_train)
validation_dataset = create_dataset(image_paths_validation, label_paths_validation)
# step 2: create DatasetDict
dataset = DatasetDict({
"train": train_dataset,
"validation": validation_dataset,
}
)
# step 3: push to hub (assumes you have ran the huggingface-cli login command in a terminal/notebook)
dataset.push_to_hub("name of repo on the hub")
# optionally, you can push to a private repo on the hub
# dataset.push_to_hub("name of repo on the hub", private=True)
```
An example of such a dataset can be seen at [nielsr/ade20k-demo](https://huggingface.co/datasets/nielsr/ade20k-demo).
### Creating an id2label mapping
Besides that, the script also assumes the existence of an `id2label.json` file in the repo, containing a mapping from integers to actual class names. An example of that can be seen [here](https://huggingface.co/datasets/nielsr/ade20k-demo/blob/main/id2label.json). This can be created in Python as follows:
```python
import json
# simple example
id2label = {0: 'cat', 1: 'dog'}
with open('id2label.json', 'w') as fp:
json.dump(id2label, fp)
```
You can easily upload this by clicking on "Add file" in the "Files and versions" tab of your repo on the hub.
## PyTorch version, Trainer
Based on the script [`run_semantic_segmentation.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/semantic-segmentation/run_semantic_segmentation.py).
The script leverages the [🤗 Trainer API](https://huggingface.co/docs/transformers/main_classes/trainer) to automatically take care of the training for you, running on distributed environments right away.
Here we show how to fine-tune a [SegFormer](https://huggingface.co/nvidia/mit-b0) model on the [segments/sidewalk-semantic](https://huggingface.co/datasets/segments/sidewalk-semantic) dataset:
In order to use `segments/sidewalk-semantic`:
- Log in to Hugging Face with `huggingface-cli login` (token can be accessed [here](https://huggingface.co/settings/tokens)).
- Accept terms of use for `sidewalk-semantic` on [dataset page](https://huggingface.co/datasets/segments/sidewalk-semantic).
```bash
python run_semantic_segmentation.py \
--model_name_or_path nvidia/mit-b0 \
--dataset_name segments/sidewalk-semantic \
--output_dir ./segformer_outputs/ \
--remove_unused_columns False \
--do_train \
--do_eval \
--push_to_hub \
--push_to_hub_model_id segformer-finetuned-sidewalk-10k-steps \
--max_steps 10000 \
--learning_rate 0.00006 \
--lr_scheduler_type polynomial \
--per_device_train_batch_size 8 \
--per_device_eval_batch_size 8 \
--logging_strategy steps \
--logging_steps 100 \
--eval_strategy epoch \
--save_strategy epoch \
--seed 1337
```
The resulting model can be seen here: https://huggingface.co/nielsr/segformer-finetuned-sidewalk-10k-steps. The corresponding Weights and Biases report [here](https://wandb.ai/nielsrogge/huggingface/reports/SegFormer-fine-tuning--VmlldzoxODY5NTQ2). Note that it's always advised to check the original paper to know the details regarding training hyperparameters. E.g. from the SegFormer paper:
> We trained the models using AdamW optimizer for 160K iterations on ADE20K, Cityscapes, and 80K iterations on COCO-Stuff. (...) We used a batch size of 16 for ADE20K and COCO-Stuff, and a batch size of 8 for Cityscapes. The learning rate was set to an initial value of 0.00006 and then used a “poly” LR schedule with factor 1.0 by default.
Note that you can replace the model and dataset by simply setting the `model_name_or_path` and `dataset_name` arguments respectively, with any model or dataset from the [hub](https://huggingface.co/). For an overview of all possible arguments, we refer to the [docs](https://huggingface.co/docs/transformers/main_classes/trainer#transformers.TrainingArguments) of the `TrainingArguments`, which can be passed as flags.
## PyTorch version, no Trainer
Based on the script [`run_semantic_segmentation_no_trainer.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/semantic-segmentation/run_semantic_segmentation.py).
The script leverages [🤗 `Accelerate`](https://github.com/huggingface/accelerate), which allows to write your own training loop in PyTorch, but have it run instantly on any (distributed) environment, including CPU, multi-CPU, GPU, multi-GPU and TPU. It also supports mixed precision.
First, run:
```bash
accelerate config
```
and reply to the questions asked regarding the environment on which you'd like to train. Then
```bash
accelerate test
```
that will check everything is ready for training. Finally, you can launch training with
```bash
accelerate launch run_semantic_segmentation_no_trainer.py --output_dir segformer-finetuned-sidewalk --with_tracking --push_to_hub
```
and boom, you're training, possibly on multiple GPUs, logging everything to all trackers found in your environment (like Weights and Biases, Tensorboard) and regularly pushing your model to the hub (with the repo name being equal to `args.output_dir` at your HF username) 🤗
With the default settings, the script fine-tunes a [SegFormer]((https://huggingface.co/docs/transformers/main/en/model_doc/segformer)) model on the [segments/sidewalk-semantic](https://huggingface.co/datasets/segments/sidewalk-semantic) dataset.
The resulting model can be seen here: https://huggingface.co/nielsr/segformer-finetuned-sidewalk. Note that the script usually requires quite a few epochs to achieve great results, e.g. the SegFormer authors fine-tuned their model for 160k steps (batches) on [`scene_parse_150`](https://huggingface.co/datasets/scene_parse_150).
## Reload and perform inference
This means that after training, you can easily load your trained model as follows:
```python
from transformers import AutoImageProcessor, AutoModelForSemanticSegmentation
model_name = "name_of_repo_on_the_hub_or_path_to_local_folder"
image_processor = AutoImageProcessor.from_pretrained(model_name)
model = AutoModelForSemanticSegmentation.from_pretrained(model_name)
```
and perform inference as follows:
```python
from PIL import Image
import requests
import torch
url = "http://images.cocodataset.org/val2017/000000039769.jpg"
image = Image.open(requests.get(url, stream=True).raw)
# prepare image for the model
inputs = image_processor(images=image, return_tensors="pt")
with torch.no_grad():
outputs = model(**inputs)
logits = outputs.logits
# rescale logits to original image size
logits = nn.functional.interpolate(outputs.logits.detach().cpu(),
size=image.size[::-1], # (height, width)
mode='bilinear',
align_corners=False)
predicted = logits.argmax(1)
```
For visualization of the segmentation maps, we refer to the [example notebook](https://github.com/NielsRogge/Transformers-Tutorials/blob/master/SegFormer/Segformer_inference_notebook.ipynb).
## Important notes
Some datasets, like [`scene_parse_150`](https://huggingface.co/datasets/scene_parse_150), contain a "background" label that is not part of the classes. The Scene Parse 150 dataset for instance contains labels between 0 and 150, with 0 being the background class, and 1 to 150 being actual class names (like "tree", "person", etc.). For these kind of datasets, one replaces the background label (0) by 255, which is the `ignore_index` of the PyTorch model's loss function, and reduces all labels by 1. This way, the `labels` are PyTorch tensors containing values between 0 and 149, and 255 for all background/padding.
In case you're training on such a dataset, make sure to set the ``do_reduce_labels`` flag, which will take care of this.
|
transformers/examples/pytorch/semantic-segmentation/README.md/0
|
{
"file_path": "transformers/examples/pytorch/semantic-segmentation/README.md",
"repo_id": "transformers",
"token_count": 3502
}
| 312
|
# coding=utf-8
# Copyright 2018 HuggingFace Inc..
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import json
import logging
import os
import shutil
import sys
import tempfile
import unittest
from unittest import mock
from accelerate.utils import write_basic_config
from transformers.testing_utils import (
TestCasePlus,
backend_device_count,
run_command,
slow,
torch_device,
)
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger()
def get_setup_file():
parser = argparse.ArgumentParser()
parser.add_argument("-f")
args = parser.parse_args()
return args.f
def get_results(output_dir):
results = {}
path = os.path.join(output_dir, "all_results.json")
if os.path.exists(path):
with open(path, "r") as f:
results = json.load(f)
else:
raise ValueError(f"can't find {path}")
return results
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
class ExamplesTestsNoTrainer(TestCasePlus):
@classmethod
def setUpClass(cls):
# Write Accelerate config, will pick up on CPU, GPU, and multi-GPU
cls.tmpdir = tempfile.mkdtemp()
cls.configPath = os.path.join(cls.tmpdir, "default_config.yml")
write_basic_config(save_location=cls.configPath)
cls._launch_args = ["accelerate", "launch", "--config_file", cls.configPath]
@classmethod
def tearDownClass(cls):
shutil.rmtree(cls.tmpdir)
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_glue_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/text-classification/run_glue_no_trainer.py
--model_name_or_path distilbert/distilbert-base-uncased
--output_dir {tmp_dir}
--train_file ./tests/fixtures/tests_samples/MRPC/train.csv
--validation_file ./tests/fixtures/tests_samples/MRPC/dev.csv
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--learning_rate=1e-4
--seed=42
--num_warmup_steps=2
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_accuracy"], 0.75)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "glue_no_trainer")))
@unittest.skip("Zach is working on this.")
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_clm_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/language-modeling/run_clm_no_trainer.py
--model_name_or_path distilbert/distilgpt2
--train_file ./tests/fixtures/sample_text.txt
--validation_file ./tests/fixtures/sample_text.txt
--block_size 128
--per_device_train_batch_size 5
--per_device_eval_batch_size 5
--num_train_epochs 2
--output_dir {tmp_dir}
--checkpointing_steps epoch
--with_tracking
""".split()
if backend_device_count(torch_device) > 1:
# Skipping because there are not enough batches to train the model + would need a drop_last to work.
return
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertLess(result["perplexity"], 100)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "clm_no_trainer")))
@unittest.skip("Zach is working on this.")
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_mlm_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/language-modeling/run_mlm_no_trainer.py
--model_name_or_path distilbert/distilroberta-base
--train_file ./tests/fixtures/sample_text.txt
--validation_file ./tests/fixtures/sample_text.txt
--output_dir {tmp_dir}
--num_train_epochs=1
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertLess(result["perplexity"], 42)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "mlm_no_trainer")))
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_ner_no_trainer(self):
# with so little data distributed training needs more epochs to get the score on par with 0/1 gpu
epochs = 7 if backend_device_count(torch_device) > 1 else 2
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/token-classification/run_ner_no_trainer.py
--model_name_or_path google-bert/bert-base-uncased
--train_file tests/fixtures/tests_samples/conll/sample.json
--validation_file tests/fixtures/tests_samples/conll/sample.json
--output_dir {tmp_dir}
--learning_rate=2e-4
--per_device_train_batch_size=2
--per_device_eval_batch_size=2
--num_train_epochs={epochs}
--seed 7
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_accuracy"], 0.75)
self.assertLess(result["train_loss"], 0.6)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "ner_no_trainer")))
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_squad_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/question-answering/run_qa_no_trainer.py
--model_name_or_path google-bert/bert-base-uncased
--version_2_with_negative
--train_file tests/fixtures/tests_samples/SQUAD/sample.json
--validation_file tests/fixtures/tests_samples/SQUAD/sample.json
--output_dir {tmp_dir}
--seed=42
--max_train_steps=10
--num_warmup_steps=2
--learning_rate=2e-4
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
# Because we use --version_2_with_negative the testing script uses SQuAD v2 metrics.
self.assertGreaterEqual(result["eval_f1"], 28)
self.assertGreaterEqual(result["eval_exact"], 28)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "qa_no_trainer")))
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_swag_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/multiple-choice/run_swag_no_trainer.py
--model_name_or_path google-bert/bert-base-uncased
--train_file tests/fixtures/tests_samples/swag/sample.json
--validation_file tests/fixtures/tests_samples/swag/sample.json
--output_dir {tmp_dir}
--max_train_steps=20
--num_warmup_steps=2
--learning_rate=2e-4
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_accuracy"], 0.8)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "swag_no_trainer")))
@slow
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_summarization_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/summarization/run_summarization_no_trainer.py
--model_name_or_path google-t5/t5-small
--train_file tests/fixtures/tests_samples/xsum/sample.json
--validation_file tests/fixtures/tests_samples/xsum/sample.json
--output_dir {tmp_dir}
--max_train_steps=50
--num_warmup_steps=8
--learning_rate=2e-4
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_rouge1"], 10)
self.assertGreaterEqual(result["eval_rouge2"], 2)
self.assertGreaterEqual(result["eval_rougeL"], 7)
self.assertGreaterEqual(result["eval_rougeLsum"], 7)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "summarization_no_trainer")))
@slow
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_translation_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/translation/run_translation_no_trainer.py
--model_name_or_path sshleifer/student_marian_en_ro_6_1
--source_lang en
--target_lang ro
--train_file tests/fixtures/tests_samples/wmt16/sample.json
--validation_file tests/fixtures/tests_samples/wmt16/sample.json
--output_dir {tmp_dir}
--max_train_steps=50
--num_warmup_steps=8
--num_beams=6
--learning_rate=3e-3
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--source_lang en_XX
--target_lang ro_RO
--checkpointing_steps epoch
--with_tracking
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_bleu"], 30)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "epoch_0")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "translation_no_trainer")))
@slow
def test_run_semantic_segmentation_no_trainer(self):
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/semantic-segmentation/run_semantic_segmentation_no_trainer.py
--dataset_name huggingface/semantic-segmentation-test-sample
--output_dir {tmp_dir}
--max_train_steps=10
--num_warmup_steps=2
--learning_rate=2e-4
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--checkpointing_steps epoch
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["eval_overall_accuracy"], 0.10)
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_image_classification_no_trainer(self):
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/image-classification/run_image_classification_no_trainer.py
--model_name_or_path google/vit-base-patch16-224-in21k
--dataset_name hf-internal-testing/cats_vs_dogs_sample
--trust_remote_code
--learning_rate 1e-4
--per_device_train_batch_size 2
--per_device_eval_batch_size 1
--max_train_steps 2
--train_val_split 0.1
--seed 42
--output_dir {tmp_dir}
--with_tracking
--checkpointing_steps 1
--label_column_name labels
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
# The base model scores a 25%
self.assertGreaterEqual(result["eval_accuracy"], 0.4)
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "step_1")))
self.assertTrue(os.path.exists(os.path.join(tmp_dir, "image_classification_no_trainer")))
@slow
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_object_detection_no_trainer(self):
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/object-detection/run_object_detection_no_trainer.py
--model_name_or_path qubvel-hf/detr-resnet-50-finetuned-10k-cppe5
--dataset_name qubvel-hf/cppe-5-sample
--output_dir {tmp_dir}
--max_train_steps=10
--num_warmup_steps=2
--learning_rate=1e-6
--per_device_train_batch_size=2
--per_device_eval_batch_size=1
--checkpointing_steps epoch
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["test_map"], 0.10)
@slow
@mock.patch.dict(os.environ, {"WANDB_MODE": "offline", "DVCLIVE_TEST": "true"})
def test_run_instance_segmentation_no_trainer(self):
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
tmp_dir = self.get_auto_remove_tmp_dir()
testargs = f"""
{self.examples_dir}/pytorch/instance-segmentation/run_instance_segmentation_no_trainer.py
--model_name_or_path qubvel-hf/finetune-instance-segmentation-ade20k-mini-mask2former
--output_dir {tmp_dir}
--dataset_name qubvel-hf/ade20k-nano
--do_reduce_labels
--image_height 256
--image_width 256
--num_train_epochs 1
--per_device_train_batch_size 2
--per_device_eval_batch_size 1
--seed 1234
""".split()
run_command(self._launch_args + testargs)
result = get_results(tmp_dir)
self.assertGreaterEqual(result["test_map"], 0.1)
|
transformers/examples/pytorch/test_accelerate_examples.py/0
|
{
"file_path": "transformers/examples/pytorch/test_accelerate_examples.py",
"repo_id": "transformers",
"token_count": 7396
}
| 313
|
# Examples
In this folder we showcase some examples to use code models for downstream tasks.
## Complexity prediction
In this task we want to predict the complexity of Java programs in [CodeComplex](https://huggingface.co/datasets/codeparrot/codecomplex) dataset. Using Hugging Face `trainer`, we finetuned [multilingual CodeParrot](https://huggingface.co/codeparrot/codeparrot-small-multi) and [UniXcoder](https://huggingface.co/microsoft/unixcoder-base-nine) on it, and we used the latter to build this Java complexity prediction [space](https://huggingface.co/spaces/codeparrot/code-complexity-predictor) on Hugging Face hub.
To fine-tune a model on this dataset you can use the following commands:
```python
python train_complexity_predictor.py \
--model_ckpt microsoft/unixcoder-base-nine \
--num_epochs 60 \
--num_warmup_steps 10 \
--batch_size 8 \
--learning_rate 5e-4
```
## Code generation: text to python
In this task we want to train a model to generate code from english text. We finetuned Codeparrot-small on [github-jupyter-text-to-code](https://huggingface.co/datasets/codeparrot/github-jupyter-text-to-code), a dataset where the samples are a succession of docstrings and their Python code, originally extracted from Jupyter notebooks parsed in this [dataset](https://huggingface.co/datasets/codeparrot/github-jupyter-parsed).
To fine-tune a model on this dataset we use the same [script](https://github.com/huggingface/transformers/blob/main/examples/research_projects/codeparrot/scripts/codeparrot_training.py) as the pretraining of codeparrot:
```python
accelerate launch scripts/codeparrot_training.py \
--model_ckpt codeparrot/codeparrot-small \
--dataset_name_train codeparrot/github-jupyter-text-to-code \
--dataset_name_valid codeparrot/github-jupyter-text-to-code \
--train_batch_size 12 \
--valid_batch_size 12 \
--learning_rate 5e-4 \
--num_warmup_steps 100 \
--gradient_accumulation 1 \
--gradient_checkpointing False \
--max_train_steps 3000 \
--save_checkpoint_steps 200 \
--save_dir jupyter-text-to-python
```
## Code explanation: python to text
In this task we want to train a model to explain python code. We finetuned Codeparrot-small on [github-jupyter-code-to-text](https://huggingface.co/datasets/codeparrot/github-jupyter-code-to-text), a dataset where the samples are a succession of Python code and its explanation as a docstring, we just inverted the order of text and code pairs in github-jupyter-code-to-text dataset and added the delimiters "Explanation:" and "End of explanation" inside the doctrings.
To fine-tune a model on this dataset we use the same [script](https://github.com/huggingface/transformers/blob/main/examples/research_projects/codeparrot/scripts/codeparrot_training.py) as the pretraining of codeparrot:
```python
accelerate launch scripts/codeparrot_training.py \
--model_ckpt codeparrot/codeparrot-small \
--dataset_name_train codeparrot/github-jupyter-code-to-text \
--dataset_name_valid codeparrot/github-jupyter-code-to-text \
--train_batch_size 12 \
--valid_batch_size 12 \
--learning_rate 5e-4 \
--num_warmup_steps 100 \
--gradient_accumulation 1 \
--gradient_checkpointing False \
--max_train_steps 3000 \
--save_checkpoint_steps 200 \
--save_dir jupyter-python-to-text
```
|
transformers/examples/research_projects/codeparrot/examples/README.md/0
|
{
"file_path": "transformers/examples/research_projects/codeparrot/examples/README.md",
"repo_id": "transformers",
"token_count": 1170
}
| 314
|
import gym
import numpy as np
import torch
from mujoco_py import GlfwContext
from transformers import DecisionTransformerModel
GlfwContext(offscreen=True) # Create a window to init GLFW.
def get_action(model, states, actions, rewards, returns_to_go, timesteps):
# we don't care about the past rewards in this model
states = states.reshape(1, -1, model.config.state_dim)
actions = actions.reshape(1, -1, model.config.act_dim)
returns_to_go = returns_to_go.reshape(1, -1, 1)
timesteps = timesteps.reshape(1, -1)
if model.config.max_length is not None:
states = states[:, -model.config.max_length :]
actions = actions[:, -model.config.max_length :]
returns_to_go = returns_to_go[:, -model.config.max_length :]
timesteps = timesteps[:, -model.config.max_length :]
# pad all tokens to sequence length
attention_mask = torch.cat(
[torch.zeros(model.config.max_length - states.shape[1]), torch.ones(states.shape[1])]
)
attention_mask = attention_mask.to(dtype=torch.long, device=states.device).reshape(1, -1)
states = torch.cat(
[
torch.zeros(
(states.shape[0], model.config.max_length - states.shape[1], model.config.state_dim),
device=states.device,
),
states,
],
dim=1,
).to(dtype=torch.float32)
actions = torch.cat(
[
torch.zeros(
(actions.shape[0], model.config.max_length - actions.shape[1], model.config.act_dim),
device=actions.device,
),
actions,
],
dim=1,
).to(dtype=torch.float32)
returns_to_go = torch.cat(
[
torch.zeros(
(returns_to_go.shape[0], model.config.max_length - returns_to_go.shape[1], 1),
device=returns_to_go.device,
),
returns_to_go,
],
dim=1,
).to(dtype=torch.float32)
timesteps = torch.cat(
[
torch.zeros(
(timesteps.shape[0], model.config.max_length - timesteps.shape[1]), device=timesteps.device
),
timesteps,
],
dim=1,
).to(dtype=torch.long)
else:
attention_mask = None
_, action_preds, _ = model(
states=states,
actions=actions,
rewards=rewards,
returns_to_go=returns_to_go,
timesteps=timesteps,
attention_mask=attention_mask,
return_dict=False,
)
return action_preds[0, -1]
# build the environment
env = gym.make("Hopper-v3")
state_dim = env.observation_space.shape[0]
act_dim = env.action_space.shape[0]
max_ep_len = 1000
device = "cuda"
scale = 1000.0 # normalization for rewards/returns
TARGET_RETURN = 3600 / scale # evaluation conditioning targets, 3600 is reasonable from the paper LINK
state_mean = np.array(
[
1.311279,
-0.08469521,
-0.5382719,
-0.07201576,
0.04932366,
2.1066856,
-0.15017354,
0.00878345,
-0.2848186,
-0.18540096,
-0.28461286,
]
)
state_std = np.array(
[
0.17790751,
0.05444621,
0.21297139,
0.14530419,
0.6124444,
0.85174465,
1.4515252,
0.6751696,
1.536239,
1.6160746,
5.6072536,
]
)
state_mean = torch.from_numpy(state_mean).to(device=device)
state_std = torch.from_numpy(state_std).to(device=device)
# Create the decision transformer model
model = DecisionTransformerModel.from_pretrained("edbeeching/decision-transformer-gym-hopper-medium")
model = model.to(device)
model.eval()
for ep in range(10):
episode_return, episode_length = 0, 0
state = env.reset()
target_return = torch.tensor(TARGET_RETURN, device=device, dtype=torch.float32).reshape(1, 1)
states = torch.from_numpy(state).reshape(1, state_dim).to(device=device, dtype=torch.float32)
actions = torch.zeros((0, act_dim), device=device, dtype=torch.float32)
rewards = torch.zeros(0, device=device, dtype=torch.float32)
timesteps = torch.tensor(0, device=device, dtype=torch.long).reshape(1, 1)
for t in range(max_ep_len):
env.render()
# add padding
actions = torch.cat([actions, torch.zeros((1, act_dim), device=device)], dim=0)
rewards = torch.cat([rewards, torch.zeros(1, device=device)])
action = get_action(
model,
(states.to(dtype=torch.float32) - state_mean) / state_std,
actions.to(dtype=torch.float32),
rewards.to(dtype=torch.float32),
target_return.to(dtype=torch.float32),
timesteps.to(dtype=torch.long),
)
actions[-1] = action
action = action.detach().cpu().numpy()
state, reward, done, _ = env.step(action)
cur_state = torch.from_numpy(state).to(device=device).reshape(1, state_dim)
states = torch.cat([states, cur_state], dim=0)
rewards[-1] = reward
pred_return = target_return[0, -1] - (reward / scale)
target_return = torch.cat([target_return, pred_return.reshape(1, 1)], dim=1)
timesteps = torch.cat([timesteps, torch.ones((1, 1), device=device, dtype=torch.long) * (t + 1)], dim=1)
episode_return += reward
episode_length += 1
if done:
break
|
transformers/examples/research_projects/decision_transformer/run_decision_transformer.py/0
|
{
"file_path": "transformers/examples/research_projects/decision_transformer/run_decision_transformer.py",
"repo_id": "transformers",
"token_count": 2763
}
| 315
|
# coding=utf-8
# Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team.
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""This is the exact same script as `examples/question-answering/run_squad.py` (as of 2020, January 8th) with an additional and optional step of distillation."""
import argparse
import glob
import logging
import os
import random
import timeit
import numpy as np
import torch
from torch import nn
from torch.utils.data import DataLoader, RandomSampler, SequentialSampler
from torch.utils.data.distributed import DistributedSampler
from tqdm import tqdm, trange
import transformers
from transformers import (
WEIGHTS_NAME,
AdamW,
BertConfig,
BertForQuestionAnswering,
BertTokenizer,
DistilBertConfig,
DistilBertForQuestionAnswering,
DistilBertTokenizer,
RobertaConfig,
RobertaForQuestionAnswering,
RobertaTokenizer,
XLMConfig,
XLMForQuestionAnswering,
XLMTokenizer,
XLNetConfig,
XLNetForQuestionAnswering,
XLNetTokenizer,
get_linear_schedule_with_warmup,
squad_convert_examples_to_features,
)
from transformers.data.metrics.squad_metrics import (
compute_predictions_log_probs,
compute_predictions_logits,
squad_evaluate,
)
from transformers.data.processors.squad import SquadResult, SquadV1Processor, SquadV2Processor
from transformers.trainer_utils import is_main_process
try:
from torch.utils.tensorboard import SummaryWriter
except ImportError:
from tensorboardX import SummaryWriter
logger = logging.getLogger(__name__)
MODEL_CLASSES = {
"bert": (BertConfig, BertForQuestionAnswering, BertTokenizer),
"xlnet": (XLNetConfig, XLNetForQuestionAnswering, XLNetTokenizer),
"xlm": (XLMConfig, XLMForQuestionAnswering, XLMTokenizer),
"distilbert": (DistilBertConfig, DistilBertForQuestionAnswering, DistilBertTokenizer),
"roberta": (RobertaConfig, RobertaForQuestionAnswering, RobertaTokenizer),
}
def set_seed(args):
random.seed(args.seed)
np.random.seed(args.seed)
torch.manual_seed(args.seed)
if args.n_gpu > 0:
torch.cuda.manual_seed_all(args.seed)
def to_list(tensor):
return tensor.detach().cpu().tolist()
def train(args, train_dataset, model, tokenizer, teacher=None):
"""Train the model"""
if args.local_rank in [-1, 0]:
tb_writer = SummaryWriter()
args.train_batch_size = args.per_gpu_train_batch_size * max(1, args.n_gpu)
train_sampler = RandomSampler(train_dataset) if args.local_rank == -1 else DistributedSampler(train_dataset)
train_dataloader = DataLoader(train_dataset, sampler=train_sampler, batch_size=args.train_batch_size)
if args.max_steps > 0:
t_total = args.max_steps
args.num_train_epochs = args.max_steps // (len(train_dataloader) // args.gradient_accumulation_steps) + 1
else:
t_total = len(train_dataloader) // args.gradient_accumulation_steps * args.num_train_epochs
# Prepare optimizer and schedule (linear warmup and decay)
no_decay = ["bias", "LayerNorm.weight"]
optimizer_grouped_parameters = [
{
"params": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay)],
"weight_decay": args.weight_decay,
},
{"params": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay)], "weight_decay": 0.0},
]
optimizer = AdamW(optimizer_grouped_parameters, lr=args.learning_rate, eps=args.adam_epsilon)
scheduler = get_linear_schedule_with_warmup(
optimizer, num_warmup_steps=args.warmup_steps, num_training_steps=t_total
)
# Check if saved optimizer or scheduler states exist
if os.path.isfile(os.path.join(args.model_name_or_path, "optimizer.pt")) and os.path.isfile(
os.path.join(args.model_name_or_path, "scheduler.pt")
):
# Load in optimizer and scheduler states
optimizer.load_state_dict(torch.load(os.path.join(args.model_name_or_path, "optimizer.pt")))
scheduler.load_state_dict(torch.load(os.path.join(args.model_name_or_path, "scheduler.pt")))
if args.fp16:
try:
from apex import amp
except ImportError:
raise ImportError("Please install apex from https://www.github.com/nvidia/apex to use fp16 training.")
model, optimizer = amp.initialize(model, optimizer, opt_level=args.fp16_opt_level)
# multi-gpu training (should be after apex fp16 initialization)
if args.n_gpu > 1:
model = nn.DataParallel(model)
# Distributed training (should be after apex fp16 initialization)
if args.local_rank != -1:
model = nn.parallel.DistributedDataParallel(
model, device_ids=[args.local_rank], output_device=args.local_rank, find_unused_parameters=True
)
# Train!
logger.info("***** Running training *****")
logger.info(" Num examples = %d", len(train_dataset))
logger.info(" Num Epochs = %d", args.num_train_epochs)
logger.info(" Instantaneous batch size per GPU = %d", args.per_gpu_train_batch_size)
logger.info(
" Total train batch size (w. parallel, distributed & accumulation) = %d",
args.train_batch_size
* args.gradient_accumulation_steps
* (torch.distributed.get_world_size() if args.local_rank != -1 else 1),
)
logger.info(" Gradient Accumulation steps = %d", args.gradient_accumulation_steps)
logger.info(" Total optimization steps = %d", t_total)
global_step = 1
epochs_trained = 0
steps_trained_in_current_epoch = 0
# Check if continuing training from a checkpoint
if os.path.exists(args.model_name_or_path):
try:
# set global_step to global_step of last saved checkpoint from model path
checkpoint_suffix = args.model_name_or_path.split("-")[-1].split("/")[0]
global_step = int(checkpoint_suffix)
epochs_trained = global_step // (len(train_dataloader) // args.gradient_accumulation_steps)
steps_trained_in_current_epoch = global_step % (len(train_dataloader) // args.gradient_accumulation_steps)
logger.info(" Continuing training from checkpoint, will skip to saved global_step")
logger.info(" Continuing training from epoch %d", epochs_trained)
logger.info(" Continuing training from global step %d", global_step)
logger.info(" Will skip the first %d steps in the first epoch", steps_trained_in_current_epoch)
except ValueError:
logger.info(" Starting fine-tuning.")
tr_loss, logging_loss = 0.0, 0.0
model.zero_grad()
train_iterator = trange(
epochs_trained, int(args.num_train_epochs), desc="Epoch", disable=args.local_rank not in [-1, 0]
)
# Added here for reproducibility
set_seed(args)
for _ in train_iterator:
epoch_iterator = tqdm(train_dataloader, desc="Iteration", disable=args.local_rank not in [-1, 0])
for step, batch in enumerate(epoch_iterator):
# Skip past any already trained steps if resuming training
if steps_trained_in_current_epoch > 0:
steps_trained_in_current_epoch -= 1
continue
model.train()
if teacher is not None:
teacher.eval()
batch = tuple(t.to(args.device) for t in batch)
inputs = {
"input_ids": batch[0],
"attention_mask": batch[1],
"start_positions": batch[3],
"end_positions": batch[4],
}
if args.model_type != "distilbert":
inputs["token_type_ids"] = None if args.model_type == "xlm" else batch[2]
if args.model_type in ["xlnet", "xlm"]:
inputs.update({"cls_index": batch[5], "p_mask": batch[6]})
if args.version_2_with_negative:
inputs.update({"is_impossible": batch[7]})
outputs = model(**inputs)
loss, start_logits_stu, end_logits_stu = outputs
# Distillation loss
if teacher is not None:
if "token_type_ids" not in inputs:
inputs["token_type_ids"] = None if args.teacher_type == "xlm" else batch[2]
with torch.no_grad():
start_logits_tea, end_logits_tea = teacher(
input_ids=inputs["input_ids"],
token_type_ids=inputs["token_type_ids"],
attention_mask=inputs["attention_mask"],
)
assert start_logits_tea.size() == start_logits_stu.size()
assert end_logits_tea.size() == end_logits_stu.size()
loss_fct = nn.KLDivLoss(reduction="batchmean")
loss_start = loss_fct(
nn.functional.log_softmax(start_logits_stu / args.temperature, dim=-1),
nn.functional.softmax(start_logits_tea / args.temperature, dim=-1),
) * (args.temperature**2)
loss_end = loss_fct(
nn.functional.log_softmax(end_logits_stu / args.temperature, dim=-1),
nn.functional.softmax(end_logits_tea / args.temperature, dim=-1),
) * (args.temperature**2)
loss_ce = (loss_start + loss_end) / 2.0
loss = args.alpha_ce * loss_ce + args.alpha_squad * loss
if args.n_gpu > 1:
loss = loss.mean() # mean() to average on multi-gpu parallel (not distributed) training
if args.gradient_accumulation_steps > 1:
loss = loss / args.gradient_accumulation_steps
if args.fp16:
with amp.scale_loss(loss, optimizer) as scaled_loss:
scaled_loss.backward()
else:
loss.backward()
tr_loss += loss.item()
if (step + 1) % args.gradient_accumulation_steps == 0:
if args.fp16:
nn.utils.clip_grad_norm_(amp.master_params(optimizer), args.max_grad_norm)
else:
nn.utils.clip_grad_norm_(model.parameters(), args.max_grad_norm)
optimizer.step()
scheduler.step() # Update learning rate schedule
model.zero_grad()
global_step += 1
# Log metrics
if args.local_rank in [-1, 0] and args.logging_steps > 0 and global_step % args.logging_steps == 0:
# Only evaluate when single GPU otherwise metrics may not average well
if args.local_rank == -1 and args.evaluate_during_training:
results = evaluate(args, model, tokenizer)
for key, value in results.items():
tb_writer.add_scalar("eval_{}".format(key), value, global_step)
tb_writer.add_scalar("lr", scheduler.get_lr()[0], global_step)
tb_writer.add_scalar("loss", (tr_loss - logging_loss) / args.logging_steps, global_step)
logging_loss = tr_loss
if args.local_rank in [-1, 0] and args.save_steps > 0 and global_step % args.save_steps == 0:
# Save model checkpoint
output_dir = os.path.join(args.output_dir, "checkpoint-{}".format(global_step))
if not os.path.exists(output_dir):
os.makedirs(output_dir)
model_to_save = (
model.module if hasattr(model, "module") else model
) # Take care of distributed/parallel training
model_to_save.save_pretrained(output_dir)
tokenizer.save_pretrained(output_dir)
torch.save(args, os.path.join(output_dir, "training_args.bin"))
logger.info("Saving model checkpoint to %s", output_dir)
torch.save(optimizer.state_dict(), os.path.join(output_dir, "optimizer.pt"))
torch.save(scheduler.state_dict(), os.path.join(output_dir, "scheduler.pt"))
logger.info("Saving optimizer and scheduler states to %s", output_dir)
if args.max_steps > 0 and global_step > args.max_steps:
epoch_iterator.close()
break
if args.max_steps > 0 and global_step > args.max_steps:
train_iterator.close()
break
if args.local_rank in [-1, 0]:
tb_writer.close()
return global_step, tr_loss / global_step
def evaluate(args, model, tokenizer, prefix=""):
dataset, examples, features = load_and_cache_examples(args, tokenizer, evaluate=True, output_examples=True)
if not os.path.exists(args.output_dir) and args.local_rank in [-1, 0]:
os.makedirs(args.output_dir)
args.eval_batch_size = args.per_gpu_eval_batch_size * max(1, args.n_gpu)
# Note that DistributedSampler samples randomly
eval_sampler = SequentialSampler(dataset)
eval_dataloader = DataLoader(dataset, sampler=eval_sampler, batch_size=args.eval_batch_size)
# multi-gpu evaluate
if args.n_gpu > 1 and not isinstance(model, nn.DataParallel):
model = nn.DataParallel(model)
# Eval!
logger.info("***** Running evaluation {} *****".format(prefix))
logger.info(" Num examples = %d", len(dataset))
logger.info(" Batch size = %d", args.eval_batch_size)
all_results = []
start_time = timeit.default_timer()
for batch in tqdm(eval_dataloader, desc="Evaluating"):
model.eval()
batch = tuple(t.to(args.device) for t in batch)
with torch.no_grad():
inputs = {"input_ids": batch[0], "attention_mask": batch[1]}
if args.model_type != "distilbert":
inputs["token_type_ids"] = None if args.model_type == "xlm" else batch[2] # XLM don't use segment_ids
example_indices = batch[3]
if args.model_type in ["xlnet", "xlm"]:
inputs.update({"cls_index": batch[4], "p_mask": batch[5]})
outputs = model(**inputs)
for i, example_index in enumerate(example_indices):
eval_feature = features[example_index.item()]
unique_id = int(eval_feature.unique_id)
output = [to_list(output[i]) for output in outputs]
# Some models (XLNet, XLM) use 5 arguments for their predictions, while the other "simpler"
# models only use two.
if len(output) >= 5:
start_logits = output[0]
start_top_index = output[1]
end_logits = output[2]
end_top_index = output[3]
cls_logits = output[4]
result = SquadResult(
unique_id,
start_logits,
end_logits,
start_top_index=start_top_index,
end_top_index=end_top_index,
cls_logits=cls_logits,
)
else:
start_logits, end_logits = output
result = SquadResult(unique_id, start_logits, end_logits)
all_results.append(result)
evalTime = timeit.default_timer() - start_time
logger.info(" Evaluation done in total %f secs (%f sec per example)", evalTime, evalTime / len(dataset))
# Compute predictions
output_prediction_file = os.path.join(args.output_dir, "predictions_{}.json".format(prefix))
output_nbest_file = os.path.join(args.output_dir, "nbest_predictions_{}.json".format(prefix))
if args.version_2_with_negative:
output_null_log_odds_file = os.path.join(args.output_dir, "null_odds_{}.json".format(prefix))
else:
output_null_log_odds_file = None
if args.model_type in ["xlnet", "xlm"]:
# XLNet uses a more complex post-processing procedure
predictions = compute_predictions_log_probs(
examples,
features,
all_results,
args.n_best_size,
args.max_answer_length,
output_prediction_file,
output_nbest_file,
output_null_log_odds_file,
model.config.start_n_top,
model.config.end_n_top,
args.version_2_with_negative,
tokenizer,
args.verbose_logging,
)
else:
predictions = compute_predictions_logits(
examples,
features,
all_results,
args.n_best_size,
args.max_answer_length,
args.do_lower_case,
output_prediction_file,
output_nbest_file,
output_null_log_odds_file,
args.verbose_logging,
args.version_2_with_negative,
args.null_score_diff_threshold,
tokenizer,
)
# Compute the F1 and exact scores.
results = squad_evaluate(examples, predictions)
return results
def load_and_cache_examples(args, tokenizer, evaluate=False, output_examples=False):
if args.local_rank not in [-1, 0] and not evaluate:
# Make sure only the first process in distributed training process the dataset, and the others will use the cache
torch.distributed.barrier()
# Load data features from cache or dataset file
input_file = args.predict_file if evaluate else args.train_file
cached_features_file = os.path.join(
os.path.dirname(input_file),
"cached_distillation_{}_{}_{}".format(
"dev" if evaluate else "train",
list(filter(None, args.model_name_or_path.split("/"))).pop(),
str(args.max_seq_length),
),
)
if os.path.exists(cached_features_file) and not args.overwrite_cache:
logger.info("Loading features from cached file %s", cached_features_file)
features_and_dataset = torch.load(cached_features_file)
try:
features, dataset, examples = (
features_and_dataset["features"],
features_and_dataset["dataset"],
features_and_dataset["examples"],
)
except KeyError:
raise DeprecationWarning(
"You seem to be loading features from an older version of this script please delete the "
"file %s in order for it to be created again" % cached_features_file
)
else:
logger.info("Creating features from dataset file at %s", input_file)
processor = SquadV2Processor() if args.version_2_with_negative else SquadV1Processor()
if evaluate:
examples = processor.get_dev_examples(args.data_dir, filename=args.predict_file)
else:
examples = processor.get_train_examples(args.data_dir, filename=args.train_file)
features, dataset = squad_convert_examples_to_features(
examples=examples,
tokenizer=tokenizer,
max_seq_length=args.max_seq_length,
doc_stride=args.doc_stride,
max_query_length=args.max_query_length,
is_training=not evaluate,
return_dataset="pt",
threads=args.threads,
)
if args.local_rank in [-1, 0]:
logger.info("Saving features into cached file %s", cached_features_file)
torch.save({"features": features, "dataset": dataset, "examples": examples}, cached_features_file)
if args.local_rank == 0 and not evaluate:
# Make sure only the first process in distributed training process the dataset, and the others will use the cache
torch.distributed.barrier()
if output_examples:
return dataset, examples, features
return dataset
def main():
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--model_type",
default=None,
type=str,
required=True,
help="Model type selected in the list: " + ", ".join(MODEL_CLASSES.keys()),
)
parser.add_argument(
"--model_name_or_path",
default=None,
type=str,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models",
)
parser.add_argument(
"--output_dir",
default=None,
type=str,
required=True,
help="The output directory where the model checkpoints and predictions will be written.",
)
# Distillation parameters (optional)
parser.add_argument(
"--teacher_type",
default=None,
type=str,
help=(
"Teacher type. Teacher tokenizer and student (model) tokenizer must output the same tokenization. Only for"
" distillation."
),
)
parser.add_argument(
"--teacher_name_or_path",
default=None,
type=str,
help="Path to the already SQuAD fine-tuned teacher model. Only for distillation.",
)
parser.add_argument(
"--alpha_ce", default=0.5, type=float, help="Distillation loss linear weight. Only for distillation."
)
parser.add_argument(
"--alpha_squad", default=0.5, type=float, help="True SQuAD loss linear weight. Only for distillation."
)
parser.add_argument(
"--temperature", default=2.0, type=float, help="Distillation temperature. Only for distillation."
)
# Other parameters
parser.add_argument(
"--data_dir",
default=None,
type=str,
help="The input data dir. Should contain the .json files for the task."
+ "If no data dir or train/predict files are specified, will run with tensorflow_datasets.",
)
parser.add_argument(
"--train_file",
default=None,
type=str,
help="The input training file. If a data dir is specified, will look for the file there"
+ "If no data dir or train/predict files are specified, will run with tensorflow_datasets.",
)
parser.add_argument(
"--predict_file",
default=None,
type=str,
help="The input evaluation file. If a data dir is specified, will look for the file there"
+ "If no data dir or train/predict files are specified, will run with tensorflow_datasets.",
)
parser.add_argument(
"--config_name", default="", type=str, help="Pretrained config name or path if not the same as model_name"
)
parser.add_argument(
"--tokenizer_name",
default="",
type=str,
help="Pretrained tokenizer name or path if not the same as model_name",
)
parser.add_argument(
"--cache_dir",
default="",
type=str,
help="Where do you want to store the pre-trained models downloaded from huggingface.co",
)
parser.add_argument(
"--version_2_with_negative",
action="store_true",
help="If true, the SQuAD examples contain some that do not have an answer.",
)
parser.add_argument(
"--null_score_diff_threshold",
type=float,
default=0.0,
help="If null_score - best_non_null is greater than the threshold predict null.",
)
parser.add_argument(
"--max_seq_length",
default=384,
type=int,
help=(
"The maximum total input sequence length after WordPiece tokenization. Sequences "
"longer than this will be truncated, and sequences shorter than this will be padded."
),
)
parser.add_argument(
"--doc_stride",
default=128,
type=int,
help="When splitting up a long document into chunks, how much stride to take between chunks.",
)
parser.add_argument(
"--max_query_length",
default=64,
type=int,
help=(
"The maximum number of tokens for the question. Questions longer than this will "
"be truncated to this length."
),
)
parser.add_argument("--do_train", action="store_true", help="Whether to run training.")
parser.add_argument("--do_eval", action="store_true", help="Whether to run eval on the dev set.")
parser.add_argument(
"--evaluate_during_training", action="store_true", help="Rul evaluation during training at each logging step."
)
parser.add_argument(
"--do_lower_case", action="store_true", help="Set this flag if you are using an uncased model."
)
parser.add_argument("--per_gpu_train_batch_size", default=8, type=int, help="Batch size per GPU/CPU for training.")
parser.add_argument(
"--per_gpu_eval_batch_size", default=8, type=int, help="Batch size per GPU/CPU for evaluation."
)
parser.add_argument("--learning_rate", default=5e-5, type=float, help="The initial learning rate for Adam.")
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.",
)
parser.add_argument("--weight_decay", default=0.0, type=float, help="Weight decay if we apply some.")
parser.add_argument("--adam_epsilon", default=1e-8, type=float, help="Epsilon for Adam optimizer.")
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
parser.add_argument(
"--num_train_epochs", default=3.0, type=float, help="Total number of training epochs to perform."
)
parser.add_argument(
"--max_steps",
default=-1,
type=int,
help="If > 0: set total number of training steps to perform. Override num_train_epochs.",
)
parser.add_argument("--warmup_steps", default=0, type=int, help="Linear warmup over warmup_steps.")
parser.add_argument(
"--n_best_size",
default=20,
type=int,
help="The total number of n-best predictions to generate in the nbest_predictions.json output file.",
)
parser.add_argument(
"--max_answer_length",
default=30,
type=int,
help=(
"The maximum length of an answer that can be generated. This is needed because the start "
"and end predictions are not conditioned on one another."
),
)
parser.add_argument(
"--verbose_logging",
action="store_true",
help=(
"If true, all of the warnings related to data processing will be printed. "
"A number of warnings are expected for a normal SQuAD evaluation."
),
)
parser.add_argument("--logging_steps", type=int, default=50, help="Log every X updates steps.")
parser.add_argument("--save_steps", type=int, default=50, help="Save checkpoint every X updates steps.")
parser.add_argument(
"--eval_all_checkpoints",
action="store_true",
help="Evaluate all checkpoints starting with the same prefix as model_name ending and ending with step number",
)
parser.add_argument("--no_cuda", action="store_true", help="Whether not to use CUDA when available")
parser.add_argument(
"--overwrite_output_dir", action="store_true", help="Overwrite the content of the output directory"
)
parser.add_argument(
"--overwrite_cache", action="store_true", help="Overwrite the cached training and evaluation sets"
)
parser.add_argument("--seed", type=int, default=42, help="random seed for initialization")
parser.add_argument("--local_rank", type=int, default=-1, help="local_rank for distributed training on gpus")
parser.add_argument(
"--fp16",
action="store_true",
help="Whether to use 16-bit (mixed) precision (through NVIDIA apex) instead of 32-bit",
)
parser.add_argument(
"--fp16_opt_level",
type=str,
default="O1",
help=(
"For fp16: Apex AMP optimization level selected in ['O0', 'O1', 'O2', and 'O3']. "
"See details at https://nvidia.github.io/apex/amp.html"
),
)
parser.add_argument("--server_ip", type=str, default="", help="Can be used for distant debugging.")
parser.add_argument("--server_port", type=str, default="", help="Can be used for distant debugging.")
parser.add_argument("--threads", type=int, default=1, help="multiple threads for converting example to features")
args = parser.parse_args()
if (
os.path.exists(args.output_dir)
and os.listdir(args.output_dir)
and args.do_train
and not args.overwrite_output_dir
):
raise ValueError(
"Output directory ({}) already exists and is not empty. Use --overwrite_output_dir to overcome.".format(
args.output_dir
)
)
# Setup distant debugging if needed
if args.server_ip and args.server_port:
# Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
import ptvsd
print("Waiting for debugger attach")
ptvsd.enable_attach(address=(args.server_ip, args.server_port), redirect_output=True)
ptvsd.wait_for_attach()
# Setup CUDA, GPU & distributed training
if args.local_rank == -1 or args.no_cuda:
device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
args.n_gpu = 0 if args.no_cuda else torch.cuda.device_count()
else: # Initializes the distributed backend which will take care of synchronizing nodes/GPUs
torch.cuda.set_device(args.local_rank)
device = torch.device("cuda", args.local_rank)
torch.distributed.init_process_group(backend="nccl")
args.n_gpu = 1
args.device = device
# Setup logging
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO if args.local_rank in [-1, 0] else logging.WARN,
)
logger.warning(
"Process rank: %s, device: %s, n_gpu: %s, distributed training: %s, 16-bits training: %s",
args.local_rank,
device,
args.n_gpu,
bool(args.local_rank != -1),
args.fp16,
)
# Set the verbosity to info of the Transformers logger (on main process only):
if is_main_process(args.local_rank):
transformers.utils.logging.set_verbosity_info()
transformers.utils.logging.enable_default_handler()
transformers.utils.logging.enable_explicit_format()
# Set seed
set_seed(args)
# Load pretrained model and tokenizer
if args.local_rank not in [-1, 0]:
# Make sure only the first process in distributed training will download model & vocab
torch.distributed.barrier()
args.model_type = args.model_type.lower()
config_class, model_class, tokenizer_class = MODEL_CLASSES[args.model_type]
config = config_class.from_pretrained(
args.config_name if args.config_name else args.model_name_or_path,
cache_dir=args.cache_dir if args.cache_dir else None,
)
tokenizer = tokenizer_class.from_pretrained(
args.tokenizer_name if args.tokenizer_name else args.model_name_or_path,
do_lower_case=args.do_lower_case,
cache_dir=args.cache_dir if args.cache_dir else None,
)
model = model_class.from_pretrained(
args.model_name_or_path,
from_tf=bool(".ckpt" in args.model_name_or_path),
config=config,
cache_dir=args.cache_dir if args.cache_dir else None,
)
if args.teacher_type is not None:
assert args.teacher_name_or_path is not None
assert args.alpha_ce > 0.0
assert args.alpha_ce + args.alpha_squad > 0.0
assert args.teacher_type != "distilbert", "We constraint teachers not to be of type DistilBERT."
teacher_config_class, teacher_model_class, _ = MODEL_CLASSES[args.teacher_type]
teacher_config = teacher_config_class.from_pretrained(
args.teacher_name_or_path, cache_dir=args.cache_dir if args.cache_dir else None
)
teacher = teacher_model_class.from_pretrained(
args.teacher_name_or_path, config=teacher_config, cache_dir=args.cache_dir if args.cache_dir else None
)
teacher.to(args.device)
else:
teacher = None
if args.local_rank == 0:
# Make sure only the first process in distributed training will download model & vocab
torch.distributed.barrier()
model.to(args.device)
logger.info("Training/evaluation parameters %s", args)
# Before we do anything with models, we want to ensure that we get fp16 execution of torch.einsum if args.fp16 is set.
# Otherwise it'll default to "promote" mode, and we'll get fp32 operations. Note that running `--fp16_opt_level="O2"` will
# remove the need for this code, but it is still valid.
if args.fp16:
try:
import apex
apex.amp.register_half_function(torch, "einsum")
except ImportError:
raise ImportError("Please install apex from https://www.github.com/nvidia/apex to use fp16 training.")
# Training
if args.do_train:
train_dataset = load_and_cache_examples(args, tokenizer, evaluate=False, output_examples=False)
global_step, tr_loss = train(args, train_dataset, model, tokenizer, teacher=teacher)
logger.info(" global_step = %s, average loss = %s", global_step, tr_loss)
# Save the trained model and the tokenizer
if args.do_train and (args.local_rank == -1 or torch.distributed.get_rank() == 0):
logger.info("Saving model checkpoint to %s", args.output_dir)
# Save a trained model, configuration and tokenizer using `save_pretrained()`.
# They can then be reloaded using `from_pretrained()`
model_to_save = (
model.module if hasattr(model, "module") else model
) # Take care of distributed/parallel training
model_to_save.save_pretrained(args.output_dir)
tokenizer.save_pretrained(args.output_dir)
# Good practice: save your training arguments together with the trained model
torch.save(args, os.path.join(args.output_dir, "training_args.bin"))
# Load a trained model and vocabulary that you have fine-tuned
model = model_class.from_pretrained(args.output_dir)
tokenizer = tokenizer_class.from_pretrained(args.output_dir, do_lower_case=args.do_lower_case)
model.to(args.device)
# Evaluation - we can ask to evaluate all the checkpoints (sub-directories) in a directory
results = {}
if args.do_eval and args.local_rank in [-1, 0]:
if args.do_train:
logger.info("Loading checkpoints saved during training for evaluation")
checkpoints = [args.output_dir]
if args.eval_all_checkpoints:
checkpoints = [
os.path.dirname(c) for c in sorted(glob.glob(args.output_dir + "/**/" + WEIGHTS_NAME, recursive=True))
]
logger.info("Evaluate the following checkpoints: %s", checkpoints)
for checkpoint in checkpoints:
# Reload the model
global_step = checkpoint.split("-")[-1] if len(checkpoints) > 1 else ""
model = model_class.from_pretrained(checkpoint)
model.to(args.device)
# Evaluate
result = evaluate(args, model, tokenizer, prefix=global_step)
result = {k + ("_{}".format(global_step) if global_step else ""): v for k, v in result.items()}
results.update(result)
logger.info("Results: {}".format(results))
return results
if __name__ == "__main__":
main()
|
transformers/examples/research_projects/distillation/run_squad_w_distillation.py/0
|
{
"file_path": "transformers/examples/research_projects/distillation/run_squad_w_distillation.py",
"repo_id": "transformers",
"token_count": 15430
}
| 316
|
from .model import FSNERModel
from .tokenizer_utils import FSNERTokenizerUtils
__all__ = ["FSNERModel", "FSNERTokenizerUtils"]
|
transformers/examples/research_projects/fsner/src/fsner/__init__.py/0
|
{
"file_path": "transformers/examples/research_projects/fsner/src/fsner/__init__.py",
"repo_id": "transformers",
"token_count": 44
}
| 317
|
command:
- python3
- train.py
method: random
parameters:
lr:
values: [4e-5, 3e-5]
warmup_steps:
values: [20000, 15000, 10000, 5000]
weight_decay:
distribution: normal
mu: 1e-2
sigma: 2e-3
metric:
name: eval_loss
goal: minimize
|
transformers/examples/research_projects/jax-projects/big_bird/sweep_flax.yaml/0
|
{
"file_path": "transformers/examples/research_projects/jax-projects/big_bird/sweep_flax.yaml",
"repo_id": "transformers",
"token_count": 222
}
| 318
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2022 The HuggingFace Team All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Fine-tuning LayoutLMv3 for token classification on FUNSD or CORD.
"""
# You can also adapt this script on your own token classification task and datasets. Pointers for this are left as
# comments.
import logging
import os
import sys
from dataclasses import dataclass, field
from typing import Optional
import datasets
import numpy as np
from datasets import ClassLabel, load_dataset, load_metric
import transformers
from transformers import (
AutoConfig,
AutoModelForTokenClassification,
AutoProcessor,
HfArgumentParser,
Trainer,
TrainingArguments,
set_seed,
)
from transformers.data.data_collator import default_data_collator
from transformers.trainer_utils import get_last_checkpoint
from transformers.utils import check_min_version
from transformers.utils.versions import require_version
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.19.0.dev0")
require_version("datasets>=1.8.0", "To fix: pip install -r examples/pytorch/token-classification/requirements.txt")
logger = logging.getLogger(__name__)
@dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
default="microsoft/layoutlmv3-base",
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"},
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
processor_name: Optional[str] = field(
default=None, metadata={"help": "Name or path to the processor files if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None,
metadata={"help": "Where do you want to store the pretrained models downloaded from huggingface.co"},
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
use_auth_token: bool = field(
default=False,
metadata={
"help": (
"Will use the token generated when running `huggingface-cli login` (necessary to use this script "
"with private models)."
)
},
)
@dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
"""
task_name: Optional[str] = field(default="ner", metadata={"help": "The name of the task (ner, pos...)."})
dataset_name: Optional[str] = field(
default="nielsr/funsd-layoutlmv3",
metadata={"help": "The name of the dataset to use (via the datasets library)."},
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
train_file: Optional[str] = field(
default=None, metadata={"help": "The input training data file (a csv or JSON file)."}
)
validation_file: Optional[str] = field(
default=None,
metadata={"help": "An optional input evaluation data file to evaluate on (a csv or JSON file)."},
)
test_file: Optional[str] = field(
default=None,
metadata={"help": "An optional input test data file to predict on (a csv or JSON file)."},
)
text_column_name: Optional[str] = field(
default=None, metadata={"help": "The column name of text to input in the file (a csv or JSON file)."}
)
label_column_name: Optional[str] = field(
default=None, metadata={"help": "The column name of label to input in the file (a csv or JSON file)."}
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_seq_length: int = field(
default=512,
metadata={
"help": (
"The maximum total input sequence length after tokenization. If set, sequences longer "
"than this will be truncated, sequences shorter will be padded."
)
},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
)
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
)
},
)
max_predict_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of prediction examples to this "
"value if set."
)
},
)
label_all_tokens: bool = field(
default=False,
metadata={
"help": (
"Whether to put the label for one word on all tokens of generated by that word or just on the "
"one (in which case the other tokens will have a padding index)."
)
},
)
return_entity_level_metrics: bool = field(
default=False,
metadata={"help": "Whether to return all the entity levels during evaluation or just the overall ones."},
)
def __post_init__(self):
if self.dataset_name is None and self.train_file is None and self.validation_file is None:
raise ValueError("Need either a dataset name or a training/validation file.")
else:
if self.train_file is not None:
extension = self.train_file.split(".")[-1]
assert extension in ["csv", "json"], "`train_file` should be a csv or a json file."
if self.validation_file is not None:
extension = self.validation_file.split(".")[-1]
assert extension in ["csv", "json"], "`validation_file` should be a csv or a json file."
self.task_name = self.task_name.lower()
def main():
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
# Setup logging
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
handlers=[logging.StreamHandler(sys.stdout)],
)
log_level = training_args.get_process_log_level()
logger.setLevel(log_level)
datasets.utils.logging.set_verbosity(log_level)
transformers.utils.logging.set_verbosity(log_level)
transformers.utils.logging.enable_default_handler()
transformers.utils.logging.enable_explicit_format()
# Log on each process the small summary:
logger.warning(
f"Process rank: {training_args.local_rank}, device: {training_args.device}, n_gpu: {training_args.n_gpu}"
+ f"distributed training: {bool(training_args.local_rank != -1)}, 16-bits training: {training_args.fp16}"
)
logger.info(f"Training/evaluation parameters {training_args}")
# Detecting last checkpoint.
last_checkpoint = None
if os.path.isdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir:
last_checkpoint = get_last_checkpoint(training_args.output_dir)
if last_checkpoint is None and len(os.listdir(training_args.output_dir)) > 0:
raise ValueError(
f"Output directory ({training_args.output_dir}) already exists and is not empty. "
"Use --overwrite_output_dir to overcome."
)
elif last_checkpoint is not None and training_args.resume_from_checkpoint is None:
logger.info(
f"Checkpoint detected, resuming training at {last_checkpoint}. To avoid this behavior, change "
"the `--output_dir` or add `--overwrite_output_dir` to train from scratch."
)
# Set seed before initializing model.
set_seed(training_args.seed)
# Get the datasets
# In distributed training, the load_dataset function guarantee that only one local process can concurrently
# download the dataset.
if data_args.dataset_name == "funsd":
# Downloading and loading a dataset from the hub.
dataset = load_dataset(
"nielsr/funsd-layoutlmv3",
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
token=True if model_args.use_auth_token else None,
)
elif data_args.dataset_name == "cord":
# Downloading and loading a dataset from the hub.
dataset = load_dataset(
"nielsr/cord-layoutlmv3",
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
token=True if model_args.use_auth_token else None,
)
else:
raise ValueError("This script only supports either FUNSD or CORD out-of-the-box.")
if training_args.do_train:
column_names = dataset["train"].column_names
features = dataset["train"].features
else:
column_names = dataset["test"].column_names
features = dataset["test"].features
image_column_name = "image"
text_column_name = "words" if "words" in column_names else "tokens"
boxes_column_name = "bboxes"
label_column_name = (
f"{data_args.task_name}_tags" if f"{data_args.task_name}_tags" in column_names else column_names[1]
)
remove_columns = column_names
# In the event the labels are not a `Sequence[ClassLabel]`, we will need to go through the dataset to get the
# unique labels.
def get_label_list(labels):
unique_labels = set()
for label in labels:
unique_labels = unique_labels | set(label)
label_list = list(unique_labels)
label_list.sort()
return label_list
# If the labels are of type ClassLabel, they are already integers and we have the map stored somewhere.
# Otherwise, we have to get the list of labels manually.
if isinstance(features[label_column_name].feature, ClassLabel):
label_list = features[label_column_name].feature.names
# No need to convert the labels since they are already ints.
id2label = dict(enumerate(label_list))
label2id = {v: k for k, v in enumerate(label_list)}
else:
label_list = get_label_list(datasets["train"][label_column_name])
id2label = dict(enumerate(label_list))
label2id = {v: k for k, v in enumerate(label_list)}
num_labels = len(label_list)
# Load pretrained model and processor
#
# Distributed training:
# The .from_pretrained methods guarantee that only one local process can concurrently
# download model & vocab.
config = AutoConfig.from_pretrained(
model_args.config_name if model_args.config_name else model_args.model_name_or_path,
num_labels=num_labels,
finetuning_task=data_args.task_name,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
processor = AutoProcessor.from_pretrained(
model_args.processor_name if model_args.processor_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
use_fast=True,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
add_prefix_space=True,
apply_ocr=False,
)
model = AutoModelForTokenClassification.from_pretrained(
model_args.model_name_or_path,
from_tf=bool(".ckpt" in model_args.model_name_or_path),
config=config,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
# Set the correspondences label/ID inside the model config
model.config.label2id = label2id
model.config.id2label = id2label
# Preprocessing the dataset
# The processor does everything for us (prepare the image using LayoutLMv3ImageProcessor
# and prepare the words, boxes and word-level labels using LayoutLMv3TokenizerFast)
def prepare_examples(examples):
images = examples[image_column_name]
words = examples[text_column_name]
boxes = examples[boxes_column_name]
word_labels = examples[label_column_name]
encoding = processor(
images,
words,
boxes=boxes,
word_labels=word_labels,
truncation=True,
padding="max_length",
max_length=data_args.max_seq_length,
)
return encoding
if training_args.do_train:
if "train" not in dataset:
raise ValueError("--do_train requires a train dataset")
train_dataset = dataset["train"]
if data_args.max_train_samples is not None:
train_dataset = train_dataset.select(range(data_args.max_train_samples))
with training_args.main_process_first(desc="train dataset map pre-processing"):
train_dataset = train_dataset.map(
prepare_examples,
batched=True,
remove_columns=remove_columns,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
if training_args.do_eval:
validation_name = "test"
if validation_name not in dataset:
raise ValueError("--do_eval requires a validation dataset")
eval_dataset = dataset[validation_name]
if data_args.max_eval_samples is not None:
eval_dataset = eval_dataset.select(range(data_args.max_eval_samples))
with training_args.main_process_first(desc="validation dataset map pre-processing"):
eval_dataset = eval_dataset.map(
prepare_examples,
batched=True,
remove_columns=remove_columns,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
if training_args.do_predict:
if "test" not in datasets:
raise ValueError("--do_predict requires a test dataset")
predict_dataset = datasets["test"]
if data_args.max_predict_samples is not None:
max_predict_samples = min(len(predict_dataset), data_args.max_predict_samples)
predict_dataset = predict_dataset.select(range(max_predict_samples))
with training_args.main_process_first(desc="prediction dataset map pre-processing"):
predict_dataset = predict_dataset.map(
prepare_examples,
batched=True,
remove_columns=remove_columns,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
# Metrics
metric = load_metric("seqeval")
def compute_metrics(p):
predictions, labels = p
predictions = np.argmax(predictions, axis=2)
# Remove ignored index (special tokens)
true_predictions = [
[label_list[p] for (p, l) in zip(prediction, label) if l != -100]
for prediction, label in zip(predictions, labels)
]
true_labels = [
[label_list[l] for (p, l) in zip(prediction, label) if l != -100]
for prediction, label in zip(predictions, labels)
]
results = metric.compute(predictions=true_predictions, references=true_labels)
if data_args.return_entity_level_metrics:
# Unpack nested dictionaries
final_results = {}
for key, value in results.items():
if isinstance(value, dict):
for n, v in value.items():
final_results[f"{key}_{n}"] = v
else:
final_results[key] = value
return final_results
else:
return {
"precision": results["overall_precision"],
"recall": results["overall_recall"],
"f1": results["overall_f1"],
"accuracy": results["overall_accuracy"],
}
# Initialize our Trainer
trainer = Trainer(
model=model,
args=training_args,
train_dataset=train_dataset if training_args.do_train else None,
eval_dataset=eval_dataset if training_args.do_eval else None,
tokenizer=processor,
data_collator=default_data_collator,
compute_metrics=compute_metrics,
)
# Training
if training_args.do_train:
checkpoint = None
if training_args.resume_from_checkpoint is not None:
checkpoint = training_args.resume_from_checkpoint
elif last_checkpoint is not None:
checkpoint = last_checkpoint
train_result = trainer.train(resume_from_checkpoint=checkpoint)
metrics = train_result.metrics
trainer.save_model() # Saves the tokenizer too for easy upload
max_train_samples = (
data_args.max_train_samples if data_args.max_train_samples is not None else len(train_dataset)
)
metrics["train_samples"] = min(max_train_samples, len(train_dataset))
trainer.log_metrics("train", metrics)
trainer.save_metrics("train", metrics)
trainer.save_state()
# Evaluation
if training_args.do_eval:
logger.info("*** Evaluate ***")
metrics = trainer.evaluate()
max_eval_samples = data_args.max_eval_samples if data_args.max_eval_samples is not None else len(eval_dataset)
metrics["eval_samples"] = min(max_eval_samples, len(eval_dataset))
trainer.log_metrics("eval", metrics)
trainer.save_metrics("eval", metrics)
# Predict
if training_args.do_predict:
logger.info("*** Predict ***")
predictions, labels, metrics = trainer.predict(predict_dataset, metric_key_prefix="predict")
predictions = np.argmax(predictions, axis=2)
# Remove ignored index (special tokens)
true_predictions = [
[label_list[p] for (p, l) in zip(prediction, label) if l != -100]
for prediction, label in zip(predictions, labels)
]
trainer.log_metrics("predict", metrics)
trainer.save_metrics("predict", metrics)
# Save predictions
output_predictions_file = os.path.join(training_args.output_dir, "predictions.txt")
if trainer.is_world_process_zero():
with open(output_predictions_file, "w") as writer:
for prediction in true_predictions:
writer.write(" ".join(prediction) + "\n")
kwargs = {"finetuned_from": model_args.model_name_or_path, "tasks": "token-classification"}
if data_args.dataset_name is not None:
kwargs["dataset_tags"] = data_args.dataset_name
if data_args.dataset_config_name is not None:
kwargs["dataset_args"] = data_args.dataset_config_name
kwargs["dataset"] = f"{data_args.dataset_name} {data_args.dataset_config_name}"
else:
kwargs["dataset"] = data_args.dataset_name
if training_args.push_to_hub:
trainer.push_to_hub(**kwargs)
else:
trainer.create_model_card(**kwargs)
def _mp_fn(index):
# For xla_spawn (TPUs)
main()
if __name__ == "__main__":
main()
|
transformers/examples/research_projects/layoutlmv3/run_funsd_cord.py/0
|
{
"file_path": "transformers/examples/research_projects/layoutlmv3/run_funsd_cord.py",
"repo_id": "transformers",
"token_count": 8703
}
| 319
|
<!---
Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
## Whole Word Mask Language Model
These scripts leverage the 🤗 Datasets library and the Trainer API. You can easily customize them to your needs if you
need extra processing on your datasets.
The following examples, will run on a datasets hosted on our [hub](https://huggingface.co/datasets) or with your own
text files for training and validation. We give examples of both below.
The BERT authors released a new version of BERT using Whole Word Masking in May 2019. Instead of masking randomly
selected tokens (which may be part of words), they mask randomly selected words (masking all the tokens corresponding
to that word). This technique has been refined for Chinese in [this paper](https://arxiv.org/abs/1906.08101).
To fine-tune a model using whole word masking, use the following script:
```bash
python run_mlm_wwm.py \
--model_name_or_path FacebookAI/roberta-base \
--dataset_name wikitext \
--dataset_config_name wikitext-2-raw-v1 \
--do_train \
--do_eval \
--output_dir /tmp/test-mlm-wwm
```
For Chinese models, we need to generate a reference files (which requires the ltp library), because it's tokenized at
the character level.
**Q :** Why a reference file?
**A :** Suppose we have a Chinese sentence like: `我喜欢你` The original Chinese-BERT will tokenize it as
`['我','喜','欢','你']` (character level). But `喜欢` is a whole word. For whole word masking proxy, we need a result
like `['我','喜','##欢','你']`, so we need a reference file to tell the model which position of the BERT original token
should be added `##`.
**Q :** Why LTP ?
**A :** Cause the best known Chinese WWM BERT is [Chinese-BERT-wwm](https://github.com/ymcui/Chinese-BERT-wwm) by HIT.
It works well on so many Chines Task like CLUE (Chinese GLUE). They use LTP, so if we want to fine-tune their model,
we need LTP.
You could run the following:
```bash
export TRAIN_FILE=/path/to/train/file
export LTP_RESOURCE=/path/to/ltp/tokenizer
export BERT_RESOURCE=/path/to/bert/tokenizer
export SAVE_PATH=/path/to/data/ref.txt
python run_chinese_ref.py \
--file_name=$TRAIN_FILE \
--ltp=$LTP_RESOURCE \
--bert=$BERT_RESOURCE \
--save_path=$SAVE_PATH
```
Then you can run the script like this:
```bash
export TRAIN_FILE=/path/to/train/file
export VALIDATION_FILE=/path/to/validation/file
export TRAIN_REF_FILE=/path/to/train/chinese_ref/file
export VALIDATION_REF_FILE=/path/to/validation/chinese_ref/file
export OUTPUT_DIR=/tmp/test-mlm-wwm
python run_mlm_wwm.py \
--model_name_or_path FacebookAI/roberta-base \
--train_file $TRAIN_FILE \
--validation_file $VALIDATION_FILE \
--train_ref_file $TRAIN_REF_FILE \
--validation_ref_file $VALIDATION_REF_FILE \
--do_train \
--do_eval \
--output_dir $OUTPUT_DIR
```
**Note1:** On TPU, you should the flag `--pad_to_max_length` to make sure all your batches have the same length.
**Note2:** And if you have any questions or something goes wrong when running this code, don't hesitate to pin @wlhgtc.
|
transformers/examples/research_projects/mlm_wwm/README.md/0
|
{
"file_path": "transformers/examples/research_projects/mlm_wwm/README.md",
"repo_id": "transformers",
"token_count": 1192
}
| 320
|
# coding=utf-8
# Copyright 2020-present, the HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Masked Linear module: A fully connected layer that computes an adaptive binary mask on the fly.
The mask (binary or not) is computed at each forward pass and multiplied against
the weight matrix to prune a portion of the weights.
The pruned weight matrix is then multiplied against the inputs (and if necessary, the bias is added).
"""
import math
import torch
from torch import nn
from torch.nn import init
from .binarizer import MagnitudeBinarizer, ThresholdBinarizer, TopKBinarizer
class MaskedLinear(nn.Linear):
"""
Fully Connected layer with on the fly adaptive mask.
If needed, a score matrix is created to store the importance of each associated weight.
"""
def __init__(
self,
in_features: int,
out_features: int,
bias: bool = True,
mask_init: str = "constant",
mask_scale: float = 0.0,
pruning_method: str = "topK",
):
"""
Args:
in_features (`int`)
Size of each input sample
out_features (`int`)
Size of each output sample
bias (`bool`)
If set to ``False``, the layer will not learn an additive bias.
Default: ``True``
mask_init (`str`)
The initialization method for the score matrix if a score matrix is needed.
Choices: ["constant", "uniform", "kaiming"]
Default: ``constant``
mask_scale (`float`)
The initialization parameter for the chosen initialization method `mask_init`.
Default: ``0.``
pruning_method (`str`)
Method to compute the mask.
Choices: ["topK", "threshold", "sigmoied_threshold", "magnitude", "l0"]
Default: ``topK``
"""
super(MaskedLinear, self).__init__(in_features=in_features, out_features=out_features, bias=bias)
assert pruning_method in ["topK", "threshold", "sigmoied_threshold", "magnitude", "l0"]
self.pruning_method = pruning_method
if self.pruning_method in ["topK", "threshold", "sigmoied_threshold", "l0"]:
self.mask_scale = mask_scale
self.mask_init = mask_init
self.mask_scores = nn.Parameter(torch.empty(self.weight.size()))
self.init_mask()
def init_mask(self):
if self.mask_init == "constant":
init.constant_(self.mask_scores, val=self.mask_scale)
elif self.mask_init == "uniform":
init.uniform_(self.mask_scores, a=-self.mask_scale, b=self.mask_scale)
elif self.mask_init == "kaiming":
init.kaiming_uniform_(self.mask_scores, a=math.sqrt(5))
def forward(self, input: torch.tensor, threshold: float):
# Get the mask
if self.pruning_method == "topK":
mask = TopKBinarizer.apply(self.mask_scores, threshold)
elif self.pruning_method in ["threshold", "sigmoied_threshold"]:
sig = "sigmoied" in self.pruning_method
mask = ThresholdBinarizer.apply(self.mask_scores, threshold, sig)
elif self.pruning_method == "magnitude":
mask = MagnitudeBinarizer.apply(self.weight, threshold)
elif self.pruning_method == "l0":
l, r, b = -0.1, 1.1, 2 / 3
if self.training:
u = torch.zeros_like(self.mask_scores).uniform_().clamp(0.0001, 0.9999)
s = torch.sigmoid((u.log() - (1 - u).log() + self.mask_scores) / b)
else:
s = torch.sigmoid(self.mask_scores)
s_bar = s * (r - l) + l
mask = s_bar.clamp(min=0.0, max=1.0)
# Mask weights with computed mask
weight_thresholded = mask * self.weight
# Compute output (linear layer) with masked weights
return nn.functional.linear(input, weight_thresholded, self.bias)
|
transformers/examples/research_projects/movement-pruning/emmental/modules/masked_nn.py/0
|
{
"file_path": "transformers/examples/research_projects/movement-pruning/emmental/modules/masked_nn.py",
"repo_id": "transformers",
"token_count": 1917
}
| 321
|
import logging
import os
from dataclasses import dataclass, field
from functools import partial
from pathlib import Path
from tempfile import TemporaryDirectory
from typing import List, Optional
import faiss
import torch
from datasets import Features, Sequence, Value, load_dataset
from transformers import DPRContextEncoder, DPRContextEncoderTokenizerFast, HfArgumentParser
logger = logging.getLogger(__name__)
torch.set_grad_enabled(False)
device = "cuda" if torch.cuda.is_available() else "cpu"
def split_text(text: str, n=100, character=" ") -> List[str]:
"""Split the text every ``n``-th occurrence of ``character``"""
text = text.split(character)
return [character.join(text[i : i + n]).strip() for i in range(0, len(text), n)]
def split_documents(documents: dict) -> dict:
"""Split documents into passages"""
titles, texts = [], []
for title, text in zip(documents["title"], documents["text"]):
if text is not None:
for passage in split_text(text):
titles.append(title if title is not None else "")
texts.append(passage)
return {"title": titles, "text": texts}
def embed(documents: dict, ctx_encoder: DPRContextEncoder, ctx_tokenizer: DPRContextEncoderTokenizerFast) -> dict:
"""Compute the DPR embeddings of document passages"""
input_ids = ctx_tokenizer(
documents["title"], documents["text"], truncation=True, padding="longest", return_tensors="pt"
)["input_ids"]
embeddings = ctx_encoder(input_ids.to(device=device), return_dict=True).pooler_output
return {"embeddings": embeddings.detach().cpu().numpy()}
def main(
rag_example_args: "RagExampleArguments",
processing_args: "ProcessingArguments",
index_hnsw_args: "IndexHnswArguments",
):
######################################
logger.info("Step 1 - Create the dataset")
######################################
# The dataset needed for RAG must have three columns:
# - title (string): title of the document
# - text (string): text of a passage of the document
# - embeddings (array of dimension d): DPR representation of the passage
# Let's say you have documents in tab-separated csv files with columns "title" and "text"
assert os.path.isfile(rag_example_args.csv_path), "Please provide a valid path to a csv file"
# You can load a Dataset object this way
dataset = load_dataset(
"csv", data_files=[rag_example_args.csv_path], split="train", delimiter="\t", column_names=["title", "text"]
)
# More info about loading csv files in the documentation: https://huggingface.co/docs/datasets/loading_datasets?highlight=csv#csv-files
# Then split the documents into passages of 100 words
dataset = dataset.map(split_documents, batched=True, num_proc=processing_args.num_proc)
# And compute the embeddings
ctx_encoder = DPRContextEncoder.from_pretrained(rag_example_args.dpr_ctx_encoder_model_name).to(device=device)
ctx_tokenizer = DPRContextEncoderTokenizerFast.from_pretrained(rag_example_args.dpr_ctx_encoder_model_name)
new_features = Features(
{"text": Value("string"), "title": Value("string"), "embeddings": Sequence(Value("float32"))}
) # optional, save as float32 instead of float64 to save space
dataset = dataset.map(
partial(embed, ctx_encoder=ctx_encoder, ctx_tokenizer=ctx_tokenizer),
batched=True,
batch_size=processing_args.batch_size,
features=new_features,
)
# And finally save your dataset
passages_path = os.path.join(rag_example_args.output_dir, "my_knowledge_dataset")
dataset.save_to_disk(passages_path)
# from datasets import load_from_disk
# dataset = load_from_disk(passages_path) # to reload the dataset
######################################
logger.info("Step 2 - Index the dataset")
######################################
# Let's use the Faiss implementation of HNSW for fast approximate nearest neighbor search
index = faiss.IndexHNSWFlat(index_hnsw_args.d, index_hnsw_args.m, faiss.METRIC_INNER_PRODUCT)
dataset.add_faiss_index("embeddings", custom_index=index)
# And save the index
index_path = os.path.join(rag_example_args.output_dir, "my_knowledge_dataset_hnsw_index.faiss")
dataset.get_index("embeddings").save(index_path)
# dataset.load_faiss_index("embeddings", index_path) # to reload the index
@dataclass
class RagExampleArguments:
csv_path: str = field(
default=str(Path(__file__).parent / "test_run" / "dummy-kb" / "my_knowledge_dataset.csv"),
metadata={"help": "Path to a tab-separated csv file with columns 'title' and 'text'"},
)
question: Optional[str] = field(
default=None,
metadata={"help": "Question that is passed as input to RAG. Default is 'What does Moses' rod turn into ?'."},
)
rag_model_name: str = field(
default="facebook/rag-sequence-nq",
metadata={"help": "The RAG model to use. Either 'facebook/rag-sequence-nq' or 'facebook/rag-token-nq'"},
)
dpr_ctx_encoder_model_name: str = field(
default="facebook/dpr-ctx_encoder-multiset-base",
metadata={
"help": (
"The DPR context encoder model to use. Either 'facebook/dpr-ctx_encoder-single-nq-base' or"
" 'facebook/dpr-ctx_encoder-multiset-base'"
)
},
)
output_dir: Optional[str] = field(
default=str(Path(__file__).parent / "test_run" / "dummy-kb"),
metadata={"help": "Path to a directory where the dataset passages and the index will be saved"},
)
@dataclass
class ProcessingArguments:
num_proc: Optional[int] = field(
default=None,
metadata={
"help": "The number of processes to use to split the documents into passages. Default is single process."
},
)
batch_size: int = field(
default=16,
metadata={
"help": "The batch size to use when computing the passages embeddings using the DPR context encoder."
},
)
@dataclass
class IndexHnswArguments:
d: int = field(
default=768,
metadata={"help": "The dimension of the embeddings to pass to the HNSW Faiss index."},
)
m: int = field(
default=128,
metadata={
"help": (
"The number of bi-directional links created for every new element during the HNSW index construction."
)
},
)
if __name__ == "__main__":
logging.basicConfig(level=logging.WARNING)
logger.setLevel(logging.INFO)
parser = HfArgumentParser((RagExampleArguments, ProcessingArguments, IndexHnswArguments))
rag_example_args, processing_args, index_hnsw_args = parser.parse_args_into_dataclasses()
with TemporaryDirectory() as tmp_dir:
rag_example_args.output_dir = rag_example_args.output_dir or tmp_dir
main(rag_example_args, processing_args, index_hnsw_args)
|
transformers/examples/research_projects/rag-end2end-retriever/use_own_knowledge_dataset.py/0
|
{
"file_path": "transformers/examples/research_projects/rag-end2end-retriever/use_own_knowledge_dataset.py",
"repo_id": "transformers",
"token_count": 2578
}
| 322
|
import argparse
import logging
import os
import sys
import tempfile
from pathlib import Path
import lightning_base
import pytest
import pytorch_lightning as pl
import torch
from convert_pl_checkpoint_to_hf import convert_pl_to_hf
from distillation import distill_main
from finetune import SummarizationModule, main
from huggingface_hub import list_models
from parameterized import parameterized
from run_eval import generate_summaries_or_translations
from torch import nn
from transformers import AutoConfig, AutoModelForSeq2SeqLM
from transformers.testing_utils import CaptureStderr, CaptureStdout, TestCasePlus, require_torch_gpu, slow
from utils import label_smoothed_nll_loss, lmap, load_json
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger()
CUDA_AVAILABLE = torch.cuda.is_available()
CHEAP_ARGS = {
"max_tokens_per_batch": None,
"supervise_forward": True,
"normalize_hidden": True,
"label_smoothing": 0.2,
"eval_max_gen_length": None,
"eval_beams": 1,
"val_metric": "loss",
"save_top_k": 1,
"adafactor": True,
"early_stopping_patience": 2,
"logger_name": "default",
"length_penalty": 0.5,
"cache_dir": "",
"task": "summarization",
"num_workers": 2,
"alpha_hid": 0,
"freeze_embeds": True,
"enc_only": False,
"tgt_suffix": "",
"resume_from_checkpoint": None,
"sortish_sampler": True,
"student_decoder_layers": 1,
"val_check_interval": 1.0,
"output_dir": "",
"fp16": False, # TODO(SS): set this to CUDA_AVAILABLE if ci installs apex or start using native amp
"no_teacher": False,
"fp16_opt_level": "O1",
"gpus": 1 if CUDA_AVAILABLE else 0,
"n_tpu_cores": 0,
"max_grad_norm": 1.0,
"do_train": True,
"do_predict": True,
"accumulate_grad_batches": 1,
"server_ip": "",
"server_port": "",
"seed": 42,
"model_name_or_path": "sshleifer/bart-tiny-random",
"config_name": "",
"tokenizer_name": "facebook/bart-large",
"do_lower_case": False,
"learning_rate": 0.3,
"lr_scheduler": "linear",
"weight_decay": 0.0,
"adam_epsilon": 1e-08,
"warmup_steps": 0,
"max_epochs": 1,
"train_batch_size": 2,
"eval_batch_size": 2,
"max_source_length": 12,
"max_target_length": 12,
"val_max_target_length": 12,
"test_max_target_length": 12,
"fast_dev_run": False,
"no_cache": False,
"n_train": -1,
"n_val": -1,
"n_test": -1,
"student_encoder_layers": 1,
"freeze_encoder": False,
"auto_scale_batch_size": False,
"overwrite_output_dir": False,
"student": None,
}
def _dump_articles(path: Path, articles: list):
content = "\n".join(articles)
Path(path).open("w").writelines(content)
ARTICLES = [" Sam ate lunch today.", "Sams lunch ingredients."]
SUMMARIES = ["A very interesting story about what I ate for lunch.", "Avocado, celery, turkey, coffee"]
T5_TINY = "patrickvonplaten/t5-tiny-random"
T5_TINIER = "sshleifer/t5-tinier-random"
BART_TINY = "sshleifer/bart-tiny-random"
MBART_TINY = "sshleifer/tiny-mbart"
MARIAN_TINY = "sshleifer/tiny-marian-en-de"
FSMT_TINY = "stas/tiny-wmt19-en-de"
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
logging.disable(logging.CRITICAL) # remove noisy download output from tracebacks
def make_test_data_dir(tmp_dir):
for split in ["train", "val", "test"]:
_dump_articles(os.path.join(tmp_dir, f"{split}.source"), ARTICLES)
_dump_articles(os.path.join(tmp_dir, f"{split}.target"), SUMMARIES)
return tmp_dir
class TestSummarizationDistiller(TestCasePlus):
@classmethod
def setUpClass(cls):
logging.disable(logging.CRITICAL) # remove noisy download output from tracebacks
return cls
@slow
@require_torch_gpu
def test_hub_configs(self):
"""I put require_torch_gpu cause I only want this to run with self-scheduled."""
model_list = list_models()
org = "sshleifer"
model_ids = [x.modelId for x in model_list if x.modelId.startswith(org)]
allowed_to_be_broken = ["sshleifer/blenderbot-3B", "sshleifer/blenderbot-90M"]
failures = []
for m in model_ids:
if m in allowed_to_be_broken:
continue
try:
AutoConfig.from_pretrained(m)
except Exception:
failures.append(m)
assert not failures, f"The following models could not be loaded through AutoConfig: {failures}"
def test_distill_no_teacher(self):
updates = {"student_encoder_layers": 2, "student_decoder_layers": 1, "no_teacher": True}
self._test_distiller_cli(updates)
def test_distill_checkpointing_with_teacher(self):
updates = {
"student_encoder_layers": 2,
"student_decoder_layers": 1,
"max_epochs": 4,
"val_check_interval": 0.25,
"alpha_hid": 2.0,
"model_name_or_path": "IGNORE_THIS_IT_DOESNT_GET_USED",
}
model = self._test_distiller_cli(updates, check_contents=False)
ckpts = list(Path(model.output_dir).glob("*.ckpt"))
self.assertEqual(1, len(ckpts))
transformer_ckpts = list(Path(model.output_dir).glob("**/*.bin"))
self.assertEqual(len(transformer_ckpts), 2)
examples = lmap(str.strip, Path(model.hparams.data_dir).joinpath("test.source").open().readlines())
out_path = tempfile.mktemp() # XXX: not being cleaned up
generate_summaries_or_translations(examples, out_path, str(model.output_dir / "best_tfmr"))
self.assertTrue(Path(out_path).exists())
out_path_new = self.get_auto_remove_tmp_dir()
convert_pl_to_hf(ckpts[0], transformer_ckpts[0].parent, out_path_new)
assert os.path.exists(os.path.join(out_path_new, "pytorch_model.bin"))
def test_loss_fn(self):
model = AutoModelForSeq2SeqLM.from_pretrained(BART_TINY)
input_ids, mask = model.dummy_inputs["input_ids"], model.dummy_inputs["attention_mask"]
target_ids = torch.tensor([[0, 4, 8, 2], [0, 8, 2, 1]], dtype=torch.long, device=model.device)
decoder_input_ids = target_ids[:, :-1].contiguous() # Why this line?
lm_labels = target_ids[:, 1:].clone() # why clone?
model_computed_loss = model(
input_ids, attention_mask=mask, decoder_input_ids=decoder_input_ids, labels=lm_labels, use_cache=False
).loss
logits = model(input_ids, attention_mask=mask, decoder_input_ids=decoder_input_ids, use_cache=False).logits
lprobs = nn.functional.log_softmax(logits, dim=-1)
smoothed_loss, nll_loss = label_smoothed_nll_loss(
lprobs, lm_labels, 0.1, ignore_index=model.config.pad_token_id
)
with self.assertRaises(AssertionError):
# TODO: understand why this breaks
self.assertEqual(nll_loss, model_computed_loss)
def test_distill_mbart(self):
updates = {
"student_encoder_layers": 2,
"student_decoder_layers": 1,
"num_train_epochs": 4,
"val_check_interval": 0.25,
"alpha_hid": 2.0,
"task": "translation",
"model_name_or_path": "IGNORE_THIS_IT_DOESNT_GET_USED",
"tokenizer_name": MBART_TINY,
"teacher": MBART_TINY,
"src_lang": "en_XX",
"tgt_lang": "ro_RO",
}
model = self._test_distiller_cli(updates, check_contents=False)
assert model.model.config.model_type == "mbart"
ckpts = list(Path(model.output_dir).glob("*.ckpt"))
self.assertEqual(1, len(ckpts))
transformer_ckpts = list(Path(model.output_dir).glob("**/*.bin"))
all_files = list(Path(model.output_dir).glob("best_tfmr/*"))
assert len(all_files) > 2
self.assertEqual(len(transformer_ckpts), 2)
def test_distill_t5(self):
updates = {
"student_encoder_layers": 1,
"student_decoder_layers": 1,
"alpha_hid": 2.0,
"teacher": T5_TINY,
"model_name_or_path": T5_TINY,
"tokenizer_name": T5_TINY,
}
self._test_distiller_cli(updates)
def test_distill_different_base_models(self):
updates = {
"teacher": T5_TINY,
"student": T5_TINIER,
"model_name_or_path": T5_TINIER,
"tokenizer_name": T5_TINIER,
}
self._test_distiller_cli(updates)
def _test_distiller_cli(self, updates, check_contents=True):
default_updates = {
"label_smoothing": 0.0,
"early_stopping_patience": -1,
"train_batch_size": 1,
"eval_batch_size": 2,
"max_epochs": 2,
"alpha_mlm": 0.2,
"alpha_ce": 0.8,
"do_predict": True,
"model_name_or_path": "sshleifer/tinier_bart",
"teacher": CHEAP_ARGS["model_name_or_path"],
"val_check_interval": 0.5,
}
default_updates.update(updates)
args_d: dict = CHEAP_ARGS.copy()
tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir())
output_dir = self.get_auto_remove_tmp_dir()
args_d.update(data_dir=tmp_dir, output_dir=output_dir, **default_updates)
model = distill_main(argparse.Namespace(**args_d))
if not check_contents:
return model
contents = os.listdir(output_dir)
contents = {os.path.basename(p) for p in contents}
ckpt_files = [p for p in contents if p.endswith("ckpt")]
assert len(ckpt_files) > 0
self.assertIn("test_generations.txt", contents)
self.assertIn("test_results.txt", contents)
metrics = load_json(model.metrics_save_path)
last_step_stats = metrics["val"][-1]
self.assertGreaterEqual(last_step_stats["val_avg_gen_time"], 0.01)
self.assertGreaterEqual(1.0, last_step_stats["val_avg_gen_time"])
self.assertIsInstance(last_step_stats[f"val_avg_{model.val_metric}"], float)
desired_n_evals = int(args_d["max_epochs"] * (1 / args_d["val_check_interval"]) + 1)
self.assertEqual(len(metrics["val"]), desired_n_evals)
self.assertEqual(len(metrics["test"]), 1)
return model
class TestTheRest(TestCasePlus):
@parameterized.expand(
[T5_TINY, BART_TINY, MBART_TINY, MARIAN_TINY, FSMT_TINY],
)
def test_finetune(self, model):
args_d: dict = CHEAP_ARGS.copy()
task = "translation" if model in [MBART_TINY, MARIAN_TINY, FSMT_TINY] else "summarization"
args_d["label_smoothing"] = 0.1 if task == "translation" else 0
tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir())
output_dir = self.get_auto_remove_tmp_dir()
args_d.update(
data_dir=tmp_dir,
model_name_or_path=model,
tokenizer_name=None,
train_batch_size=2,
eval_batch_size=2,
output_dir=output_dir,
do_predict=True,
task=task,
src_lang="en_XX",
tgt_lang="ro_RO",
freeze_encoder=True,
freeze_embeds=True,
)
assert "n_train" in args_d
args = argparse.Namespace(**args_d)
module = main(args)
input_embeds = module.model.get_input_embeddings()
assert not input_embeds.weight.requires_grad
if model == T5_TINY:
lm_head = module.model.lm_head
assert not lm_head.weight.requires_grad
assert (lm_head.weight == input_embeds.weight).all().item()
elif model == FSMT_TINY:
fsmt = module.model.model
embed_pos = fsmt.decoder.embed_positions
assert not embed_pos.weight.requires_grad
assert not fsmt.decoder.embed_tokens.weight.requires_grad
# check that embeds are not the same
assert fsmt.decoder.embed_tokens != fsmt.encoder.embed_tokens
else:
bart = module.model.model
embed_pos = bart.decoder.embed_positions
assert not embed_pos.weight.requires_grad
assert not bart.shared.weight.requires_grad
# check that embeds are the same
assert bart.decoder.embed_tokens == bart.encoder.embed_tokens
assert bart.decoder.embed_tokens == bart.shared
example_batch = load_json(module.output_dir / "text_batch.json")
assert isinstance(example_batch, dict)
assert len(example_batch) >= 4
def test_finetune_extra_model_args(self):
args_d: dict = CHEAP_ARGS.copy()
task = "summarization"
tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir())
args_d.update(
data_dir=tmp_dir,
tokenizer_name=None,
train_batch_size=2,
eval_batch_size=2,
do_predict=False,
task=task,
src_lang="en_XX",
tgt_lang="ro_RO",
freeze_encoder=True,
freeze_embeds=True,
)
# test models whose config includes the extra_model_args
model = BART_TINY
output_dir = self.get_auto_remove_tmp_dir()
args_d1 = args_d.copy()
args_d1.update(
model_name_or_path=model,
output_dir=output_dir,
)
extra_model_params = ("encoder_layerdrop", "decoder_layerdrop", "dropout", "attention_dropout")
for p in extra_model_params:
args_d1[p] = 0.5
args = argparse.Namespace(**args_d1)
model = main(args)
for p in extra_model_params:
assert getattr(model.config, p) == 0.5, f"failed to override the model config for param {p}"
# test models whose config doesn't include the extra_model_args
model = T5_TINY
output_dir = self.get_auto_remove_tmp_dir()
args_d2 = args_d.copy()
args_d2.update(
model_name_or_path=model,
output_dir=output_dir,
)
unsupported_param = "encoder_layerdrop"
args_d2[unsupported_param] = 0.5
args = argparse.Namespace(**args_d2)
with pytest.raises(Exception) as excinfo:
model = main(args)
assert str(excinfo.value) == f"model config doesn't have a `{unsupported_param}` attribute"
def test_finetune_lr_schedulers(self):
args_d: dict = CHEAP_ARGS.copy()
task = "summarization"
tmp_dir = make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir())
model = BART_TINY
output_dir = self.get_auto_remove_tmp_dir()
args_d.update(
data_dir=tmp_dir,
model_name_or_path=model,
output_dir=output_dir,
tokenizer_name=None,
train_batch_size=2,
eval_batch_size=2,
do_predict=False,
task=task,
src_lang="en_XX",
tgt_lang="ro_RO",
freeze_encoder=True,
freeze_embeds=True,
)
# emulate finetune.py
parser = argparse.ArgumentParser()
parser = pl.Trainer.add_argparse_args(parser)
parser = SummarizationModule.add_model_specific_args(parser, os.getcwd())
args = {"--help": True}
# --help test
with pytest.raises(SystemExit) as excinfo:
with CaptureStdout() as cs:
args = parser.parse_args(args)
assert False, "--help is expected to sys.exit"
assert excinfo.type is SystemExit
expected = lightning_base.arg_to_scheduler_metavar
assert expected in cs.out, "--help is expected to list the supported schedulers"
# --lr_scheduler=non_existing_scheduler test
unsupported_param = "non_existing_scheduler"
args = {f"--lr_scheduler={unsupported_param}"}
with pytest.raises(SystemExit) as excinfo:
with CaptureStderr() as cs:
args = parser.parse_args(args)
assert False, "invalid argument is expected to sys.exit"
assert excinfo.type is SystemExit
expected = f"invalid choice: '{unsupported_param}'"
assert expected in cs.err, f"should have bailed on invalid choice of scheduler {unsupported_param}"
# --lr_scheduler=existing_scheduler test
supported_param = "cosine"
args_d1 = args_d.copy()
args_d1["lr_scheduler"] = supported_param
args = argparse.Namespace(**args_d1)
model = main(args)
assert (
getattr(model.hparams, "lr_scheduler") == supported_param
), f"lr_scheduler={supported_param} shouldn't fail"
|
transformers/examples/research_projects/seq2seq-distillation/_test_seq2seq_examples.py/0
|
{
"file_path": "transformers/examples/research_projects/seq2seq-distillation/_test_seq2seq_examples.py",
"repo_id": "transformers",
"token_count": 7908
}
| 323
|
<jupyter_start><jupyter_code># %pip install-r requirements.txt<jupyter_output><empty_output><jupyter_text>**Note**: This demo is adapted from the LXMERT Demo present here: https://github.com/huggingface/transformers/tree/main/examples/research_projects/lxmert<jupyter_code>from IPython.display import Image, display
import PIL.Image
import io
import torch
import numpy as np
from processing_image import Preprocess
from visualizing_image import SingleImageViz
from modeling_frcnn import GeneralizedRCNN
from utils import Config
import utils
from transformers import VisualBertForQuestionAnswering, BertTokenizerFast
# URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/images/input.jpg"
URL = "https://vqa.cloudcv.org/media/test2014/COCO_test2014_000000262567.jpg"
OBJ_URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/genome/1600-400-20/objects_vocab.txt"
ATTR_URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/genome/1600-400-20/attributes_vocab.txt"
VQA_URL = "https://dl.fbaipublicfiles.com/pythia/data/answers_vqa.txt"
# for visualizing output
def showarray(a, fmt="jpeg"):
a = np.uint8(np.clip(a, 0, 255))
f = io.BytesIO()
PIL.Image.fromarray(a).save(f, fmt)
display(Image(data=f.getvalue()))
# load object, attribute, and answer labels
objids = utils.get_data(OBJ_URL)
attrids = utils.get_data(ATTR_URL)
vqa_answers = utils.get_data(VQA_URL)
# load models and model components
frcnn_cfg = Config.from_pretrained("unc-nlp/frcnn-vg-finetuned")
frcnn = GeneralizedRCNN.from_pretrained("unc-nlp/frcnn-vg-finetuned", config=frcnn_cfg)
image_preprocess = Preprocess(frcnn_cfg)
bert_tokenizer = BertTokenizerFast.from_pretrained("bert-base-uncased")
visualbert_vqa = VisualBertForQuestionAnswering.from_pretrained("uclanlp/visualbert-vqa")
# image viz
frcnn_visualizer = SingleImageViz(URL, id2obj=objids, id2attr=attrids)
# run frcnn
images, sizes, scales_yx = image_preprocess(URL)
output_dict = frcnn(
images,
sizes,
scales_yx=scales_yx,
padding="max_detections",
max_detections=frcnn_cfg.max_detections,
return_tensors="pt",
)
# add boxes and labels to the image
frcnn_visualizer.draw_boxes(
output_dict.get("boxes"),
output_dict.pop("obj_ids"),
output_dict.pop("obj_probs"),
output_dict.pop("attr_ids"),
output_dict.pop("attr_probs"),
)
showarray(frcnn_visualizer._get_buffer())
# test_questions_for_url1 = [
# "Where is this scene?",
# "what is the man riding?",
# "What is the man wearing?",
# "What is the color of the horse?"
# ]
test_questions_for_url2 = [
"Where is the cat?",
"What is near the disk?",
"What is the color of the table?",
"What is the color of the cat?",
"What is the shape of the monitor?",
]
# Very important that the boxes are normalized
# normalized_boxes = output_dict.get("normalized_boxes")
features = output_dict.get("roi_features")
for test_question in test_questions_for_url2:
test_question = [test_question]
inputs = bert_tokenizer(
test_question,
padding="max_length",
max_length=20,
truncation=True,
return_token_type_ids=True,
return_attention_mask=True,
add_special_tokens=True,
return_tensors="pt",
)
output_vqa = visualbert_vqa(
input_ids=inputs.input_ids,
attention_mask=inputs.attention_mask,
visual_embeds=features,
visual_attention_mask=torch.ones(features.shape[:-1]),
token_type_ids=inputs.token_type_ids,
output_attentions=False,
)
# get prediction
pred_vqa = output_vqa["logits"].argmax(-1)
print("Question:", test_question)
print("prediction from VisualBert VQA:", vqa_answers[pred_vqa])<jupyter_output>Question: ['Where is the cat?']
prediction from VisualBert VQA: outside
Question: ['What is near the disk?']
prediction from VisualBert VQA: nothing
Question: ['What is the color of the table?']
prediction from VisualBert VQA: brown
Question: ['What is the color of the cat?']
prediction from VisualBert VQA: gray
Question: ['What is the shape of the monitor?']
prediction from VisualBert VQA: square
|
transformers/examples/research_projects/visual_bert/demo.ipynb/0
|
{
"file_path": "transformers/examples/research_projects/visual_bert/demo.ipynb",
"repo_id": "transformers",
"token_count": 1630
}
| 324
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
"""
Fine-tuning a 🤗 Transformers model for image classification.
Here is the full list of checkpoints on the hub that can be fine-tuned by this script:
https://huggingface.co/models?filter=image-classification
"""
import json
import logging
import os
import sys
from dataclasses import dataclass, field
from typing import Optional
import evaluate
import numpy as np
import tensorflow as tf
from datasets import load_dataset
from PIL import Image
import transformers
from transformers import (
TF_MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING,
AutoConfig,
AutoImageProcessor,
DefaultDataCollator,
HfArgumentParser,
PushToHubCallback,
TFAutoModelForImageClassification,
TFTrainingArguments,
create_optimizer,
set_seed,
)
from transformers.keras_callbacks import KerasMetricCallback
from transformers.modeling_tf_utils import keras
from transformers.trainer_utils import get_last_checkpoint, is_main_process
from transformers.utils import check_min_version, send_example_telemetry
from transformers.utils.versions import require_version
logger = logging.getLogger(__name__)
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.45.0.dev0")
require_version("datasets>=1.8.0", "To fix: pip install -r examples/pytorch/image-classification/requirements.txt")
MODEL_CONFIG_CLASSES = list(TF_MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING.keys())
MODEL_TYPES = tuple(conf.model_type for conf in MODEL_CONFIG_CLASSES)
def pil_loader(path: str):
with open(path, "rb") as f:
im = Image.open(f)
return im.convert("RGB")
@dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
Using `HfArgumentParser` we can turn this class into argparse arguments to be able to specify
them on the command line.
"""
dataset_name: Optional[str] = field(
default=None,
metadata={
"help": "Name of a dataset from the hub (could be your own, possibly private dataset hosted on the hub)."
},
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
train_dir: Optional[str] = field(default=None, metadata={"help": "A folder containing the training data."})
validation_dir: Optional[str] = field(default=None, metadata={"help": "A folder containing the validation data."})
train_val_split: Optional[float] = field(
default=0.15, metadata={"help": "Percent to split off of train for validation."}
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
)
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
)
},
)
max_predict_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of prediction examples to this "
"value if set."
)
},
)
def __post_init__(self):
if self.dataset_name is None and (self.train_dir is None and self.validation_dir is None):
raise ValueError(
"You must specify either a dataset name from the hub or a train and/or validation directory."
)
@dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
default="google/vit-base-patch16-224-in21k",
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"},
)
model_type: Optional[str] = field(
default=None,
metadata={"help": "If training from scratch, pass a model type from the list: " + ", ".join(MODEL_TYPES)},
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from s3"}
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
image_processor_name: str = field(default=None, metadata={"help": "Name or path of preprocessor config."})
token: str = field(
default=None,
metadata={
"help": (
"The token to use as HTTP bearer authorization for remote files. If not specified, will use the token "
"generated when running `huggingface-cli login` (stored in `~/.huggingface`)."
)
},
)
trust_remote_code: bool = field(
default=False,
metadata={
"help": (
"Whether to trust the execution of code from datasets/models defined on the Hub."
" This option should only be set to `True` for repositories you trust and in which you have read the"
" code, as it will execute code present on the Hub on your local machine."
)
},
)
ignore_mismatched_sizes: bool = field(
default=False,
metadata={"help": "Will enable to load a pretrained model whose head dimensions are different."},
)
def center_crop(image, size):
size = (size, size) if isinstance(size, int) else size
orig_height, orig_width, _ = image.shape
crop_height, crop_width = size
top = (orig_height - orig_width) // 2
left = (orig_width - crop_width) // 2
image = tf.image.crop_to_bounding_box(image, top, left, crop_height, crop_width)
return image
# Numpy and TensorFlow compatible version of PyTorch RandomResizedCrop. Code adapted from:
# https://pytorch.org/vision/main/_modules/torchvision/transforms/transforms.html#RandomResizedCrop
def random_crop(image, scale=(0.08, 1.0), ratio=(3.0 / 4.0, 4.0 / 3.0)):
height, width, _ = image.shape
area = height * width
log_ratio = np.log(ratio)
for _ in range(10):
target_area = np.random.uniform(*scale) * area
aspect_ratio = np.exp(np.random.uniform(*log_ratio))
w = int(round(np.sqrt(target_area * aspect_ratio)))
h = int(round(np.sqrt(target_area / aspect_ratio)))
if 0 < w <= width and 0 < h <= height:
i = np.random.randint(0, height - h + 1)
j = np.random.randint(0, width - w + 1)
return image[i : i + h, j : j + w, :]
# Fallback to central crop
in_ratio = float(width) / float(height)
w = width if in_ratio < min(ratio) else int(round(height * max(ratio)))
h = height if in_ratio > max(ratio) else int(round(width / min(ratio)))
i = (height - h) // 2
j = (width - w) // 2
return image[i : i + h, j : j + w, :]
def random_resized_crop(image, size, scale=(0.08, 1.0), ratio=(3.0 / 4.0, 4.0 / 3.0)):
size = (size, size) if isinstance(size, int) else size
image = random_crop(image, scale, ratio)
image = tf.image.resize(image, size)
return image
def main():
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TFTrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your Python/TensorFlow versions.
send_example_telemetry("run_image_classification", model_args, data_args, framework="tensorflow")
# Checkpoints. Find the checkpoint the use when loading the model.
checkpoint = None
if os.path.isdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir:
checkpoint = get_last_checkpoint(training_args.output_dir)
if checkpoint is None and len(os.listdir(training_args.output_dir)) > 0:
raise ValueError(
f"Output directory ({training_args.output_dir}) already exists and is not empty. "
"Use --overwrite_output_dir to overcome."
)
elif checkpoint is not None and training_args.resume_from_checkpoint is None:
logger.info(
f"Checkpoint detected, resuming training at {checkpoint}. To avoid this behavior, change "
"the `--output_dir` or add `--overwrite_output_dir` to train from scratch."
)
# Setup logging
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
handlers=[logging.StreamHandler(sys.stdout)],
)
log_level = training_args.get_process_log_level()
logger.setLevel(log_level)
# Set the verbosity to info of the Transformers logger (on main process only):
if is_main_process(training_args.local_rank):
transformers.utils.logging.set_verbosity_info()
transformers.utils.logging.enable_default_handler()
transformers.utils.logging.enable_explicit_format()
logger.info(f"Training/evaluation parameters {training_args}")
# region Dataset and labels
# Set seed before initializing model.
set_seed(training_args.seed)
# Initialize our dataset and prepare it for the 'image-classification' task.
if data_args.dataset_name is not None:
dataset = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
task="image-classification",
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
else:
data_files = {}
if data_args.train_dir is not None:
data_files["train"] = os.path.join(data_args.train_dir, "**")
if data_args.validation_dir is not None:
data_files["validation"] = os.path.join(data_args.validation_dir, "**")
dataset = load_dataset(
"imagefolder",
data_files=data_files,
cache_dir=model_args.cache_dir,
task="image-classification",
)
# See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
# https://huggingface.co/docs/datasets/loading_datasets.
# Prepare label mappings.
# We'll include these in the model's config to get human readable labels in the Inference API.
labels = dataset["train"].features["labels"].names
label2id, id2label = {}, {}
for i, label in enumerate(labels):
label2id[label] = str(i)
id2label[str(i)] = label
# Load model image processor and configuration
config = AutoConfig.from_pretrained(
model_args.config_name or model_args.model_name_or_path,
num_labels=len(labels),
label2id=label2id,
id2label=id2label,
finetuning_task="image-classification",
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
image_processor = AutoImageProcessor.from_pretrained(
model_args.image_processor_name or model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
# If we don't have a validation split, split off a percentage of train as validation.
data_args.train_val_split = None if "validation" in dataset.keys() else data_args.train_val_split
if isinstance(data_args.train_val_split, float) and data_args.train_val_split > 0.0:
split = dataset["train"].train_test_split(data_args.train_val_split)
dataset["train"] = split["train"]
dataset["validation"] = split["test"]
# Define our data preprocessing function. It takes an image file path as input and returns
# Write a note describing the resizing behaviour.
if "shortest_edge" in image_processor.size:
# We instead set the target size as (shortest_edge, shortest_edge) to here to ensure all images are batchable.
image_size = (image_processor.size["shortest_edge"], image_processor.size["shortest_edge"])
else:
image_size = (image_processor.size["height"], image_processor.size["width"])
def _train_transforms(image):
img_size = image_size
image = keras.utils.img_to_array(image)
image = random_resized_crop(image, size=img_size)
image = tf.image.random_flip_left_right(image)
image /= 255.0
image = (image - image_processor.image_mean) / image_processor.image_std
image = tf.transpose(image, perm=[2, 0, 1])
return image
def _val_transforms(image):
image = keras.utils.img_to_array(image)
image = tf.image.resize(image, size=image_size)
# image = np.array(image) # FIXME - use tf.image function
image = center_crop(image, size=image_size)
image /= 255.0
image = (image - image_processor.image_mean) / image_processor.image_std
image = tf.transpose(image, perm=[2, 0, 1])
return image
def train_transforms(example_batch):
"""Apply _train_transforms across a batch."""
example_batch["pixel_values"] = [
_train_transforms(pil_img.convert("RGB")) for pil_img in example_batch["image"]
]
return example_batch
def val_transforms(example_batch):
"""Apply _val_transforms across a batch."""
example_batch["pixel_values"] = [_val_transforms(pil_img.convert("RGB")) for pil_img in example_batch["image"]]
return example_batch
train_dataset = None
if training_args.do_train:
if "train" not in dataset:
raise ValueError("--do_train requires a train dataset")
train_dataset = dataset["train"]
if data_args.max_train_samples is not None:
train_dataset = train_dataset.shuffle(seed=training_args.seed).select(range(data_args.max_train_samples))
train_dataset = train_dataset.map(
train_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
eval_dataset = None
if training_args.do_eval:
if "validation" not in dataset:
raise ValueError("--do_eval requires a validation dataset")
eval_dataset = dataset["validation"]
if data_args.max_eval_samples is not None:
eval_dataset = eval_dataset.select(range(data_args.max_eval_samples))
# Set the validation transforms
eval_dataset = eval_dataset.map(
val_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
predict_dataset = None
if training_args.do_predict:
if "test" not in dataset:
raise ValueError("--do_predict requires a test dataset")
predict_dataset = dataset["test"]
if data_args.max_predict_samples is not None:
predict_dataset = predict_dataset.select(range(data_args.max_predict_samples))
# Set the test transforms
predict_dataset = predict_dataset.map(
val_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
collate_fn = DefaultDataCollator(return_tensors="np")
# Load the accuracy metric from the datasets package
metric = evaluate.load("accuracy", cache_dir=model_args.cache_dir)
# Define our compute_metrics function. It takes an `EvalPrediction` object (a namedtuple with a
# predictions and label_ids field) and has to return a dictionary string to float.
def compute_metrics(p):
"""Computes accuracy on a batch of predictions"""
logits, label_ids = p
predictions = np.argmax(logits, axis=-1)
metrics = metric.compute(predictions=predictions, references=label_ids)
return metrics
with training_args.strategy.scope():
if checkpoint is None:
model_path = model_args.model_name_or_path
else:
model_path = checkpoint
model = TFAutoModelForImageClassification.from_pretrained(
model_path,
config=config,
from_pt=bool(".bin" in model_path),
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
ignore_mismatched_sizes=model_args.ignore_mismatched_sizes,
)
num_replicas = training_args.strategy.num_replicas_in_sync
total_train_batch_size = training_args.per_device_train_batch_size * num_replicas
total_eval_batch_size = training_args.per_device_eval_batch_size * num_replicas
dataset_options = tf.data.Options()
dataset_options.experimental_distribute.auto_shard_policy = tf.data.experimental.AutoShardPolicy.OFF
if training_args.do_train:
num_train_steps = int(len(train_dataset) * training_args.num_train_epochs)
if training_args.warmup_steps > 0:
num_warmpup_steps = int(training_args.warmup_steps)
elif training_args.warmup_ratio > 0:
num_warmpup_steps = int(training_args.warmup_ratio * num_train_steps)
else:
num_warmpup_steps = 0
optimizer, _ = create_optimizer(
init_lr=training_args.learning_rate,
num_train_steps=num_train_steps,
num_warmup_steps=num_warmpup_steps,
adam_beta1=training_args.adam_beta1,
adam_beta2=training_args.adam_beta2,
adam_epsilon=training_args.adam_epsilon,
weight_decay_rate=training_args.weight_decay,
adam_global_clipnorm=training_args.max_grad_norm,
)
# model.prepare_tf_dataset() wraps a Hugging Face dataset in a tf.data.Dataset which is ready to use in
# training. This is the recommended way to use a Hugging Face dataset when training with Keras. You can also
# use the lower-level dataset.to_tf_dataset() method, but you will have to specify things like column names
# yourself if you use this method, whereas they are automatically inferred from the model input names when
# using model.prepare_tf_dataset()
# For more info see the docs:
# https://huggingface.co/docs/transformers/main/en/main_classes/model#transformers.TFPreTrainedModel.prepare_tf_dataset
# https://huggingface.co/docs/datasets/main/en/package_reference/main_classes#datasets.Dataset.to_tf_dataset
train_dataset = model.prepare_tf_dataset(
train_dataset,
shuffle=True,
batch_size=total_train_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
else:
optimizer = "sgd" # Just write anything because we won't be using it
if training_args.do_eval:
eval_dataset = model.prepare_tf_dataset(
eval_dataset,
shuffle=False,
batch_size=total_eval_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
if training_args.do_predict:
predict_dataset = model.prepare_tf_dataset(
predict_dataset,
shuffle=False,
batch_size=total_eval_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
# Transformers models compute the right loss for their task by default when labels are passed, and will
# use this for training unless you specify your own loss function in compile().
model.compile(optimizer=optimizer, jit_compile=training_args.xla, metrics=["accuracy"])
push_to_hub_model_id = training_args.push_to_hub_model_id
if not push_to_hub_model_id:
model_name = model_args.model_name_or_path.split("/")[-1]
push_to_hub_model_id = f"{model_name}-finetuned-image-classification"
model_card_kwargs = {
"finetuned_from": model_args.model_name_or_path,
"tasks": "image-classification",
"dataset": data_args.dataset_name,
"tags": ["image-classification", "tensorflow", "vision"],
}
callbacks = []
if eval_dataset is not None:
callbacks.append(KerasMetricCallback(metric_fn=compute_metrics, eval_dataset=eval_dataset))
if training_args.push_to_hub:
callbacks.append(
PushToHubCallback(
output_dir=training_args.output_dir,
hub_model_id=push_to_hub_model_id,
hub_token=training_args.push_to_hub_token,
tokenizer=image_processor,
**model_card_kwargs,
)
)
if training_args.do_train:
model.fit(
train_dataset,
validation_data=eval_dataset,
epochs=int(training_args.num_train_epochs),
callbacks=callbacks,
)
if training_args.do_eval:
n_eval_batches = len(eval_dataset)
eval_predictions = model.predict(eval_dataset, steps=n_eval_batches)
eval_labels = dataset["validation"]["labels"][: n_eval_batches * total_eval_batch_size]
eval_metrics = compute_metrics((eval_predictions.logits, eval_labels))
logging.info("Eval metrics:")
for metric_name, value in eval_metrics.items():
logging.info(f"{metric_name}: {value:.3f}")
if training_args.output_dir is not None:
os.makedirs(training_args.output_dir, exist_ok=True)
with open(os.path.join(training_args.output_dir, "all_results.json"), "w") as f:
f.write(json.dumps(eval_metrics))
if training_args.do_predict:
n_predict_batches = len(predict_dataset)
test_predictions = model.predict(predict_dataset, steps=n_predict_batches)
test_labels = dataset["validation"]["labels"][: n_predict_batches * total_eval_batch_size]
test_metrics = compute_metrics((test_predictions.logits, test_labels))
logging.info("Test metrics:")
for metric_name, value in test_metrics.items():
logging.info(f"{metric_name}: {value:.3f}")
if training_args.output_dir is not None and not training_args.push_to_hub:
# If we're not pushing to hub, at least save a local copy when we're done
model.save_pretrained(training_args.output_dir)
if __name__ == "__main__":
main()
|
transformers/examples/tensorflow/image-classification/run_image_classification.py/0
|
{
"file_path": "transformers/examples/tensorflow/image-classification/run_image_classification.py",
"repo_id": "transformers",
"token_count": 10437
}
| 325
|
#!/usr/bin/env python
# HF Trainer benchmarking tool
#
# This tool can be used to run and compare multiple dimensions of the HF Trainers args.
#
# It then prints a report once in github format with all the information that needs to be shared
# with others and second time in a console-friendly format, so it's easier to use for tuning things up.
#
# The main idea is:
#
# ./trainer-benchmark.py --base-cmd '<cmd args that don't change>' \
# --variations '--tf32 0|--tf32 1' '--fp16 0|--fp16 1|--bf16 1' \
# --target-metric-key train_samples_per_second
#
# The variations can be any command line argument that you want to compare and not just dtype as in
# the example.
#
# --variations allows you to compare variations in multiple dimensions.
#
# as the first dimention has 2 options and the second 3 in our example, this will run the trainer 6
# times adding one of:
#
# 1. --tf32 0 --fp16 0
# 2. --tf32 0 --fp16 1
# 3. --tf32 0 --bf16 1
# 4. --tf32 1 --fp16 0
# 5. --tf32 1 --fp16 1
# 6. --tf32 1 --bf16 1
#
# and print the results. This is just a cartesian product - and more than 2 dimensions can be used.
#
# If you want to rely on defaults, this:
# --variations '--tf32 0|--tf32 1' '--fp16 0|--fp16 1|--bf16 1'
# is identical to this:
# --variations '--tf32 0|--tf32 1' '|--fp16|--bf16'
#
# the leading empty variation in the 2nd dimension is a valid variation.
#
# So here we get the following 6 variations:
#
# 1. --tf32 0
# 2. --tf32 0 --fp16
# 3. --tf32 0 --bf16
# 4. --tf32 1
# 5. --tf32 1 --fp16
# 6. --tf32 1 --bf16
#
# In this particular case we don't know what the default tf32 setting is as it's normally
# pytorch-version dependent). That's why it's best to do an explicit setting of each variation:
# `--tf32 0|--tf32 1`
#
# Here is a full example of a train:
#
# CUDA_VISIBLE_DEVICES=0 python ./scripts/benchmark/trainer-benchmark.py \
# --base-cmd \
# ' examples/pytorch/translation/run_translation.py --model_name_or_path google-t5/t5-small \
# --output_dir output_dir --do_train --label_smoothing 0.1 --logging_strategy no \
# --save_strategy no --per_device_train_batch_size 32 --max_source_length 512 \
# --max_target_length 512 --num_train_epochs 1 --overwrite_output_dir \
# --source_lang en --target_lang ro --dataset_name wmt16 --dataset_config "ro-en" \
# --source_prefix "translate English to Romanian: " --warmup_steps 50 \
# --max_train_samples 20000 --dataloader_num_workers 2 ' \
# --target-metric-key train_samples_per_second --repeat-times 1 --variations \
# '|--fp16|--bf16' '--tf32 0|--tf32 1' --report-metric-keys train_loss \
# --repeat-times 1 --base-variation '--tf32 0'
#
# and here is a possible output:
#
#
# | Variation | Train | Diff | Train |
# | | samples | % | loss |
# | | per | | |
# | | second | | |
# |:----------------|----------:|-------:|--------:|
# | --tf32 0 | 285.11 | 0 | 2.51 |
# | --tf32 1 | 342.09 | 20 | 2.51 |
# | --fp16 --tf32 0 | 423.49 | 49 | 2.51 |
# | --fp16 --tf32 1 | 423.13 | 48 | 2.51 |
# | --bf16 --tf32 0 | 416.80 | 46 | 2.52 |
# | --bf16 --tf32 1 | 415.87 | 46 | 2.52 |
#
#
# So you can quickly compare the different outcomes.
#
# Typically running each experiment once is enough, but if the environment is unstable you can
# re-run each multiple times, e.g., 3 using --repeat-times 3 and it will report the averaged results.
#
# By default it'll use the lowest result as the base line to use as 100% and then compare the rest to
# it as can be seen from the table above, but you can also specify which combination is the one to use as
# the baseline, e.g., to change to another entry use: --base-variation '--tf32 1 --fp16 0'
#
# --target-metric-key is there to tell the program which metrics to compare - the different metric keys are
# inside output_dir/all_results.json. e.g., to measure eval performance instead of train use:
# --target-metric-key eval_samples_per_second
# but of course you will need to adjust the --base-cmd value in the example to perform evaluation as
# well (as currently it doesn't)
#
import argparse
import datetime
import io
import itertools
import json
import math
import os
import platform
import re
import shlex
import subprocess
import sys
from pathlib import Path
from statistics import fmean
import pandas as pd
import torch
from tqdm import tqdm
import transformers
nan = float("nan")
class Tee:
"""
A helper class to tee print's output into a file.
Usage:
sys.stdout = Tee(filename)
"""
def __init__(self, filename):
self.stdout = sys.stdout
self.file = open(filename, "a")
def __getattr__(self, attr):
return getattr(self.stdout, attr)
def write(self, msg):
self.stdout.write(msg)
# strip tqdm codes
self.file.write(re.sub(r"^.*\r", "", msg, 0, re.M))
def get_original_command(max_width=80, full_python_path=False):
"""
Return the original command line string that can be replayed nicely and wrapped for 80 char width.
Args:
max_width (`int`, *optional*, defaults to 80):
The width to wrap for.
full_python_path (`bool`, `optional`, defaults to `False`):
Whether to replicate the full path or just the last segment (i.e. `python`).
"""
cmd = []
# deal with critical env vars
env_keys = ["CUDA_VISIBLE_DEVICES"]
for key in env_keys:
val = os.environ.get(key, None)
if val is not None:
cmd.append(f"{key}={val}")
# python executable (not always needed if the script is executable)
python = sys.executable if full_python_path else sys.executable.split("/")[-1]
cmd.append(python)
# now the normal args
cmd += list(map(shlex.quote, sys.argv))
# split up into up to MAX_WIDTH lines with shell multi-line escapes
lines = []
current_line = ""
while len(cmd) > 0:
current_line += f"{cmd.pop(0)} "
if len(cmd) == 0 or len(current_line) + len(cmd[0]) + 1 > max_width - 1:
lines.append(current_line)
current_line = ""
return "\\\n".join(lines)
def get_base_command(args, output_dir):
# unwrap multi-line input
args.base_cmd = re.sub(r"[\\\n]+", " ", args.base_cmd)
# remove --output_dir if any and set our own
args.base_cmd = re.sub("--output_dir\s+[^\s]+", "", args.base_cmd)
args.base_cmd += f" --output_dir {output_dir}"
# ensure we have --overwrite_output_dir
args.base_cmd = re.sub("--overwrite_output_dir\s+", "", args.base_cmd)
args.base_cmd += " --overwrite_output_dir"
return [sys.executable] + shlex.split(args.base_cmd)
def process_run_single(id, cmd, variation, output_dir, target_metric_key, metric_keys, verbose):
# Enable to debug everything but the run itself, to do it fast and see the progress.
# This is useful for debugging the output formatting quickly - we can remove it later once
# everybody is happy with the output
if 0:
import random
from time import sleep
sleep(0)
return dict(
{k: random.uniform(0, 100) for k in metric_keys},
**{target_metric_key: random.choice([nan, 10.31, 100.2, 55.6666, 222.22222222])},
)
result = subprocess.run(cmd, capture_output=True, text=True)
if verbose:
print("STDOUT", result.stdout)
print("STDERR", result.stderr)
# save the streams
prefix = variation.replace(" ", "-")
with open(Path(output_dir) / f"log.{prefix}.stdout.txt", "w") as f:
f.write(result.stdout)
with open(Path(output_dir) / f"log.{prefix}.stderr.txt", "w") as f:
f.write(result.stderr)
if result.returncode != 0:
if verbose:
print("failed")
return {target_metric_key: nan}
with io.open(f"{output_dir}/all_results.json", "r", encoding="utf-8") as f:
metrics = json.load(f)
# filter out just the keys we want
return {k: v for k, v in metrics.items() if k in metric_keys}
def process_run(
id,
cmd,
variation_key,
variation,
longest_variation_len,
target_metric_key,
report_metric_keys,
repeat_times,
output_dir,
verbose,
):
results = []
metrics = []
preamble = f"{id}: {variation:<{longest_variation_len}}"
outcome = f"{preamble}: "
metric_keys = set(report_metric_keys + [target_metric_key])
for i in tqdm(range(repeat_times), desc=preamble, leave=False):
single_run_metrics = process_run_single(
id, cmd, variation, output_dir, target_metric_key, metric_keys, verbose
)
result = single_run_metrics[target_metric_key]
if not math.isnan(result):
metrics.append(single_run_metrics)
results.append(result)
outcome += "✓"
else:
outcome += "✘"
outcome = f"\33[2K\r{outcome}"
if len(metrics) > 0:
mean_metrics = {k: fmean([x[k] for x in metrics]) for k in metrics[0].keys()}
mean_target = round(mean_metrics[target_metric_key], 2)
results_str = f"{outcome} {mean_target}"
if len(metrics) > 1:
results_str += f" {tuple(round(x, 2) for x in results)}"
print(results_str)
mean_metrics[variation_key] = variation
return mean_metrics
else:
print(outcome)
return {variation_key: variation, target_metric_key: nan}
def get_versions():
properties = torch.cuda.get_device_properties(torch.device("cuda"))
return f"""
Datetime : {datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')}
Software:
transformers: {transformers.__version__}
torch : {torch.__version__}
cuda : {torch.version.cuda}
python : {platform.python_version()}
Hardware:
{torch.cuda.device_count()} GPUs : {properties.name}, {properties.total_memory/2**30:0.2f}GB
"""
def process_results(results, target_metric_key, report_metric_keys, base_variation, output_dir):
df = pd.DataFrame(results)
variation_key = "variation"
diff_key = "diff_%"
sentinel_value = nan
if base_variation is not None and len(df[df[variation_key] == base_variation]):
# this may still return nan
sentinel_value = df.loc[df[variation_key] == base_variation][target_metric_key].item()
if math.isnan(sentinel_value):
# as a fallback, use the minimal value as the sentinel
sentinel_value = df.loc[df[target_metric_key] != nan][target_metric_key].min()
# create diff column if possible
if not math.isnan(sentinel_value):
df[diff_key] = df.apply(
lambda r: round(100 * (r[target_metric_key] - sentinel_value) / sentinel_value)
if not math.isnan(r[target_metric_key])
else 0,
axis="columns",
)
# re-order columns
cols = [variation_key, target_metric_key, diff_key, *report_metric_keys]
df = df.reindex(cols, axis="columns") # reorder cols
# capitalize
df = df.rename(str.capitalize, axis="columns")
# make the cols as narrow as possible
df_github = df.rename(lambda c: c.replace("_", "<br>"), axis="columns")
df_console = df.rename(lambda c: c.replace("_", "\n"), axis="columns")
report = ["", "Copy between the cut-here-lines and paste as is to github or a forum"]
report += ["----------8<-----------------8<--------"]
report += ["*** Results:", df_github.to_markdown(index=False, floatfmt=".2f")]
report += ["```"]
report += ["*** Setup:", get_versions()]
report += ["*** The benchmark command line was:", get_original_command()]
report += ["```"]
report += ["----------8<-----------------8<--------"]
report += ["*** Results (console):", df_console.to_markdown(index=False, floatfmt=".2f")]
print("\n\n".join(report))
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
"--base-cmd",
default=None,
type=str,
required=True,
help="Base cmd",
)
parser.add_argument(
"--variations",
default=None,
type=str,
nargs="+",
required=True,
help="Multi-dimensional variations, example: '|--fp16|--bf16' '|--tf32'",
)
parser.add_argument(
"--base-variation",
default=None,
type=str,
help="Baseline variation to compare to. if None the minimal target value will be used to compare against",
)
parser.add_argument(
"--target-metric-key",
default=None,
type=str,
required=True,
help="Target metric key in output_dir/all_results.json, e.g., train_samples_per_second",
)
parser.add_argument(
"--report-metric-keys",
default="",
type=str,
help="Report metric keys - other metric keys from output_dir/all_results.json to report, e.g., train_loss. Use a single argument e.g., 'train_loss train_samples",
)
parser.add_argument(
"--repeat-times",
default=1,
type=int,
help="How many times to re-run each variation - an average will be reported",
)
parser.add_argument(
"--output_dir",
default="output_benchmark",
type=str,
help="The output directory where all the benchmark reports will go to and additionally this directory will be used to override --output_dir in the script that is being benchmarked",
)
parser.add_argument(
"--verbose",
default=False,
action="store_true",
help="Whether to show the outputs of each run or just the benchmark progress",
)
args = parser.parse_args()
output_dir = args.output_dir
Path(output_dir).mkdir(exist_ok=True)
base_cmd = get_base_command(args, output_dir)
# split each dimension into its --foo variations
dims = [list(map(str.strip, re.split(r"\|", x))) for x in args.variations]
# build a cartesian product of dimensions and convert those back into cmd-line arg strings,
# while stripping white space for inputs that were empty
variations = list(map(str.strip, map(" ".join, itertools.product(*dims))))
longest_variation_len = max(len(x) for x in variations)
# split wanted keys
report_metric_keys = args.report_metric_keys.split()
# capture prints into a log file for convenience
report_fn = f"benchmark-report-{datetime.datetime.now().strftime('%Y-%m-%d-%H-%M-%S')}.txt"
print(f"\nNote: each run's output is also logged under {output_dir}/log.*.std*.txt")
print(f"and this script's output is also piped into {report_fn}")
sys.stdout = Tee(report_fn)
print(f"\n*** Running {len(variations)} benchmarks:")
print(f"Base command: {' '.join(base_cmd)}")
variation_key = "variation"
results = []
for id, variation in enumerate(tqdm(variations, desc="Total completion: ", leave=False)):
cmd = base_cmd + variation.split()
results.append(
process_run(
id + 1,
cmd,
variation_key,
variation,
longest_variation_len,
args.target_metric_key,
report_metric_keys,
args.repeat_times,
output_dir,
args.verbose,
)
)
process_results(results, args.target_metric_key, report_metric_keys, args.base_variation, output_dir)
if __name__ == "__main__":
main()
|
transformers/scripts/benchmark/trainer-benchmark.py/0
|
{
"file_path": "transformers/scripts/benchmark/trainer-benchmark.py",
"repo_id": "transformers",
"token_count": 6341
}
| 326
|
#!/usr/bin/env python
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# this script builds a small sample spm file tests/fixtures/test_sentencepiece_no_bos.model, with features needed by pegasus
# 1. pip install sentencepiece
#
# 2. wget https://raw.githubusercontent.com/google/sentencepiece/master/data/botchan.txt
# 3. build
import sentencepiece as spm
# pegasus:
# 1. no bos
# 2. eos_id is 1
# 3. unk_id is 2
# build a sample spm file accordingly
spm.SentencePieceTrainer.train('--input=botchan.txt --model_prefix=test_sentencepiece_no_bos --bos_id=-1 --unk_id=2 --eos_id=1 --vocab_size=1000')
# 4. now update the fixture
# mv test_sentencepiece_no_bos.model ../../tests/fixtures/
|
transformers/scripts/pegasus/build_test_sample_spm_no_bos.py/0
|
{
"file_path": "transformers/scripts/pegasus/build_test_sample_spm_no_bos.py",
"repo_id": "transformers",
"token_count": 391
}
| 327
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .agent_types import AgentAudio, AgentImage, AgentText
from .agents import ReactAgent
def pull_message(step_log: dict):
try:
from gradio import ChatMessage
except ImportError:
raise ImportError("Gradio should be installed in order to launch a gradio demo.")
if step_log.get("rationale"):
yield ChatMessage(role="assistant", content=step_log["rationale"])
if step_log.get("tool_call"):
used_code = step_log["tool_call"]["tool_name"] == "code interpreter"
content = step_log["tool_call"]["tool_arguments"]
if used_code:
content = f"```py\n{content}\n```"
yield ChatMessage(
role="assistant",
metadata={"title": f"🛠️ Used tool {step_log['tool_call']['tool_name']}"},
content=str(content),
)
if step_log.get("observation"):
yield ChatMessage(role="assistant", content=f"```\n{step_log['observation']}\n```")
if step_log.get("error"):
yield ChatMessage(
role="assistant",
content=str(step_log["error"]),
metadata={"title": "💥 Error"},
)
def stream_to_gradio(agent: ReactAgent, task: str, **kwargs):
"""Runs an agent with the given task and streams the messages from the agent as gradio ChatMessages."""
try:
from gradio import ChatMessage
except ImportError:
raise ImportError("Gradio should be installed in order to launch a gradio demo.")
for step_log in agent.run(task, stream=True, **kwargs):
if isinstance(step_log, dict):
for message in pull_message(step_log):
yield message
if isinstance(step_log, AgentText):
yield ChatMessage(role="assistant", content=f"**Final answer:**\n```\n{step_log.to_string()}\n```")
elif isinstance(step_log, AgentImage):
yield ChatMessage(
role="assistant",
content={"path": step_log.to_string(), "mime_type": "image/png"},
)
elif isinstance(step_log, AgentAudio):
yield ChatMessage(
role="assistant",
content={"path": step_log.to_string(), "mime_type": "audio/wav"},
)
else:
yield ChatMessage(role="assistant", content=str(step_log))
|
transformers/src/transformers/agents/monitoring.py/0
|
{
"file_path": "transformers/src/transformers/agents/monitoring.py",
"repo_id": "transformers",
"token_count": 1129
}
| 328
|
# coding=utf-8
# Copyright 2018 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert slow tokenizers checkpoints in fast (serialization format of the `tokenizers` library)"""
import argparse
import os
import transformers
from .convert_slow_tokenizer import SLOW_TO_FAST_CONVERTERS
from .utils import logging
logging.set_verbosity_info()
logger = logging.get_logger(__name__)
TOKENIZER_CLASSES = {name: getattr(transformers, name + "Fast") for name in SLOW_TO_FAST_CONVERTERS}
def convert_slow_checkpoint_to_fast(tokenizer_name, checkpoint_name, dump_path, force_download):
if tokenizer_name is not None and tokenizer_name not in TOKENIZER_CLASSES:
raise ValueError(f"Unrecognized tokenizer name, should be one of {list(TOKENIZER_CLASSES.keys())}.")
if tokenizer_name is None:
tokenizer_names = TOKENIZER_CLASSES
else:
tokenizer_names = {tokenizer_name: getattr(transformers, tokenizer_name + "Fast")}
logger.info(f"Loading tokenizer classes: {tokenizer_names}")
for tokenizer_name in tokenizer_names:
tokenizer_class = TOKENIZER_CLASSES[tokenizer_name]
add_prefix = True
if checkpoint_name is None:
checkpoint_names = list(tokenizer_class.max_model_input_sizes.keys())
else:
checkpoint_names = [checkpoint_name]
logger.info(f"For tokenizer {tokenizer_class.__class__.__name__} loading checkpoints: {checkpoint_names}")
for checkpoint in checkpoint_names:
logger.info(f"Loading {tokenizer_class.__class__.__name__} {checkpoint}")
# Load tokenizer
tokenizer = tokenizer_class.from_pretrained(checkpoint, force_download=force_download)
# Save fast tokenizer
logger.info(f"Save fast tokenizer to {dump_path} with prefix {checkpoint} add_prefix {add_prefix}")
# For organization names we create sub-directories
if "/" in checkpoint:
checkpoint_directory, checkpoint_prefix_name = checkpoint.split("/")
dump_path_full = os.path.join(dump_path, checkpoint_directory)
elif add_prefix:
checkpoint_prefix_name = checkpoint
dump_path_full = dump_path
else:
checkpoint_prefix_name = None
dump_path_full = dump_path
logger.info(f"=> {dump_path_full} with prefix {checkpoint_prefix_name}, add_prefix {add_prefix}")
if checkpoint in list(tokenizer.pretrained_vocab_files_map.values())[0]:
file_path = list(tokenizer.pretrained_vocab_files_map.values())[0][checkpoint]
next_char = file_path.split(checkpoint)[-1][0]
if next_char == "/":
dump_path_full = os.path.join(dump_path_full, checkpoint_prefix_name)
checkpoint_prefix_name = None
logger.info(f"=> {dump_path_full} with prefix {checkpoint_prefix_name}, add_prefix {add_prefix}")
file_names = tokenizer.save_pretrained(
dump_path_full, legacy_format=False, filename_prefix=checkpoint_prefix_name
)
logger.info(f"=> File names {file_names}")
for file_name in file_names:
if not file_name.endswith("tokenizer.json"):
os.remove(file_name)
logger.info(f"=> removing {file_name}")
if __name__ == "__main__":
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--dump_path", default=None, type=str, required=True, help="Path to output generated fast tokenizer files."
)
parser.add_argument(
"--tokenizer_name",
default=None,
type=str,
help=(
f"Optional tokenizer type selected in the list of {list(TOKENIZER_CLASSES.keys())}. If not given, will "
"download and convert all the checkpoints from AWS."
),
)
parser.add_argument(
"--checkpoint_name",
default=None,
type=str,
help="Optional checkpoint name. If not given, will download and convert the canonical checkpoints from AWS.",
)
parser.add_argument(
"--force_download",
action="store_true",
help="Re-download checkpoints.",
)
args = parser.parse_args()
convert_slow_checkpoint_to_fast(args.tokenizer_name, args.checkpoint_name, args.dump_path, args.force_download)
|
transformers/src/transformers/convert_slow_tokenizers_checkpoints_to_fast.py/0
|
{
"file_path": "transformers/src/transformers/convert_slow_tokenizers_checkpoints_to_fast.py",
"repo_id": "transformers",
"token_count": 1994
}
| 329
|
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Integration with Deepspeed - kept for backward compatiblity, if you plan to make any edit, make sure to modify the file
in `integrations/deepspeed` instead.
Check: https://github.com/huggingface/transformers/pull/25599
"""
import warnings
warnings.warn(
"transformers.deepspeed module is deprecated and will be removed in a future version. Please import deepspeed modules directly from transformers.integrations",
FutureWarning,
)
# Backward compatibility imports, to make sure all those objects can be found in integrations/deepspeed
from .integrations.deepspeed import ( # noqa
HfDeepSpeedConfig,
HfTrainerDeepSpeedConfig,
deepspeed_config,
deepspeed_init,
deepspeed_load_checkpoint,
deepspeed_optim_sched,
is_deepspeed_available,
is_deepspeed_zero3_enabled,
set_hf_deepspeed_config,
unset_hf_deepspeed_config,
)
|
transformers/src/transformers/deepspeed.py/0
|
{
"file_path": "transformers/src/transformers/deepspeed.py",
"repo_id": "transformers",
"token_count": 433
}
| 330
|
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from queue import Queue
from typing import TYPE_CHECKING, Optional
if TYPE_CHECKING:
from ..models.auto import AutoTokenizer
class BaseStreamer:
"""
Base class from which `.generate()` streamers should inherit.
"""
def put(self, value):
"""Function that is called by `.generate()` to push new tokens"""
raise NotImplementedError()
def end(self):
"""Function that is called by `.generate()` to signal the end of generation"""
raise NotImplementedError()
class TextStreamer(BaseStreamer):
"""
Simple text streamer that prints the token(s) to stdout as soon as entire words are formed.
<Tip warning={true}>
The API for the streamer classes is still under development and may change in the future.
</Tip>
Parameters:
tokenizer (`AutoTokenizer`):
The tokenized used to decode the tokens.
skip_prompt (`bool`, *optional*, defaults to `False`):
Whether to skip the prompt to `.generate()` or not. Useful e.g. for chatbots.
decode_kwargs (`dict`, *optional*):
Additional keyword arguments to pass to the tokenizer's `decode` method.
Examples:
```python
>>> from transformers import AutoModelForCausalLM, AutoTokenizer, TextStreamer
>>> tok = AutoTokenizer.from_pretrained("openai-community/gpt2")
>>> model = AutoModelForCausalLM.from_pretrained("openai-community/gpt2")
>>> inputs = tok(["An increasing sequence: one,"], return_tensors="pt")
>>> streamer = TextStreamer(tok)
>>> # Despite returning the usual output, the streamer will also print the generated text to stdout.
>>> _ = model.generate(**inputs, streamer=streamer, max_new_tokens=20)
An increasing sequence: one, two, three, four, five, six, seven, eight, nine, ten, eleven,
```
"""
def __init__(self, tokenizer: "AutoTokenizer", skip_prompt: bool = False, **decode_kwargs):
self.tokenizer = tokenizer
self.skip_prompt = skip_prompt
self.decode_kwargs = decode_kwargs
# variables used in the streaming process
self.token_cache = []
self.print_len = 0
self.next_tokens_are_prompt = True
def put(self, value):
"""
Receives tokens, decodes them, and prints them to stdout as soon as they form entire words.
"""
if len(value.shape) > 1 and value.shape[0] > 1:
raise ValueError("TextStreamer only supports batch size 1")
elif len(value.shape) > 1:
value = value[0]
if self.skip_prompt and self.next_tokens_are_prompt:
self.next_tokens_are_prompt = False
return
# Add the new token to the cache and decodes the entire thing.
self.token_cache.extend(value.tolist())
text = self.tokenizer.decode(self.token_cache, **self.decode_kwargs)
# After the symbol for a new line, we flush the cache.
if text.endswith("\n"):
printable_text = text[self.print_len :]
self.token_cache = []
self.print_len = 0
# If the last token is a CJK character, we print the characters.
elif len(text) > 0 and self._is_chinese_char(ord(text[-1])):
printable_text = text[self.print_len :]
self.print_len += len(printable_text)
# Otherwise, prints until the last space char (simple heuristic to avoid printing incomplete words,
# which may change with the subsequent token -- there are probably smarter ways to do this!)
else:
printable_text = text[self.print_len : text.rfind(" ") + 1]
self.print_len += len(printable_text)
self.on_finalized_text(printable_text)
def end(self):
"""Flushes any remaining cache and prints a newline to stdout."""
# Flush the cache, if it exists
if len(self.token_cache) > 0:
text = self.tokenizer.decode(self.token_cache, **self.decode_kwargs)
printable_text = text[self.print_len :]
self.token_cache = []
self.print_len = 0
else:
printable_text = ""
self.next_tokens_are_prompt = True
self.on_finalized_text(printable_text, stream_end=True)
def on_finalized_text(self, text: str, stream_end: bool = False):
"""Prints the new text to stdout. If the stream is ending, also prints a newline."""
print(text, flush=True, end="" if not stream_end else None)
def _is_chinese_char(self, cp):
"""Checks whether CP is the codepoint of a CJK character."""
# This defines a "chinese character" as anything in the CJK Unicode block:
# https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block)
#
# Note that the CJK Unicode block is NOT all Japanese and Korean characters,
# despite its name. The modern Korean Hangul alphabet is a different block,
# as is Japanese Hiragana and Katakana. Those alphabets are used to write
# space-separated words, so they are not treated specially and handled
# like the all of the other languages.
if (
(cp >= 0x4E00 and cp <= 0x9FFF)
or (cp >= 0x3400 and cp <= 0x4DBF) #
or (cp >= 0x20000 and cp <= 0x2A6DF) #
or (cp >= 0x2A700 and cp <= 0x2B73F) #
or (cp >= 0x2B740 and cp <= 0x2B81F) #
or (cp >= 0x2B820 and cp <= 0x2CEAF) #
or (cp >= 0xF900 and cp <= 0xFAFF)
or (cp >= 0x2F800 and cp <= 0x2FA1F) #
): #
return True
return False
class TextIteratorStreamer(TextStreamer):
"""
Streamer that stores print-ready text in a queue, to be used by a downstream application as an iterator. This is
useful for applications that benefit from acessing the generated text in a non-blocking way (e.g. in an interactive
Gradio demo).
<Tip warning={true}>
The API for the streamer classes is still under development and may change in the future.
</Tip>
Parameters:
tokenizer (`AutoTokenizer`):
The tokenized used to decode the tokens.
skip_prompt (`bool`, *optional*, defaults to `False`):
Whether to skip the prompt to `.generate()` or not. Useful e.g. for chatbots.
timeout (`float`, *optional*):
The timeout for the text queue. If `None`, the queue will block indefinitely. Useful to handle exceptions
in `.generate()`, when it is called in a separate thread.
decode_kwargs (`dict`, *optional*):
Additional keyword arguments to pass to the tokenizer's `decode` method.
Examples:
```python
>>> from transformers import AutoModelForCausalLM, AutoTokenizer, TextIteratorStreamer
>>> from threading import Thread
>>> tok = AutoTokenizer.from_pretrained("openai-community/gpt2")
>>> model = AutoModelForCausalLM.from_pretrained("openai-community/gpt2")
>>> inputs = tok(["An increasing sequence: one,"], return_tensors="pt")
>>> streamer = TextIteratorStreamer(tok)
>>> # Run the generation in a separate thread, so that we can fetch the generated text in a non-blocking way.
>>> generation_kwargs = dict(inputs, streamer=streamer, max_new_tokens=20)
>>> thread = Thread(target=model.generate, kwargs=generation_kwargs)
>>> thread.start()
>>> generated_text = ""
>>> for new_text in streamer:
... generated_text += new_text
>>> generated_text
'An increasing sequence: one, two, three, four, five, six, seven, eight, nine, ten, eleven,'
```
"""
def __init__(
self, tokenizer: "AutoTokenizer", skip_prompt: bool = False, timeout: Optional[float] = None, **decode_kwargs
):
super().__init__(tokenizer, skip_prompt, **decode_kwargs)
self.text_queue = Queue()
self.stop_signal = None
self.timeout = timeout
def on_finalized_text(self, text: str, stream_end: bool = False):
"""Put the new text in the queue. If the stream is ending, also put a stop signal in the queue."""
self.text_queue.put(text, timeout=self.timeout)
if stream_end:
self.text_queue.put(self.stop_signal, timeout=self.timeout)
def __iter__(self):
return self
def __next__(self):
value = self.text_queue.get(timeout=self.timeout)
if value == self.stop_signal:
raise StopIteration()
else:
return value
|
transformers/src/transformers/generation/streamers.py/0
|
{
"file_path": "transformers/src/transformers/generation/streamers.py",
"repo_id": "transformers",
"token_count": 3625
}
| 331
|
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Integration with Deepspeed
"""
import copy
import importlib.metadata as importlib_metadata
import importlib.util
import weakref
from functools import partialmethod
from ..dependency_versions_check import dep_version_check
from ..utils import is_accelerate_available, is_torch_available, is_torch_mlu_available, logging
if is_torch_available():
import torch
logger = logging.get_logger(__name__)
def is_deepspeed_available():
package_exists = importlib.util.find_spec("deepspeed") is not None
# Check we're not importing a "deepspeed" directory somewhere but the actual library by trying to grab the version
# AND checking it has an author field in the metadata that is HuggingFace.
if package_exists:
try:
if is_torch_mlu_available():
_ = importlib_metadata.metadata("deepspeed-mlu")
return True
_ = importlib_metadata.metadata("deepspeed")
return True
except importlib_metadata.PackageNotFoundError:
return False
if is_accelerate_available() and is_deepspeed_available():
from accelerate.utils.deepspeed import HfDeepSpeedConfig as DeepSpeedConfig
else:
# Inherits from a dummy `object` if accelerate is not available, so that python succeeds to import this file.
# Deepspeed glue code will never inherit this dummy object as it checks if accelerate is available.
from builtins import object as DeepSpeedConfig
class HfDeepSpeedConfig(DeepSpeedConfig):
"""
This object contains a DeepSpeed configuration dictionary and can be quickly queried for things like zero stage.
A `weakref` of this object is stored in the module's globals to be able to access the config from areas where
things like the Trainer object is not available (e.g. `from_pretrained` and `_get_resized_embeddings`). Therefore
it's important that this object remains alive while the program is still running.
[`Trainer`] uses the `HfTrainerDeepSpeedConfig` subclass instead. That subclass has logic to sync the configuration
with values of [`TrainingArguments`] by replacing special placeholder values: `"auto"`. Without this special logic
the DeepSpeed configuration is not modified in any way.
Args:
config_file_or_dict (`Union[str, Dict]`): path to DeepSpeed config file or dict.
"""
def __init__(self, config_file_or_dict):
# set global weakref object
set_hf_deepspeed_config(self)
dep_version_check("accelerate")
dep_version_check("deepspeed")
super().__init__(config_file_or_dict)
class HfTrainerDeepSpeedConfig(HfDeepSpeedConfig):
"""
The `HfTrainerDeepSpeedConfig` object is meant to be created during `TrainingArguments` object creation and has the
same lifespan as the latter.
"""
def __init__(self, config_file_or_dict):
super().__init__(config_file_or_dict)
self._dtype = None
self.mismatches = []
def dtype(self):
if self._dtype is None:
raise ValueError("trainer_config_process() wasn't called yet to tell dtype")
return self._dtype
def is_auto(self, ds_key_long):
val = self.get_value(ds_key_long)
if val is None:
return False
else:
return val == "auto"
def fill_match(self, ds_key_long, hf_val, hf_key=None, must_match=True):
"""
A utility method that massages the config file and can optionally verify that the values match.
1. Replace "auto" values with `TrainingArguments` value.
2. If it wasn't "auto" and `must_match` is true, then check that DS config matches Trainer
config values and if mismatched add the entry to `self.mismatched` - will assert during
`trainer_config_finalize` for one or more mismatches.
"""
config, ds_key = self.find_config_node(ds_key_long)
if config is None:
return
if config.get(ds_key) == "auto":
config[ds_key] = hf_val
return
if not must_match:
return
ds_val = config.get(ds_key)
if ds_val is not None and ds_val != hf_val:
self.mismatches.append(f"- ds {ds_key_long}={ds_val} vs hf {hf_key}={hf_val}")
fill_only = partialmethod(fill_match, must_match=False)
def trainer_config_process(self, args, auto_find_batch_size=False):
"""
Adjust the config with `TrainingArguments` values. This stage is run during `TrainingArguments` object
creation.
"""
# DeepSpeed does:
# train_batch_size = world_size * train_micro_batch_size_per_gpu * gradient_accumulation_steps
train_batch_size = args.world_size * args.per_device_train_batch_size * args.gradient_accumulation_steps
self.fill_match(
"train_micro_batch_size_per_gpu",
args.per_device_train_batch_size,
"per_device_train_batch_size",
not auto_find_batch_size,
)
self.fill_match(
"gradient_accumulation_steps",
args.gradient_accumulation_steps,
"gradient_accumulation_steps",
)
self.fill_match(
"train_batch_size",
train_batch_size,
"train_batch_size (calculated)",
not auto_find_batch_size,
)
self.fill_match("gradient_clipping", args.max_grad_norm, "max_grad_norm")
self.fill_match("optimizer.params.lr", args.learning_rate, "learning_rate")
self.fill_match(
"optimizer.params.betas",
[args.adam_beta1, args.adam_beta2],
"adam_beta1+adam_beta2",
)
self.fill_match("optimizer.params.eps", args.adam_epsilon, "adam_epsilon")
self.fill_match("optimizer.params.weight_decay", args.weight_decay, "weight_decay")
self.fill_only("scheduler.params.warmup_min_lr", 0) # not a trainer arg
self.fill_match("scheduler.params.warmup_max_lr", args.learning_rate, "learning_rate")
# total_num_steps - will get set in trainer_config_finalize
# fp16
if args.fp16 or args.fp16_full_eval:
fp16_backend = "apex" if args.fp16_backend == "apex" else "amp"
else:
fp16_backend = None
if args.save_on_each_node:
# deepspeed uses shared storage by default. Let's override this setting if save_on_each_node == True
self.config["checkpoint"] = self.config.get("checkpoint", {})
self.config["checkpoint"]["use_node_local_storage"] = args.save_on_each_node
# amp: similar to the pytorch native amp - it has a bunch of optional params but we won't set
# any here unless the user did the work
self.fill_match(
"fp16.enabled",
((args.fp16 or args.fp16_full_eval) and fp16_backend == "amp"),
"fp16|fp16_full_eval+fp16_backend(amp)",
)
# apex: delegates amp work to apex (which needs to be available), but it cannot be used with any
# ZeRO features
self.fill_match("amp.enabled", fp16_backend == "apex", "fp16+fp16_backend(apex)")
self.fill_match("amp.opt_level", args.fp16_opt_level, "fp16_opt_level")
self.fill_match("bf16.enabled", (args.bf16 or args.bf16_full_eval), "bf16|bf16_full_eval")
# deepspeed's default mode is fp16 unless there is a config that says differently
if self.is_true("bf16.enabled"):
self._dtype = torch.bfloat16
elif self.is_false("fp16.enabled"):
self._dtype = torch.float32
else:
self._dtype = torch.float16
def trainer_config_finalize(self, args, model, num_training_steps):
"""
This stage is run after we have the model and know num_training_steps.
Now we can complete the configuration process.
"""
# zero
# deal with config keys that use `auto` value and rely on model's hidden_size
hidden_size_based_keys = [
"zero_optimization.reduce_bucket_size",
"zero_optimization.stage3_prefetch_bucket_size",
"zero_optimization.stage3_param_persistence_threshold",
]
hidden_size_auto_keys = [x for x in hidden_size_based_keys if self.is_auto(x)]
if len(hidden_size_auto_keys) > 0:
if hasattr(model.config, "hidden_size"):
hidden_size = model.config.hidden_size
elif hasattr(model.config, "hidden_sizes"):
# if there are many hidden sizes pick the largest one
hidden_size = max(model.config.hidden_sizes)
else:
raise ValueError(
"The model's config file has neither `hidden_size` nor `hidden_sizes` entry, "
"therefore it's not possible to automatically fill out the following `auto` entries "
f"in the DeepSpeed config file: {hidden_size_auto_keys}. You can fix that by replacing "
"`auto` values for these keys with an integer value of your choice."
)
self.fill_only("zero_optimization.reduce_bucket_size", hidden_size * hidden_size)
if self.is_zero3():
# automatically assign the optimal config values based on model config
self.fill_only(
"zero_optimization.stage3_prefetch_bucket_size",
0.9 * hidden_size * hidden_size,
)
self.fill_only(
"zero_optimization.stage3_param_persistence_threshold",
10 * hidden_size,
)
# scheduler
self.fill_match(
"scheduler.params.total_num_steps",
num_training_steps,
"num_training_steps (calculated)",
)
self.fill_match(
"scheduler.params.warmup_num_steps",
args.get_warmup_steps(num_training_steps),
"warmup_steps",
)
if len(self.mismatches) > 0:
mismatches = "\n".join(self.mismatches)
raise ValueError(
"Please correct the following DeepSpeed config values that mismatch TrainingArguments"
f" values:\n{mismatches}\nThe easiest method is to set these DeepSpeed config values to 'auto'."
)
# keep the config object global to be able to access it anywhere during TrainingArguments life-cycle
_hf_deepspeed_config_weak_ref = None
def set_hf_deepspeed_config(hf_deepspeed_config_obj):
# this is a special weakref global object to allow us to get to Deepspeed config from APIs
# that don't have an easy way to get to the Deepspeed config outside of the Trainer domain.
global _hf_deepspeed_config_weak_ref
# will go away automatically when HfDeepSpeedConfig is destroyed (when TrainingArguments is destroyed)
_hf_deepspeed_config_weak_ref = weakref.ref(hf_deepspeed_config_obj)
def unset_hf_deepspeed_config():
# useful for unit tests to ensure the global state doesn't leak - call from `tearDown` method
global _hf_deepspeed_config_weak_ref
_hf_deepspeed_config_weak_ref = None
def is_deepspeed_zero3_enabled():
if _hf_deepspeed_config_weak_ref is not None and _hf_deepspeed_config_weak_ref() is not None:
return _hf_deepspeed_config_weak_ref().is_zero3()
else:
return False
def deepspeed_config():
if _hf_deepspeed_config_weak_ref is not None and _hf_deepspeed_config_weak_ref() is not None:
return _hf_deepspeed_config_weak_ref().config
else:
return None
def deepspeed_optim_sched(trainer, hf_deepspeed_config, args, num_training_steps, model_parameters):
"""
A convenience wrapper that deals with optimizer and lr scheduler configuration.
"""
from accelerate.utils import DummyOptim, DummyScheduler
config = hf_deepspeed_config.config
# Mixing and matching DS schedulers and optimizers is supported unless Offload is enabled in which case it's:
# 1. DS scheduler + DS optimizer: Yes
# 2. HF scheduler + HF optimizer: Mostly*
# 3. DS scheduler + HF optimizer: Mostly*
# 4. HF scheduler + DS optimizer: Yes
#
# Mostly*: All non-native DeepSpeed optimizers that have both CPU and GPU implementation should work (except LAMB)
optimizer = None
if "optimizer" in config:
if args.adafactor:
raise ValueError(
"--adafactor was passed, but also found `optimizer` configured in the DeepSpeed config. "
"Only one optimizer can be configured."
)
optimizer = DummyOptim(params=model_parameters)
else:
if hf_deepspeed_config.is_offload():
logger.info(
"Detected ZeRO Offload and non-DeepSpeed optimizers: This combination should work as long as the"
" custom optimizer has both CPU and GPU implementation (except LAMB)"
)
# ds supports Adam, OneBitAdam, and Lamb optimizers and can import other optimizers from torch.
# But trainer uses AdamW by default.
optimizer = trainer.create_optimizer()
# To use other optimizers requires voiding warranty with: `zero_allow_untested_optimizer`
config["zero_allow_untested_optimizer"] = True
lr_scheduler = None
if "scheduler" in config:
lr_scheduler = DummyScheduler(optimizer)
else:
if isinstance(optimizer, DummyOptim):
def _lr_scheduler_callable(optimizer):
# create a shallow copy first, so later modifications do not affect original trainer
trainer_copy = copy.copy(trainer)
# at the time _lr_scheduler_callable is called, trainer.lr_scheduler has been set
# update it to None so that we can re-create a new scheduler
trainer_copy.lr_scheduler = None
lr_scheduler = trainer_copy.create_scheduler(
num_training_steps=num_training_steps, optimizer=optimizer
)
return lr_scheduler
lr_scheduler = DummyScheduler(optimizer, lr_scheduler_callable=_lr_scheduler_callable)
else:
lr_scheduler = trainer.create_scheduler(num_training_steps=num_training_steps, optimizer=optimizer)
return optimizer, lr_scheduler
def deepspeed_init(trainer, num_training_steps, inference=False):
"""
Init DeepSpeed, after updating the DeepSpeed configuration with any relevant Trainer's args.
If `resume_from_checkpoint` was passed then an attempt to resume from a previously saved checkpoint will be made.
Args:
trainer: Trainer object
num_training_steps: per single gpu
resume_from_checkpoint: path to a checkpoint if to resume from after normal DeepSpeedEngine load
inference: launch in inference mode (no optimizer and no lr scheduler)
auto_find_batch_size: whether to ignore the `train_micro_batch_size_per_gpu` argument as it's being
set automatically by the auto batch size finder
Returns: optimizer, lr_scheduler
We may use `deepspeed_init` more than once during the life of Trainer, when we do - it's a temp hack based on:
https://github.com/microsoft/DeepSpeed/issues/1394#issuecomment-937405374 until Deepspeed fixes a bug where it
can't resume from a checkpoint after it did some stepping https://github.com/microsoft/DeepSpeed/issues/1612
"""
from deepspeed.utils import logger as ds_logger
model = trainer.model
args = trainer.args
hf_deepspeed_config = trainer.accelerator.state.deepspeed_plugin.hf_ds_config
# resume config update - some bits like `model` and `num_training_steps` only become available during train
hf_deepspeed_config.trainer_config_finalize(args, model, num_training_steps)
# set the Deepspeed log level consistent with the Trainer
ds_logger.setLevel(args.get_process_log_level())
if inference:
# only Z3 makes sense for the inference
if not hf_deepspeed_config.is_zero3():
raise ValueError("ZeRO inference only makes sense with ZeRO Stage 3 - please adjust your config")
# in case the training config is re-used for inference
hf_deepspeed_config.del_config_sub_tree("optimizer")
hf_deepspeed_config.del_config_sub_tree("lr_scheduler")
optimizer, lr_scheduler = None, None
model_parameters = None
else:
trainer.optimizer = None # important for when deepspeed_init is used as re-init
model_parameters = list(filter(lambda p: p.requires_grad, model.parameters()))
optimizer, lr_scheduler = deepspeed_optim_sched(
trainer, hf_deepspeed_config, args, num_training_steps, model_parameters
)
# keep for quick debug:
# from pprint import pprint; pprint(config)
return optimizer, lr_scheduler
def deepspeed_load_checkpoint(deepspeed_engine, checkpoint_path, load_module_strict=True):
# it's possible that the user is trying to resume from model_path, which doesn't necessarily
# contain a deepspeed checkpoint. e.g. examples just check if the dir exists and assume it's
# a resume from a checkpoint and not just a local pretrained weight. So we check here if the
# path contains what looks like a deepspeed checkpoint
import glob
deepspeed_checkpoint_dirs = sorted(glob.glob(f"{checkpoint_path}/global_step*"))
if len(deepspeed_checkpoint_dirs) > 0:
logger.info(f"Attempting to resume from {checkpoint_path}")
# this magically updates self.optimizer and self.lr_scheduler
load_path, _ = deepspeed_engine.load_checkpoint(
checkpoint_path,
load_module_strict=load_module_strict,
load_optimizer_states=True,
load_lr_scheduler_states=True,
)
if load_path is None:
raise ValueError(f"[deepspeed] failed to resume from checkpoint {checkpoint_path}")
else:
raise ValueError(f"Can't find a valid checkpoint at {checkpoint_path}")
|
transformers/src/transformers/integrations/deepspeed.py/0
|
{
"file_path": "transformers/src/transformers/integrations/deepspeed.py",
"repo_id": "transformers",
"token_count": 7399
}
| 332
|
#include <stdio.h>
#include <assert.h>
#include "ATen/ATen.h"
#define MIN_VALUE (-1e38)
typedef at::BFloat16 bf16;
__global__ void kernel_forward_bf16(
const int B, const int T, const int C, const float *__restrict__ const _w, const bf16 *__restrict__ const _u,
const bf16 *__restrict__ const _k, const bf16 *__restrict__ const _v, bf16 *__restrict__ const _y
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset = _b * T * C + _c;
float u = float(_u[_c]);
float w = _w[_c];
const bf16 *__restrict__ const k = _k + _offset;
const bf16 *__restrict__ const v = _v + _offset;
bf16 *__restrict__ const y = _y + _offset;
// aa and bb are running sums divided by exp(pp) (to avoid overflow)
float aa = 0, bb = 0, pp = MIN_VALUE;
for (int i = 0; i < T; i++) {
const int ii = i * C;
const float kk = float(k[ii]);
const float vv = float(v[ii]);
float ww = u + kk;
float p = max(pp, ww);
float e1 = exp(pp - p);
float e2 = exp(ww - p);
y[ii] = bf16((e1 * aa + e2 * vv) / (e1 * bb + e2));
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
}
__global__ void kernel_forward_with_state_bf16(
const int B, const int T, const int C, const float *__restrict__ const _w, const bf16 *__restrict__ const _u,
const bf16 *__restrict__ const _k, const bf16 *__restrict__ const _v, bf16 *__restrict__ const _y,
float *__restrict__ const _s
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset_s = _b * C * 3 + _c * 3;
const int _offset = _b * T * C + _c;
float u = float(_u[_c]);
float w = _w[_c];
const bf16 *__restrict__ const k = _k + _offset;
const bf16 *__restrict__ const v = _v + _offset;
bf16 *__restrict__ const y = _y + _offset;
float *__restrict__ const s = _s + _offset_s;
// aa and bb are running sums divided by exp(pp) (to avoid overflow)
float aa = s[0], bb = s[1], pp = s[2];
for (int i = 0; i < T; i++) {
const int ii = i * C;
const float kk = float(k[ii]);
const float vv = float(v[ii]);
float ww = u + kk;
float p = max(pp, ww);
float e1 = exp(pp - p);
float e2 = exp(ww - p);
y[ii] = bf16(e1 * aa + e2 * vv) / (e1 * bb + e2);
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
s[0] = aa;
s[1] = bb;
s[2] = pp;
}
__global__ void kernel_backward_bf16(
const int B, const int T, const int C, const float *__restrict__ const _w, const bf16 *__restrict__ const _u,
const bf16 *__restrict__ const _k, const bf16 *__restrict__ const _v, const bf16 *__restrict__ const _y,
const bf16 *__restrict__ const _gy, bf16 *__restrict__ const _gw, bf16 *__restrict__ const _gu,
bf16 *__restrict__ const _gk, bf16 *__restrict__ const _gv
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset = _b * T * C + _c;
float u = float(_u[_c]);
float w = _w[_c];
const bf16 *__restrict__ const k = _k + _offset;
const bf16 *__restrict__ const v = _v + _offset;
const bf16 *__restrict__ const y = _y + _offset;
const bf16 *__restrict__ const gy = _gy + _offset;
bf16 *__restrict__ const gk = _gk + _offset;
bf16 *__restrict__ const gv = _gv + _offset;
float q[Tmax], r[Tmax];
float gw = 0, gu = 0, aa = 0, bb = 0, ga = 0, gb = 0, pp = MIN_VALUE;
for (int i = 0; i < T; i++) {
const int ii = i * C;
const float kk = float(k[ii]);
const float vv = float(v[ii]);
const float yy = float(y[ii]);
float ww = u + kk;
float p = max(pp, ww);
float e1 = exp(pp - p);
float e2 = exp(ww - p);
const float qq = float(gy[ii]) / (e1 * bb + e2);
gw += (ga - gb * yy) * e1 * qq;
gu += (vv - yy) * e2 * qq;
q[i] = qq;
r[i] = ww - p;
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
ga = e1 * (aa + ga);
gb = e1 * (bb + gb);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
const int _offsetBC = _b * C + _c;
_gw[_offsetBC] = bf16(gw * _w[_c]); // multiply by w because of w -> -exp(w) in python forward()
_gu[_offsetBC] = bf16(gu);
aa = 0, bb = 0, pp = MIN_VALUE;
for (int i = T - 1; i >= 0; i--) {
const int ii = i * C;
const float kk = float(k[ii]);
const float vv = float(v[ii]);
const float yy = float(y[ii]);
const float qq = q[i];
const float rr = r[i];
float e1 = qq * exp(rr);
float e2 = exp(kk + pp);
gk[ii] = bf16(e1 * (vv - yy) + e2 * (aa * vv + bb));
gv[ii] = bf16(e1 + e2 * aa);
const float ww = w + pp;
const float www = rr - u - kk;
const float p = max(ww, www);
e1 = exp(ww - p);
e2 = qq * exp(www - p);
aa = e1 * aa + e2;
bb = e1 * bb - e2 * yy;
pp = p;
}
}
void cuda_forward_bf16(int B, int T, int C, float *w, bf16 *u, bf16 *k, bf16 *v, bf16 *y) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_forward_bf16<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y);
}
void cuda_forward_with_state_bf16(int B, int T, int C, float *w, bf16 *u, bf16 *k, bf16 *v, bf16 *y, float *s) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_forward_with_state_bf16<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y, s);
}
void cuda_backward_bf16(int B, int T, int C, float *w, bf16 *u, bf16 *k, bf16 *v, bf16 *y, bf16 *gy, bf16 *gw, bf16 *gu, bf16 *gk, bf16 *gv) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_backward_bf16<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y, gy, gw, gu, gk, gv);
}
|
transformers/src/transformers/kernels/rwkv/wkv_cuda_bf16.cu/0
|
{
"file_path": "transformers/src/transformers/kernels/rwkv/wkv_cuda_bf16.cu",
"repo_id": "transformers",
"token_count": 3302
}
| 333
|
# coding=utf-8
# Copyright 2024 The ggml.ai team and The HuggingFace Inc. team. and pygguf author (github.com/99991)
# https://github.com/99991/pygguf
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Optional
import numpy as np
from tqdm import tqdm
from .integrations import (
GGUF_CONFIG_MAPPING,
GGUF_TENSOR_MAPPING,
GGUF_TOKENIZER_MAPPING,
_gguf_parse_value,
load_dequant_gguf_tensor,
)
from .utils import is_torch_available
from .utils.logging import get_logger
if is_torch_available():
import torch
logger = get_logger(__name__)
GGUF_TO_TRANSFORMERS_MAPPING = {
"ignore": {
"GGUF": {
"version": "version",
"tensor_count": "tensor_count",
"kv_count": "kv_count",
},
"general": {"file_type": "file_type", "quantization_version": "quantization_version"},
},
"config": GGUF_CONFIG_MAPPING,
"tensors": GGUF_TENSOR_MAPPING,
"tokenizer": {"tokenizer": GGUF_TOKENIZER_MAPPING["tokenizer"]},
"tokenizer_config": {"tokenizer": GGUF_TOKENIZER_MAPPING["tokenizer_config"]},
}
GGUF_SUPPORTED_ARCHITECTURES = list(GGUF_TO_TRANSFORMERS_MAPPING["tensors"].keys())
def read_field(reader, field):
value = reader.fields[field]
return [_gguf_parse_value(value.parts[_data_index], value.types) for _data_index in value.data]
def load_gguf_checkpoint(gguf_checkpoint_path, return_tensors=False):
"""
Load a GGUF file and return a dictionary of parsed parameters containing tensors, the parsed
tokenizer and config attributes.
Args:
gguf_checkpoint_path (`str`):
The path the to GGUF file to load
return_tensors (`bool`, defaults to `True`):
Whether to read the tensors from the file and return them. Not doing so is faster
and only loads the metadata in memory.
"""
try:
from gguf import GGUFReader
except (ImportError, ModuleNotFoundError):
logger.error(
"Loading a GGUF checkpoint in PyTorch, requires both PyTorch and GGUF to be installed. Please see "
"https://pytorch.org/ and https://github.com/ggerganov/llama.cpp/tree/master/gguf-py for installation instructions."
)
raise
reader = GGUFReader(gguf_checkpoint_path)
fields = reader.fields
reader_keys = list(fields.keys())
parsed_parameters = {k: {} for k in GGUF_TO_TRANSFORMERS_MAPPING}
architecture = read_field(reader, "general.architecture")[0]
model_name = read_field(reader, "general.name")
# in llama.cpp mistral models use the same architecture as llama. We need
# to add this patch to ensure things work correctly on our side.
if "llama" in architecture and "mistral" in model_name:
updated_architecture = "mistral"
else:
updated_architecture = architecture
if architecture not in GGUF_SUPPORTED_ARCHITECTURES:
raise ValueError(f"Architecture {architecture} not supported")
# List all key-value pairs in a columnized format
for gguf_key, field in reader.fields.items():
gguf_key = gguf_key.replace(architecture, updated_architecture)
split = gguf_key.split(".")
prefix = split[0]
config_key = ".".join(split[1:])
value = [_gguf_parse_value(field.parts[_data_index], field.types) for _data_index in field.data]
if len(value) == 1:
value = value[0]
if isinstance(value, str) and architecture in value:
value = value.replace(architecture, updated_architecture)
for parameter in GGUF_TO_TRANSFORMERS_MAPPING:
parameter_renames = GGUF_TO_TRANSFORMERS_MAPPING[parameter]
if prefix in parameter_renames and config_key in parameter_renames[prefix]:
renamed_config_key = parameter_renames[prefix][config_key]
if renamed_config_key == -1:
continue
if renamed_config_key is not None:
parsed_parameters[parameter][renamed_config_key] = value
if gguf_key in reader_keys:
reader_keys.remove(gguf_key)
if gguf_key in reader_keys:
logger.info(f"Some keys were not parsed and added into account {gguf_key} | {value}")
# retrieve config vocab_size from tokenizer
# Pleas refer to https://github.com/huggingface/transformers/issues/32526 for more details
if "vocab_size" not in parsed_parameters["config"]:
tokenizer_parameters = parsed_parameters["tokenizer"]
if "tokens" in tokenizer_parameters:
parsed_parameters["config"]["vocab_size"] = len(tokenizer_parameters["tokens"])
else:
logger.warning(
"Can't find a way to retrieve missing config vocab_size from tokenizer parameters. "
"This will use default value from model config class and cause unexpected behavior."
)
if return_tensors:
tensor_key_mapping = GGUF_TO_TRANSFORMERS_MAPPING["tensors"][architecture]
for tensor in tqdm(reader.tensors, desc="Converting and de-quantizing GGUF tensors..."):
renamed_tensor_name = tensor.name
for tensor_name_mapping in GGUF_TO_TRANSFORMERS_MAPPING["tensors"]:
if tensor_name_mapping in renamed_tensor_name:
renamed_tensor_name = renamed_tensor_name.replace(
tensor_name_mapping, GGUF_TO_TRANSFORMERS_MAPPING["tensors"][tensor_name_mapping]
)
shape = tensor.shape
name = tensor.name
weights = load_dequant_gguf_tensor(
shape=shape, ggml_type=tensor.tensor_type, data=tensor.data, n_bytes=int(tensor.n_bytes)
)
if architecture == "llama" and (".attn_k." in name or ".attn_q." in name):
num_heads = parsed_parameters["config"]["num_attention_heads"]
num_kv_heads = parsed_parameters["config"]["num_key_value_heads"]
if ".attn_q." in name:
weights = reverse_permute_weights(weights, num_heads, num_heads)
elif ".attn_k." in name:
weights = reverse_permute_weights(weights, num_heads, num_kv_heads)
for tensor_name in tensor_key_mapping:
if tensor_name in name:
name = name.replace(tensor_name, tensor_key_mapping[tensor_name])
# Use copy to avoid errors with numpy and pytorch
parsed_parameters["tensors"][name] = torch.from_numpy(np.copy(weights))
if len(reader_keys) > 0:
logger.info(f"Some keys of the GGUF file were not considered: {reader_keys}")
return parsed_parameters
def reverse_permute_weights(weights: np.ndarray, n_head: int, num_kv_heads: Optional[int] = None) -> np.ndarray:
# Original permutation implementation
# https://github.com/ggerganov/llama.cpp/blob/a38b884c6c4b0c256583acfaaabdf556c62fabea/convert_hf_to_gguf.py#L1402-L1408
if num_kv_heads is not None and n_head != num_kv_heads:
n_head = num_kv_heads
dim = weights.shape[0] // n_head // 2
w = weights.reshape(n_head, dim, 2, *weights.shape[1:])
return w.swapaxes(2, 1).reshape(weights.shape)
|
transformers/src/transformers/modeling_gguf_pytorch_utils.py/0
|
{
"file_path": "transformers/src/transformers/modeling_gguf_pytorch_utils.py",
"repo_id": "transformers",
"token_count": 3268
}
| 334
|
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ...utils import (
OptionalDependencyNotAvailable,
_LazyModule,
is_torch_available,
)
_import_structure = {
"configuration_align": [
"AlignConfig",
"AlignTextConfig",
"AlignVisionConfig",
],
"processing_align": ["AlignProcessor"],
}
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_align"] = [
"AlignModel",
"AlignPreTrainedModel",
"AlignTextModel",
"AlignVisionModel",
]
if TYPE_CHECKING:
from .configuration_align import (
AlignConfig,
AlignTextConfig,
AlignVisionConfig,
)
from .processing_align import AlignProcessor
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_align import (
AlignModel,
AlignPreTrainedModel,
AlignTextModel,
AlignVisionModel,
)
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
|
transformers/src/transformers/models/align/__init__.py/0
|
{
"file_path": "transformers/src/transformers/models/align/__init__.py",
"repo_id": "transformers",
"token_count": 712
}
| 335
|
# coding=utf-8
# Copyright 2018 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Auto Config class."""
import importlib
import os
import re
import warnings
from collections import OrderedDict
from typing import List, Union
from ...configuration_utils import PretrainedConfig
from ...dynamic_module_utils import get_class_from_dynamic_module, resolve_trust_remote_code
from ...utils import CONFIG_NAME, logging
logger = logging.get_logger(__name__)
CONFIG_MAPPING_NAMES = OrderedDict(
[
# Add configs here
("albert", "AlbertConfig"),
("align", "AlignConfig"),
("altclip", "AltCLIPConfig"),
("audio-spectrogram-transformer", "ASTConfig"),
("autoformer", "AutoformerConfig"),
("bark", "BarkConfig"),
("bart", "BartConfig"),
("beit", "BeitConfig"),
("bert", "BertConfig"),
("bert-generation", "BertGenerationConfig"),
("big_bird", "BigBirdConfig"),
("bigbird_pegasus", "BigBirdPegasusConfig"),
("biogpt", "BioGptConfig"),
("bit", "BitConfig"),
("blenderbot", "BlenderbotConfig"),
("blenderbot-small", "BlenderbotSmallConfig"),
("blip", "BlipConfig"),
("blip-2", "Blip2Config"),
("bloom", "BloomConfig"),
("bridgetower", "BridgeTowerConfig"),
("bros", "BrosConfig"),
("camembert", "CamembertConfig"),
("canine", "CanineConfig"),
("chameleon", "ChameleonConfig"),
("chinese_clip", "ChineseCLIPConfig"),
("chinese_clip_vision_model", "ChineseCLIPVisionConfig"),
("clap", "ClapConfig"),
("clip", "CLIPConfig"),
("clip_vision_model", "CLIPVisionConfig"),
("clipseg", "CLIPSegConfig"),
("clvp", "ClvpConfig"),
("code_llama", "LlamaConfig"),
("codegen", "CodeGenConfig"),
("cohere", "CohereConfig"),
("conditional_detr", "ConditionalDetrConfig"),
("convbert", "ConvBertConfig"),
("convnext", "ConvNextConfig"),
("convnextv2", "ConvNextV2Config"),
("cpmant", "CpmAntConfig"),
("ctrl", "CTRLConfig"),
("cvt", "CvtConfig"),
("dac", "DacConfig"),
("data2vec-audio", "Data2VecAudioConfig"),
("data2vec-text", "Data2VecTextConfig"),
("data2vec-vision", "Data2VecVisionConfig"),
("dbrx", "DbrxConfig"),
("deberta", "DebertaConfig"),
("deberta-v2", "DebertaV2Config"),
("decision_transformer", "DecisionTransformerConfig"),
("deformable_detr", "DeformableDetrConfig"),
("deit", "DeiTConfig"),
("depth_anything", "DepthAnythingConfig"),
("deta", "DetaConfig"),
("detr", "DetrConfig"),
("dinat", "DinatConfig"),
("dinov2", "Dinov2Config"),
("distilbert", "DistilBertConfig"),
("donut-swin", "DonutSwinConfig"),
("dpr", "DPRConfig"),
("dpt", "DPTConfig"),
("efficientformer", "EfficientFormerConfig"),
("efficientnet", "EfficientNetConfig"),
("electra", "ElectraConfig"),
("encodec", "EncodecConfig"),
("encoder-decoder", "EncoderDecoderConfig"),
("ernie", "ErnieConfig"),
("ernie_m", "ErnieMConfig"),
("esm", "EsmConfig"),
("falcon", "FalconConfig"),
("falcon_mamba", "FalconMambaConfig"),
("fastspeech2_conformer", "FastSpeech2ConformerConfig"),
("flaubert", "FlaubertConfig"),
("flava", "FlavaConfig"),
("fnet", "FNetConfig"),
("focalnet", "FocalNetConfig"),
("fsmt", "FSMTConfig"),
("funnel", "FunnelConfig"),
("fuyu", "FuyuConfig"),
("gemma", "GemmaConfig"),
("gemma2", "Gemma2Config"),
("git", "GitConfig"),
("glpn", "GLPNConfig"),
("gpt-sw3", "GPT2Config"),
("gpt2", "GPT2Config"),
("gpt_bigcode", "GPTBigCodeConfig"),
("gpt_neo", "GPTNeoConfig"),
("gpt_neox", "GPTNeoXConfig"),
("gpt_neox_japanese", "GPTNeoXJapaneseConfig"),
("gptj", "GPTJConfig"),
("gptsan-japanese", "GPTSanJapaneseConfig"),
("granite", "GraniteConfig"),
("graphormer", "GraphormerConfig"),
("grounding-dino", "GroundingDinoConfig"),
("groupvit", "GroupViTConfig"),
("hiera", "HieraConfig"),
("hubert", "HubertConfig"),
("ibert", "IBertConfig"),
("idefics", "IdeficsConfig"),
("idefics2", "Idefics2Config"),
("imagegpt", "ImageGPTConfig"),
("informer", "InformerConfig"),
("instructblip", "InstructBlipConfig"),
("instructblipvideo", "InstructBlipVideoConfig"),
("jamba", "JambaConfig"),
("jetmoe", "JetMoeConfig"),
("jukebox", "JukeboxConfig"),
("kosmos-2", "Kosmos2Config"),
("layoutlm", "LayoutLMConfig"),
("layoutlmv2", "LayoutLMv2Config"),
("layoutlmv3", "LayoutLMv3Config"),
("led", "LEDConfig"),
("levit", "LevitConfig"),
("lilt", "LiltConfig"),
("llama", "LlamaConfig"),
("llava", "LlavaConfig"),
("llava_next", "LlavaNextConfig"),
("llava_next_video", "LlavaNextVideoConfig"),
("longformer", "LongformerConfig"),
("longt5", "LongT5Config"),
("luke", "LukeConfig"),
("lxmert", "LxmertConfig"),
("m2m_100", "M2M100Config"),
("mamba", "MambaConfig"),
("mamba2", "Mamba2Config"),
("marian", "MarianConfig"),
("markuplm", "MarkupLMConfig"),
("mask2former", "Mask2FormerConfig"),
("maskformer", "MaskFormerConfig"),
("maskformer-swin", "MaskFormerSwinConfig"),
("mbart", "MBartConfig"),
("mctct", "MCTCTConfig"),
("mega", "MegaConfig"),
("megatron-bert", "MegatronBertConfig"),
("mgp-str", "MgpstrConfig"),
("mistral", "MistralConfig"),
("mixtral", "MixtralConfig"),
("mobilebert", "MobileBertConfig"),
("mobilenet_v1", "MobileNetV1Config"),
("mobilenet_v2", "MobileNetV2Config"),
("mobilevit", "MobileViTConfig"),
("mobilevitv2", "MobileViTV2Config"),
("mpnet", "MPNetConfig"),
("mpt", "MptConfig"),
("mra", "MraConfig"),
("mt5", "MT5Config"),
("musicgen", "MusicgenConfig"),
("musicgen_melody", "MusicgenMelodyConfig"),
("mvp", "MvpConfig"),
("nat", "NatConfig"),
("nemotron", "NemotronConfig"),
("nezha", "NezhaConfig"),
("nllb-moe", "NllbMoeConfig"),
("nougat", "VisionEncoderDecoderConfig"),
("nystromformer", "NystromformerConfig"),
("olmo", "OlmoConfig"),
("oneformer", "OneFormerConfig"),
("open-llama", "OpenLlamaConfig"),
("openai-gpt", "OpenAIGPTConfig"),
("opt", "OPTConfig"),
("owlv2", "Owlv2Config"),
("owlvit", "OwlViTConfig"),
("paligemma", "PaliGemmaConfig"),
("patchtsmixer", "PatchTSMixerConfig"),
("patchtst", "PatchTSTConfig"),
("pegasus", "PegasusConfig"),
("pegasus_x", "PegasusXConfig"),
("perceiver", "PerceiverConfig"),
("persimmon", "PersimmonConfig"),
("phi", "PhiConfig"),
("phi3", "Phi3Config"),
("pix2struct", "Pix2StructConfig"),
("plbart", "PLBartConfig"),
("poolformer", "PoolFormerConfig"),
("pop2piano", "Pop2PianoConfig"),
("prophetnet", "ProphetNetConfig"),
("pvt", "PvtConfig"),
("pvt_v2", "PvtV2Config"),
("qdqbert", "QDQBertConfig"),
("qwen2", "Qwen2Config"),
("qwen2_audio", "Qwen2AudioConfig"),
("qwen2_audio_encoder", "Qwen2AudioEncoderConfig"),
("qwen2_moe", "Qwen2MoeConfig"),
("qwen2_vl", "Qwen2VLConfig"),
("rag", "RagConfig"),
("realm", "RealmConfig"),
("recurrent_gemma", "RecurrentGemmaConfig"),
("reformer", "ReformerConfig"),
("regnet", "RegNetConfig"),
("rembert", "RemBertConfig"),
("resnet", "ResNetConfig"),
("retribert", "RetriBertConfig"),
("roberta", "RobertaConfig"),
("roberta-prelayernorm", "RobertaPreLayerNormConfig"),
("roc_bert", "RoCBertConfig"),
("roformer", "RoFormerConfig"),
("rt_detr", "RTDetrConfig"),
("rt_detr_resnet", "RTDetrResNetConfig"),
("rwkv", "RwkvConfig"),
("sam", "SamConfig"),
("seamless_m4t", "SeamlessM4TConfig"),
("seamless_m4t_v2", "SeamlessM4Tv2Config"),
("segformer", "SegformerConfig"),
("seggpt", "SegGptConfig"),
("sew", "SEWConfig"),
("sew-d", "SEWDConfig"),
("siglip", "SiglipConfig"),
("siglip_vision_model", "SiglipVisionConfig"),
("speech-encoder-decoder", "SpeechEncoderDecoderConfig"),
("speech_to_text", "Speech2TextConfig"),
("speech_to_text_2", "Speech2Text2Config"),
("speecht5", "SpeechT5Config"),
("splinter", "SplinterConfig"),
("squeezebert", "SqueezeBertConfig"),
("stablelm", "StableLmConfig"),
("starcoder2", "Starcoder2Config"),
("superpoint", "SuperPointConfig"),
("swiftformer", "SwiftFormerConfig"),
("swin", "SwinConfig"),
("swin2sr", "Swin2SRConfig"),
("swinv2", "Swinv2Config"),
("switch_transformers", "SwitchTransformersConfig"),
("t5", "T5Config"),
("table-transformer", "TableTransformerConfig"),
("tapas", "TapasConfig"),
("time_series_transformer", "TimeSeriesTransformerConfig"),
("timesformer", "TimesformerConfig"),
("timm_backbone", "TimmBackboneConfig"),
("trajectory_transformer", "TrajectoryTransformerConfig"),
("transfo-xl", "TransfoXLConfig"),
("trocr", "TrOCRConfig"),
("tvlt", "TvltConfig"),
("tvp", "TvpConfig"),
("udop", "UdopConfig"),
("umt5", "UMT5Config"),
("unispeech", "UniSpeechConfig"),
("unispeech-sat", "UniSpeechSatConfig"),
("univnet", "UnivNetConfig"),
("upernet", "UperNetConfig"),
("van", "VanConfig"),
("video_llava", "VideoLlavaConfig"),
("videomae", "VideoMAEConfig"),
("vilt", "ViltConfig"),
("vipllava", "VipLlavaConfig"),
("vision-encoder-decoder", "VisionEncoderDecoderConfig"),
("vision-text-dual-encoder", "VisionTextDualEncoderConfig"),
("visual_bert", "VisualBertConfig"),
("vit", "ViTConfig"),
("vit_hybrid", "ViTHybridConfig"),
("vit_mae", "ViTMAEConfig"),
("vit_msn", "ViTMSNConfig"),
("vitdet", "VitDetConfig"),
("vitmatte", "VitMatteConfig"),
("vits", "VitsConfig"),
("vivit", "VivitConfig"),
("wav2vec2", "Wav2Vec2Config"),
("wav2vec2-bert", "Wav2Vec2BertConfig"),
("wav2vec2-conformer", "Wav2Vec2ConformerConfig"),
("wavlm", "WavLMConfig"),
("whisper", "WhisperConfig"),
("xclip", "XCLIPConfig"),
("xglm", "XGLMConfig"),
("xlm", "XLMConfig"),
("xlm-prophetnet", "XLMProphetNetConfig"),
("xlm-roberta", "XLMRobertaConfig"),
("xlm-roberta-xl", "XLMRobertaXLConfig"),
("xlnet", "XLNetConfig"),
("xmod", "XmodConfig"),
("yolos", "YolosConfig"),
("yoso", "YosoConfig"),
("zoedepth", "ZoeDepthConfig"),
]
)
MODEL_NAMES_MAPPING = OrderedDict(
[
# Add full (and cased) model names here
("albert", "ALBERT"),
("align", "ALIGN"),
("altclip", "AltCLIP"),
("audio-spectrogram-transformer", "Audio Spectrogram Transformer"),
("autoformer", "Autoformer"),
("bark", "Bark"),
("bart", "BART"),
("barthez", "BARThez"),
("bartpho", "BARTpho"),
("beit", "BEiT"),
("bert", "BERT"),
("bert-generation", "Bert Generation"),
("bert-japanese", "BertJapanese"),
("bertweet", "BERTweet"),
("big_bird", "BigBird"),
("bigbird_pegasus", "BigBird-Pegasus"),
("biogpt", "BioGpt"),
("bit", "BiT"),
("blenderbot", "Blenderbot"),
("blenderbot-small", "BlenderbotSmall"),
("blip", "BLIP"),
("blip-2", "BLIP-2"),
("bloom", "BLOOM"),
("bort", "BORT"),
("bridgetower", "BridgeTower"),
("bros", "BROS"),
("byt5", "ByT5"),
("camembert", "CamemBERT"),
("canine", "CANINE"),
("chameleon", "Chameleon"),
("chinese_clip", "Chinese-CLIP"),
("chinese_clip_vision_model", "ChineseCLIPVisionModel"),
("clap", "CLAP"),
("clip", "CLIP"),
("clip_vision_model", "CLIPVisionModel"),
("clipseg", "CLIPSeg"),
("clvp", "CLVP"),
("code_llama", "CodeLlama"),
("codegen", "CodeGen"),
("cohere", "Cohere"),
("conditional_detr", "Conditional DETR"),
("convbert", "ConvBERT"),
("convnext", "ConvNeXT"),
("convnextv2", "ConvNeXTV2"),
("cpm", "CPM"),
("cpmant", "CPM-Ant"),
("ctrl", "CTRL"),
("cvt", "CvT"),
("dac", "DAC"),
("data2vec-audio", "Data2VecAudio"),
("data2vec-text", "Data2VecText"),
("data2vec-vision", "Data2VecVision"),
("dbrx", "DBRX"),
("deberta", "DeBERTa"),
("deberta-v2", "DeBERTa-v2"),
("decision_transformer", "Decision Transformer"),
("deformable_detr", "Deformable DETR"),
("deit", "DeiT"),
("deplot", "DePlot"),
("depth_anything", "Depth Anything"),
("depth_anything_v2", "Depth Anything V2"),
("deta", "DETA"),
("detr", "DETR"),
("dialogpt", "DialoGPT"),
("dinat", "DiNAT"),
("dinov2", "DINOv2"),
("distilbert", "DistilBERT"),
("dit", "DiT"),
("donut-swin", "DonutSwin"),
("dpr", "DPR"),
("dpt", "DPT"),
("efficientformer", "EfficientFormer"),
("efficientnet", "EfficientNet"),
("electra", "ELECTRA"),
("encodec", "EnCodec"),
("encoder-decoder", "Encoder decoder"),
("ernie", "ERNIE"),
("ernie_m", "ErnieM"),
("esm", "ESM"),
("falcon", "Falcon"),
("falcon_mamba", "FalconMamba"),
("fastspeech2_conformer", "FastSpeech2Conformer"),
("flan-t5", "FLAN-T5"),
("flan-ul2", "FLAN-UL2"),
("flaubert", "FlauBERT"),
("flava", "FLAVA"),
("fnet", "FNet"),
("focalnet", "FocalNet"),
("fsmt", "FairSeq Machine-Translation"),
("funnel", "Funnel Transformer"),
("fuyu", "Fuyu"),
("gemma", "Gemma"),
("gemma2", "Gemma2"),
("git", "GIT"),
("glpn", "GLPN"),
("gpt-sw3", "GPT-Sw3"),
("gpt2", "OpenAI GPT-2"),
("gpt_bigcode", "GPTBigCode"),
("gpt_neo", "GPT Neo"),
("gpt_neox", "GPT NeoX"),
("gpt_neox_japanese", "GPT NeoX Japanese"),
("gptj", "GPT-J"),
("gptsan-japanese", "GPTSAN-japanese"),
("granite", "Granite"),
("graphormer", "Graphormer"),
("grounding-dino", "Grounding DINO"),
("groupvit", "GroupViT"),
("herbert", "HerBERT"),
("hiera", "Hiera"),
("hubert", "Hubert"),
("ibert", "I-BERT"),
("idefics", "IDEFICS"),
("idefics2", "Idefics2"),
("imagegpt", "ImageGPT"),
("informer", "Informer"),
("instructblip", "InstructBLIP"),
("instructblipvideo", "InstructBlipVideo"),
("jamba", "Jamba"),
("jetmoe", "JetMoe"),
("jukebox", "Jukebox"),
("kosmos-2", "KOSMOS-2"),
("layoutlm", "LayoutLM"),
("layoutlmv2", "LayoutLMv2"),
("layoutlmv3", "LayoutLMv3"),
("layoutxlm", "LayoutXLM"),
("led", "LED"),
("levit", "LeViT"),
("lilt", "LiLT"),
("llama", "LLaMA"),
("llama2", "Llama2"),
("llama3", "Llama3"),
("llava", "LLaVa"),
("llava_next", "LLaVA-NeXT"),
("llava_next_video", "LLaVa-NeXT-Video"),
("longformer", "Longformer"),
("longt5", "LongT5"),
("luke", "LUKE"),
("lxmert", "LXMERT"),
("m2m_100", "M2M100"),
("madlad-400", "MADLAD-400"),
("mamba", "Mamba"),
("mamba2", "mamba2"),
("marian", "Marian"),
("markuplm", "MarkupLM"),
("mask2former", "Mask2Former"),
("maskformer", "MaskFormer"),
("maskformer-swin", "MaskFormerSwin"),
("matcha", "MatCha"),
("mbart", "mBART"),
("mbart50", "mBART-50"),
("mctct", "M-CTC-T"),
("mega", "MEGA"),
("megatron-bert", "Megatron-BERT"),
("megatron_gpt2", "Megatron-GPT2"),
("mgp-str", "MGP-STR"),
("mistral", "Mistral"),
("mixtral", "Mixtral"),
("mluke", "mLUKE"),
("mms", "MMS"),
("mobilebert", "MobileBERT"),
("mobilenet_v1", "MobileNetV1"),
("mobilenet_v2", "MobileNetV2"),
("mobilevit", "MobileViT"),
("mobilevitv2", "MobileViTV2"),
("mpnet", "MPNet"),
("mpt", "MPT"),
("mra", "MRA"),
("mt5", "MT5"),
("musicgen", "MusicGen"),
("musicgen_melody", "MusicGen Melody"),
("mvp", "MVP"),
("nat", "NAT"),
("nemotron", "Nemotron"),
("nezha", "Nezha"),
("nllb", "NLLB"),
("nllb-moe", "NLLB-MOE"),
("nougat", "Nougat"),
("nystromformer", "Nyströmformer"),
("olmo", "OLMo"),
("oneformer", "OneFormer"),
("open-llama", "OpenLlama"),
("openai-gpt", "OpenAI GPT"),
("opt", "OPT"),
("owlv2", "OWLv2"),
("owlvit", "OWL-ViT"),
("paligemma", "PaliGemma"),
("patchtsmixer", "PatchTSMixer"),
("patchtst", "PatchTST"),
("pegasus", "Pegasus"),
("pegasus_x", "PEGASUS-X"),
("perceiver", "Perceiver"),
("persimmon", "Persimmon"),
("phi", "Phi"),
("phi3", "Phi3"),
("phobert", "PhoBERT"),
("pix2struct", "Pix2Struct"),
("plbart", "PLBart"),
("poolformer", "PoolFormer"),
("pop2piano", "Pop2Piano"),
("prophetnet", "ProphetNet"),
("pvt", "PVT"),
("pvt_v2", "PVTv2"),
("qdqbert", "QDQBert"),
("qwen2", "Qwen2"),
("qwen2_audio", "Qwen2Audio"),
("qwen2_audio_encoder", "Qwen2AudioEncoder"),
("qwen2_moe", "Qwen2MoE"),
("qwen2_vl", "Qwen2VL"),
("rag", "RAG"),
("realm", "REALM"),
("recurrent_gemma", "RecurrentGemma"),
("reformer", "Reformer"),
("regnet", "RegNet"),
("rembert", "RemBERT"),
("resnet", "ResNet"),
("retribert", "RetriBERT"),
("roberta", "RoBERTa"),
("roberta-prelayernorm", "RoBERTa-PreLayerNorm"),
("roc_bert", "RoCBert"),
("roformer", "RoFormer"),
("rt_detr", "RT-DETR"),
("rt_detr_resnet", "RT-DETR-ResNet"),
("rwkv", "RWKV"),
("sam", "SAM"),
("seamless_m4t", "SeamlessM4T"),
("seamless_m4t_v2", "SeamlessM4Tv2"),
("segformer", "SegFormer"),
("seggpt", "SegGPT"),
("sew", "SEW"),
("sew-d", "SEW-D"),
("siglip", "SigLIP"),
("siglip_vision_model", "SiglipVisionModel"),
("speech-encoder-decoder", "Speech Encoder decoder"),
("speech_to_text", "Speech2Text"),
("speech_to_text_2", "Speech2Text2"),
("speecht5", "SpeechT5"),
("splinter", "Splinter"),
("squeezebert", "SqueezeBERT"),
("stablelm", "StableLm"),
("starcoder2", "Starcoder2"),
("superpoint", "SuperPoint"),
("swiftformer", "SwiftFormer"),
("swin", "Swin Transformer"),
("swin2sr", "Swin2SR"),
("swinv2", "Swin Transformer V2"),
("switch_transformers", "SwitchTransformers"),
("t5", "T5"),
("t5v1.1", "T5v1.1"),
("table-transformer", "Table Transformer"),
("tapas", "TAPAS"),
("tapex", "TAPEX"),
("time_series_transformer", "Time Series Transformer"),
("timesformer", "TimeSformer"),
("timm_backbone", "TimmBackbone"),
("trajectory_transformer", "Trajectory Transformer"),
("transfo-xl", "Transformer-XL"),
("trocr", "TrOCR"),
("tvlt", "TVLT"),
("tvp", "TVP"),
("udop", "UDOP"),
("ul2", "UL2"),
("umt5", "UMT5"),
("unispeech", "UniSpeech"),
("unispeech-sat", "UniSpeechSat"),
("univnet", "UnivNet"),
("upernet", "UPerNet"),
("van", "VAN"),
("video_llava", "VideoLlava"),
("videomae", "VideoMAE"),
("vilt", "ViLT"),
("vipllava", "VipLlava"),
("vision-encoder-decoder", "Vision Encoder decoder"),
("vision-text-dual-encoder", "VisionTextDualEncoder"),
("visual_bert", "VisualBERT"),
("vit", "ViT"),
("vit_hybrid", "ViT Hybrid"),
("vit_mae", "ViTMAE"),
("vit_msn", "ViTMSN"),
("vitdet", "VitDet"),
("vitmatte", "ViTMatte"),
("vits", "VITS"),
("vivit", "ViViT"),
("wav2vec2", "Wav2Vec2"),
("wav2vec2-bert", "Wav2Vec2-BERT"),
("wav2vec2-conformer", "Wav2Vec2-Conformer"),
("wav2vec2_phoneme", "Wav2Vec2Phoneme"),
("wavlm", "WavLM"),
("whisper", "Whisper"),
("xclip", "X-CLIP"),
("xglm", "XGLM"),
("xlm", "XLM"),
("xlm-prophetnet", "XLM-ProphetNet"),
("xlm-roberta", "XLM-RoBERTa"),
("xlm-roberta-xl", "XLM-RoBERTa-XL"),
("xlm-v", "XLM-V"),
("xlnet", "XLNet"),
("xls_r", "XLS-R"),
("xlsr_wav2vec2", "XLSR-Wav2Vec2"),
("xmod", "X-MOD"),
("yolos", "YOLOS"),
("yoso", "YOSO"),
("zoedepth", "ZoeDepth"),
]
)
# This is tied to the processing `-` -> `_` in `model_type_to_module_name`. For example, instead of putting
# `transfo-xl` (as in `CONFIG_MAPPING_NAMES`), we should use `transfo_xl`.
DEPRECATED_MODELS = [
"bort",
"deta",
"efficientformer",
"ernie_m",
"gptsan_japanese",
"graphormer",
"jukebox",
"mctct",
"mega",
"mmbt",
"nat",
"nezha",
"open_llama",
"qdqbert",
"realm",
"retribert",
"speech_to_text_2",
"tapex",
"trajectory_transformer",
"transfo_xl",
"tvlt",
"van",
"vit_hybrid",
"xlm_prophetnet",
]
SPECIAL_MODEL_TYPE_TO_MODULE_NAME = OrderedDict(
[
("openai-gpt", "openai"),
("data2vec-audio", "data2vec"),
("data2vec-text", "data2vec"),
("data2vec-vision", "data2vec"),
("donut-swin", "donut"),
("kosmos-2", "kosmos2"),
("maskformer-swin", "maskformer"),
("xclip", "x_clip"),
("clip_vision_model", "clip"),
("qwen2_audio_encoder", "qwen2_audio"),
("siglip_vision_model", "siglip"),
("chinese_clip_vision_model", "chinese_clip"),
("rt_detr_resnet", "rt_detr"),
]
)
def model_type_to_module_name(key):
"""Converts a config key to the corresponding module."""
# Special treatment
if key in SPECIAL_MODEL_TYPE_TO_MODULE_NAME:
key = SPECIAL_MODEL_TYPE_TO_MODULE_NAME[key]
if key in DEPRECATED_MODELS:
key = f"deprecated.{key}"
return key
key = key.replace("-", "_")
if key in DEPRECATED_MODELS:
key = f"deprecated.{key}"
return key
def config_class_to_model_type(config):
"""Converts a config class name to the corresponding model type"""
for key, cls in CONFIG_MAPPING_NAMES.items():
if cls == config:
return key
# if key not found check in extra content
for key, cls in CONFIG_MAPPING._extra_content.items():
if cls.__name__ == config:
return key
return None
class _LazyConfigMapping(OrderedDict):
"""
A dictionary that lazily load its values when they are requested.
"""
def __init__(self, mapping):
self._mapping = mapping
self._extra_content = {}
self._modules = {}
def __getitem__(self, key):
if key in self._extra_content:
return self._extra_content[key]
if key not in self._mapping:
raise KeyError(key)
value = self._mapping[key]
module_name = model_type_to_module_name(key)
if module_name not in self._modules:
self._modules[module_name] = importlib.import_module(f".{module_name}", "transformers.models")
if hasattr(self._modules[module_name], value):
return getattr(self._modules[module_name], value)
# Some of the mappings have entries model_type -> config of another model type. In that case we try to grab the
# object at the top level.
transformers_module = importlib.import_module("transformers")
return getattr(transformers_module, value)
def keys(self):
return list(self._mapping.keys()) + list(self._extra_content.keys())
def values(self):
return [self[k] for k in self._mapping.keys()] + list(self._extra_content.values())
def items(self):
return [(k, self[k]) for k in self._mapping.keys()] + list(self._extra_content.items())
def __iter__(self):
return iter(list(self._mapping.keys()) + list(self._extra_content.keys()))
def __contains__(self, item):
return item in self._mapping or item in self._extra_content
def register(self, key, value, exist_ok=False):
"""
Register a new configuration in this mapping.
"""
if key in self._mapping.keys() and not exist_ok:
raise ValueError(f"'{key}' is already used by a Transformers config, pick another name.")
self._extra_content[key] = value
CONFIG_MAPPING = _LazyConfigMapping(CONFIG_MAPPING_NAMES)
class _LazyLoadAllMappings(OrderedDict):
"""
A mapping that will load all pairs of key values at the first access (either by indexing, requestions keys, values,
etc.)
Args:
mapping: The mapping to load.
"""
def __init__(self, mapping):
self._mapping = mapping
self._initialized = False
self._data = {}
def _initialize(self):
if self._initialized:
return
for model_type, map_name in self._mapping.items():
module_name = model_type_to_module_name(model_type)
module = importlib.import_module(f".{module_name}", "transformers.models")
mapping = getattr(module, map_name)
self._data.update(mapping)
self._initialized = True
def __getitem__(self, key):
self._initialize()
return self._data[key]
def keys(self):
self._initialize()
return self._data.keys()
def values(self):
self._initialize()
return self._data.values()
def items(self):
self._initialize()
return self._data.keys()
def __iter__(self):
self._initialize()
return iter(self._data)
def __contains__(self, item):
self._initialize()
return item in self._data
def _get_class_name(model_class: Union[str, List[str]]):
if isinstance(model_class, (list, tuple)):
return " or ".join([f"[`{c}`]" for c in model_class if c is not None])
return f"[`{model_class}`]"
def _list_model_options(indent, config_to_class=None, use_model_types=True):
if config_to_class is None and not use_model_types:
raise ValueError("Using `use_model_types=False` requires a `config_to_class` dictionary.")
if use_model_types:
if config_to_class is None:
model_type_to_name = {model_type: f"[`{config}`]" for model_type, config in CONFIG_MAPPING_NAMES.items()}
else:
model_type_to_name = {
model_type: _get_class_name(model_class)
for model_type, model_class in config_to_class.items()
if model_type in MODEL_NAMES_MAPPING
}
lines = [
f"{indent}- **{model_type}** -- {model_type_to_name[model_type]} ({MODEL_NAMES_MAPPING[model_type]} model)"
for model_type in sorted(model_type_to_name.keys())
]
else:
config_to_name = {
CONFIG_MAPPING_NAMES[config]: _get_class_name(clas)
for config, clas in config_to_class.items()
if config in CONFIG_MAPPING_NAMES
}
config_to_model_name = {
config: MODEL_NAMES_MAPPING[model_type] for model_type, config in CONFIG_MAPPING_NAMES.items()
}
lines = [
f"{indent}- [`{config_name}`] configuration class:"
f" {config_to_name[config_name]} ({config_to_model_name[config_name]} model)"
for config_name in sorted(config_to_name.keys())
]
return "\n".join(lines)
def replace_list_option_in_docstrings(config_to_class=None, use_model_types=True):
def docstring_decorator(fn):
docstrings = fn.__doc__
if docstrings is None:
# Example: -OO
return fn
lines = docstrings.split("\n")
i = 0
while i < len(lines) and re.search(r"^(\s*)List options\s*$", lines[i]) is None:
i += 1
if i < len(lines):
indent = re.search(r"^(\s*)List options\s*$", lines[i]).groups()[0]
if use_model_types:
indent = f"{indent} "
lines[i] = _list_model_options(indent, config_to_class=config_to_class, use_model_types=use_model_types)
docstrings = "\n".join(lines)
else:
raise ValueError(
f"The function {fn} should have an empty 'List options' in its docstring as placeholder, current"
f" docstring is:\n{docstrings}"
)
fn.__doc__ = docstrings
return fn
return docstring_decorator
class AutoConfig:
r"""
This is a generic configuration class that will be instantiated as one of the configuration classes of the library
when created with the [`~AutoConfig.from_pretrained`] class method.
This class cannot be instantiated directly using `__init__()` (throws an error).
"""
def __init__(self):
raise EnvironmentError(
"AutoConfig is designed to be instantiated "
"using the `AutoConfig.from_pretrained(pretrained_model_name_or_path)` method."
)
@classmethod
def for_model(cls, model_type: str, *args, **kwargs):
if model_type in CONFIG_MAPPING:
config_class = CONFIG_MAPPING[model_type]
return config_class(*args, **kwargs)
raise ValueError(
f"Unrecognized model identifier: {model_type}. Should contain one of {', '.join(CONFIG_MAPPING.keys())}"
)
@classmethod
@replace_list_option_in_docstrings()
def from_pretrained(cls, pretrained_model_name_or_path, **kwargs):
r"""
Instantiate one of the configuration classes of the library from a pretrained model configuration.
The configuration class to instantiate is selected based on the `model_type` property of the config object that
is loaded, or when it's missing, by falling back to using pattern matching on `pretrained_model_name_or_path`:
List options
Args:
pretrained_model_name_or_path (`str` or `os.PathLike`):
Can be either:
- A string, the *model id* of a pretrained model configuration hosted inside a model repo on
huggingface.co.
- A path to a *directory* containing a configuration file saved using the
[`~PretrainedConfig.save_pretrained`] method, or the [`~PreTrainedModel.save_pretrained`] method,
e.g., `./my_model_directory/`.
- A path or url to a saved configuration JSON *file*, e.g.,
`./my_model_directory/configuration.json`.
cache_dir (`str` or `os.PathLike`, *optional*):
Path to a directory in which a downloaded pretrained model configuration should be cached if the
standard cache should not be used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force the (re-)download the model weights and configuration files and override the
cached versions if they exist.
resume_download:
Deprecated and ignored. All downloads are now resumed by default when possible.
Will be removed in v5 of Transformers.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, e.g., `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}`. The proxies are used on each request.
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a
git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any
identifier allowed by git.
return_unused_kwargs (`bool`, *optional*, defaults to `False`):
If `False`, then this function returns just the final configuration object.
If `True`, then this functions returns a `Tuple(config, unused_kwargs)` where *unused_kwargs* is a
dictionary consisting of the key/value pairs whose keys are not configuration attributes: i.e., the
part of `kwargs` which has not been used to update `config` and is otherwise ignored.
trust_remote_code (`bool`, *optional*, defaults to `False`):
Whether or not to allow for custom models defined on the Hub in their own modeling files. This option
should only be set to `True` for repositories you trust and in which you have read the code, as it will
execute code present on the Hub on your local machine.
kwargs(additional keyword arguments, *optional*):
The values in kwargs of any keys which are configuration attributes will be used to override the loaded
values. Behavior concerning key/value pairs whose keys are *not* configuration attributes is controlled
by the `return_unused_kwargs` keyword parameter.
Examples:
```python
>>> from transformers import AutoConfig
>>> # Download configuration from huggingface.co and cache.
>>> config = AutoConfig.from_pretrained("google-bert/bert-base-uncased")
>>> # Download configuration from huggingface.co (user-uploaded) and cache.
>>> config = AutoConfig.from_pretrained("dbmdz/bert-base-german-cased")
>>> # If configuration file is in a directory (e.g., was saved using *save_pretrained('./test/saved_model/')*).
>>> config = AutoConfig.from_pretrained("./test/bert_saved_model/")
>>> # Load a specific configuration file.
>>> config = AutoConfig.from_pretrained("./test/bert_saved_model/my_configuration.json")
>>> # Change some config attributes when loading a pretrained config.
>>> config = AutoConfig.from_pretrained("google-bert/bert-base-uncased", output_attentions=True, foo=False)
>>> config.output_attentions
True
>>> config, unused_kwargs = AutoConfig.from_pretrained(
... "google-bert/bert-base-uncased", output_attentions=True, foo=False, return_unused_kwargs=True
... )
>>> config.output_attentions
True
>>> unused_kwargs
{'foo': False}
```"""
use_auth_token = kwargs.pop("use_auth_token", None)
if use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v5 of Transformers. Please use `token` instead.",
FutureWarning,
)
if kwargs.get("token", None) is not None:
raise ValueError(
"`token` and `use_auth_token` are both specified. Please set only the argument `token`."
)
kwargs["token"] = use_auth_token
kwargs["_from_auto"] = True
kwargs["name_or_path"] = pretrained_model_name_or_path
trust_remote_code = kwargs.pop("trust_remote_code", None)
code_revision = kwargs.pop("code_revision", None)
config_dict, unused_kwargs = PretrainedConfig.get_config_dict(pretrained_model_name_or_path, **kwargs)
has_remote_code = "auto_map" in config_dict and "AutoConfig" in config_dict["auto_map"]
has_local_code = "model_type" in config_dict and config_dict["model_type"] in CONFIG_MAPPING
trust_remote_code = resolve_trust_remote_code(
trust_remote_code, pretrained_model_name_or_path, has_local_code, has_remote_code
)
if has_remote_code and trust_remote_code:
class_ref = config_dict["auto_map"]["AutoConfig"]
config_class = get_class_from_dynamic_module(
class_ref, pretrained_model_name_or_path, code_revision=code_revision, **kwargs
)
if os.path.isdir(pretrained_model_name_or_path):
config_class.register_for_auto_class()
return config_class.from_pretrained(pretrained_model_name_or_path, **kwargs)
elif "model_type" in config_dict:
try:
config_class = CONFIG_MAPPING[config_dict["model_type"]]
except KeyError:
raise ValueError(
f"The checkpoint you are trying to load has model type `{config_dict['model_type']}` "
"but Transformers does not recognize this architecture. This could be because of an "
"issue with the checkpoint, or because your version of Transformers is out of date."
)
return config_class.from_dict(config_dict, **unused_kwargs)
else:
# Fallback: use pattern matching on the string.
# We go from longer names to shorter names to catch roberta before bert (for instance)
for pattern in sorted(CONFIG_MAPPING.keys(), key=len, reverse=True):
if pattern in str(pretrained_model_name_or_path):
return CONFIG_MAPPING[pattern].from_dict(config_dict, **unused_kwargs)
raise ValueError(
f"Unrecognized model in {pretrained_model_name_or_path}. "
f"Should have a `model_type` key in its {CONFIG_NAME}, or contain one of the following strings "
f"in its name: {', '.join(CONFIG_MAPPING.keys())}"
)
@staticmethod
def register(model_type, config, exist_ok=False):
"""
Register a new configuration for this class.
Args:
model_type (`str`): The model type like "bert" or "gpt".
config ([`PretrainedConfig`]): The config to register.
"""
if issubclass(config, PretrainedConfig) and config.model_type != model_type:
raise ValueError(
"The config you are passing has a `model_type` attribute that is not consistent with the model type "
f"you passed (config has {config.model_type} and you passed {model_type}. Fix one of those so they "
"match!"
)
CONFIG_MAPPING.register(model_type, config, exist_ok=exist_ok)
|
transformers/src/transformers/models/auto/configuration_auto.py/0
|
{
"file_path": "transformers/src/transformers/models/auto/configuration_auto.py",
"repo_id": "transformers",
"token_count": 18903
}
| 336
|
# coding=utf-8
# Copyright 2023 The Suno AI Authors and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Processor class for Bark
"""
import json
import os
from typing import Optional
import numpy as np
from ...feature_extraction_utils import BatchFeature
from ...processing_utils import ProcessorMixin
from ...utils import logging
from ...utils.hub import get_file_from_repo
from ..auto import AutoTokenizer
logger = logging.get_logger(__name__)
class BarkProcessor(ProcessorMixin):
r"""
Constructs a Bark processor which wraps a text tokenizer and optional Bark voice presets into a single processor.
Args:
tokenizer ([`PreTrainedTokenizer`]):
An instance of [`PreTrainedTokenizer`].
speaker_embeddings (`Dict[Dict[str]]`, *optional*):
Optional nested speaker embeddings dictionary. The first level contains voice preset names (e.g
`"en_speaker_4"`). The second level contains `"semantic_prompt"`, `"coarse_prompt"` and `"fine_prompt"`
embeddings. The values correspond to the path of the corresponding `np.ndarray`. See
[here](https://suno-ai.notion.site/8b8e8749ed514b0cbf3f699013548683?v=bc67cff786b04b50b3ceb756fd05f68c) for
a list of `voice_preset_names`.
"""
tokenizer_class = "AutoTokenizer"
attributes = ["tokenizer"]
preset_shape = {
"semantic_prompt": 1,
"coarse_prompt": 2,
"fine_prompt": 2,
}
def __init__(self, tokenizer, speaker_embeddings=None):
super().__init__(tokenizer)
self.speaker_embeddings = speaker_embeddings
@classmethod
def from_pretrained(
cls, pretrained_processor_name_or_path, speaker_embeddings_dict_path="speaker_embeddings_path.json", **kwargs
):
r"""
Instantiate a Bark processor associated with a pretrained model.
Args:
pretrained_model_name_or_path (`str` or `os.PathLike`):
This can be either:
- a string, the *model id* of a pretrained [`BarkProcessor`] hosted inside a model repo on
huggingface.co.
- a path to a *directory* containing a processor saved using the [`~BarkProcessor.save_pretrained`]
method, e.g., `./my_model_directory/`.
speaker_embeddings_dict_path (`str`, *optional*, defaults to `"speaker_embeddings_path.json"`):
The name of the `.json` file containing the speaker_embeddings dictionnary located in
`pretrained_model_name_or_path`. If `None`, no speaker_embeddings is loaded.
**kwargs
Additional keyword arguments passed along to both
[`~tokenization_utils_base.PreTrainedTokenizer.from_pretrained`].
"""
if speaker_embeddings_dict_path is not None:
speaker_embeddings_path = get_file_from_repo(
pretrained_processor_name_or_path,
speaker_embeddings_dict_path,
subfolder=kwargs.pop("subfolder", None),
cache_dir=kwargs.pop("cache_dir", None),
force_download=kwargs.pop("force_download", False),
proxies=kwargs.pop("proxies", None),
resume_download=kwargs.pop("resume_download", None),
local_files_only=kwargs.pop("local_files_only", False),
token=kwargs.pop("use_auth_token", None),
revision=kwargs.pop("revision", None),
)
if speaker_embeddings_path is None:
logger.warning(
f"""`{os.path.join(pretrained_processor_name_or_path,speaker_embeddings_dict_path)}` does not exists
, no preloaded speaker embeddings will be used - Make sure to provide a correct path to the json
dictionnary if wanted, otherwise set `speaker_embeddings_dict_path=None`."""
)
speaker_embeddings = None
else:
with open(speaker_embeddings_path) as speaker_embeddings_json:
speaker_embeddings = json.load(speaker_embeddings_json)
else:
speaker_embeddings = None
tokenizer = AutoTokenizer.from_pretrained(pretrained_processor_name_or_path, **kwargs)
return cls(tokenizer=tokenizer, speaker_embeddings=speaker_embeddings)
def save_pretrained(
self,
save_directory,
speaker_embeddings_dict_path="speaker_embeddings_path.json",
speaker_embeddings_directory="speaker_embeddings",
push_to_hub: bool = False,
**kwargs,
):
"""
Saves the attributes of this processor (tokenizer...) in the specified directory so that it can be reloaded
using the [`~BarkProcessor.from_pretrained`] method.
Args:
save_directory (`str` or `os.PathLike`):
Directory where the tokenizer files and the speaker embeddings will be saved (directory will be created
if it does not exist).
speaker_embeddings_dict_path (`str`, *optional*, defaults to `"speaker_embeddings_path.json"`):
The name of the `.json` file that will contains the speaker_embeddings nested path dictionnary, if it
exists, and that will be located in `pretrained_model_name_or_path/speaker_embeddings_directory`.
speaker_embeddings_directory (`str`, *optional*, defaults to `"speaker_embeddings/"`):
The name of the folder in which the speaker_embeddings arrays will be saved.
push_to_hub (`bool`, *optional*, defaults to `False`):
Whether or not to push your model to the Hugging Face model hub after saving it. You can specify the
repository you want to push to with `repo_id` (will default to the name of `save_directory` in your
namespace).
kwargs:
Additional key word arguments passed along to the [`~utils.PushToHubMixin.push_to_hub`] method.
"""
if self.speaker_embeddings is not None:
os.makedirs(os.path.join(save_directory, speaker_embeddings_directory, "v2"), exist_ok=True)
embeddings_dict = {}
embeddings_dict["repo_or_path"] = save_directory
for prompt_key in self.speaker_embeddings:
if prompt_key != "repo_or_path":
voice_preset = self._load_voice_preset(prompt_key)
tmp_dict = {}
for key in self.speaker_embeddings[prompt_key]:
np.save(
os.path.join(
embeddings_dict["repo_or_path"], speaker_embeddings_directory, f"{prompt_key}_{key}"
),
voice_preset[key],
allow_pickle=False,
)
tmp_dict[key] = os.path.join(speaker_embeddings_directory, f"{prompt_key}_{key}.npy")
embeddings_dict[prompt_key] = tmp_dict
with open(os.path.join(save_directory, speaker_embeddings_dict_path), "w") as fp:
json.dump(embeddings_dict, fp)
super().save_pretrained(save_directory, push_to_hub, **kwargs)
def _load_voice_preset(self, voice_preset: str = None, **kwargs):
voice_preset_paths = self.speaker_embeddings[voice_preset]
voice_preset_dict = {}
for key in ["semantic_prompt", "coarse_prompt", "fine_prompt"]:
if key not in voice_preset_paths:
raise ValueError(
f"Voice preset unrecognized, missing {key} as a key in self.speaker_embeddings[{voice_preset}]."
)
path = get_file_from_repo(
self.speaker_embeddings.get("repo_or_path", "/"),
voice_preset_paths[key],
subfolder=kwargs.pop("subfolder", None),
cache_dir=kwargs.pop("cache_dir", None),
force_download=kwargs.pop("force_download", False),
proxies=kwargs.pop("proxies", None),
resume_download=kwargs.pop("resume_download", None),
local_files_only=kwargs.pop("local_files_only", False),
token=kwargs.pop("use_auth_token", None),
revision=kwargs.pop("revision", None),
)
if path is None:
raise ValueError(
f"""`{os.path.join(self.speaker_embeddings.get("repo_or_path", "/"),voice_preset_paths[key])}` does not exists
, no preloaded voice preset will be used - Make sure to provide correct paths to the {voice_preset}
embeddings."""
)
voice_preset_dict[key] = np.load(path)
return voice_preset_dict
def _validate_voice_preset_dict(self, voice_preset: Optional[dict] = None):
for key in ["semantic_prompt", "coarse_prompt", "fine_prompt"]:
if key not in voice_preset:
raise ValueError(f"Voice preset unrecognized, missing {key} as a key.")
if not isinstance(voice_preset[key], np.ndarray):
raise TypeError(f"{key} voice preset must be a {str(self.preset_shape[key])}D ndarray.")
if len(voice_preset[key].shape) != self.preset_shape[key]:
raise ValueError(f"{key} voice preset must be a {str(self.preset_shape[key])}D ndarray.")
def __call__(
self,
text=None,
voice_preset=None,
return_tensors="pt",
max_length=256,
add_special_tokens=False,
return_attention_mask=True,
return_token_type_ids=False,
**kwargs,
):
"""
Main method to prepare for the model one or several sequences(s). This method forwards the `text` and `kwargs`
arguments to the AutoTokenizer's [`~AutoTokenizer.__call__`] to encode the text. The method also proposes a
voice preset which is a dictionary of arrays that conditions `Bark`'s output. `kwargs` arguments are forwarded
to the tokenizer and to `cached_file` method if `voice_preset` is a valid filename.
Args:
text (`str`, `List[str]`, `List[List[str]]`):
The sequence or batch of sequences to be encoded. Each sequence can be a string or a list of strings
(pretokenized string). If the sequences are provided as list of strings (pretokenized), you must set
`is_split_into_words=True` (to lift the ambiguity with a batch of sequences).
voice_preset (`str`, `Dict[np.ndarray]`):
The voice preset, i.e the speaker embeddings. It can either be a valid voice_preset name, e.g
`"en_speaker_1"`, or directly a dictionnary of `np.ndarray` embeddings for each submodel of `Bark`. Or
it can be a valid file name of a local `.npz` single voice preset.
return_tensors (`str` or [`~utils.TensorType`], *optional*):
If set, will return tensors of a particular framework. Acceptable values are:
- `'pt'`: Return PyTorch `torch.Tensor` objects.
- `'np'`: Return NumPy `np.ndarray` objects.
Returns:
Tuple([`BatchEncoding`], [`BatchFeature`]): A tuple composed of a [`BatchEncoding`], i.e the output of the
`tokenizer` and a [`BatchFeature`], i.e the voice preset with the right tensors type.
"""
if voice_preset is not None and not isinstance(voice_preset, dict):
if (
isinstance(voice_preset, str)
and self.speaker_embeddings is not None
and voice_preset in self.speaker_embeddings
):
voice_preset = self._load_voice_preset(voice_preset)
else:
if isinstance(voice_preset, str) and not voice_preset.endswith(".npz"):
voice_preset = voice_preset + ".npz"
voice_preset = np.load(voice_preset)
if voice_preset is not None:
self._validate_voice_preset_dict(voice_preset, **kwargs)
voice_preset = BatchFeature(data=voice_preset, tensor_type=return_tensors)
encoded_text = self.tokenizer(
text,
return_tensors=return_tensors,
padding="max_length",
max_length=max_length,
return_attention_mask=return_attention_mask,
return_token_type_ids=return_token_type_ids,
add_special_tokens=add_special_tokens,
**kwargs,
)
if voice_preset is not None:
encoded_text["history_prompt"] = voice_preset
return encoded_text
|
transformers/src/transformers/models/bark/processing_bark.py/0
|
{
"file_path": "transformers/src/transformers/models/bark/processing_bark.py",
"repo_id": "transformers",
"token_count": 6009
}
| 337
|
# coding=utf-8
# Copyright 2021 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert BEiT checkpoints from the unilm repository."""
import argparse
import json
from pathlib import Path
import requests
import torch
from datasets import load_dataset
from huggingface_hub import hf_hub_download
from PIL import Image
from transformers import (
BeitConfig,
BeitForImageClassification,
BeitForMaskedImageModeling,
BeitForSemanticSegmentation,
BeitImageProcessor,
)
from transformers.image_utils import PILImageResampling
from transformers.utils import logging
logging.set_verbosity_info()
logger = logging.get_logger(__name__)
# here we list all keys to be renamed (original name on the left, our name on the right)
def create_rename_keys(config, has_lm_head=False, is_semantic=False):
prefix = "backbone." if is_semantic else ""
rename_keys = []
for i in range(config.num_hidden_layers):
# encoder layers: output projection, 2 feedforward neural networks and 2 layernorms
rename_keys.append((f"{prefix}blocks.{i}.norm1.weight", f"beit.encoder.layer.{i}.layernorm_before.weight"))
rename_keys.append((f"{prefix}blocks.{i}.norm1.bias", f"beit.encoder.layer.{i}.layernorm_before.bias"))
rename_keys.append(
(f"{prefix}blocks.{i}.attn.proj.weight", f"beit.encoder.layer.{i}.attention.output.dense.weight")
)
rename_keys.append(
(f"{prefix}blocks.{i}.attn.proj.bias", f"beit.encoder.layer.{i}.attention.output.dense.bias")
)
rename_keys.append((f"{prefix}blocks.{i}.norm2.weight", f"beit.encoder.layer.{i}.layernorm_after.weight"))
rename_keys.append((f"{prefix}blocks.{i}.norm2.bias", f"beit.encoder.layer.{i}.layernorm_after.bias"))
rename_keys.append((f"{prefix}blocks.{i}.mlp.fc1.weight", f"beit.encoder.layer.{i}.intermediate.dense.weight"))
rename_keys.append((f"{prefix}blocks.{i}.mlp.fc1.bias", f"beit.encoder.layer.{i}.intermediate.dense.bias"))
rename_keys.append((f"{prefix}blocks.{i}.mlp.fc2.weight", f"beit.encoder.layer.{i}.output.dense.weight"))
rename_keys.append((f"{prefix}blocks.{i}.mlp.fc2.bias", f"beit.encoder.layer.{i}.output.dense.bias"))
# projection layer + position embeddings
rename_keys.extend(
[
(f"{prefix}cls_token", "beit.embeddings.cls_token"),
(f"{prefix}patch_embed.proj.weight", "beit.embeddings.patch_embeddings.projection.weight"),
(f"{prefix}patch_embed.proj.bias", "beit.embeddings.patch_embeddings.projection.bias"),
]
)
if has_lm_head:
# mask token + shared relative position bias + layernorm
rename_keys.extend(
[
("mask_token", "beit.embeddings.mask_token"),
(
"rel_pos_bias.relative_position_bias_table",
"beit.encoder.relative_position_bias.relative_position_bias_table",
),
(
"rel_pos_bias.relative_position_index",
"beit.encoder.relative_position_bias.relative_position_index",
),
("norm.weight", "layernorm.weight"),
("norm.bias", "layernorm.bias"),
]
)
elif is_semantic:
# semantic segmentation classification heads
rename_keys.extend(
[
("decode_head.conv_seg.weight", "decode_head.classifier.weight"),
("decode_head.conv_seg.bias", "decode_head.classifier.bias"),
("auxiliary_head.conv_seg.weight", "auxiliary_head.classifier.weight"),
("auxiliary_head.conv_seg.bias", "auxiliary_head.classifier.bias"),
]
)
else:
# layernorm + classification head
rename_keys.extend(
[
("fc_norm.weight", "beit.pooler.layernorm.weight"),
("fc_norm.bias", "beit.pooler.layernorm.bias"),
("head.weight", "classifier.weight"),
("head.bias", "classifier.bias"),
]
)
return rename_keys
# we split up the matrix of each encoder layer into queries, keys and values
def read_in_q_k_v(state_dict, config, has_lm_head=False, is_semantic=False):
for i in range(config.num_hidden_layers):
prefix = "backbone." if is_semantic else ""
# queries, keys and values
in_proj_weight = state_dict.pop(f"{prefix}blocks.{i}.attn.qkv.weight")
q_bias = state_dict.pop(f"{prefix}blocks.{i}.attn.q_bias")
v_bias = state_dict.pop(f"{prefix}blocks.{i}.attn.v_bias")
state_dict[f"beit.encoder.layer.{i}.attention.attention.query.weight"] = in_proj_weight[
: config.hidden_size, :
]
state_dict[f"beit.encoder.layer.{i}.attention.attention.query.bias"] = q_bias
state_dict[f"beit.encoder.layer.{i}.attention.attention.key.weight"] = in_proj_weight[
config.hidden_size : config.hidden_size * 2, :
]
state_dict[f"beit.encoder.layer.{i}.attention.attention.value.weight"] = in_proj_weight[
-config.hidden_size :, :
]
state_dict[f"beit.encoder.layer.{i}.attention.attention.value.bias"] = v_bias
# gamma_1 and gamma_2
# we call them lambda because otherwise they are renamed when using .from_pretrained
gamma_1 = state_dict.pop(f"{prefix}blocks.{i}.gamma_1")
gamma_2 = state_dict.pop(f"{prefix}blocks.{i}.gamma_2")
state_dict[f"beit.encoder.layer.{i}.lambda_1"] = gamma_1
state_dict[f"beit.encoder.layer.{i}.lambda_2"] = gamma_2
# relative_position bias table + index
if not has_lm_head:
# each layer has its own relative position bias
table = state_dict.pop(f"{prefix}blocks.{i}.attn.relative_position_bias_table")
index = state_dict.pop(f"{prefix}blocks.{i}.attn.relative_position_index")
state_dict[
f"beit.encoder.layer.{i}.attention.attention.relative_position_bias.relative_position_bias_table"
] = table
state_dict[
f"beit.encoder.layer.{i}.attention.attention.relative_position_bias.relative_position_index"
] = index
def rename_key(dct, old, new):
val = dct.pop(old)
dct[new] = val
# We will verify our results on an image of cute cats
def prepare_img():
url = "http://images.cocodataset.org/val2017/000000039769.jpg"
im = Image.open(requests.get(url, stream=True).raw)
return im
@torch.no_grad()
def convert_beit_checkpoint(checkpoint_url, pytorch_dump_folder_path):
"""
Copy/paste/tweak model's weights to our BEiT structure.
"""
# define default BEiT configuration
config = BeitConfig()
has_lm_head = False
is_semantic = False
repo_id = "huggingface/label-files"
# set config parameters based on URL
if checkpoint_url[-9:-4] == "pt22k":
# masked image modeling
config.use_shared_relative_position_bias = True
config.use_mask_token = True
has_lm_head = True
elif checkpoint_url[-9:-4] == "ft22k":
# intermediate fine-tuning on ImageNet-22k
config.use_relative_position_bias = True
config.num_labels = 21841
filename = "imagenet-22k-id2label.json"
id2label = json.load(open(hf_hub_download(repo_id, filename, repo_type="dataset"), "r"))
id2label = {int(k): v for k, v in id2label.items()}
# this dataset contains 21843 labels but the model only has 21841
# we delete the classes as mentioned in https://github.com/google-research/big_transfer/issues/18
del id2label[9205]
del id2label[15027]
config.id2label = id2label
config.label2id = {v: k for k, v in id2label.items()}
elif checkpoint_url[-8:-4] == "to1k":
# fine-tuning on ImageNet-1k
config.use_relative_position_bias = True
config.num_labels = 1000
filename = "imagenet-1k-id2label.json"
id2label = json.load(open(hf_hub_download(repo_id, filename, repo_type="dataset"), "r"))
id2label = {int(k): v for k, v in id2label.items()}
config.id2label = id2label
config.label2id = {v: k for k, v in id2label.items()}
if "384" in checkpoint_url:
config.image_size = 384
if "512" in checkpoint_url:
config.image_size = 512
elif "ade20k" in checkpoint_url:
# fine-tuning
config.use_relative_position_bias = True
config.num_labels = 150
filename = "ade20k-id2label.json"
id2label = json.load(open(hf_hub_download(repo_id, filename, repo_type="dataset"), "r"))
id2label = {int(k): v for k, v in id2label.items()}
config.id2label = id2label
config.label2id = {v: k for k, v in id2label.items()}
config.image_size = 640
is_semantic = True
else:
raise ValueError("Checkpoint not supported, URL should either end with 'pt22k', 'ft22k', 'to1k' or 'ade20k'")
# size of the architecture
if "base" in checkpoint_url:
pass
elif "large" in checkpoint_url:
config.hidden_size = 1024
config.intermediate_size = 4096
config.num_hidden_layers = 24
config.num_attention_heads = 16
if "ade20k" in checkpoint_url:
config.image_size = 640
config.out_indices = [7, 11, 15, 23]
else:
raise ValueError("Should either find 'base' or 'large' in checkpoint URL")
# load state_dict of original model, remove and rename some keys
state_dict = torch.hub.load_state_dict_from_url(checkpoint_url, map_location="cpu", check_hash=True)
state_dict = state_dict["model"] if "ade20k" not in checkpoint_url else state_dict["state_dict"]
rename_keys = create_rename_keys(config, has_lm_head=has_lm_head, is_semantic=is_semantic)
for src, dest in rename_keys:
rename_key(state_dict, src, dest)
read_in_q_k_v(state_dict, config, has_lm_head=has_lm_head, is_semantic=is_semantic)
if is_semantic:
# add prefix to decoder keys
for key, val in state_dict.copy().items():
val = state_dict.pop(key)
if key.startswith("backbone.fpn"):
key = key.replace("backbone.fpn", "fpn")
state_dict[key] = val
# load HuggingFace model
if checkpoint_url[-9:-4] == "pt22k":
model = BeitForMaskedImageModeling(config)
elif "ade20k" in checkpoint_url:
model = BeitForSemanticSegmentation(config)
else:
model = BeitForImageClassification(config)
model.eval()
model.load_state_dict(state_dict)
# Check outputs on an image
if is_semantic:
image_processor = BeitImageProcessor(size=config.image_size, do_center_crop=False)
ds = load_dataset("hf-internal-testing/fixtures_ade20k", split="test", trust_remote_code=True)
image = Image.open(ds[0]["file"])
else:
image_processor = BeitImageProcessor(
size=config.image_size, resample=PILImageResampling.BILINEAR, do_center_crop=False
)
image = prepare_img()
encoding = image_processor(images=image, return_tensors="pt")
pixel_values = encoding["pixel_values"]
outputs = model(pixel_values)
logits = outputs.logits
# verify logits
expected_shape = torch.Size([1, 1000])
if checkpoint_url[:-4].endswith("beit_base_patch16_224_pt22k"):
expected_shape = torch.Size([1, 196, 8192])
elif checkpoint_url[:-4].endswith("beit_large_patch16_224_pt22k"):
expected_shape = torch.Size([1, 196, 8192])
elif checkpoint_url[:-4].endswith("beit_base_patch16_224_pt22k_ft22k"):
expected_shape = torch.Size([1, 21841])
expected_logits = torch.tensor([2.2288, 2.4671, 0.7395])
expected_class_idx = 2397
elif checkpoint_url[:-4].endswith("beit_large_patch16_224_pt22k_ft22k"):
expected_shape = torch.Size([1, 21841])
expected_logits = torch.tensor([1.6881, -0.2787, 0.5901])
expected_class_idx = 2396
elif checkpoint_url[:-4].endswith("beit_base_patch16_224_pt22k_ft1k"):
expected_logits = torch.tensor([0.1241, 0.0798, -0.6569])
expected_class_idx = 285
elif checkpoint_url[:-4].endswith("beit_base_patch16_224_pt22k_ft22kto1k"):
expected_logits = torch.tensor([-1.2385, -1.0987, -1.0108])
expected_class_idx = 281
elif checkpoint_url[:-4].endswith("beit_base_patch16_384_pt22k_ft22kto1k"):
expected_logits = torch.tensor([-1.5303, -0.9484, -0.3147])
expected_class_idx = 761
elif checkpoint_url[:-4].endswith("beit_large_patch16_224_pt22k_ft1k"):
expected_logits = torch.tensor([0.4610, -0.0928, 0.2086])
expected_class_idx = 761
elif checkpoint_url[:-4].endswith("beit_large_patch16_224_pt22k_ft22kto1k"):
expected_logits = torch.tensor([-0.4804, 0.6257, -0.1837])
expected_class_idx = 761
elif checkpoint_url[:-4].endswith("beit_large_patch16_384_pt22k_ft22kto1k"):
expected_logits = torch.tensor([[-0.5122, 0.5117, -0.2113]])
expected_class_idx = 761
elif checkpoint_url[:-4].endswith("beit_large_patch16_512_pt22k_ft22kto1k"):
expected_logits = torch.tensor([-0.3062, 0.7261, 0.4852])
expected_class_idx = 761
elif checkpoint_url[:-4].endswith("beit_base_patch16_640_pt22k_ft22ktoade20k"):
expected_shape = (1, 150, 160, 160)
expected_logits = torch.tensor(
[
[[-4.9225, -2.3954, -3.0522], [-2.8822, -1.0046, -1.7561], [-2.9549, -1.3228, -2.1347]],
[[-5.8168, -3.4129, -4.0778], [-3.8651, -2.2214, -3.0277], [-3.8356, -2.4643, -3.3535]],
[[-0.0078, 3.9952, 4.0754], [2.9856, 4.6944, 5.0035], [3.2413, 4.7813, 4.9969]],
]
)
elif checkpoint_url[:-4].endswith("beit_large_patch16_640_pt22k_ft22ktoade20k"):
expected_shape = (1, 150, 160, 160)
expected_logits = torch.tensor(
[
[[-4.3305, -2.3049, -3.0161], [-2.9591, -1.5305, -2.2251], [-3.4198, -1.8004, -2.9062]],
[[-5.8922, -3.7435, -4.3978], [-4.2063, -2.7872, -3.4755], [-4.2791, -3.1874, -4.1681]],
[[0.9895, 4.3467, 4.7663], [4.2476, 5.6830, 6.1518], [4.5550, 6.2495, 6.5154]],
]
)
else:
raise ValueError("Can't verify logits as model is not supported")
if logits.shape != expected_shape:
raise ValueError(f"Shape of logits not as expected. {logits.shape=}, {expected_shape=}")
if not has_lm_head:
if is_semantic:
if not torch.allclose(logits[0, :3, :3, :3], expected_logits, atol=1e-3):
raise ValueError("First elements of logits not as expected")
else:
print("Predicted class idx:", logits.argmax(-1).item())
if not torch.allclose(logits[0, :3], expected_logits, atol=1e-3):
raise ValueError("First elements of logits not as expected")
if logits.argmax(-1).item() != expected_class_idx:
raise ValueError("Predicted class index not as expected")
Path(pytorch_dump_folder_path).mkdir(exist_ok=True)
print(f"Saving model to {pytorch_dump_folder_path}")
model.save_pretrained(pytorch_dump_folder_path)
print(f"Saving image processor to {pytorch_dump_folder_path}")
image_processor.save_pretrained(pytorch_dump_folder_path)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--checkpoint_url",
default="https://conversationhub.blob.core.windows.net/beit-share-public/beit/beit_base_patch16_224_pt22k_ft22kto1k.pth",
type=str,
help="URL to the original PyTorch checkpoint (.pth file).",
)
parser.add_argument(
"--pytorch_dump_folder_path", default=None, type=str, help="Path to the folder to output PyTorch model."
)
args = parser.parse_args()
convert_beit_checkpoint(args.checkpoint_url, args.pytorch_dump_folder_path)
|
transformers/src/transformers/models/beit/convert_beit_unilm_to_pytorch.py/0
|
{
"file_path": "transformers/src/transformers/models/beit/convert_beit_unilm_to_pytorch.py",
"repo_id": "transformers",
"token_count": 7541
}
| 338
|
import os
from typing import List, Union
import tensorflow as tf
from tensorflow_text import BertTokenizer as BertTokenizerLayer
from tensorflow_text import FastBertTokenizer, ShrinkLongestTrimmer, case_fold_utf8, combine_segments, pad_model_inputs
from ...modeling_tf_utils import keras
from .tokenization_bert import BertTokenizer
class TFBertTokenizer(keras.layers.Layer):
"""
This is an in-graph tokenizer for BERT. It should be initialized similarly to other tokenizers, using the
`from_pretrained()` method. It can also be initialized with the `from_tokenizer()` method, which imports settings
from an existing standard tokenizer object.
In-graph tokenizers, unlike other Hugging Face tokenizers, are actually Keras layers and are designed to be run
when the model is called, rather than during preprocessing. As a result, they have somewhat more limited options
than standard tokenizer classes. They are most useful when you want to create an end-to-end model that goes
straight from `tf.string` inputs to outputs.
Args:
vocab_list (`list`):
List containing the vocabulary.
do_lower_case (`bool`, *optional*, defaults to `True`):
Whether or not to lowercase the input when tokenizing.
cls_token_id (`str`, *optional*, defaults to `"[CLS]"`):
The classifier token which is used when doing sequence classification (classification of the whole sequence
instead of per-token classification). It is the first token of the sequence when built with special tokens.
sep_token_id (`str`, *optional*, defaults to `"[SEP]"`):
The separator token, which is used when building a sequence from multiple sequences, e.g. two sequences for
sequence classification or for a text and a question for question answering. It is also used as the last
token of a sequence built with special tokens.
pad_token_id (`str`, *optional*, defaults to `"[PAD]"`):
The token used for padding, for example when batching sequences of different lengths.
padding (`str`, defaults to `"longest"`):
The type of padding to use. Can be either `"longest"`, to pad only up to the longest sample in the batch,
or `"max_length", to pad all inputs to the maximum length supported by the tokenizer.
truncation (`bool`, *optional*, defaults to `True`):
Whether to truncate the sequence to the maximum length.
max_length (`int`, *optional*, defaults to `512`):
The maximum length of the sequence, used for padding (if `padding` is "max_length") and/or truncation (if
`truncation` is `True`).
pad_to_multiple_of (`int`, *optional*, defaults to `None`):
If set, the sequence will be padded to a multiple of this value.
return_token_type_ids (`bool`, *optional*, defaults to `True`):
Whether to return token_type_ids.
return_attention_mask (`bool`, *optional*, defaults to `True`):
Whether to return the attention_mask.
use_fast_bert_tokenizer (`bool`, *optional*, defaults to `True`):
If True, will use the FastBertTokenizer class from Tensorflow Text. If False, will use the BertTokenizer
class instead. BertTokenizer supports some additional options, but is slower and cannot be exported to
TFLite.
"""
def __init__(
self,
vocab_list: List,
do_lower_case: bool,
cls_token_id: int = None,
sep_token_id: int = None,
pad_token_id: int = None,
padding: str = "longest",
truncation: bool = True,
max_length: int = 512,
pad_to_multiple_of: int = None,
return_token_type_ids: bool = True,
return_attention_mask: bool = True,
use_fast_bert_tokenizer: bool = True,
**tokenizer_kwargs,
):
super().__init__()
if use_fast_bert_tokenizer:
self.tf_tokenizer = FastBertTokenizer(
vocab_list, token_out_type=tf.int64, lower_case_nfd_strip_accents=do_lower_case, **tokenizer_kwargs
)
else:
lookup_table = tf.lookup.StaticVocabularyTable(
tf.lookup.KeyValueTensorInitializer(
keys=vocab_list,
key_dtype=tf.string,
values=tf.range(tf.size(vocab_list, out_type=tf.int64), dtype=tf.int64),
value_dtype=tf.int64,
),
num_oov_buckets=1,
)
self.tf_tokenizer = BertTokenizerLayer(
lookup_table, token_out_type=tf.int64, lower_case=do_lower_case, **tokenizer_kwargs
)
self.vocab_list = vocab_list
self.do_lower_case = do_lower_case
self.cls_token_id = vocab_list.index("[CLS]") if cls_token_id is None else cls_token_id
self.sep_token_id = vocab_list.index("[SEP]") if sep_token_id is None else sep_token_id
self.pad_token_id = vocab_list.index("[PAD]") if pad_token_id is None else pad_token_id
self.paired_trimmer = ShrinkLongestTrimmer(max_length - 3, axis=1) # Allow room for special tokens
self.max_length = max_length
self.padding = padding
self.truncation = truncation
self.pad_to_multiple_of = pad_to_multiple_of
self.return_token_type_ids = return_token_type_ids
self.return_attention_mask = return_attention_mask
@classmethod
def from_tokenizer(cls, tokenizer: "PreTrainedTokenizerBase", **kwargs): # noqa: F821
"""
Initialize a `TFBertTokenizer` from an existing `Tokenizer`.
Args:
tokenizer (`PreTrainedTokenizerBase`):
The tokenizer to use to initialize the `TFBertTokenizer`.
Examples:
```python
from transformers import AutoTokenizer, TFBertTokenizer
tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-uncased")
tf_tokenizer = TFBertTokenizer.from_tokenizer(tokenizer)
```
"""
do_lower_case = kwargs.pop("do_lower_case", None)
do_lower_case = tokenizer.do_lower_case if do_lower_case is None else do_lower_case
cls_token_id = kwargs.pop("cls_token_id", None)
cls_token_id = tokenizer.cls_token_id if cls_token_id is None else cls_token_id
sep_token_id = kwargs.pop("sep_token_id", None)
sep_token_id = tokenizer.sep_token_id if sep_token_id is None else sep_token_id
pad_token_id = kwargs.pop("pad_token_id", None)
pad_token_id = tokenizer.pad_token_id if pad_token_id is None else pad_token_id
vocab = tokenizer.get_vocab()
vocab = sorted(vocab.items(), key=lambda x: x[1])
vocab_list = [entry[0] for entry in vocab]
return cls(
vocab_list=vocab_list,
do_lower_case=do_lower_case,
cls_token_id=cls_token_id,
sep_token_id=sep_token_id,
pad_token_id=pad_token_id,
**kwargs,
)
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], *init_inputs, **kwargs):
"""
Instantiate a `TFBertTokenizer` from a pre-trained tokenizer.
Args:
pretrained_model_name_or_path (`str` or `os.PathLike`):
The name or path to the pre-trained tokenizer.
Examples:
```python
from transformers import TFBertTokenizer
tf_tokenizer = TFBertTokenizer.from_pretrained("google-bert/bert-base-uncased")
```
"""
try:
tokenizer = BertTokenizer.from_pretrained(pretrained_model_name_or_path, *init_inputs, **kwargs)
except: # noqa: E722
from .tokenization_bert_fast import BertTokenizerFast
tokenizer = BertTokenizerFast.from_pretrained(pretrained_model_name_or_path, *init_inputs, **kwargs)
return cls.from_tokenizer(tokenizer, **kwargs)
def unpaired_tokenize(self, texts):
if self.do_lower_case:
texts = case_fold_utf8(texts)
tokens = self.tf_tokenizer.tokenize(texts)
return tokens.merge_dims(1, -1)
def call(
self,
text,
text_pair=None,
padding=None,
truncation=None,
max_length=None,
pad_to_multiple_of=None,
return_token_type_ids=None,
return_attention_mask=None,
):
if padding is None:
padding = self.padding
if padding not in ("longest", "max_length"):
raise ValueError("Padding must be either 'longest' or 'max_length'!")
if max_length is not None and text_pair is not None:
# Because we have to instantiate a Trimmer to do it properly
raise ValueError("max_length cannot be overridden at call time when truncating paired texts!")
if max_length is None:
max_length = self.max_length
if truncation is None:
truncation = self.truncation
if pad_to_multiple_of is None:
pad_to_multiple_of = self.pad_to_multiple_of
if return_token_type_ids is None:
return_token_type_ids = self.return_token_type_ids
if return_attention_mask is None:
return_attention_mask = self.return_attention_mask
if not isinstance(text, tf.Tensor):
text = tf.convert_to_tensor(text)
if text_pair is not None and not isinstance(text_pair, tf.Tensor):
text_pair = tf.convert_to_tensor(text_pair)
if text_pair is not None:
if text.shape.rank > 1:
raise ValueError("text argument should not be multidimensional when a text pair is supplied!")
if text_pair.shape.rank > 1:
raise ValueError("text_pair should not be multidimensional!")
if text.shape.rank == 2:
text, text_pair = text[:, 0], text[:, 1]
text = self.unpaired_tokenize(text)
if text_pair is None: # Unpaired text
if truncation:
text = text[:, : max_length - 2] # Allow room for special tokens
input_ids, token_type_ids = combine_segments(
(text,), start_of_sequence_id=self.cls_token_id, end_of_segment_id=self.sep_token_id
)
else: # Paired text
text_pair = self.unpaired_tokenize(text_pair)
if truncation:
text, text_pair = self.paired_trimmer.trim([text, text_pair])
input_ids, token_type_ids = combine_segments(
(text, text_pair), start_of_sequence_id=self.cls_token_id, end_of_segment_id=self.sep_token_id
)
if padding == "longest":
pad_length = input_ids.bounding_shape(axis=1)
if pad_to_multiple_of is not None:
# No ceiling division in tensorflow, so we negate floordiv instead
pad_length = pad_to_multiple_of * (-tf.math.floordiv(-pad_length, pad_to_multiple_of))
else:
pad_length = max_length
input_ids, attention_mask = pad_model_inputs(input_ids, max_seq_length=pad_length, pad_value=self.pad_token_id)
output = {"input_ids": input_ids}
if return_attention_mask:
output["attention_mask"] = attention_mask
if return_token_type_ids:
token_type_ids, _ = pad_model_inputs(
token_type_ids, max_seq_length=pad_length, pad_value=self.pad_token_id
)
output["token_type_ids"] = token_type_ids
return output
def get_config(self):
return {
"vocab_list": self.vocab_list,
"do_lower_case": self.do_lower_case,
"cls_token_id": self.cls_token_id,
"sep_token_id": self.sep_token_id,
"pad_token_id": self.pad_token_id,
}
|
transformers/src/transformers/models/bert/tokenization_bert_tf.py/0
|
{
"file_path": "transformers/src/transformers/models/bert/tokenization_bert_tf.py",
"repo_id": "transformers",
"token_count": 5234
}
| 339
|
# coding=utf-8
# Copyright 2020 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert Blenderbot checkpoint."""
import argparse
import torch
from transformers import BlenderbotConfig, BlenderbotForConditionalGeneration
from transformers.utils import logging
logging.set_verbosity_info()
logger = logging.get_logger(__name__)
PATTERNS = [
["attention", "attn"],
["encoder_attention", "encoder_attn"],
["q_lin", "q_proj"],
["k_lin", "k_proj"],
["v_lin", "v_proj"],
["out_lin", "out_proj"],
["norm_embeddings", "layernorm_embedding"],
["position_embeddings", "embed_positions"],
["embeddings", "embed_tokens"],
["ffn.lin", "fc"],
]
def rename_state_dict_key(k):
if k == "embeddings.weight":
return "shared.weight"
for parlai_name, hf_name in PATTERNS:
k = k.replace(parlai_name, hf_name)
if k.startswith("encoder"):
k = k.replace(".attn", ".self_attn")
k = k.replace("norm1", "self_attn_layer_norm")
k = k.replace("norm2", "final_layer_norm")
elif k.startswith("decoder"):
k = k.replace("norm1", "self_attn_layer_norm")
k = k.replace("norm2", "encoder_attn_layer_norm")
k = k.replace("norm3", "final_layer_norm")
return k
def rename_layernorm_keys(sd):
keys = [
"model.encoder.layernorm_embedding.weight",
"model.encoder.layernorm_embedding.bias",
"model.decoder.layernorm_embedding.weight",
"model.decoder.layernorm_embedding.bias",
]
for k in keys:
v = sd.pop(k)
new_k = k.replace("layernorm_embedding", "layer_norm")
assert new_k not in sd
sd[new_k] = v
IGNORE_KEYS = ["START"]
@torch.no_grad()
def convert_parlai_checkpoint(checkpoint_path, pytorch_dump_folder_path, config_json_path):
"""
Copy/paste/tweak model's weights to our BERT structure.
"""
model = torch.load(checkpoint_path, map_location="cpu")
sd = model["model"]
cfg = BlenderbotConfig.from_json_file(config_json_path)
m = BlenderbotForConditionalGeneration(cfg)
valid_keys = m.model.state_dict().keys()
failures = []
mapping = {}
for k, v in sd.items():
if k in IGNORE_KEYS:
continue
new_k = rename_state_dict_key(k)
if new_k not in valid_keys:
failures.append([k, new_k])
else:
mapping[new_k] = v
if cfg.normalize_before: # Blenderbot-3B checkpoints. Rename layernorm_embedding -> layer_norm
rename_layernorm_keys(sd)
m.model.load_state_dict(mapping, strict=True)
m.half()
m.save_pretrained(pytorch_dump_folder_path)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument("--src_path", type=str, help="like blenderbot-model.bin")
parser.add_argument("--save_dir", default="hf_blenderbot", type=str, help="Where to save converted model.")
parser.add_argument(
"--hf_config_json", default="blenderbot-3b-config.json", type=str, help="Path to config to use"
)
args = parser.parse_args()
convert_parlai_checkpoint(args.src_path, args.save_dir, args.hf_config_json)
|
transformers/src/transformers/models/blenderbot/convert_blenderbot_original_pytorch_checkpoint_to_pytorch.py/0
|
{
"file_path": "transformers/src/transformers/models/blenderbot/convert_blenderbot_original_pytorch_checkpoint_to_pytorch.py",
"repo_id": "transformers",
"token_count": 1504
}
| 340
|
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tokenization classes for Bloom."""
import pickle
from typing import Optional, Tuple
from ...tokenization_utils_base import BatchEncoding
from ...tokenization_utils_fast import PreTrainedTokenizerFast
from ...utils import logging
logger = logging.get_logger(__name__)
VOCAB_FILES_NAMES = {"tokenizer_file": "tokenizer.json"}
class BloomTokenizerFast(PreTrainedTokenizerFast):
"""
Construct a "fast" Bloom tokenizer (backed by HuggingFace's *tokenizers* library). Based on byte-level
Byte-Pair-Encoding.
This tokenizer has been trained to treat spaces like parts of the tokens (a bit like sentencepiece) so a word will
be encoded differently whether it is at the beginning of the sentence (without space) or not:
```python
>>> from transformers import BloomTokenizerFast
>>> tokenizer = BloomTokenizerFast.from_pretrained("bigscience/bloom")
>>> tokenizer("Hello world")["input_ids"]
[59414, 8876]
>>> tokenizer(" Hello world")["input_ids"]
[86153, 8876]
```
You can get around that behavior by passing `add_prefix_space=True` when instantiating this tokenizer, but since
the model was not pretrained this way, it might yield a decrease in performance.
<Tip>
When used with `is_split_into_words=True`, this tokenizer needs to be instantiated with `add_prefix_space=True`.
</Tip>
This tokenizer inherits from [`PreTrainedTokenizerFast`] which contains most of the main methods. Users should
refer to this superclass for more information regarding those methods.
Args:
vocab_file (`str`):
Path to the vocabulary file.
merges_file (`str`):
Path to the merges file.
errors (`str`, *optional*, defaults to `"replace"`):
Paradigm to follow when decoding bytes to UTF-8. See
[bytes.decode](https://docs.python.org/3/library/stdtypes.html#bytes.decode) for more information.
unk_token (`str`, *optional*, defaults to `<|endoftext|>`):
The unknown token. A token that is not in the vocabulary cannot be converted to an ID and is set to be this
token instead.
bos_token (`str`, *optional*, defaults to `<|endoftext|>`):
The beginning of sequence token.
eos_token (`str`, *optional*, defaults to `<|endoftext|>`):
The end of sequence token.
add_prefix_space (`bool`, *optional*, defaults to `False`):
Whether or not to add an initial space to the input. This allows to treat the leading word just as any
other word. (Bloom tokenizer detect beginning of words by the preceding space).
trim_offsets (`bool`, *optional*, defaults to `True`):
Whether or not the post-processing step should trim offsets to avoid including whitespaces.
"""
vocab_files_names = VOCAB_FILES_NAMES
model_input_names = ["input_ids", "attention_mask"]
slow_tokenizer_class = None
# No `max_model_input_sizes` as BLOOM uses ALiBi positional embeddings
def __init__(
self,
vocab_file=None,
merges_file=None,
tokenizer_file=None,
unk_token="<unk>",
bos_token="<s>",
eos_token="</s>",
pad_token="<pad>",
add_prefix_space=False,
clean_up_tokenization_spaces=False,
**kwargs,
):
super().__init__(
vocab_file,
merges_file,
tokenizer_file=tokenizer_file,
unk_token=unk_token,
bos_token=bos_token,
eos_token=eos_token,
pad_token=pad_token,
add_prefix_space=add_prefix_space,
clean_up_tokenization_spaces=clean_up_tokenization_spaces,
**kwargs,
)
# TODO @ArthurZucker this can only work one way for now, to update later-on. Tests should also properly
# check this as they were green before.
pre_tok_state = pickle.dumps(self.backend_tokenizer.pre_tokenizer)
decoder_state = pickle.dumps(self.backend_tokenizer.decoder)
if add_prefix_space:
pre_tok_state = pre_tok_state.replace(b'"add_prefix_space":false', b'"add_prefix_space": true')
decoder_state = decoder_state.replace(b'"add_prefix_space":false', b'"add_prefix_space": true')
self.backend_tokenizer.pre_tokenizer = pickle.loads(pre_tok_state)
self.backend_tokenizer.decoder = pickle.loads(decoder_state)
self.add_prefix_space = add_prefix_space
def _batch_encode_plus(self, *args, **kwargs) -> BatchEncoding:
is_split_into_words = kwargs.get("is_split_into_words", False)
if not (self.add_prefix_space or not is_split_into_words):
raise Exception(
f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True to use it with"
" pretokenized inputs."
)
return super()._batch_encode_plus(*args, **kwargs)
def _encode_plus(self, *args, **kwargs) -> BatchEncoding:
is_split_into_words = kwargs.get("is_split_into_words", False)
if not (self.add_prefix_space or not is_split_into_words):
raise Exception(
f"You need to instantiate {self.__class__.__name__} with add_prefix_space=True to use it with"
" pretokenized inputs."
)
return super()._encode_plus(*args, **kwargs)
def save_vocabulary(self, save_directory: str, filename_prefix: Optional[str] = None) -> Tuple[str]:
files = self._tokenizer.model.save(save_directory, name=filename_prefix)
return tuple(files)
|
transformers/src/transformers/models/bloom/tokenization_bloom_fast.py/0
|
{
"file_path": "transformers/src/transformers/models/bloom/tokenization_bloom_fast.py",
"repo_id": "transformers",
"token_count": 2401
}
| 341
|
# coding=utf-8
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch CLVP model."""
import copy
import math
from dataclasses import dataclass
from typing import Dict, Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import nn
from torch.nn import CrossEntropyLoss
from ...activations import ACT2FN
from ...generation import GenerationConfig
from ...modeling_attn_mask_utils import _prepare_4d_attention_mask, _prepare_4d_causal_attention_mask
from ...modeling_outputs import (
BaseModelOutput,
BaseModelOutputWithPastAndCrossAttentions,
BaseModelOutputWithPooling,
CausalLMOutputWithCrossAttentions,
)
from ...modeling_utils import PreTrainedModel, SequenceSummary
from ...pytorch_utils import Conv1D, isin_mps_friendly
from ...utils import (
ModelOutput,
add_start_docstrings,
add_start_docstrings_to_model_forward,
logging,
replace_return_docstrings,
)
from .configuration_clvp import (
ClvpConfig,
ClvpDecoderConfig,
ClvpEncoderConfig,
)
logger = logging.get_logger(__name__)
_CHECKPOINT_FOR_DOC = "susnato/clvp_dev"
# Copied from transformers.models.clip.modeling_clip.contrastive_loss
def contrastive_loss(logits: torch.Tensor) -> torch.Tensor:
return nn.functional.cross_entropy(logits, torch.arange(len(logits), device=logits.device))
# Copied from transformers.models.clip.modeling_clip.clip_loss with clip->clvp, image_loss->speech_loss
def clvp_loss(similarity: torch.Tensor) -> torch.Tensor:
caption_loss = contrastive_loss(similarity)
speech_loss = contrastive_loss(similarity.t())
return (caption_loss + speech_loss) / 2.0
# Copied from transformers.models.llama.modeling_llama.rotate_half
def rotate_half(x):
"""Rotates half the hidden dims of the input."""
x1 = x[..., : x.shape[-1] // 2]
x2 = x[..., x.shape[-1] // 2 :]
return torch.cat((-x2, x1), dim=-1)
def apply_rotary_pos_emb(q, k, v, cos, sin, position_ids, unsqueeze_dim=1):
"""Applies Rotary Position Embedding to the query and key tensors.
Args:
q (`torch.Tensor`): The query tensor.
k (`torch.Tensor`): The key tensor.
cos (`torch.Tensor`): The cosine part of the rotary embedding.
sin (`torch.Tensor`): The sine part of the rotary embedding.
position_ids (`torch.Tensor`):
The position indices of the tokens corresponding to the query and key tensors. For example, this can be
used to pass offsetted position ids when working with a KV-cache.
unsqueeze_dim (`int`, *optional*, defaults to 1):
The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
Returns:
`tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
"""
cos = cos[position_ids].unsqueeze(unsqueeze_dim)
sin = sin[position_ids].unsqueeze(unsqueeze_dim)
q_embed = (q * cos) + (rotate_half(q) * sin)
k_embed = (k * cos) + (rotate_half(k) * sin)
v_embed = (v * cos) + (rotate_half(v) * sin)
return q_embed, k_embed, v_embed
def _pad_extra_bos_eos_tokens(
input_ids,
attention_mask=None,
pad_token_id=0,
bos_token_id=255,
eos_token_id=0,
add_bos_token=True,
add_eos_token=True,
):
"""
This method adds extra bos and eos tokens to input_ids and accordingly modifies the attention_mask which is used in
`ClvpConditioningEncoder` and the generation loop of the `ClvpModelForConditionalGeneration`.
"""
# add the bos token at the beginning
if add_bos_token:
input_ids = torch.nn.functional.pad(input_ids, (1, 0), value=bos_token_id)
attention_mask = (
torch.nn.functional.pad(attention_mask, (1, 0), value=1) if attention_mask is not None else attention_mask
)
modified_input_ids = input_ids
if add_eos_token:
modified_input_ids = torch.zeros(
(input_ids.shape[0], input_ids.shape[1] + 1), dtype=input_ids.dtype, device=input_ids.device
)
for i, each_input_id in enumerate(input_ids):
# locate where the valid tokens end and then add the eos token
if isin_mps_friendly(each_input_id, pad_token_id).sum():
pos = torch.where(each_input_id == pad_token_id)[0].min()
modified_input_ids[i] = torch.concatenate(
[each_input_id[:pos], torch.tensor([eos_token_id], device=input_ids.device), each_input_id[pos:]]
)
else:
# if there are no pad tokens present, then add eos to the end
modified_input_ids[i] = torch.nn.functional.pad(each_input_id, (0, 1), value=eos_token_id)
attention_mask = (
torch.nn.functional.pad(attention_mask, (1, 0), value=1) if attention_mask is not None else attention_mask
)
return modified_input_ids, attention_mask
@dataclass
class ClvpEncoderOutput(ModelOutput):
"""
Base class for CLVP encoder's outputs that contains a pooling of the last hidden states as well as a projection
output (a linear layer on top of the pooled output).
Args:
embeds (`torch.FloatTensor` of shape `(batch_size, output_dim)`, *optional*, returned when model is initialized with `with_projection=True`):
The embeddings obtained by applying the projection layer to the pooler_output.
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
The hidden state of the last layer of the model.
pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Pooled output of the `last_hidden_state`.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of
the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
embeds: Optional[torch.FloatTensor] = None
last_hidden_state: torch.FloatTensor = None
pooler_output: Optional[torch.FloatTensor] = None
hidden_states: Optional[Tuple[torch.FloatTensor]] = None
attentions: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class ClvpOutput(ModelOutput):
"""
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`):
Contrastive loss for speech-text similarity.
speech_ids (`torch.LongTensor`, *optional*):
speech_ids (or speech candidates) generated by the `ClvpForCausalLM` model.
logits_per_speech (`torch.FloatTensor` of shape `(speech_batch_size, text_batch_size)`):
The scaled dot product scores between `speech_embeds` and `text_embeds`. This represents the speech-text
similarity scores.
logits_per_text (`torch.FloatTensor` of shape `(text_batch_size, speech_batch_size)`):
The scaled dot product scores between `text_embeds` and `speech_embeds`. This represents the text-speech
similarity scores.
text_embeds (`torch.FloatTensor` of shape `(batch_size, output_dim`):
The text embeddings obtained by applying the projection layer to the pooled output of the text encoder
model.
speech_embeds (`torch.FloatTensor` of shape `(batch_size, output_dim`):
The speech embeddings obtained by applying the projection layer to the pooled output of the speech encoder
model.
text_model_output (`BaseModelOutputWithPooling`):
The pooled output of the `last_hidden_state` of the text encoder Model.
speech_model_output (`BaseModelOutputWithPooling`):
The pooled output of the `last_hidden_state` of the speech encoder Model.
decoder_hidden_states (`torch.FloatTensor`, *optional*):
The hidden states of the decoder model.
text_encoder_hidden_states (`torch.FloatTensor`, *optional*):
The hidden states of the text encoder model.
speech_encoder_hidden_states (`torch.FloatTensor`, *optional*):
The hidden states of the speech encoder model.
"""
loss: Optional[torch.FloatTensor] = None
speech_ids: Optional[torch.LongTensor] = None
logits_per_speech: torch.FloatTensor = None
logits_per_text: torch.FloatTensor = None
text_embeds: torch.FloatTensor = None
speech_embeds: torch.FloatTensor = None
text_model_output: BaseModelOutputWithPooling = None
speech_model_output: BaseModelOutputWithPooling = None
decoder_hidden_states: torch.FloatTensor = None
text_encoder_hidden_states: torch.FloatTensor = None
speech_encoder_hidden_states: torch.FloatTensor = None
# Copied from transformers.models.llama.modeling_llama.LlamaRMSNorm with Llama->Clvp
class ClvpRMSNorm(nn.Module):
def __init__(self, hidden_size, eps=1e-6):
"""
ClvpRMSNorm is equivalent to T5LayerNorm
"""
super().__init__()
self.weight = nn.Parameter(torch.ones(hidden_size))
self.variance_epsilon = eps
def forward(self, hidden_states):
input_dtype = hidden_states.dtype
hidden_states = hidden_states.to(torch.float32)
variance = hidden_states.pow(2).mean(-1, keepdim=True)
hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon)
return self.weight * hidden_states.to(input_dtype)
def extra_repr(self):
return f"{tuple(self.weight.shape)}, eps={self.variance_epsilon}"
class ClvpRotaryPositionalEmbedding(nn.Module):
"""
Rotary Position Embedding Class for CLVP. It was proposed in the paper 'ROFORMER: ENHANCED TRANSFORMER WITH ROTARY
POSITION EMBEDDING', Please see https://arxiv.org/pdf/2104.09864v1.pdf .
"""
def __init__(self, config):
super().__init__()
dim = max(config.projection_dim // (config.num_attention_heads * 2), 32)
inv_freq = 1.0 / (10000 ** (torch.arange(0, dim, 2, dtype=torch.int64).float() / dim))
self.register_buffer("inv_freq", inv_freq)
self.cached_sequence_length = None
self.cached_rotary_positional_embedding = None
def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
sequence_length = hidden_states.shape[1]
if sequence_length == self.cached_sequence_length and self.cached_rotary_positional_embedding is not None:
return self.cached_rotary_positional_embedding
self.cached_sequence_length = sequence_length
time_stamps = torch.arange(sequence_length, device=hidden_states.device).type_as(self.inv_freq)
freqs = torch.einsum("i,j->ij", time_stamps, self.inv_freq)
embeddings = torch.cat((freqs, freqs), dim=-1)
self.cached_rotary_positional_embedding = embeddings.unsqueeze(0)
return self.cached_rotary_positional_embedding
class ClvpSelfAttention(nn.Module):
"""
Multi-headed attention to combine Absolute and Rotary Positional Embeddings into a single Attention module.
"""
def __init__(self, config):
super().__init__()
self.config = config
self.embed_dim = config.hidden_size
self.num_heads = config.num_attention_heads
self.head_dim = self.embed_dim // self.num_heads
if self.head_dim * self.num_heads != self.embed_dim:
raise ValueError(
f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim} and `num_heads`:"
f" {self.num_heads})."
)
self.scale = self.head_dim**-0.5
self.dropout = config.attention_dropout
if hasattr(config, "max_position_embeddings"):
max_positions = config.max_position_embeddings
bias = torch.tril(torch.ones((max_positions, max_positions), dtype=torch.bool))
bias = bias.view(1, 1, max_positions, max_positions)
self.register_buffer("bias", bias, persistent=False)
self.k_proj = nn.Linear(self.embed_dim, self.embed_dim, bias=config.use_attention_bias)
self.v_proj = nn.Linear(self.embed_dim, self.embed_dim, bias=config.use_attention_bias)
self.q_proj = nn.Linear(self.embed_dim, self.embed_dim, bias=config.use_attention_bias)
self.out_proj = nn.Linear(self.embed_dim, self.embed_dim)
# Copied from transformers.models.clip.modeling_clip.CLIPAttention._shape
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
def forward(
self,
hidden_states: torch.FloatTensor,
rotary_pos_emb: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
use_cache: Optional[bool] = False,
head_mask: Optional[torch.FloatTensor] = None,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.FloatTensor, Optional[torch.FloatTensor], Optional[Tuple[torch.FloatTensor]]]:
# Raise error when position_ids is None but rotary_pos_emb is provided, because we need that when applying
# rotary_pos_emb to query and key states.
if rotary_pos_emb is not None and position_ids is None:
raise ValueError("`position_ids` must be provided when `rotary_pos_emb` is not None.")
bsz, _, embed_dim = hidden_states.size()
# get query proj
query_states = self._shape(self.q_proj(hidden_states), -1, bsz) * self.scale
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
if past_key_value is not None:
past_key, past_value = past_key_value
key_states = torch.cat((past_key, key_states), dim=-2)
value_states = torch.cat((past_value, value_states), dim=-2)
if use_cache is True:
present = (key_states, value_states)
else:
present = None
if rotary_pos_emb is not None:
rotary_emb_dim = rotary_pos_emb.shape[-1]
# Partial rotary embedding
query_rot, query_pass = (
query_states[..., :rotary_emb_dim],
query_states[..., rotary_emb_dim:],
)
key_rot, key_pass = (
key_states[..., :rotary_emb_dim],
key_states[..., rotary_emb_dim:],
)
value_rot, value_pass = (
value_states[..., :rotary_emb_dim],
value_states[..., rotary_emb_dim:],
)
cos, sin = rotary_pos_emb.cos().squeeze(0), rotary_pos_emb.sin().squeeze(0)
query_rot, key_rot, value_rot = apply_rotary_pos_emb(query_rot, key_rot, value_rot, cos, sin, position_ids)
# [batch_size, num_heads, seq_length, head_dim]
query_states = torch.cat((query_rot, query_pass), dim=-1)
key_states = torch.cat((key_rot, key_pass), dim=-1)
value_states = torch.cat((value_rot, value_pass), dim=-1)
tgt_len = query_states.shape[2]
src_len = key_states.shape[2]
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3))
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, tgt_len, src_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}"
)
attn_weights = attn_weights + attention_mask
attn_weights = nn.functional.softmax(attn_weights, dim=-1)
# Mask heads if we want to
if head_mask is not None:
attn_weights = attn_weights * head_mask
attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training)
attn_output = torch.matmul(attn_probs, value_states)
if attn_output.size() != (bsz, self.num_heads, tgt_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.transpose(1, 2).contiguous()
attn_output = attn_output.reshape(bsz, tgt_len, self.embed_dim)
attn_output = self.out_proj(attn_output)
if not output_attentions:
attn_weights = None
return attn_output, present, attn_weights
class ClvpGatedLinearUnit(nn.Module):
"""
`ClvpGatedLinearUnit` uses the second half of the `hidden_states` to act as a gate for the first half of the
`hidden_states` which controls the flow of data from the first of the tensor.
"""
def __init__(self, config):
super().__init__()
self.activation_fn = ACT2FN[config.hidden_act]
self.proj = nn.Linear(config.hidden_size, config.intermediate_size * 2)
def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
hidden_states, gate = self.proj(hidden_states).chunk(2, dim=-1)
return hidden_states * self.activation_fn(gate)
class ClvpEncoderMLP(nn.Module):
"""
This MLP is used in CLVP speech or text encoder models.
"""
def __init__(self, config):
super().__init__()
self.config = config
self.fc1 = ClvpGatedLinearUnit(config)
self.fc2 = nn.Linear(config.intermediate_size, config.hidden_size)
self.dropout_layer = nn.Dropout(config.dropout)
def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
hidden_states = self.fc1(hidden_states)
hidden_states = self.dropout_layer(hidden_states)
hidden_states = self.fc2(hidden_states)
return hidden_states
class ClvpEncoderLayer(nn.Module):
def __init__(self, config: ClvpConfig):
super().__init__()
self.config = config
self.embed_dim = config.hidden_size
self.self_attn = ClvpSelfAttention(config)
self.mlp = ClvpEncoderMLP(config)
self.input_rmsnorm = ClvpRMSNorm(self.embed_dim, eps=config.layer_norm_eps)
self.post_attention_rmsnorm = ClvpRMSNorm(self.embed_dim, eps=config.layer_norm_eps)
def forward(
self,
hidden_states: torch.FloatTensor,
rotary_pos_emb: torch.FloatTensor,
attention_mask: torch.LongTensor,
position_ids: torch.LongTensor,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.FloatTensor]:
"""
Args:
hidden_states (`torch.FloatTensor` of shape `(batch, seq_len, embed_dim)`):
input to the layer.
rotary_pos_emb (`torch.FloatTensor`):
rotary position embeddings generated by `ClvpRotaryPositionalEmbedding` module.
attention_mask (`torch.FloatTensor` of shape `(batch, 1, tgt_len, src_len)`):
attention mask where padding elements are indicated by very large negative values.
position_ids (`torch.LongTensor`):
Denotes position ids of the input tokens.
output_attentions (`bool`, *optional*, defaults to `False`):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
"""
residual = hidden_states
hidden_states = self.input_rmsnorm(hidden_states)
attention_outputs = self.self_attn(
hidden_states=hidden_states,
rotary_pos_emb=rotary_pos_emb,
attention_mask=attention_mask,
position_ids=position_ids,
output_attentions=output_attentions,
)
hidden_states = attention_outputs[0]
hidden_states = residual + hidden_states
residual = hidden_states
hidden_states = self.post_attention_rmsnorm(hidden_states)
hidden_states = self.mlp(hidden_states)
hidden_states = residual + hidden_states
outputs = (hidden_states,)
if output_attentions:
outputs += (attention_outputs[-1],)
return outputs
# Copied from transformers.models.gpt2.modeling_gpt2.GPT2MLP with GPT2->ClvpDecoderMLP
class ClvpDecoderMLP(nn.Module):
def __init__(self, intermediate_size, config):
super().__init__()
embed_dim = config.hidden_size
self.c_fc = Conv1D(intermediate_size, embed_dim)
self.c_proj = Conv1D(embed_dim, intermediate_size)
self.act = ACT2FN[config.activation_function]
self.dropout = nn.Dropout(config.resid_pdrop)
def forward(self, hidden_states: Optional[Tuple[torch.FloatTensor]]) -> torch.FloatTensor:
hidden_states = self.c_fc(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.c_proj(hidden_states)
hidden_states = self.dropout(hidden_states)
return hidden_states
class ClvpDecoderLayer(nn.Module):
def __init__(self, config):
super().__init__()
hidden_size = config.hidden_size
inner_dim = config.n_inner if config.n_inner is not None else 4 * hidden_size
self.input_layernorm = nn.LayerNorm(hidden_size, eps=config.layer_norm_epsilon)
self.attn = ClvpSelfAttention(config)
self.post_attention_layernorm = nn.LayerNorm(hidden_size, eps=config.layer_norm_epsilon)
self.mlp = ClvpDecoderMLP(inner_dim, config)
def forward(
self,
hidden_states: Optional[Tuple[torch.FloatTensor]],
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = False,
output_attentions: Optional[bool] = False,
) -> Union[Tuple[torch.Tensor], Optional[Tuple[torch.Tensor, Tuple[torch.FloatTensor, ...]]]]:
residual = hidden_states
hidden_states = self.input_layernorm(hidden_states)
attn_outputs = self.attn(
hidden_states,
past_key_value=past_key_value,
attention_mask=attention_mask,
position_ids=position_ids,
head_mask=head_mask,
use_cache=use_cache,
output_attentions=output_attentions,
)
attn_output = attn_outputs[0]
outputs = attn_outputs[1:]
# residual connection
hidden_states = attn_output + residual
residual = hidden_states
hidden_states = self.post_attention_layernorm(hidden_states)
feed_forward_hidden_states = self.mlp(hidden_states)
# residual connection
hidden_states = residual + feed_forward_hidden_states
if use_cache:
outputs = (hidden_states,) + outputs
else:
outputs = (hidden_states,) + outputs[1:]
return outputs
class ClvpConditioningEncoder(nn.Module):
"""
This class processes the log-mel spectrograms(extracted by the Feature Extractor) and text tokens(produced by the
tokenizer) as inputs for the decoder model.
First each log-mel spectrogram is processed into a single vector which captures valuable characteristics from each
of them, then the text tokens are converted into token embeddings and position embeddings are added afterwards.
Both of these vectors are concatenated and then passed to the decoder model.
The text tokens helps to incorporate the "text information" and the log-mel spectrogram is used to specify the
"voice characteristics" into the generated mel tokens.
"""
def __init__(self, config: ClvpConfig):
super().__init__()
self.text_config = config.text_config
self.decoder_config = config.decoder_config
self.text_token_embedding = nn.Embedding(self.text_config.vocab_size, self.decoder_config.hidden_size)
self.text_position_embedding = nn.Embedding(
self.decoder_config.max_text_tokens, self.decoder_config.hidden_size
)
self.mel_conv = nn.Conv1d(self.decoder_config.feature_size, self.decoder_config.hidden_size, kernel_size=1)
# define group norms to be used before each attention layer
num_groups = self.compute_groupnorm_groups(self.decoder_config.hidden_size)
self.group_norms = nn.ModuleList(
[
nn.GroupNorm(num_groups, self.decoder_config.hidden_size, eps=1e-5, affine=True)
for _ in range(self.decoder_config.num_mel_attn_blocks)
]
)
# define the attention layers
self.mel_attn_blocks = nn.ModuleList(
[ClvpSelfAttention(self.decoder_config) for _ in range(self.decoder_config.num_mel_attn_blocks)]
)
self.gradient_checkpointing = False
def compute_groupnorm_groups(self, channels: int, groups: int = 32):
"""
Calculates the value of `num_groups` for nn.GroupNorm. This logic is taken from the official tortoise
repository. link :
https://github.com/neonbjb/tortoise-tts/blob/4003544b6ff4b68c09856e04d3eff9da26d023c2/tortoise/models/arch_util.py#L26
"""
if channels <= 16:
groups = 8
elif channels <= 64:
groups = 16
while channels % groups != 0:
groups = int(groups / 2)
if groups <= 2:
raise ValueError(
f"Number of groups for the GroupNorm must be greater than 2, but it is {groups}."
f"Please consider using a different `hidden_size`"
)
return groups
def forward(
self,
input_features: torch.FloatTensor,
input_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
):
# process text
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
batch_size, seq_length = input_ids.size()
elif inputs_embeds is not None:
batch_size, seq_length = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
# construct attention mask if not given
if attention_mask is None:
attention_mask = torch.ones([batch_size, seq_length], dtype=torch.long, device=input_ids.device)
# We add bos and eos input_ids in the modeling file instead of the tokenizer file to keep the logic simple
# This logic is specific to ClvpConditioningEncoder and not used by other modules.
input_ids, attention_mask = _pad_extra_bos_eos_tokens(
input_ids,
attention_mask,
bos_token_id=self.text_config.bos_token_id,
eos_token_id=self.text_config.eos_token_id,
)
inputs_embeds = self.text_token_embedding(input_ids)
position_ids = attention_mask.cumsum(-1) - 1
position_embeds = self.text_position_embedding(position_ids)
text_embeds = inputs_embeds + position_embeds
if self.gradient_checkpointing and self.training:
# process each log-mel spectrogram into a single vector
mel_spec = torch.utils.checkpoint.checkpoint(self.mel_conv, input_features)
for i, mel_attn_block in enumerate(self.mel_attn_blocks):
residual_mel_spec = mel_spec.transpose(1, 2)
mel_spec = torch.utils.checkpoint.checkpoint(self.group_norms[i], mel_spec).transpose(1, 2)
mel_spec = torch.utils.checkpoint.checkpoint(mel_attn_block, mel_spec)[0] + residual_mel_spec
mel_spec = mel_spec.transpose(1, 2)
else:
# process each log-mel spectrogram into a single vector
mel_spec = self.mel_conv(input_features)
for i, mel_attn_block in enumerate(self.mel_attn_blocks):
residual_mel_spec = mel_spec.transpose(1, 2)
mel_spec = self.group_norms[i](mel_spec).transpose(1, 2)
mel_spec = mel_attn_block(mel_spec)[0] + residual_mel_spec
mel_spec = mel_spec.transpose(1, 2)
mel_spec = mel_spec[:, :, 0]
mel_spec = mel_spec.unsqueeze(1)
# repeat if there is either (1 text vs N audios) or (N texts vs 1 audio)
if text_embeds.shape[0] == 1 and mel_spec.shape[0] != 1:
text_embeds = text_embeds.repeat(mel_spec.shape[0], 1, 1)
elif text_embeds.shape[0] != 1 and mel_spec.shape[0] == 1:
mel_spec = mel_spec.repeat(text_embeds.shape[0], 1, 1)
# If there is N texts and M audios we will raise error since the number of text and audio must be same.
elif text_embeds.shape[0] != mel_spec.shape[0]:
raise ValueError(
f"The number of texts and number of audios must be same. "
f"Found {text_embeds.shape[0]} texts vs {mel_spec.shape[0]} audios"
)
return torch.concat([mel_spec, text_embeds], dim=1)
class ClvpPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = ClvpConfig
base_model_prefix = "clvp"
supports_gradient_checkpointing = True
_skip_keys_device_placement = "past_key_values"
def _init_weights(self, module):
"""Initialize the weights"""
factor = self.config.initializer_factor
if isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=factor * 0.02)
elif isinstance(module, (nn.Linear, Conv1D, nn.Conv1d)):
module.weight.data.normal_(mean=0.0, std=factor * 0.02)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, ClvpEncoderMLP):
factor = self.config.initializer_factor
in_proj_std = (module.config.hidden_size**-0.5) * ((2 * module.config.num_hidden_layers) ** -0.5) * factor
fc_std = (2 * module.config.hidden_size) ** -0.5 * factor
nn.init.normal_(module.fc1.proj.weight if getattr(module.fc1, "proj") else module.fc1.weight, std=fc_std)
nn.init.normal_(module.fc2.weight, std=in_proj_std)
elif isinstance(module, ClvpEncoder):
config = self.config.text_config if hasattr(self.config, "text_config") else self.config
factor = config.initializer_factor
module.projection.weight.data.normal_(mean=0.0, std=factor * (config.hidden_size**-0.5))
elif isinstance(module, ClvpConditioningEncoder):
module.mel_conv.weight.data.normal_(mean=0.0, std=factor)
module.mel_conv.bias.data.zero_()
elif isinstance(module, ClvpForCausalLM):
for name, p in module.named_parameters():
if name == "c_proj.weight":
p.data.normal_(
mean=0.0, std=(self.config.initializer_range / math.sqrt(2 * self.config.num_hidden_layers))
)
if isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
CLVP_START_DOCSTRING = r"""
This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
etc.)
This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
and behavior.
Parameters:
config ([`ClvpConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
CLVP_INPUTS_DOCSTRING = r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
it.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
input_features (`torch.FloatTensor` of shape `(batch_size, feature_size, time_dim)`):
Indicates log mel-spectrogram representations for audio returned by [`ClvpFeatureExtractor`].
conditioning_encoder_inputs_embeds (`torch.FloatTensor`, *optional*):
inputs_embeds for `ClvpConditioningEncoder`. Can be used in place of `input_ids`.
text_encoder_inputs_embeds (`torch.FloatTensor`, *optional*):
inputs_embeds for the text encoder model passed in place of `input_ids`.
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding text token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
return_loss (`bool`, *optional*):
Whether or not to return the contrastive loss.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
"""
CLVP_DECODER_INPUTS_DOCSTRING = r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, input_ids_length)`):
Indices of input sequence tokens in the vocabulary.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
past_key_values (`Tuple[Tuple[torch.Tensor]]` of length `config.n_layers`):
Contains precomputed hidden-states (key and values in the attention blocks) as computed by the model (see
`past_key_values` output below). Can be used to speed up sequential decoding. The `input_ids` which have
their past given to this model should not be passed as `input_ids` as they have already been computed.
attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
If `past_key_values` is used, `attention_mask` needs to contain the masking strategy that was used for
`past_key_values`. In other words, the `attention_mask` always has to have the length:
`len(past_key_values) + len(input_ids)`
[What are attention masks?](../glossary#attention-mask)
token_type_ids (`torch.LongTensor` of shape `(batch_size, input_ids_length)`, *optional*):
Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,
1]`:
- 0 corresponds to a *sentence A* token,
- 1 corresponds to a *sentence B* token.
[What are token type IDs?](../glossary#token-type-ids)
position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
config.max_position_embeddings - 1]`.
[What are position IDs?](../glossary#position-ids)
head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*):
Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
model's internal embedding lookup matrix.
If `past_key_values` is used, optionally only the last `inputs_embeds` have to be input (see
`past_key_values`).
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
"""
class ClvpEncoder(ClvpPreTrainedModel):
"""
Transformer encoder consisting of `config.num_hidden_layers` self attention layers. Each layer is a
[`ClvpEncoderLayer`].
Args:
config: ClvpConfig
"""
def __init__(self, config: ClvpConfig):
super().__init__(config)
self.config = config
self.token_embedding = nn.Embedding(config.vocab_size, config.hidden_size)
self.rotary_pos_emb = ClvpRotaryPositionalEmbedding(config) if config.use_rotary_embedding else None
self.layers = nn.ModuleList([ClvpEncoderLayer(config) for _ in range(config.num_hidden_layers)])
self.sequence_summary = SequenceSummary(config)
self.final_layer_norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.projection = nn.Linear(config.hidden_size, config.projection_dim, bias=False)
self.gradient_checkpointing = False
self.post_init()
def get_input_embeddings(self):
return self.token_embedding
def set_input_embeddings(self, value):
self.token_embedding = value
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutput]:
r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, input_ids_length)`, *optional*):
Indices of input sequence tokens in the vocabulary.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
input embeddings for the model. This bypasses the model's internal embedding lookup matrix.
attention_mask (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
position_ids (`torch.LongTensor`, *optional*):
Denotes the position ids of `input_ids`.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors
for more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
self.warn_if_padding_and_no_attention_mask(input_ids, attention_mask)
input_shape = input_ids.size()
input_ids = input_ids.view(-1, input_shape[-1])
inputs_embeds = self.token_embedding(input_ids)
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
# expand attention_mask and create position_ids if needed
if attention_mask is not None:
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
attention_mask = _prepare_4d_attention_mask(attention_mask, inputs_embeds.dtype)
if position_ids is None:
device = input_ids.device if input_ids is not None else inputs_embeds.device
position_ids = torch.arange(input_shape[1], dtype=torch.long, device=device)
position_ids = position_ids.unsqueeze(0)
encoder_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
rotary_pos_emb = self.rotary_pos_emb(inputs_embeds) if self.rotary_pos_emb is not None else None
hidden_states = inputs_embeds
for idx, encoder_layer in enumerate(self.layers):
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
if self.gradient_checkpointing and self.training:
layer_outputs = torch.utils.checkpoint.checkpoint(
encoder_layer.__call__,
hidden_states,
rotary_pos_emb,
attention_mask,
position_ids,
)
else:
layer_outputs = encoder_layer(
hidden_states,
rotary_pos_emb,
attention_mask,
position_ids,
output_attentions=output_attentions,
)
hidden_states = layer_outputs[0]
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
last_hidden_state = hidden_states
last_hidden_state = self.final_layer_norm(last_hidden_state)
# take the mean over axis 1 and get pooled output
pooled_output = self.sequence_summary(last_hidden_state)
# apply the projection layer
embeds = self.projection(pooled_output)
if not return_dict:
return tuple(
v for v in [embeds, last_hidden_state, pooled_output, encoder_states, all_attentions] if v is not None
)
return ClvpEncoderOutput(
embeds=embeds,
last_hidden_state=last_hidden_state,
pooler_output=pooled_output,
hidden_states=encoder_states,
attentions=all_attentions,
)
class ClvpDecoder(ClvpPreTrainedModel):
"""
Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`ClvpDecoderLayer`]
"""
def __init__(self, config):
super().__init__(config)
self.config = config
self.input_embeds_layer = nn.Embedding(self.config.vocab_size, self.config.hidden_size)
self.position_embeds_layer = nn.Embedding(self.config.max_position_embeddings, self.config.hidden_size)
self.drop = nn.Dropout(self.config.embd_pdrop)
self.layers = nn.ModuleList([ClvpDecoderLayer(self.config) for _ in range(self.config.num_hidden_layers)])
self.layer_norm = nn.LayerNorm(self.config.hidden_size, eps=self.config.layer_norm_epsilon)
self.gradient_checkpointing = False
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.input_embeds_layer
def set_input_embeddings(self, new_embeddings):
self.input_embeds_layer = new_embeddings
def _prune_heads(self, heads_to_prune):
"""
Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer}
"""
for layer, heads in heads_to_prune.items():
self.layers[layer].attn.prune_heads(heads)
@add_start_docstrings_to_model_forward(CLVP_DECODER_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPastAndCrossAttentions]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
self.warn_if_padding_and_no_attention_mask(input_ids, attention_mask)
input_shape = input_ids.size()
input_ids = input_ids.view(-1, input_shape[-1])
input_ids.shape[0]
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
inputs_embeds.shape[0]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
device = input_ids.device if input_ids is not None else inputs_embeds.device
if token_type_ids is not None:
token_type_ids = token_type_ids.view(-1, input_shape[-1])
if past_key_values is None:
past_key_values_length = 0
past_key_values = tuple([None] * len(self.layers))
else:
past_key_values_length = past_key_values[0][0].size(-2)
if position_ids is None:
position_ids = torch.arange(
past_key_values_length, input_shape[-1] + past_key_values_length, dtype=torch.long, device=device
)
position_ids = position_ids.unsqueeze(0).view(-1, input_shape[-1])
if inputs_embeds is None:
inputs_embeds = self.input_embeds_layer(input_ids)
position_embeds = self.position_embeds_layer(position_ids)
inputs_embeds = inputs_embeds + position_embeds
attention_mask = _prepare_4d_causal_attention_mask(
attention_mask, input_shape, inputs_embeds, past_key_values_length
)
# Prepare head mask if needed
# 1.0 in head_mask indicate we keep the head
# attention_probs has shape bsz x num_attention_heads x N x N
# head_mask has shape num_hidden_layers x batch x num_attention_heads x N x N
head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
hidden_states = inputs_embeds
if token_type_ids is not None:
token_type_embeds = self.input_embeds_layer(token_type_ids)
hidden_states = hidden_states + token_type_embeds
hidden_states = self.drop(hidden_states)
output_shape = (-1,) + input_shape[1:] + (hidden_states.size(-1),)
if self.gradient_checkpointing and self.training:
if use_cache:
logger.warning_once(
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
)
use_cache = False
presents = () if use_cache else None
all_self_attentions = () if output_attentions else None
all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None
all_hidden_states = () if output_hidden_states else None
for i, (block, past_key_value) in enumerate(zip(self.layers, past_key_values)):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if self.gradient_checkpointing and self.training:
outputs = torch.utils.checkpoint.checkpoint(
block.__call__,
hidden_states,
None,
attention_mask,
position_ids,
head_mask[i],
)
else:
outputs = block(
hidden_states,
past_key_value=past_key_value,
attention_mask=attention_mask,
position_ids=position_ids,
head_mask=head_mask[i],
use_cache=use_cache,
output_attentions=output_attentions,
)
hidden_states = outputs[0]
if use_cache is True:
presents = presents + (outputs[1],)
if output_attentions:
all_self_attentions = all_self_attentions + (outputs[2 if use_cache else 1],)
if self.config.add_cross_attention:
all_cross_attentions = all_cross_attentions + (outputs[3 if use_cache else 2],)
hidden_states = self.layer_norm(hidden_states)
hidden_states = hidden_states.view(output_shape)
# Add last hidden state
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [hidden_states, presents, all_hidden_states, all_self_attentions, all_cross_attentions]
if v is not None
)
return BaseModelOutputWithPastAndCrossAttentions(
last_hidden_state=hidden_states,
past_key_values=presents,
hidden_states=all_hidden_states,
attentions=all_self_attentions,
cross_attentions=all_cross_attentions,
)
@add_start_docstrings(
"The bare Clvp decoder model outputting raw hidden-states without any specific head on top.",
CLVP_START_DOCSTRING,
)
class ClvpModel(ClvpPreTrainedModel):
def __init__(self, config: ClvpDecoderConfig):
super().__init__(config)
self.config = config
self.decoder = ClvpDecoder(self.config)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.decoder.input_embeds_layer
def set_input_embeddings(self, value):
self.decoder.input_embeds_layer = value
def get_decoder(self):
return self.decoder
@add_start_docstrings_to_model_forward(CLVP_DECODER_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPastAndCrossAttentions]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
# decoder outputs consists of (dec_features, past_key_value, dec_hidden, dec_attn)
decoder_outputs = self.decoder(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
if not return_dict:
return decoder_outputs
return BaseModelOutputWithPastAndCrossAttentions(
last_hidden_state=decoder_outputs.last_hidden_state,
past_key_values=decoder_outputs.past_key_values,
hidden_states=decoder_outputs.hidden_states,
attentions=decoder_outputs.attentions,
cross_attentions=decoder_outputs.cross_attentions,
)
@add_start_docstrings(
"The CLVP decoder model with a language modelling head on top.",
CLVP_START_DOCSTRING,
)
class ClvpForCausalLM(ClvpPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.config = config
self.model = ClvpModel(self.config)
self.final_norm = nn.LayerNorm(self.config.hidden_size)
self.lm_head = nn.Linear(self.config.hidden_size, self.config.vocab_size, bias=True)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.model.decoder.input_embeds_layer
def set_input_embeddings(self, new_embeddings):
self.model.decoder.input_embeds_layer = new_embeddings
def _prepare_model_inputs(
self,
inputs: Optional[torch.Tensor] = None,
bos_token_id: Optional[int] = None,
model_kwargs: Optional[Dict[str, torch.Tensor]] = None,
) -> Tuple[torch.Tensor, Optional[str], Dict[str, torch.Tensor]]:
"""
This function extracts the model-specific `inputs` for generation.
"""
input_name = self.main_input_name
model_kwargs = {k: v for k, v in model_kwargs.items() if v is not None}
inputs_kwarg = model_kwargs.pop(input_name, None)
if inputs_kwarg is not None and inputs is not None:
raise ValueError(
f"`inputs`: {inputs}` were passed alongside {input_name} which is not allowed."
f"Make sure to either pass {inputs} or {input_name}=..."
)
elif inputs_kwarg is not None:
inputs = inputs_kwarg
if input_name == "input_ids" and "inputs_embeds" in model_kwargs:
model_kwargs["input_ids"] = self._maybe_initialize_input_ids_for_generation(
inputs, bos_token_id, model_kwargs=model_kwargs
)
inputs, input_name = model_kwargs["inputs_embeds"], "inputs_embeds"
# Check if conditioning_embeds are provided or not, if yes then concatenate the bos_token_id at the end of the conditioning_embeds.
# Then we must subtract the positional_ids because during the forward pass it will be added anyways, so we must cancel them out here.
conditioning_embeds = model_kwargs.get("conditioning_embeds", None)
if conditioning_embeds is not None:
mel_start_token_embedding = self.model.decoder.input_embeds_layer(
torch.full(
(conditioning_embeds.shape[0], 1),
fill_value=self.config.bos_token_id,
device=conditioning_embeds.device,
)
)
mel_start_token_embedding += self.model.decoder.position_embeds_layer(
torch.full((conditioning_embeds.shape[0], 1), fill_value=0, device=conditioning_embeds.device)
)
conditioning_embeds = torch.concat([conditioning_embeds, mel_start_token_embedding], dim=1)
# subtract the positional_ids here
if hasattr(model_kwargs, "attention_mask"):
position_ids = model_kwargs["attention_mask"].long().cumsum(-1) - 1
else:
position_ids = torch.range(
0, conditioning_embeds.shape[1] - 1, dtype=torch.long, device=conditioning_embeds.device
)
position_ids = position_ids.unsqueeze(0).repeat(conditioning_embeds.shape[0], 1)
model_kwargs["inputs_embeds"] = conditioning_embeds - self.model.decoder.position_embeds_layer(
position_ids
)
model_kwargs["input_ids"] = (
torch.ones((model_kwargs["inputs_embeds"].shape[0], 1), dtype=torch.long, device=self.device)
* self.config.bos_token_id
)
return model_kwargs["inputs_embeds"], "inputs_embeds", model_kwargs
inputs = self._maybe_initialize_input_ids_for_generation(inputs, bos_token_id, model_kwargs)
return inputs, input_name, model_kwargs
def prepare_inputs_for_generation(
self, input_ids, past_key_values=None, inputs_embeds=None, conditioning_embeds=None, **kwargs
):
input_ids_length = input_ids.shape[-1]
token_type_ids = kwargs.get("token_type_ids", None)
# only last token for inputs_ids if past is defined in kwargs
if past_key_values:
past_length = past_key_values[0][0].shape[2]
# Some generation methods already pass only the last input ID
if input_ids.shape[1] > past_length:
remove_prefix_length = past_length
else:
# Default to old behavior: keep only final ID
remove_prefix_length = input_ids.shape[1] - 1
input_ids = input_ids[:, remove_prefix_length:]
if token_type_ids is not None:
token_type_ids = token_type_ids[:, -input_ids.shape[1] :]
attention_mask = kwargs.get("attention_mask", None)
position_ids = kwargs.get("position_ids", None)
if attention_mask is not None and position_ids is None:
# create position_ids on the fly for batch generation
position_ids = attention_mask.long().cumsum(-1) - 1
position_ids.masked_fill_(attention_mask == 0, 1)
if past_key_values:
position_ids = position_ids[:, -1].unsqueeze(-1)
else:
position_ids = None
if conditioning_embeds is not None and past_key_values is not None:
position_ids = torch.tensor([input_ids_length], dtype=torch.long, device=input_ids.device)
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
else:
model_inputs = {"input_ids": input_ids}
model_inputs.update(
{
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
"position_ids": position_ids,
"token_type_ids": token_type_ids,
}
)
return model_inputs
@add_start_docstrings_to_model_forward(CLVP_DECODER_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, CausalLMOutputWithCrossAttentions]:
r"""
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for language modeling. Note that the labels **are shifted** inside the model, i.e. you can set
`labels = input_ids` Indices are selected in `[-100, 0, ..., config.vocab_size]` All labels set to `-100`
are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size]`
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
outputs = self.model(
input_ids=input_ids,
past_key_values=past_key_values,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = outputs[0]
lm_logits = self.final_norm(hidden_states)
lm_logits = self.lm_head(lm_logits)
loss = None
if labels is not None:
labels = labels.to(lm_logits.device)
# Shift so that tokens < n predict n
shift_logits = lm_logits[..., :-1, :].contiguous()
shift_labels = labels[..., 1:].contiguous()
# Flatten the tokens
loss_fct = CrossEntropyLoss()
loss = loss_fct(shift_logits.view(-1, shift_logits.size(-1)), shift_labels.view(-1))
if not return_dict:
output = (lm_logits,) + outputs[1:]
return ((loss,) + output) if loss is not None else output
return CausalLMOutputWithCrossAttentions(
loss=loss,
logits=lm_logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
cross_attentions=outputs.cross_attentions,
)
@staticmethod
# Copied from transformers.models.gpt2.modeling_gpt2.GPT2LMHeadModel._reorder_cache
def _reorder_cache(
past_key_values: Tuple[Tuple[torch.Tensor]], beam_idx: torch.Tensor
) -> Tuple[Tuple[torch.Tensor]]:
"""
This function is used to re-order the `past_key_values` cache if [`~PreTrainedModel.beam_search`] or
[`~PreTrainedModel.beam_sample`] is called. This is required to match `past_key_values` with the correct
beam_idx at every generation step.
"""
return tuple(
tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past)
for layer_past in past_key_values
)
@add_start_docstrings(
"The composite CLVP model with a text encoder, speech encoder and speech decoder model."
"The speech decoder model generates the speech_ids from the text and the text encoder and speech encoder works"
"together to filter out the best speech_ids.",
CLVP_START_DOCSTRING,
)
class ClvpModelForConditionalGeneration(ClvpPreTrainedModel):
config_class = ClvpConfig
def __init__(self, config: ClvpConfig):
super().__init__(config)
if not isinstance(config.text_config, ClvpEncoderConfig):
raise TypeError(
"config.text_config is expected to be of type `ClvpEncoderConfig` but is of type"
f" {type(config.text_config)}."
)
if not isinstance(config.speech_config, ClvpEncoderConfig):
raise TypeError(
"config.speech_config is expected to be of type `ClvpEncoderConfig` but is of type"
f" {type(config.speech_config)}."
)
if not isinstance(config.decoder_config, ClvpDecoderConfig):
raise TypeError(
"config.decoder_config is expected to be of type `ClvpDecoderConfig` but is of type"
f" {type(config.decoder_config)}."
)
self.conditioning_encoder = ClvpConditioningEncoder(config)
self.speech_decoder_model = ClvpForCausalLM(config.decoder_config)
self.text_encoder_model = ClvpEncoder(config.text_config)
self.speech_encoder_model = ClvpEncoder(config.speech_config)
self.logit_scale = nn.Parameter(torch.tensor(self.config.logit_scale_init_value))
# Initialize weights and apply final processing
self.post_init()
# taken from the original repo,
# link : https://github.com/neonbjb/tortoise-tts/blob/4003544b6ff4b68c09856e04d3eff9da26d023c2/tortoise/api.py#L117
def fix_speech_decoder_output(self, speech_ids: torch.LongTensor) -> torch.LongTensor:
"""
This method modifies the output of the decoder model, such as replacing the `eos_token_id` and changing the
last few tokens of each sequence.
Args:
speech_ids (`torch.LongTensor`):
This refers to the output of the decoder model.
"""
decoder_fixing_codes = self.config.decoder_config.decoder_fixing_codes
speech_ids = speech_ids[:, 1:]
stop_token_indices = torch.where(speech_ids == self.speech_decoder_model.config.eos_token_id, 1, 0)
speech_ids = torch.masked_fill(speech_ids, mask=stop_token_indices.bool(), value=decoder_fixing_codes[0])
for i, each_seq_stop_token_index in enumerate(stop_token_indices):
# This means that no stop tokens were found so the sentence was still being generated, in that case we don't need
# to apply any padding so just skip to the next sequence of tokens.
if each_seq_stop_token_index.sum() == 0:
continue
stm = each_seq_stop_token_index.argmax()
speech_ids[i, stm:] = decoder_fixing_codes[0]
if stm - 3 < speech_ids.shape[1]:
speech_ids[i, -3:] = torch.tensor(
[decoder_fixing_codes[1:]], device=speech_ids.device, dtype=torch.long
)
return speech_ids
def get_text_features(
self,
input_ids: Optional[torch.LongTensor] = None,
text_encoder_inputs_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
) -> torch.FloatTensor:
r"""
This method can be used to extract text_embeds from a text. The text embeddings obtained by applying the
projection layer to the pooled output of the CLVP text encoder model.
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you
provide it.
[What are input IDs?](../glossary#input-ids)
text_encoder_inputs_embeds (`torch.FloatTensor`, *optional*):
inputs_embeds for the text encoder model passed in place of `input_ids`.
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
Returns:
`torch.FloatTensor` of shape `(batch_size, output_dim)`:
The text embeddings obtained by applying the projection layer to the pooled output of the CLVP Text
Model.
Examples:
```python
>>> from transformers import ClvpProcessor, ClvpModelForConditionalGeneration
>>> # Define the Text
>>> text = "This is an example text."
>>> # Define processor and model
>>> processor = ClvpProcessor.from_pretrained("susnato/clvp_dev")
>>> model = ClvpModelForConditionalGeneration.from_pretrained("susnato/clvp_dev")
>>> # Generate processor output and text embeds
>>> processor_output = processor(text=text, return_tensors="pt")
>>> text_embeds = model.get_text_features(input_ids=processor_output["input_ids"])
```
"""
outputs = self.text_encoder_model(
input_ids=input_ids,
inputs_embeds=text_encoder_inputs_embeds,
attention_mask=attention_mask,
)
return outputs[0]
def get_speech_features(
self,
speech_ids: Optional[torch.LongTensor] = None,
input_ids: Optional[torch.LongTensor] = None,
input_features: Optional[torch.FloatTensor] = None,
conditioning_encoder_inputs_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.Tensor] = None,
generation_config: Optional[GenerationConfig] = None,
**kwargs,
) -> torch.FloatTensor:
r"""
This method can be used to extract speech_embeds. The speech embeddings are obtained by applying the speech
model on speech_ids. If speech_ids is not present but both input_ids and input_features are given then the
decoder model will be used to first generate the speech_ids and then applying the speech model.
Args:
speech_ids (`torch.LongTensor` of shape `(batch_size, num_speech_ids)`, *optional*):
Speech Tokens. Padding will be ignored by default should you provide it. If speech_ids are provided
then input_ids and input_features will be automatically ignored.
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Input text Tokens. Processed from the [`ClvpTokenizer`]. If speech_ids is not provided, then input_ids
and input_features will be used.
input_features (`torch.FloatTensor` of shape `(batch_size, feature_size, time_dim)`, *optional*):
Indicates log-melspectrogram representations for audio returned by [`ClvpFeatureExtractor`]. If
speech_ids is not provided, then input_ids and input_features will be used.
conditioning_encoder_inputs_embeds (`torch.FloatTensor`, *optional*):
inputs_embeds for `ClvpConditioningEncoder`. Can be used in place of `input_ids`.
attention_mask (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding speech token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
generation_config (`GenerationConfig`, *optional*):
generation config to control the generation of speech_ids if they are not provided.
Returns:
`torch.FloatTensor` of shape `(batch_size, output_dim)`:
The speech embeddings obtained by applying the projection layer to the pooled output of the CLVP Speech
Model.
Examples:
```python
>>> import datasets
>>> from transformers import ClvpProcessor, ClvpModelForConditionalGeneration
>>> # Define the Text and Load the Audio (We are taking an audio example from HuggingFace Hub using `datasets` library)
>>> text = "This is an example text."
>>> ds = datasets.load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
>>> ds = ds.cast_column("audio", datasets.Audio(sampling_rate=22050))
>>> _, audio, sr = ds.sort("id").select(range(1))[:1]["audio"][0].values()
>>> # Define processor and model
>>> processor = ClvpProcessor.from_pretrained("susnato/clvp_dev")
>>> model = ClvpModelForConditionalGeneration.from_pretrained("susnato/clvp_dev")
>>> # Generate processor output and model output
>>> processor_output = processor(raw_speech=audio, sampling_rate=sr, text=text, return_tensors="pt")
>>> speech_embeds = model.get_speech_features(
... input_ids=processor_output["input_ids"], input_features=processor_output["input_features"]
... )
```
"""
if speech_ids is None:
if (input_ids is None and conditioning_encoder_inputs_embeds is None) or input_features is None:
raise ValueError(
"Either speech_ids or input_ids/conditioning_encoder_inputs_embeds and input_features must be provided."
)
if generation_config is None:
generation_config = self.generation_config
generation_config.update(**kwargs)
conditioning_embeds = self.conditioning_encoder(
input_features=input_features,
input_ids=input_ids,
inputs_embeds=conditioning_encoder_inputs_embeds,
attention_mask=attention_mask,
)
speech_ids = self.speech_decoder_model.generate(
conditioning_embeds=conditioning_embeds,
generation_config=generation_config,
)
speech_ids = self.fix_speech_decoder_output(speech_ids[0])
outputs = self.speech_encoder_model(
input_ids=speech_ids,
attention_mask=attention_mask,
)
return outputs[0]
@add_start_docstrings_to_model_forward(CLVP_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=ClvpOutput, config_class=ClvpConfig)
def forward(
self,
input_ids: torch.LongTensor = None,
input_features: torch.FloatTensor = None,
conditioning_encoder_inputs_embeds: Optional[torch.FloatTensor] = None,
text_encoder_inputs_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
return_loss: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
output_attentions: Optional[bool] = False,
return_dict: Optional[bool] = None,
) -> Union[Tuple, ClvpOutput]:
r"""
Returns:
Examples:
```python
>>> import datasets
>>> from transformers import ClvpProcessor, ClvpModelForConditionalGeneration
>>> # Define the Text and Load the Audio (We are taking an audio example from HuggingFace Hub using `datasets` library)
>>> text = "This is an example text."
>>> ds = datasets.load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
>>> ds = ds.cast_column("audio", datasets.Audio(sampling_rate=22050))
>>> _, audio, sr = ds.sort("id").select(range(1))[:1]["audio"][0].values()
>>> # Define processor and model
>>> processor = ClvpProcessor.from_pretrained("susnato/clvp_dev")
>>> model = ClvpModelForConditionalGeneration.from_pretrained("susnato/clvp_dev")
>>> # processor outputs and model outputs
>>> processor_output = processor(raw_speech=audio, sampling_rate=sr, text=text, return_tensors="pt")
>>> outputs = model(
... input_ids=processor_output["input_ids"],
... input_features=processor_output["input_features"],
... return_dict=True,
... )
```
"""
# Use CLVP model's config for some fields (if specified) instead of those of speech & text components.
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
conditioning_embeds = self.conditioning_encoder(
input_features=input_features,
input_ids=input_ids,
inputs_embeds=conditioning_encoder_inputs_embeds,
attention_mask=attention_mask,
)
decoder_outputs = self.speech_decoder_model(
inputs_embeds=conditioning_embeds,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
speech_ids = decoder_outputs[0]
# since we will get the embeds of shape `(batch_size, seq_len, embedding_dim)` during the forward pass
# we must convert it to tokens, to make it compaitable with speech_transformer
if speech_ids.ndim == 3:
speech_ids = speech_ids.argmax(2)
speech_ids = self.fix_speech_decoder_output(speech_ids)
speech_outputs = self.speech_encoder_model(
input_ids=speech_ids,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
text_outputs = self.text_encoder_model(
input_ids=input_ids,
inputs_embeds=text_encoder_inputs_embeds,
attention_mask=attention_mask,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
speech_embeds = speech_outputs[0]
text_embeds = text_outputs[0]
# normalized features
speech_embeds = speech_embeds / speech_embeds.norm(p=2, dim=-1, keepdim=True)
text_embeds = text_embeds / text_embeds.norm(p=2, dim=-1, keepdim=True)
# cosine similarity as logits
logit_scale = self.logit_scale.exp()
logits_per_text = torch.matmul(text_embeds, speech_embeds.t()) * logit_scale
logits_per_speech = logits_per_text.t()
loss = None
if return_loss:
loss = clvp_loss(logits_per_text)
if not return_dict:
output = (
logits_per_speech,
logits_per_text,
text_embeds,
speech_embeds,
text_outputs[2],
speech_outputs[2],
)
if output_hidden_states:
output += (
decoder_outputs[-1],
text_outputs[-1],
speech_outputs[-1],
)
return ((loss,) + output) if loss is not None else output
return ClvpOutput(
loss=loss,
logits_per_speech=logits_per_speech,
logits_per_text=logits_per_text,
text_embeds=text_embeds,
speech_embeds=speech_embeds,
text_model_output=text_outputs[2],
speech_model_output=speech_outputs[2],
decoder_hidden_states=decoder_outputs.hidden_states,
text_encoder_hidden_states=text_outputs.hidden_states,
speech_encoder_hidden_states=speech_outputs.hidden_states,
)
@torch.no_grad()
def generate(
self,
input_ids: torch.LongTensor = None,
input_features: torch.FloatTensor = None,
attention_mask: Optional[torch.LongTensor] = None,
generation_config: Optional[GenerationConfig] = None,
pad_to_max_mel_tokens: Optional[int] = None,
output_hidden_states: Optional[bool] = None,
**kwargs,
):
"""
Generate method for `ClvpModelForConditionalGeneration`, this method calls the `generate` method of
`ClvpForCausalLM` and then uses those generated `speech_ids` to process `text_embeds` and `speech_embeds` using
`ClvpEncoder`.
Args:
input_ids (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
Input text Tokens. Processed from the [`ClvpTokenizer`].
input_features (`torch.FloatTensor` of shape `(batch_size, feature_size, time_dim)`, *optional*):
Indicates log-melspectrogram representations for audio returned by [`ClvpFeatureExtractor`].
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding text token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
generation_config (`~generation.GenerationConfig`, *optional*):
The generation configuration to be used as base parametrization for the generation call. `**kwargs`
passed to generate matching the attributes of `generation_config` will override them. If
`generation_config` is not provided, the default will be used, which had the following loading
priority: 1) from the `generation_config.json` model file, if it exists; 2) from the model
configuration. Please note that unspecified parameters will inherit [`~generation.GenerationConfig`]'s
default values, whose documentation should be checked to parameterize generation.
pad_to_max_mel_tokens (`int`, *optional*):
Pads generated speech_ids to the specified value. This is to implement the same logic from the official
repo, link: https://github.com/neonbjb/tortoise-tts/blob/80f89987a5abda5e2b082618cd74f9c7411141dc/tortoise/api.py#L430
and to make sure the logits are same.
This does not affect generation quality so please don't consider using it since it is less efficient.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of decoder model, text encoder and speech encoder models.
Returns:
`ClvpOutput` or tuple: A `ClvpOutput` (if `return_dict_in_generate=True` or when
`config.return_dict_in_generate=True`) or a tuple.
"""
# If the input sequences are larger than (self.config.decoder_config.max_text_tokens - 3) then raise error,
# because we need to add 3 tokens ( 1 bos tokens and 2 eos tokens) to the input_ids in ClvpConditioningEncoder to
# properly sample
sequence_length = input_ids.shape[-1]
if sequence_length > (self.config.decoder_config.max_text_tokens - 3):
raise ValueError(
f"Maximum sequence length reached! Found input_ids of length {sequence_length}."
f"Please make sure that the maximum length of input_ids is {self.config.decoder_config.max_text_tokens - 3}"
)
if generation_config is None:
generation_config = self.generation_config
generation_config = copy.deepcopy(generation_config)
model_kwargs = generation_config.update(**kwargs) # All unused kwargs must be model kwargs
generation_config.validate()
self._validate_model_kwargs(model_kwargs.copy())
# pad input_ids as specified in the original repo
# link: https://github.com/neonbjb/tortoise-tts/blob/80f89987a5abda5e2b082618cd74f9c7411141dc/tortoise/api.py#L380
input_ids, attention_mask = _pad_extra_bos_eos_tokens(
input_ids,
attention_mask,
add_bos_token=False,
bos_token_id=self.config.text_config.bos_token_id,
eos_token_id=self.config.text_config.eos_token_id,
)
conditioning_embeds = self.conditioning_encoder(
input_features=input_features,
input_ids=input_ids,
attention_mask=attention_mask,
)
decoder_outputs = self.speech_decoder_model.generate(
conditioning_embeds=conditioning_embeds,
generation_config=generation_config,
output_hidden_states=output_hidden_states,
return_dict=generation_config.return_dict_in_generate,
)
if isinstance(decoder_outputs, ModelOutput):
speech_ids = decoder_outputs.sequences
# pad to pad_to_max_mel_tokens if given, to replicate the original repo logic
# link: https://github.com/neonbjb/tortoise-tts/blob/80f89987a5abda5e2b082618cd74f9c7411141dc/tortoise/api.py#L430
if pad_to_max_mel_tokens is not None:
padding_needed = pad_to_max_mel_tokens - speech_ids.shape[-1]
speech_ids = torch.nn.functional.pad(
speech_ids, (0, padding_needed), value=self.generation_config.eos_token_id
)
speech_ids = self.fix_speech_decoder_output(speech_ids)
speech_outputs = self.speech_encoder_model(
input_ids=speech_ids,
output_hidden_states=output_hidden_states,
return_dict=generation_config.return_dict_in_generate,
)
text_outputs = self.text_encoder_model(
input_ids=input_ids,
attention_mask=attention_mask,
output_hidden_states=output_hidden_states,
return_dict=generation_config.return_dict_in_generate,
)
speech_embeds = speech_outputs[0]
text_embeds = text_outputs[0]
# normalized features
speech_embeds = speech_embeds / speech_embeds.norm(p=2, dim=-1, keepdim=True)
text_embeds = text_embeds / text_embeds.norm(p=2, dim=-1, keepdim=True)
# cosine similarity as logits
logit_scale = self.logit_scale.exp()
logits_per_text = torch.matmul(text_embeds, speech_embeds.t()) * logit_scale
logits_per_speech = logits_per_text.t()
if not generation_config.return_dict_in_generate:
output = (
speech_ids,
logits_per_speech,
logits_per_text,
text_embeds,
speech_embeds,
text_outputs[2],
speech_outputs[2],
)
if output_hidden_states:
output += (
decoder_outputs[-1],
text_outputs[-1],
speech_outputs[-1],
)
return output
return ClvpOutput(
speech_ids=speech_ids,
logits_per_speech=logits_per_speech,
logits_per_text=logits_per_text,
text_embeds=text_embeds,
speech_embeds=speech_embeds,
text_model_output=text_outputs[2],
speech_model_output=speech_outputs[2],
decoder_hidden_states=decoder_outputs.hidden_states,
text_encoder_hidden_states=text_outputs.hidden_states,
speech_encoder_hidden_states=speech_outputs.hidden_states,
)
|
transformers/src/transformers/models/clvp/modeling_clvp.py/0
|
{
"file_path": "transformers/src/transformers/models/clvp/modeling_clvp.py",
"repo_id": "transformers",
"token_count": 39365
}
| 342
|
# Copyright 2022 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available
_import_structure = {
"configuration_conditional_detr": [
"ConditionalDetrConfig",
"ConditionalDetrOnnxConfig",
]
}
try:
if not is_vision_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["feature_extraction_conditional_detr"] = ["ConditionalDetrFeatureExtractor"]
_import_structure["image_processing_conditional_detr"] = ["ConditionalDetrImageProcessor"]
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_conditional_detr"] = [
"ConditionalDetrForObjectDetection",
"ConditionalDetrForSegmentation",
"ConditionalDetrModel",
"ConditionalDetrPreTrainedModel",
]
if TYPE_CHECKING:
from .configuration_conditional_detr import (
ConditionalDetrConfig,
ConditionalDetrOnnxConfig,
)
try:
if not is_vision_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .feature_extraction_conditional_detr import ConditionalDetrFeatureExtractor
from .image_processing_conditional_detr import ConditionalDetrImageProcessor
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_conditional_detr import (
ConditionalDetrForObjectDetection,
ConditionalDetrForSegmentation,
ConditionalDetrModel,
ConditionalDetrPreTrainedModel,
)
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
|
transformers/src/transformers/models/conditional_detr/__init__.py/0
|
{
"file_path": "transformers/src/transformers/models/conditional_detr/__init__.py",
"repo_id": "transformers",
"token_count": 930
}
| 343
|
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_tf_available, is_torch_available
_import_structure = {
"configuration_ctrl": ["CTRLConfig"],
"tokenization_ctrl": ["CTRLTokenizer"],
}
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_ctrl"] = [
"CTRLForSequenceClassification",
"CTRLLMHeadModel",
"CTRLModel",
"CTRLPreTrainedModel",
]
try:
if not is_tf_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_tf_ctrl"] = [
"TFCTRLForSequenceClassification",
"TFCTRLLMHeadModel",
"TFCTRLModel",
"TFCTRLPreTrainedModel",
]
if TYPE_CHECKING:
from .configuration_ctrl import CTRLConfig
from .tokenization_ctrl import CTRLTokenizer
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_ctrl import (
CTRLForSequenceClassification,
CTRLLMHeadModel,
CTRLModel,
CTRLPreTrainedModel,
)
try:
if not is_tf_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_tf_ctrl import (
TFCTRLForSequenceClassification,
TFCTRLLMHeadModel,
TFCTRLModel,
TFCTRLPreTrainedModel,
)
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
|
transformers/src/transformers/models/ctrl/__init__.py/0
|
{
"file_path": "transformers/src/transformers/models/ctrl/__init__.py",
"repo_id": "transformers",
"token_count": 939
}
| 344
|
# coding=utf-8
# Copyright 2021 Microsoft and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""TF 2.0 DeBERTa model."""
from __future__ import annotations
import math
from typing import Dict, Optional, Sequence, Tuple, Union
import numpy as np
import tensorflow as tf
from ...activations_tf import get_tf_activation
from ...modeling_tf_outputs import (
TFBaseModelOutput,
TFMaskedLMOutput,
TFQuestionAnsweringModelOutput,
TFSequenceClassifierOutput,
TFTokenClassifierOutput,
)
from ...modeling_tf_utils import (
TFMaskedLanguageModelingLoss,
TFModelInputType,
TFPreTrainedModel,
TFQuestionAnsweringLoss,
TFSequenceClassificationLoss,
TFTokenClassificationLoss,
get_initializer,
keras,
unpack_inputs,
)
from ...tf_utils import check_embeddings_within_bounds, shape_list, stable_softmax
from ...utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging
from .configuration_deberta import DebertaConfig
logger = logging.get_logger(__name__)
_CONFIG_FOR_DOC = "DebertaConfig"
_CHECKPOINT_FOR_DOC = "kamalkraj/deberta-base"
class TFDebertaContextPooler(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(config.pooler_hidden_size, name="dense")
self.dropout = TFDebertaStableDropout(config.pooler_dropout, name="dropout")
self.config = config
def call(self, hidden_states, training: bool = False):
# We "pool" the model by simply taking the hidden state corresponding
# to the first token.
context_token = hidden_states[:, 0]
context_token = self.dropout(context_token, training=training)
pooled_output = self.dense(context_token)
pooled_output = get_tf_activation(self.config.pooler_hidden_act)(pooled_output)
return pooled_output
@property
def output_dim(self) -> int:
return self.config.hidden_size
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.pooler_hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaXSoftmax(keras.layers.Layer):
"""
Masked Softmax which is optimized for saving memory
Args:
input (`tf.Tensor`): The input tensor that will apply softmax.
mask (`tf.Tensor`): The mask matrix where 0 indicate that element will be ignored in the softmax calculation.
dim (int): The dimension that will apply softmax
"""
def __init__(self, axis=-1, **kwargs):
super().__init__(**kwargs)
self.axis = axis
def call(self, inputs: tf.Tensor, mask: tf.Tensor):
rmask = tf.logical_not(tf.cast(mask, tf.bool))
output = tf.where(rmask, tf.cast(float("-inf"), dtype=self.compute_dtype), inputs)
output = stable_softmax(tf.cast(output, dtype=tf.float32), self.axis)
output = tf.where(rmask, 0.0, output)
return output
class TFDebertaStableDropout(keras.layers.Layer):
"""
Optimized dropout module for stabilizing the training
Args:
drop_prob (float): the dropout probabilities
"""
def __init__(self, drop_prob, **kwargs):
super().__init__(**kwargs)
self.drop_prob = drop_prob
@tf.custom_gradient
def xdropout(self, inputs):
"""
Applies dropout to the inputs, as vanilla dropout, but also scales the remaining elements up by 1/drop_prob.
"""
mask = tf.cast(
1
- tf.compat.v1.distributions.Bernoulli(probs=1.0 - self.drop_prob).sample(sample_shape=shape_list(inputs)),
tf.bool,
)
scale = tf.convert_to_tensor(1.0 / (1 - self.drop_prob), dtype=self.compute_dtype)
if self.drop_prob > 0:
inputs = tf.where(mask, tf.cast(0.0, dtype=self.compute_dtype), inputs) * scale
def grad(upstream):
if self.drop_prob > 0:
return tf.where(mask, tf.cast(0.0, dtype=self.compute_dtype), upstream) * scale
else:
return upstream
return inputs, grad
def call(self, inputs: tf.Tensor, training: tf.Tensor = False):
if training:
return self.xdropout(inputs)
return inputs
class TFDebertaLayerNorm(keras.layers.Layer):
"""LayerNorm module in the TF style (epsilon inside the square root)."""
def __init__(self, size, eps=1e-12, **kwargs):
super().__init__(**kwargs)
self.size = size
self.eps = eps
def build(self, input_shape):
self.gamma = self.add_weight(shape=[self.size], initializer=tf.ones_initializer(), name="weight")
self.beta = self.add_weight(shape=[self.size], initializer=tf.zeros_initializer(), name="bias")
return super().build(input_shape)
def call(self, x: tf.Tensor) -> tf.Tensor:
mean = tf.reduce_mean(x, axis=[-1], keepdims=True)
variance = tf.reduce_mean(tf.square(x - mean), axis=[-1], keepdims=True)
std = tf.math.sqrt(variance + self.eps)
return self.gamma * (x - mean) / std + self.beta
class TFDebertaSelfOutput(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(config.hidden_size, name="dense")
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
self.config = config
def call(self, hidden_states, input_tensor, training: bool = False):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states, training=training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaAttention(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.self = TFDebertaDisentangledSelfAttention(config, name="self")
self.dense_output = TFDebertaSelfOutput(config, name="output")
self.config = config
def call(
self,
input_tensor: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
self_outputs = self.self(
hidden_states=input_tensor,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
if query_states is None:
query_states = input_tensor
attention_output = self.dense_output(
hidden_states=self_outputs[0], input_tensor=query_states, training=training
)
output = (attention_output,) + self_outputs[1:]
return output
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "self", None) is not None:
with tf.name_scope(self.self.name):
self.self.build(None)
if getattr(self, "dense_output", None) is not None:
with tf.name_scope(self.dense_output.name):
self.dense_output.build(None)
class TFDebertaIntermediate(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense"
)
if isinstance(config.hidden_act, str):
self.intermediate_act_fn = get_tf_activation(config.hidden_act)
else:
self.intermediate_act_fn = config.hidden_act
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
class TFDebertaOutput(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense"
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
self.config = config
def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.dropout(hidden_states, training=training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.intermediate_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaLayer(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.attention = TFDebertaAttention(config, name="attention")
self.intermediate = TFDebertaIntermediate(config, name="intermediate")
self.bert_output = TFDebertaOutput(config, name="output")
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
attention_outputs = self.attention(
input_tensor=hidden_states,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
attention_output = attention_outputs[0]
intermediate_output = self.intermediate(hidden_states=attention_output)
layer_output = self.bert_output(
hidden_states=intermediate_output, input_tensor=attention_output, training=training
)
outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "attention", None) is not None:
with tf.name_scope(self.attention.name):
self.attention.build(None)
if getattr(self, "intermediate", None) is not None:
with tf.name_scope(self.intermediate.name):
self.intermediate.build(None)
if getattr(self, "bert_output", None) is not None:
with tf.name_scope(self.bert_output.name):
self.bert_output.build(None)
class TFDebertaEncoder(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.layer = [TFDebertaLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)]
self.relative_attention = getattr(config, "relative_attention", False)
self.config = config
if self.relative_attention:
self.max_relative_positions = getattr(config, "max_relative_positions", -1)
if self.max_relative_positions < 1:
self.max_relative_positions = config.max_position_embeddings
def build(self, input_shape=None):
if self.built:
return
self.built = True
if self.relative_attention:
self.rel_embeddings = self.add_weight(
name="rel_embeddings.weight",
shape=[self.max_relative_positions * 2, self.config.hidden_size],
initializer=get_initializer(self.config.initializer_range),
)
if getattr(self, "layer", None) is not None:
for layer in self.layer:
with tf.name_scope(layer.name):
layer.build(None)
def get_rel_embedding(self):
rel_embeddings = self.rel_embeddings if self.relative_attention else None
return rel_embeddings
def get_attention_mask(self, attention_mask):
if len(shape_list(attention_mask)) <= 2:
extended_attention_mask = tf.expand_dims(tf.expand_dims(attention_mask, 1), 2)
attention_mask = extended_attention_mask * tf.expand_dims(tf.squeeze(extended_attention_mask, -2), -1)
attention_mask = tf.cast(attention_mask, tf.uint8)
elif len(shape_list(attention_mask)) == 3:
attention_mask = tf.expand_dims(attention_mask, 1)
return attention_mask
def get_rel_pos(self, hidden_states, query_states=None, relative_pos=None):
if self.relative_attention and relative_pos is None:
q = shape_list(query_states)[-2] if query_states is not None else shape_list(hidden_states)[-2]
relative_pos = build_relative_position(q, shape_list(hidden_states)[-2])
return relative_pos
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
output_attentions: bool = False,
output_hidden_states: bool = False,
return_dict: bool = True,
training: bool = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
all_hidden_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
attention_mask = self.get_attention_mask(attention_mask)
relative_pos = self.get_rel_pos(hidden_states, query_states, relative_pos)
if isinstance(hidden_states, Sequence):
next_kv = hidden_states[0]
else:
next_kv = hidden_states
rel_embeddings = self.get_rel_embedding()
for i, layer_module in enumerate(self.layer):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
layer_outputs = layer_module(
hidden_states=next_kv,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
hidden_states = layer_outputs[0]
if query_states is not None:
query_states = hidden_states
if isinstance(hidden_states, Sequence):
next_kv = hidden_states[i + 1] if i + 1 < len(self.layer) else None
else:
next_kv = hidden_states
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
# Add last layer
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None)
return TFBaseModelOutput(
last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions
)
def build_relative_position(query_size, key_size):
"""
Build relative position according to the query and key
We assume the absolute position of query \\(P_q\\) is range from (0, query_size) and the absolute position of key
\\(P_k\\) is range from (0, key_size), The relative positions from query to key is \\(R_{q \\rightarrow k} = P_q -
P_k\\)
Args:
query_size (int): the length of query
key_size (int): the length of key
Return:
`tf.Tensor`: A tensor with shape [1, query_size, key_size]
"""
q_ids = tf.range(query_size, dtype=tf.int32)
k_ids = tf.range(key_size, dtype=tf.int32)
rel_pos_ids = q_ids[:, None] - tf.tile(tf.reshape(k_ids, [1, -1]), [query_size, 1])
rel_pos_ids = rel_pos_ids[:query_size, :]
rel_pos_ids = tf.expand_dims(rel_pos_ids, axis=0)
return tf.cast(rel_pos_ids, tf.int64)
def c2p_dynamic_expand(c2p_pos, query_layer, relative_pos):
shapes = [
shape_list(query_layer)[0],
shape_list(query_layer)[1],
shape_list(query_layer)[2],
shape_list(relative_pos)[-1],
]
return tf.broadcast_to(c2p_pos, shapes)
def p2c_dynamic_expand(c2p_pos, query_layer, key_layer):
shapes = [
shape_list(query_layer)[0],
shape_list(query_layer)[1],
shape_list(key_layer)[-2],
shape_list(key_layer)[-2],
]
return tf.broadcast_to(c2p_pos, shapes)
def pos_dynamic_expand(pos_index, p2c_att, key_layer):
shapes = shape_list(p2c_att)[:2] + [shape_list(pos_index)[-2], shape_list(key_layer)[-2]]
return tf.broadcast_to(pos_index, shapes)
def torch_gather(x, indices, gather_axis):
if gather_axis < 0:
gather_axis = tf.rank(x) + gather_axis
if gather_axis != tf.rank(x) - 1:
pre_roll = tf.rank(x) - 1 - gather_axis
permutation = tf.roll(tf.range(tf.rank(x)), pre_roll, axis=0)
x = tf.transpose(x, perm=permutation)
indices = tf.transpose(indices, perm=permutation)
else:
pre_roll = 0
flat_x = tf.reshape(x, (-1, tf.shape(x)[-1]))
flat_indices = tf.reshape(indices, (-1, tf.shape(indices)[-1]))
gathered = tf.gather(flat_x, flat_indices, batch_dims=1)
gathered = tf.reshape(gathered, tf.shape(indices))
if pre_roll != 0:
permutation = tf.roll(tf.range(tf.rank(x)), -pre_roll, axis=0)
gathered = tf.transpose(gathered, perm=permutation)
return gathered
class TFDebertaDisentangledSelfAttention(keras.layers.Layer):
"""
Disentangled self-attention module
Parameters:
config (`str`):
A model config class instance with the configuration to build a new model. The schema is similar to
*BertConfig*, for more details, please refer [`DebertaConfig`]
"""
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
if config.hidden_size % config.num_attention_heads != 0:
raise ValueError(
f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention "
f"heads ({config.num_attention_heads})"
)
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
self.all_head_size = self.num_attention_heads * self.attention_head_size
self.in_proj = keras.layers.Dense(
self.all_head_size * 3,
kernel_initializer=get_initializer(config.initializer_range),
name="in_proj",
use_bias=False,
)
self.pos_att_type = config.pos_att_type if config.pos_att_type is not None else []
self.relative_attention = getattr(config, "relative_attention", False)
self.talking_head = getattr(config, "talking_head", False)
if self.talking_head:
self.head_logits_proj = keras.layers.Dense(
self.num_attention_heads,
kernel_initializer=get_initializer(config.initializer_range),
name="head_logits_proj",
use_bias=False,
)
self.head_weights_proj = keras.layers.Dense(
self.num_attention_heads,
kernel_initializer=get_initializer(config.initializer_range),
name="head_weights_proj",
use_bias=False,
)
self.softmax = TFDebertaXSoftmax(axis=-1)
if self.relative_attention:
self.max_relative_positions = getattr(config, "max_relative_positions", -1)
if self.max_relative_positions < 1:
self.max_relative_positions = config.max_position_embeddings
self.pos_dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="pos_dropout")
if "c2p" in self.pos_att_type:
self.pos_proj = keras.layers.Dense(
self.all_head_size,
kernel_initializer=get_initializer(config.initializer_range),
name="pos_proj",
use_bias=False,
)
if "p2c" in self.pos_att_type:
self.pos_q_proj = keras.layers.Dense(
self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="pos_q_proj"
)
self.dropout = TFDebertaStableDropout(config.attention_probs_dropout_prob, name="dropout")
self.config = config
def build(self, input_shape=None):
if self.built:
return
self.built = True
self.q_bias = self.add_weight(
name="q_bias", shape=(self.all_head_size), initializer=keras.initializers.Zeros()
)
self.v_bias = self.add_weight(
name="v_bias", shape=(self.all_head_size), initializer=keras.initializers.Zeros()
)
if getattr(self, "in_proj", None) is not None:
with tf.name_scope(self.in_proj.name):
self.in_proj.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "head_logits_proj", None) is not None:
with tf.name_scope(self.head_logits_proj.name):
self.head_logits_proj.build(None)
if getattr(self, "head_weights_proj", None) is not None:
with tf.name_scope(self.head_weights_proj.name):
self.head_weights_proj.build(None)
if getattr(self, "pos_dropout", None) is not None:
with tf.name_scope(self.pos_dropout.name):
self.pos_dropout.build(None)
if getattr(self, "pos_proj", None) is not None:
with tf.name_scope(self.pos_proj.name):
self.pos_proj.build([self.config.hidden_size])
if getattr(self, "pos_q_proj", None) is not None:
with tf.name_scope(self.pos_q_proj.name):
self.pos_q_proj.build([self.config.hidden_size])
def transpose_for_scores(self, tensor: tf.Tensor) -> tf.Tensor:
shape = shape_list(tensor)[:-1] + [self.num_attention_heads, -1]
# Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size]
tensor = tf.reshape(tensor=tensor, shape=shape)
# Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size]
return tf.transpose(tensor, perm=[0, 2, 1, 3])
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
"""
Call the module
Args:
hidden_states (`tf.Tensor`):
Input states to the module usually the output from previous layer, it will be the Q,K and V in
*Attention(Q,K,V)*
attention_mask (`tf.Tensor`):
An attention mask matrix of shape [*B*, *N*, *N*] where *B* is the batch size, *N* is the maximum
sequence length in which element [i,j] = *1* means the *i* th token in the input can attend to the *j*
th token.
return_att (`bool`, *optional*):
Whether return the attention matrix.
query_states (`tf.Tensor`, *optional*):
The *Q* state in *Attention(Q,K,V)*.
relative_pos (`tf.Tensor`):
The relative position encoding between the tokens in the sequence. It's of shape [*B*, *N*, *N*] with
values ranging in [*-max_relative_positions*, *max_relative_positions*].
rel_embeddings (`tf.Tensor`):
The embedding of relative distances. It's a tensor of shape [\\(2 \\times
\\text{max_relative_positions}\\), *hidden_size*].
"""
if query_states is None:
qp = self.in_proj(hidden_states) # .split(self.all_head_size, dim=-1)
query_layer, key_layer, value_layer = tf.split(
self.transpose_for_scores(qp), num_or_size_splits=3, axis=-1
)
else:
def linear(w, b, x):
out = tf.matmul(x, w, transpose_b=True)
if b is not None:
out += tf.transpose(b)
return out
ws = tf.split(
tf.transpose(self.in_proj.weight[0]), num_or_size_splits=self.num_attention_heads * 3, axis=0
)
qkvw = tf.TensorArray(dtype=self.dtype, size=3)
for k in tf.range(3):
qkvw_inside = tf.TensorArray(dtype=self.dtype, size=self.num_attention_heads)
for i in tf.range(self.num_attention_heads):
qkvw_inside = qkvw_inside.write(i, ws[i * 3 + k])
qkvw = qkvw.write(k, qkvw_inside.concat())
qkvb = [None] * 3
q = linear(qkvw[0], qkvb[0], query_states)
k = linear(qkvw[1], qkvb[1], hidden_states)
v = linear(qkvw[2], qkvb[2], hidden_states)
query_layer = self.transpose_for_scores(q)
key_layer = self.transpose_for_scores(k)
value_layer = self.transpose_for_scores(v)
query_layer = query_layer + self.transpose_for_scores(self.q_bias[None, None, :])
value_layer = value_layer + self.transpose_for_scores(self.v_bias[None, None, :])
rel_att = None
# Take the dot product between "query" and "key" to get the raw attention scores.
scale_factor = 1 + len(self.pos_att_type)
scale = math.sqrt(shape_list(query_layer)[-1] * scale_factor)
query_layer = query_layer / scale
attention_scores = tf.matmul(query_layer, tf.transpose(key_layer, [0, 1, 3, 2]))
if self.relative_attention:
rel_embeddings = self.pos_dropout(rel_embeddings, training=training)
rel_att = self.disentangled_att_bias(query_layer, key_layer, relative_pos, rel_embeddings, scale_factor)
if rel_att is not None:
attention_scores = attention_scores + rel_att
if self.talking_head:
attention_scores = tf.transpose(
self.head_logits_proj(tf.transpose(attention_scores, [0, 2, 3, 1])), [0, 3, 1, 2]
)
attention_probs = self.softmax(attention_scores, attention_mask)
attention_probs = self.dropout(attention_probs, training=training)
if self.talking_head:
attention_probs = tf.transpose(
self.head_weights_proj(tf.transpose(attention_probs, [0, 2, 3, 1])), [0, 3, 1, 2]
)
context_layer = tf.matmul(attention_probs, value_layer)
context_layer = tf.transpose(context_layer, [0, 2, 1, 3])
context_layer_shape = shape_list(context_layer)
# Set the final dimension here explicitly.
# Calling tf.reshape(context_layer, (*context_layer_shape[:-2], -1)) raises an error when executing
# the model in graph mode as context_layer is reshaped to (None, 7, None) and Dense layer in TFDebertaV2SelfOutput
# requires final input dimension to be defined
new_context_layer_shape = context_layer_shape[:-2] + [context_layer_shape[-2] * context_layer_shape[-1]]
context_layer = tf.reshape(context_layer, new_context_layer_shape)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
return outputs
def disentangled_att_bias(self, query_layer, key_layer, relative_pos, rel_embeddings, scale_factor):
if relative_pos is None:
q = shape_list(query_layer)[-2]
relative_pos = build_relative_position(q, shape_list(key_layer)[-2])
shape_list_pos = shape_list(relative_pos)
if len(shape_list_pos) == 2:
relative_pos = tf.expand_dims(tf.expand_dims(relative_pos, 0), 0)
elif len(shape_list_pos) == 3:
relative_pos = tf.expand_dims(relative_pos, 1)
# bxhxqxk
elif len(shape_list_pos) != 4:
raise ValueError(f"Relative position ids must be of dim 2 or 3 or 4. {len(shape_list_pos)}")
att_span = tf.cast(
tf.minimum(
tf.maximum(shape_list(query_layer)[-2], shape_list(key_layer)[-2]), self.max_relative_positions
),
tf.int64,
)
rel_embeddings = tf.expand_dims(
rel_embeddings[self.max_relative_positions - att_span : self.max_relative_positions + att_span, :], 0
)
score = 0
# content->position
if "c2p" in self.pos_att_type:
pos_key_layer = self.pos_proj(rel_embeddings)
pos_key_layer = self.transpose_for_scores(pos_key_layer)
c2p_att = tf.matmul(query_layer, tf.transpose(pos_key_layer, [0, 1, 3, 2]))
c2p_pos = tf.clip_by_value(relative_pos + att_span, 0, att_span * 2 - 1)
c2p_att = torch_gather(c2p_att, c2p_dynamic_expand(c2p_pos, query_layer, relative_pos), -1)
score += c2p_att
# position->content
if "p2c" in self.pos_att_type:
pos_query_layer = self.pos_q_proj(rel_embeddings)
pos_query_layer = self.transpose_for_scores(pos_query_layer)
pos_query_layer /= tf.math.sqrt(
tf.cast(shape_list(pos_query_layer)[-1] * scale_factor, dtype=self.compute_dtype)
)
if shape_list(query_layer)[-2] != shape_list(key_layer)[-2]:
r_pos = build_relative_position(shape_list(key_layer)[-2], shape_list(key_layer)[-2])
else:
r_pos = relative_pos
p2c_pos = tf.clip_by_value(-r_pos + att_span, 0, att_span * 2 - 1)
p2c_att = tf.matmul(key_layer, tf.transpose(pos_query_layer, [0, 1, 3, 2]))
p2c_att = tf.transpose(
torch_gather(p2c_att, p2c_dynamic_expand(p2c_pos, query_layer, key_layer), -1), [0, 1, 3, 2]
)
if shape_list(query_layer)[-2] != shape_list(key_layer)[-2]:
pos_index = tf.expand_dims(relative_pos[:, :, :, 0], -1)
p2c_att = torch_gather(p2c_att, pos_dynamic_expand(pos_index, p2c_att, key_layer), -2)
score += p2c_att
return score
class TFDebertaEmbeddings(keras.layers.Layer):
"""Construct the embeddings from word, position and token_type embeddings."""
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.hidden_size = config.hidden_size
self.max_position_embeddings = config.max_position_embeddings
self.position_biased_input = getattr(config, "position_biased_input", True)
self.initializer_range = config.initializer_range
if self.embedding_size != config.hidden_size:
self.embed_proj = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="embed_proj",
use_bias=False,
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
def build(self, input_shape=None):
with tf.name_scope("word_embeddings"):
self.weight = self.add_weight(
name="weight",
shape=[self.config.vocab_size, self.embedding_size],
initializer=get_initializer(self.initializer_range),
)
with tf.name_scope("token_type_embeddings"):
if self.config.type_vocab_size > 0:
self.token_type_embeddings = self.add_weight(
name="embeddings",
shape=[self.config.type_vocab_size, self.embedding_size],
initializer=get_initializer(self.initializer_range),
)
else:
self.token_type_embeddings = None
with tf.name_scope("position_embeddings"):
if self.position_biased_input:
self.position_embeddings = self.add_weight(
name="embeddings",
shape=[self.max_position_embeddings, self.hidden_size],
initializer=get_initializer(self.initializer_range),
)
else:
self.position_embeddings = None
if self.built:
return
self.built = True
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "embed_proj", None) is not None:
with tf.name_scope(self.embed_proj.name):
self.embed_proj.build([None, None, self.embedding_size])
def call(
self,
input_ids: tf.Tensor = None,
position_ids: tf.Tensor = None,
token_type_ids: tf.Tensor = None,
inputs_embeds: tf.Tensor = None,
mask: tf.Tensor = None,
training: bool = False,
) -> tf.Tensor:
"""
Applies embedding based on inputs tensor.
Returns:
final_embeddings (`tf.Tensor`): output embedding tensor.
"""
if input_ids is None and inputs_embeds is None:
raise ValueError("Need to provide either `input_ids` or `input_embeds`.")
if input_ids is not None:
check_embeddings_within_bounds(input_ids, self.config.vocab_size)
inputs_embeds = tf.gather(params=self.weight, indices=input_ids)
input_shape = shape_list(inputs_embeds)[:-1]
if token_type_ids is None:
token_type_ids = tf.fill(dims=input_shape, value=0)
if position_ids is None:
position_ids = tf.expand_dims(tf.range(start=0, limit=input_shape[-1]), axis=0)
final_embeddings = inputs_embeds
if self.position_biased_input:
position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids)
final_embeddings += position_embeds
if self.config.type_vocab_size > 0:
token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids)
final_embeddings += token_type_embeds
if self.embedding_size != self.hidden_size:
final_embeddings = self.embed_proj(final_embeddings)
final_embeddings = self.LayerNorm(final_embeddings)
if mask is not None:
if len(shape_list(mask)) != len(shape_list(final_embeddings)):
if len(shape_list(mask)) == 4:
mask = tf.squeeze(tf.squeeze(mask, axis=1), axis=1)
mask = tf.cast(tf.expand_dims(mask, axis=2), dtype=self.compute_dtype)
final_embeddings = final_embeddings * mask
final_embeddings = self.dropout(final_embeddings, training=training)
return final_embeddings
class TFDebertaPredictionHeadTransform(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.dense = keras.layers.Dense(
units=self.embedding_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
if isinstance(config.hidden_act, str):
self.transform_act_fn = get_tf_activation(config.hidden_act)
else:
self.transform_act_fn = config.hidden_act
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.transform_act_fn(hidden_states)
hidden_states = self.LayerNorm(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.embedding_size])
class TFDebertaLMPredictionHead(keras.layers.Layer):
def __init__(self, config: DebertaConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.transform = TFDebertaPredictionHeadTransform(config, name="transform")
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.input_embeddings = input_embeddings
def build(self, input_shape=None):
self.bias = self.add_weight(shape=(self.config.vocab_size,), initializer="zeros", trainable=True, name="bias")
if self.built:
return
self.built = True
if getattr(self, "transform", None) is not None:
with tf.name_scope(self.transform.name):
self.transform.build(None)
def get_output_embeddings(self) -> keras.layers.Layer:
return self.input_embeddings
def set_output_embeddings(self, value: tf.Variable):
self.input_embeddings.weight = value
self.input_embeddings.vocab_size = shape_list(value)[0]
def get_bias(self) -> Dict[str, tf.Variable]:
return {"bias": self.bias}
def set_bias(self, value: tf.Variable):
self.bias = value["bias"]
self.config.vocab_size = shape_list(value["bias"])[0]
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.transform(hidden_states=hidden_states)
seq_length = shape_list(hidden_states)[1]
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.embedding_size])
hidden_states = tf.matmul(a=hidden_states, b=self.input_embeddings.weight, transpose_b=True)
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.config.vocab_size])
hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias)
return hidden_states
class TFDebertaOnlyMLMHead(keras.layers.Layer):
def __init__(self, config: DebertaConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.predictions = TFDebertaLMPredictionHead(config, input_embeddings, name="predictions")
def call(self, sequence_output: tf.Tensor) -> tf.Tensor:
prediction_scores = self.predictions(hidden_states=sequence_output)
return prediction_scores
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "predictions", None) is not None:
with tf.name_scope(self.predictions.name):
self.predictions.build(None)
# @keras_serializable
class TFDebertaMainLayer(keras.layers.Layer):
config_class = DebertaConfig
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embeddings = TFDebertaEmbeddings(config, name="embeddings")
self.encoder = TFDebertaEncoder(config, name="encoder")
def get_input_embeddings(self) -> keras.layers.Layer:
return self.embeddings
def set_input_embeddings(self, value: tf.Variable):
self.embeddings.weight = value
self.embeddings.vocab_size = shape_list(value)[0]
def _prune_heads(self, heads_to_prune):
"""
Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
class PreTrainedModel
"""
raise NotImplementedError
@unpack_inputs
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: bool = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
input_shape = shape_list(input_ids)
elif inputs_embeds is not None:
input_shape = shape_list(inputs_embeds)[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if attention_mask is None:
attention_mask = tf.fill(dims=input_shape, value=1)
if token_type_ids is None:
token_type_ids = tf.fill(dims=input_shape, value=0)
embedding_output = self.embeddings(
input_ids=input_ids,
position_ids=position_ids,
token_type_ids=token_type_ids,
inputs_embeds=inputs_embeds,
mask=attention_mask,
training=training,
)
encoder_outputs = self.encoder(
hidden_states=embedding_output,
attention_mask=attention_mask,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = encoder_outputs[0]
if not return_dict:
return (sequence_output,) + encoder_outputs[1:]
return TFBaseModelOutput(
last_hidden_state=sequence_output,
hidden_states=encoder_outputs.hidden_states,
attentions=encoder_outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "embeddings", None) is not None:
with tf.name_scope(self.embeddings.name):
self.embeddings.build(None)
if getattr(self, "encoder", None) is not None:
with tf.name_scope(self.encoder.name):
self.encoder.build(None)
class TFDebertaPreTrainedModel(TFPreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = DebertaConfig
base_model_prefix = "deberta"
DEBERTA_START_DOCSTRING = r"""
The DeBERTa model was proposed in [DeBERTa: Decoding-enhanced BERT with Disentangled
Attention](https://arxiv.org/abs/2006.03654) by Pengcheng He, Xiaodong Liu, Jianfeng Gao, Weizhu Chen. It's build
on top of BERT/RoBERTa with two improvements, i.e. disentangled attention and enhanced mask decoder. With those two
improvements, it out perform BERT/RoBERTa on a majority of tasks with 80GB pretraining data.
This model is also a [keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it
as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and
behavior.
<Tip>
TensorFlow models and layers in `transformers` accept two formats as input:
- having all inputs as keyword arguments (like PyTorch models), or
- having all inputs as a list, tuple or dict in the first positional argument.
The reason the second format is supported is that Keras methods prefer this format when passing inputs to models
and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just
pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second
format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with
the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first
positional argument:
- a single Tensor with `input_ids` only and nothing else: `model(input_ids)`
- a list of varying length with one or several input Tensors IN THE ORDER given in the docstring:
`model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])`
- a dictionary with one or several input Tensors associated to the input names given in the docstring:
`model({"input_ids": input_ids, "token_type_ids": token_type_ids})`
Note that when creating models and layers with
[subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry
about any of this, as you can just pass inputs like you would to any other Python function!
</Tip>
Parameters:
config ([`DebertaConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
DEBERTA_INPUTS_DOCSTRING = r"""
Args:
input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`):
Indices of input sequence tokens in the vocabulary.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,
1]`:
- 0 corresponds to a *sentence A* token,
- 1 corresponds to a *sentence B* token.
[What are token type IDs?](../glossary#token-type-ids)
position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
config.max_position_embeddings - 1]`.
[What are position IDs?](../glossary#position-ids)
inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
is useful if you want more control over how to convert *input_ids* indices into associated vectors than the
model's internal embedding lookup matrix.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput``] instead of a plain tuple.
"""
@add_start_docstrings(
"The bare DeBERTa Model transformer outputting raw hidden-states without any specific head on top.",
DEBERTA_START_DOCSTRING,
)
class TFDebertaModel(TFDebertaPreTrainedModel):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.deberta = TFDebertaMainLayer(config, name="deberta")
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFBaseModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: Optional[bool] = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
@add_start_docstrings("""DeBERTa Model with a `language modeling` head on top.""", DEBERTA_START_DOCSTRING)
class TFDebertaForMaskedLM(TFDebertaPreTrainedModel, TFMaskedLanguageModelingLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
if config.is_decoder:
logger.warning(
"If you want to use `TFDebertaForMaskedLM` make sure `config.is_decoder=False` for "
"bi-directional self-attention."
)
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.mlm = TFDebertaOnlyMLMHead(config, input_embeddings=self.deberta.embeddings, name="cls")
def get_lm_head(self) -> keras.layers.Layer:
return self.mlm.predictions
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFMaskedLMOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ...,
config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the
loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
prediction_scores = self.mlm(sequence_output=sequence_output, training=training)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores)
if not return_dict:
output = (prediction_scores,) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return TFMaskedLMOutput(
loss=loss,
logits=prediction_scores,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "mlm", None) is not None:
with tf.name_scope(self.mlm.name):
self.mlm.build(None)
@add_start_docstrings(
"""
DeBERTa Model transformer with a sequence classification/regression head on top (a linear layer on top of the
pooled output) e.g. for GLUE tasks.
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForSequenceClassification(TFDebertaPreTrainedModel, TFSequenceClassificationLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.pooler = TFDebertaContextPooler(config, name="pooler")
drop_out = getattr(config, "cls_dropout", None)
drop_out = self.config.hidden_dropout_prob if drop_out is None else drop_out
self.dropout = TFDebertaStableDropout(drop_out, name="cls_dropout")
self.classifier = keras.layers.Dense(
units=config.num_labels,
kernel_initializer=get_initializer(config.initializer_range),
name="classifier",
)
self.output_dim = self.pooler.output_dim
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFSequenceClassifierOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
pooled_output = self.pooler(sequence_output, training=training)
pooled_output = self.dropout(pooled_output, training=training)
logits = self.classifier(pooled_output)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits)
if not return_dict:
output = (logits,) + outputs[1:]
return ((loss,) + output) if loss is not None else output
return TFSequenceClassifierOutput(
loss=loss,
logits=logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "pooler", None) is not None:
with tf.name_scope(self.pooler.name):
self.pooler.build(None)
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "classifier", None) is not None:
with tf.name_scope(self.classifier.name):
self.classifier.build([None, None, self.output_dim])
@add_start_docstrings(
"""
DeBERTa Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for
Named-Entity-Recognition (NER) tasks.
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForTokenClassification(TFDebertaPreTrainedModel, TFTokenClassificationLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.dropout = keras.layers.Dropout(rate=config.hidden_dropout_prob)
self.classifier = keras.layers.Dense(
units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier"
)
self.config = config
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFTokenClassifierOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`.
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
sequence_output = self.dropout(sequence_output, training=training)
logits = self.classifier(inputs=sequence_output)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits)
if not return_dict:
output = (logits,) + outputs[1:]
return ((loss,) + output) if loss is not None else output
return TFTokenClassifierOutput(
loss=loss,
logits=logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "classifier", None) is not None:
with tf.name_scope(self.classifier.name):
self.classifier.build([None, None, self.config.hidden_size])
@add_start_docstrings(
"""
DeBERTa Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear
layers on top of the hidden-states output to compute `span start logits` and `span end logits`).
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForQuestionAnswering(TFDebertaPreTrainedModel, TFQuestionAnsweringLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.qa_outputs = keras.layers.Dense(
units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs"
)
self.config = config
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFQuestionAnsweringModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
start_positions: np.ndarray | tf.Tensor | None = None,
end_positions: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]:
r"""
start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for position (index) of the start of the labelled span for computing the token classification loss.
Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
are not taken into account for computing the loss.
end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for position (index) of the end of the labelled span for computing the token classification loss.
Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
are not taken into account for computing the loss.
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
logits = self.qa_outputs(inputs=sequence_output)
start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1)
start_logits = tf.squeeze(input=start_logits, axis=-1)
end_logits = tf.squeeze(input=end_logits, axis=-1)
loss = None
if start_positions is not None and end_positions is not None:
labels = {"start_position": start_positions}
labels["end_position"] = end_positions
loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits))
if not return_dict:
output = (start_logits, end_logits) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return TFQuestionAnsweringModelOutput(
loss=loss,
start_logits=start_logits,
end_logits=end_logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "qa_outputs", None) is not None:
with tf.name_scope(self.qa_outputs.name):
self.qa_outputs.build([None, None, self.config.hidden_size])
|
transformers/src/transformers/models/deberta/modeling_tf_deberta.py/0
|
{
"file_path": "transformers/src/transformers/models/deberta/modeling_tf_deberta.py",
"repo_id": "transformers",
"token_count": 30781
}
| 345
|
# coding=utf-8
# Copyright 2023 Toshiyuki Sakamoto(tanreinama) and HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch GPTSANJapanese model."""
import copy
from typing import List, Optional, Tuple, Union
import torch
import torch.nn as nn
from ....activations import ACT2FN
from ....modeling_outputs import MoECausalLMOutputWithPast, MoEModelOutputWithPastAndCrossAttentions
from ....modeling_utils import PreTrainedModel
from ....utils import (
DUMMY_INPUTS,
DUMMY_MASK,
add_start_docstrings,
add_start_docstrings_to_model_forward,
is_torch_fx_proxy,
logging,
)
from .configuration_gptsan_japanese import GPTSanJapaneseConfig
logger = logging.get_logger(__name__)
_CONFIG_FOR_DOC = "GPTSanJapaneseConfig"
_CHECKPOINT_FOR_DOC = "Tanrei/GPTSAN-japanese"
####################################################
# This dict contains ids and associated url
# for the pretrained weights provided with the models
####################################################
def router_z_loss_func(router_logits: torch.Tensor) -> float:
r"""
Compute the router z-loss implemented in PyTorch.
The router z-loss was introduced in [Designing Effective Sparse Expert Models](https://arxiv.org/abs/2202.08906).
It encourages router logits to remain small in an effort to improve stability.
Args:
router_logits (`float`):
Input logits of shape [batch_size, sequence_length, num_experts]
Returns:
Scalar router z-loss.
"""
num_groups, tokens_per_group, _ = router_logits.shape
log_z = torch.logsumexp(router_logits, dim=-1)
z_loss = log_z**2
return torch.sum(z_loss) / (num_groups * tokens_per_group)
def load_balancing_loss_func(router_probs: torch.Tensor, expert_indices: torch.Tensor) -> float:
r"""
Computes auxiliary load balancing loss as in Switch Transformer - implemented in Pytorch.
See Switch Transformer (https://arxiv.org/abs/2101.03961) for more details. This function implements the loss
function presented in equations (4) - (6) of the paper. It aims at penalizing cases where the routing between
experts is too unbalanced.
Args:
router_probs (`torch.Tensor`):
Probability assigned to each expert per token. Shape: [batch_size, seqeunce_length, num_experts].
expert_indices (`torch.Tensor`):
Indices tensor of shape [batch_size, seqeunce_length] identifying the selected expert for a given token.
Returns:
The auxiliary loss.
"""
num_experts = router_probs.shape[-1]
# cast the expert indices to int64, otherwise one-hot encoding will fail
if expert_indices.dtype != torch.int64:
expert_indices = expert_indices.to(torch.int64)
if len(expert_indices.shape) == 2:
expert_indices = expert_indices.unsqueeze(2)
expert_mask = torch.nn.functional.one_hot(expert_indices, num_experts)
# For a given token, determine if it was routed to a given expert.
expert_mask = torch.max(expert_mask, axis=-2).values
# cast to float32 otherwise mean will fail
expert_mask = expert_mask.to(torch.float32)
tokens_per_group_and_expert = torch.mean(expert_mask, axis=-2)
router_prob_per_group_and_expert = torch.mean(router_probs, axis=-2)
return torch.mean(tokens_per_group_and_expert * router_prob_per_group_and_expert) * (num_experts**2)
class GPTSanJapaneseDenseActDense(nn.Module):
"""
FFN Layer for Switch Transformer and Extra layers
GPTSAN can mix Switch Transformer layers and normal Transformer layers This class is used as Expert in Switch
Transformer layers and as FFN in regular Transformer layers. RELU is used in the Switch Transformer layer, and
Swish is used in the normal Transformer layer, so there is a choice of which is used in the argument.
"""
def __init__(self, config: GPTSanJapaneseConfig, ext_layer=False):
super().__init__()
d_inter = config.d_ext if ext_layer else config.d_ff
self.wi = nn.Linear(config.d_model, d_inter, bias=ext_layer)
self.wo = nn.Linear(d_inter, config.d_model, bias=ext_layer)
self.dropout = nn.Identity() if ext_layer else nn.Dropout(config.dropout_rate)
self.act = ACT2FN["swish" if ext_layer else "relu"]
def forward(self, hidden_states):
r"""
Args:
hidden_states (`torch.Tensor`) :
[num_groups, tokens_per_group, hidden_dim] inputs to send to experts.
Returns:
torch.Tensor[num_groups, tokens_per_group, hidden_dim]
"""
hidden_states = self.wi(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.wo(hidden_states)
return hidden_states
class GPTSanJapaneseTop1Router(nn.Module):
"""
Router using tokens choose top-1 experts assignment.
This router uses the same mechanism as in Switch Transformer (https://arxiv.org/abs/2101.03961) and V-MoE
(https://arxiv.org/abs/2106.05974): tokens choose their top experts. Items are sorted by router_probs and then
routed to their choice of expert until the expert's expert_capacity is reached. **There is no guarantee that each
token is processed by an expert**, or that each expert receives at least one token.
"""
def __init__(self, config: GPTSanJapaneseConfig):
super().__init__()
self.num_experts = config.num_experts
self.expert_capacity = config.expert_capacity
self.classifier = nn.Linear(config.hidden_size, self.num_experts, bias=config.router_bias)
self.jitter_noise = config.router_jitter_noise
self.ignore_padding_tokens = config.router_ignore_padding_tokens
self.dtype = getattr(torch, config.router_dtype)
def _compute_router_probabilities(self, hidden_states: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]:
r"""
Computes router probabilities from input hidden states.
Args:
hidden_states (`torch.Tensor`):
(batch_size, sequence_length, hidden_dim) from which router probabilities are computed.
Returns:
router_probabilities (`torch.Tensor`):
Tensor of shape (batch_size, sequence_length, num_experts) corresponding to the probabilities for each
token and expert. Used for routing tokens to experts.
router_logits (`torch.Tensor`):
Logits tensor of shape (batch_size, sequence_length, num_experts) corresponding to raw router logits.
This is used later for computing router z-loss.
"""
# float32 is used to ensure stability. See the discussion of "selective precision" in
# https://arxiv.org/abs/2101.03961.
# We also store the previous dtype to cast back the output to the previous dtype
self.input_dtype = hidden_states.dtype
hidden_states = hidden_states.to(self.dtype)
if self.training and self.jitter_noise > 0:
# Multiply the token inputs by the uniform distribution - adding some noise
hidden_states *= torch.empty_like(hidden_states).uniform_(1.0 - self.jitter_noise, 1.0 + self.jitter_noise)
# Shape: [num_groups, tokens_per_group, num_experts]
self._cast_classifier()
router_logits = self.classifier(hidden_states)
# Apply Softmax and cast back to the original `dtype`
router_probabilities = nn.functional.softmax(router_logits, dim=-1, dtype=self.dtype).to(self.input_dtype)
return router_probabilities, router_logits
def _cast_classifier(self):
r"""
`bitsandbytes` `Linear8bitLt` layers does not support manual casting Therefore we need to check if they are an
instance of the `Linear8bitLt` class by checking special attributes.
"""
if not (hasattr(self.classifier, "SCB") or hasattr(self.classifier, "CB")):
self.classifier = self.classifier.to(self.dtype)
def forward(self, hidden_states: torch.Tensor) -> Tuple:
r"""
Generic forward function for every Router class. Each Router expects to have the same input hidden states
(`hidden_states`) corresponding to the hidden states for each token, the `expert_capacity` corresponding to the
number of tokens the Router will send to each expert, some Routers can send up to few tokens to each expert.
Each Router works as the following: it expects the hidden states for each token, gets the `router_probs` and
`router_logits` from the `router_weights`. This will assign for each token, the raw probability to be assigned
to an expert. Then each Router class will have to define its own `_compute_routing_instructions`.
Args:
hidden_states (`torch.Tensor`) :
[num_groups, tokens_per_group, hidden_dim] inputs to send to experts.
Returns:
Tuple[`torch.Tensor`, `torch.Tensor`, `torch.Tensor`] Tuple containing the expert index, the router probs
and the router logits. The router probabilities and logits are required to compute the loss.
"""
router_probs, router_logits = self._compute_router_probabilities(hidden_states)
expert_index = torch.argmax(router_probs, dim=-1)
expert_index = torch.nn.functional.one_hot(expert_index, num_classes=self.num_experts)
# Mask tokens outside expert capacity. Sum over each sequence
token_priority = torch.cumsum(expert_index, dim=-2)
# mask if the token routed to to the expert will overflow
expert_capacity_mask = token_priority <= self.expert_capacity
expert_index = expert_index * expert_capacity_mask
router_probs = torch.max(router_probs, dim=-1).values.unsqueeze(-1)
return expert_index, router_probs, router_logits
class GPTSanJapaneseSparseMLP(nn.Module):
r"""
Implementation of the Switch Transformers Sparse MLP module.
"""
def __init__(self, config: GPTSanJapaneseConfig, expert_class: nn.Module = GPTSanJapaneseDenseActDense):
super().__init__()
# Step 1: Get the correct router according to its class
self.router = GPTSanJapaneseTop1Router(config)
# Step 2: Get the experts
self.experts = nn.ModuleDict()
for idx in range(config.num_experts):
self.experts[f"expert_{idx}"] = expert_class(config)
def forward(self, hidden_states):
r"""
Hold on, this will be slightly tricky to understand In the correct order, a MoE layer does the following:
1- Gets the `router_mask` from the router. The shape of the mask is `(batch_size, sequence_length, num_expert)`
and corresponds to the argmax of the `router_probs`. The probabilities are needed in the computation of the
hidden states : they are broadcasted to the hidden states values (can be interpreted as a scaling factor).
2- Dispatch the tokens to its associated experts. We do a classic for loop over the experts and assign for each
expert the corresponding hidden states.
"""
# Step 1: Get the router_mask from the router as wel as the probabilities
router_mask, router_probs, router_logits = self.router(hidden_states)
expert_index = torch.argmax(router_mask, dim=-1)
# The routers introduced might not always map all the tokens, to a router, which means that some hidden states
# can be unchanged from one layer to another. That is why the hidden states are cloned before updating only the seleced ones.
next_states = hidden_states.clone()
for idx, expert in enumerate(self.experts.values()):
token_indices = router_mask[:, :, idx].bool()
next_states[token_indices] = expert(hidden_states[token_indices]).to(next_states.dtype)
hidden_states = router_probs * next_states
return hidden_states, (router_logits, expert_index)
class GPTSanJapaneseLayerSparseFF(nn.Module):
r"""
Switch Transformers Feed Forward layer module. This is a wrapper around the Mixture of Experts module.
Parameters:
config : ([`GPTSanJapaneseConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
def __init__(self, config: GPTSanJapaneseConfig):
super().__init__()
self.mlp = GPTSanJapaneseSparseMLP(config)
self.soft_bypass_mlp = nn.Linear(config.d_model, config.d_model, bias=False)
self.norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_epsilon)
def forward(self, hidden_states, output_router_logits):
r"""
Args:
hidden_states (`torch.Tensor`) :
[num_groups, tokens_per_group, hidden_dim] inputs to send to experts.
output_router_logits (`bool`) :
output experts router output.
Returns:
torch.Tensor[num_groups, tokens_per_group, hidden_dim]
"""
forwarded_states, router_tuple = self.mlp(hidden_states)
forwarded_states += torch.tanh(self.soft_bypass_mlp(hidden_states))
output = hidden_states + self.norm(forwarded_states)
if output_router_logits and router_tuple is not None:
return output, router_tuple
else:
return output
class GPTSanJapaneseLayerDenseFF(nn.Module):
r"""
Extra Transformers Feed Forward layer module.
Parameters:
config : ([`GPTSanJapaneseConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
def __init__(self, config: GPTSanJapaneseConfig):
super().__init__()
# Check if it is a sparse layer, if not then it is a dense layer
self.mlp = GPTSanJapaneseDenseActDense(config, ext_layer=True)
self.norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_epsilon)
def forward(self, hidden_states):
r"""
Args:
hidden_states (`torch.Tensor`) :
[num_groups, tokens_per_group, hidden_dim] inputs to send to experts.
Returns:
torch.Tensor[num_groups, tokens_per_group, hidden_dim]
"""
forwarded_states = self.mlp(hidden_states)
output = hidden_states + self.norm(forwarded_states)
return output
class GPTSanJapaneseAttention(nn.Module):
"""Multi-headed attention from 'Attention Is All You Need' paper"""
def __init__(
self,
embed_dim: int,
num_heads: int,
dropout: float = 0.0,
is_decoder: bool = False,
bias: bool = True,
is_causal: bool = False,
config: Optional[GPTSanJapaneseConfig] = None,
):
super().__init__()
self.embed_dim = embed_dim
self.num_heads = num_heads
self.dropout = dropout
self.head_dim = embed_dim // num_heads
self.config = config
if (self.head_dim * num_heads) != self.embed_dim:
raise ValueError(
f"embed_dim must be divisible by num_heads (got `embed_dim`: {self.embed_dim}"
f" and `num_heads`: {num_heads})."
)
self.scaling = self.head_dim**-0.5
self.is_decoder = is_decoder
self.is_causal = is_causal
self.k_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.v_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.q_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
self.out_proj = nn.Linear(embed_dim, embed_dim, bias=bias)
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
def forward(
self,
hidden_states: torch.Tensor,
key_value_states: Optional[torch.Tensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.Tensor] = None,
layer_head_mask: Optional[torch.Tensor] = None,
output_attentions: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
"""Input shape: Batch x Time x Channel"""
# if key_value_states are provided this layer is used as a cross-attention layer
# for the decoder
is_cross_attention = key_value_states is not None
bsz, tgt_len, _ = hidden_states.size()
# get query proj
query_states = self.q_proj(hidden_states) * self.scaling
# get key, value proj
# `past_key_value[0].shape[2] == key_value_states.shape[1]`
# is checking that the `sequence_length` of the `past_key_value` is the same as
# the provided `key_value_states` to support prefix tuning
if (
is_cross_attention
and past_key_value is not None
and past_key_value[0].shape[2] == key_value_states.shape[1]
):
# reuse k,v, cross_attentions
key_states = past_key_value[0]
value_states = past_key_value[1]
elif is_cross_attention:
# cross_attentions
key_states = self._shape(self.k_proj(key_value_states), -1, bsz)
value_states = self._shape(self.v_proj(key_value_states), -1, bsz)
elif past_key_value is not None:
# reuse k, v, self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
key_states = torch.cat([past_key_value[0], key_states], dim=2)
value_states = torch.cat([past_key_value[1], value_states], dim=2)
else:
# self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
if self.is_decoder:
# if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states.
# Further calls to cross_attention layer can then reuse all cross-attention
# key/value_states (first "if" case)
# if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of
# all previous decoder key/value_states. Further calls to uni-directional self-attention
# can concat previous decoder key/value_states to current projected key/value_states (third "elif" case)
# if encoder bi-directional self-attention `past_key_value` is always `None`
past_key_value = (key_states, value_states)
proj_shape = (bsz * self.num_heads, -1, self.head_dim)
query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape)
key_states = key_states.reshape(*proj_shape)
value_states = value_states.reshape(*proj_shape)
src_len = key_states.size(1)
attn_weights = torch.bmm(query_states, key_states.transpose(1, 2))
if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len):
raise ValueError(
f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is"
f" {attn_weights.size()}"
)
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, tgt_len, src_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}"
)
attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
attn_weights = nn.functional.softmax(attn_weights, dim=-1)
if layer_head_mask is not None:
if layer_head_mask.size() != (self.num_heads,):
raise ValueError(
f"Head mask for a single layer should be of size {(self.num_heads,)}, but is"
f" {layer_head_mask.size()}"
)
attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
if output_attentions:
# this operation is a bit awkward, but it's required to
# make sure that attn_weights keeps its gradient.
# In order to do so, attn_weights have to be reshaped
# twice and have to be reused in the following
attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len)
else:
attn_weights_reshaped = None
attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training)
attn_output = torch.bmm(attn_probs, value_states)
if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz * self.num_heads, tgt_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim)
attn_output = attn_output.transpose(1, 2)
# Use the `embed_dim` from the config (stored in the class) rather than `hidden_state` because `attn_output` can be
# partitioned across GPUs when using tensor-parallelism.
attn_output = attn_output.reshape(bsz, tgt_len, self.embed_dim)
attn_output = self.out_proj(attn_output)
return attn_output, attn_weights_reshaped, past_key_value
class GPTSanJapaneseLayerSelfAttention(nn.Module):
"""
Self Attention and Normalization Unit
"""
def __init__(self, config, has_relative_attention_bias=False):
super().__init__()
self.self_attn = GPTSanJapaneseAttention(
embed_dim=config.d_model,
num_heads=config.num_heads,
is_decoder=True,
bias=has_relative_attention_bias,
)
self.norm = nn.LayerNorm(config.d_model, eps=config.layer_norm_epsilon)
def forward(
self,
hidden_states: Optional[Tuple[torch.FloatTensor]],
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = False,
output_attentions: Optional[bool] = False,
) -> Tuple[Union[torch.Tensor, Tuple[torch.Tensor]], ...]:
r"""
Self-attention and normalize block.
Args:
hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention
if the model is configured as a decoder.
past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up
decoding. If `past_key_values` are used, the user can optionally input only the last
`decoder_input_ids` (those that don't have their past key value states given to this model) of shape
`(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`.
attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used
in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
head_mask (`numpy.ndarray` of shape `({0})`, `optional):
Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
(see `past_key_values`).
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
Returns:
Tuple[torch.Tensor[num_groups, tokens_per_group, hidden_dim],...]
"""
# Self Attention
# decoder uni-directional self-attention cached key/values tuple is at positions 1,2
self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None
# add present self-attn cache to positions 1,2 of present_key_value tuple
atten_out = self.self_attn(
hidden_states=hidden_states,
past_key_value=self_attn_past_key_value,
attention_mask=(1 - attention_mask) * torch.finfo(hidden_states.dtype).min,
layer_head_mask=head_mask,
output_attentions=output_attentions,
)
if output_attentions:
attn_weights = (atten_out[1],)
else:
attn_weights = ()
attention_output = atten_out[0]
hidden = hidden_states + self.norm(attention_output)
if use_cache:
outputs = (hidden, atten_out[2]) # hidden, present, (attentions)
else:
outputs = (hidden,) # hidden, (attentions)
return outputs + attn_weights
class GPTSanJapaneseBlock(nn.Module):
"""
Self Attention and FFN Unit
"""
def __init__(self, config, ext_layer=False):
super().__init__()
self.self_attn = GPTSanJapaneseLayerSelfAttention(config)
self.feed_forward = GPTSanJapaneseLayerDenseFF(config) if ext_layer else GPTSanJapaneseLayerSparseFF(config)
def forward(
self,
hidden_states: Optional[Tuple[torch.FloatTensor]],
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = False,
output_attentions: Optional[bool] = False,
output_router_tuple: Optional[bool] = False,
) -> Tuple[Union[torch.Tensor, Tuple[torch.Tensor]], ...]:
r"""
GPTSAN transformer block.
Args:
hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention
if the model is configured as a decoder.
past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up
decoding. If `past_key_values` are used, the user can optionally input only the last
`decoder_input_ids` (those that don't have their past key value states given to this model) of shape
`(batch_size, 1)` instead of all `decoder_input_ids` of shape `(batch_size, sequence_length)`.
attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used
in the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
head_mask (`numpy.ndarray` of shape `({0})`, `optional):
Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
(see `past_key_values`).
output_attentions (`bool`) :
output attention probabirities.
output_router_tuple:
output experts router logits and expert id.
Returns:
Tuple[torch.Tensor[num_groups, tokens_per_group, hidden_dim],...]
"""
atten_out = self.self_attn(
hidden_states=hidden_states,
past_key_value=past_key_value,
attention_mask=attention_mask,
head_mask=head_mask,
use_cache=use_cache,
output_attentions=output_attentions,
)
attention_output = atten_out[0]
if isinstance(self.feed_forward, GPTSanJapaneseLayerSparseFF):
sparse_out = self.feed_forward(attention_output, output_router_tuple)
if output_router_tuple:
hidden, router_tuple = sparse_out
else:
hidden = sparse_out
else:
hidden = self.feed_forward(attention_output)
outputs = (hidden,) + atten_out[1:]
if isinstance(self.feed_forward, GPTSanJapaneseLayerSparseFF) and output_router_tuple:
outputs += (router_tuple,)
return outputs
class GPTSanJapanesePreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = GPTSanJapaneseConfig
base_model_prefix = "gptsan_japanese"
supports_gradient_checkpointing = False
_no_split_modules = ["GPTSanJapaneseBlock"]
_skip_keys_device_placement = "past_key_values"
@property
def dummy_inputs(self):
input_ids = torch.tensor(DUMMY_INPUTS)
input_mask = torch.tensor(DUMMY_MASK)
dummy_inputs = {
"input_ids": input_ids,
"attention_mask": input_mask,
}
return dummy_inputs
def _init_weights(self, module):
"""Initialize the weights"""
factor = self.config.initializer_factor # Used for testing weights initialization
if isinstance(module, nn.LayerNorm):
module.weight.data.fill_(factor * 1.0)
module.bias.data.zero_()
elif isinstance(module, nn.Linear):
module.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5))
if hasattr(module, "bias") and module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=factor * 1.0)
elif isinstance(module, GPTSanJapaneseModel):
# Mesh TensorFlow embeddings initialization
# See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L1624
module.embed_tokens.weight.data.normal_(mean=0.0, std=factor * 1.0)
module.position_embeddings.weight.data.normal_(mean=0.0, std=factor * 1.0)
if hasattr(module, "extra_position_embeddings") and module.extra_position_embeddings is not None:
module.extra_position_embeddings.weight.data.normal_(mean=0.0, std=factor * 1.0)
elif isinstance(module, (GPTSanJapaneseModel, GPTSanJapaneseForConditionalGeneration)):
# Mesh TensorFlow embeddings initialization
# See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L1624
module.final_logits_bias.data.normal_(mean=0.0, std=factor * 1.0)
if hasattr(module, "lm_head") and not self.config.tie_word_embeddings:
module.lm_head.weight.data.normal_(mean=0.0, std=factor * 1.0)
elif isinstance(module, GPTSanJapaneseDenseActDense):
# Mesh TensorFlow FF initialization
# See https://github.com/tensorflow/mesh/blob/master/mesh_tensorflow/transformer/transformer_layers.py#L56
# and https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L89
module.wi.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_model) ** -0.5))
if hasattr(module.wi, "bias") and module.wi.bias is not None:
module.wi.bias.data.zero_()
module.wo.weight.data.normal_(mean=0.0, std=factor * ((self.config.d_ff) ** -0.5))
if hasattr(module.wo, "bias") and module.wo.bias is not None:
module.wo.bias.data.zero_()
elif isinstance(module, GPTSanJapaneseAttention):
# Multi-headed attention
d_model = self.config.d_model
key_value_proj_dim = self.config.d_model
n_heads = self.config.num_heads
module.k_proj.weight.data.normal_(mean=0.0, std=factor * ((d_model * key_value_proj_dim) ** -0.5))
module.v_proj.weight.data.normal_(mean=0.0, std=factor * ((d_model * key_value_proj_dim) ** -0.5))
module.q_proj.weight.data.normal_(mean=0.0, std=factor * ((d_model * key_value_proj_dim) ** -0.5))
module.out_proj.weight.data.normal_(mean=0.0, std=factor * ((n_heads * key_value_proj_dim) ** -0.5))
elif isinstance(module, GPTSanJapaneseSparseMLP):
# Mesh TensorFlow attention initialization to avoid scaling before softmax
# See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/attention.py#L136
d_model = self.config.d_model
key_value_proj_dim = self.config.d_model
n_heads = self.config.num_heads
module.router.classifier.weight.data.normal_(mean=0.0, std=factor * 1)
for idx in range(self.config.num_experts):
module.experts[f"expert_{idx}"].wi.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5))
module.experts[f"expert_{idx}"].wo.weight.data.normal_(mean=0.0, std=factor * (d_model**-0.5))
def _shift_right(self, input_ids):
decoder_start_token_id = self.config.decoder_start_token_id
pad_token_id = self.config.pad_token_id
if decoder_start_token_id is None:
raise ValueError(
"self.model.config.decoder_start_token_id has to be defined. In T5 it is usually set to the pad_token_id. "
"See T5 docs for more information."
)
# shift inputs to the right
if is_torch_fx_proxy(input_ids):
# Item assignment is not supported natively for proxies.
shifted_input_ids = torch.full(input_ids.shape[:-1] + (1,), decoder_start_token_id)
shifted_input_ids = torch.cat([shifted_input_ids, input_ids[..., :-1]], dim=-1)
else:
shifted_input_ids = input_ids.new_zeros(input_ids.shape)
shifted_input_ids[..., 1:] = input_ids[..., :-1].clone()
shifted_input_ids[..., 0] = decoder_start_token_id
if pad_token_id is None:
raise ValueError("self.model.config.pad_token_id has to be defined.")
# replace possible -100 values in labels by `pad_token_id`
shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id)
return shifted_input_ids
GPTSAN_JAPANESE_START_DOCSTRING = r"""
The [GPTSAN-japanese](https://github.com/tanreinama/GPTSAN) model was proposed in General-purpose Swich transformer
based Japanese language model
This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
and behavior.
Parameters:
config ([`GPTSanJapaneseConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
GPTSAN_JAPANESE_INPUTS_DOCSTRING = r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
Indices of input sequence tokens in the vocabulary. GPTSAN-japanese is a model that generates sentence
continuations or predicts tokens at mask positions. Special tokens required for inputs to the model are
automatically appended.
attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
token_type_ids (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
An input that masks the Prefix part in the Prefix-LM input. Mask values selected in `[0, 1]`:
- 1 for tokens that are **prefix** input,
- 0 for tokens that are **not-prefix** input.
spout (`torch.Tensor` of shape `(batch_size, config.d_spout)`):
This vector is transformed through an 8-layer FFN and can be used instead of `past_key_values`.
past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*):
Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`:
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
model's internal embedding lookup matrix.
decoder_inputs_embeds (`torch.FloatTensor` of shape `(batch_size, target_sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `decoder_input_ids` you can choose to directly pass an embedded
representation. If `past_key_values` is used, optionally only the last `decoder_inputs_embeds` have to be
input (see `past_key_values`). This is useful if you want more control over how to convert
`decoder_input_ids` indices into associated vectors than the model's internal embedding lookup matrix.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the decoder model, useful to compute the auxiliary loss for Mixture of Experts models.
"""
@add_start_docstrings(
"The bare GPTSAN-japanese Model transformer outputting raw hidden-states without any specific head on top.",
GPTSAN_JAPANESE_START_DOCSTRING,
)
class GPTSanJapaneseModel(GPTSanJapanesePreTrainedModel):
def __init__(self, config: GPTSanJapaneseConfig):
super().__init__(config)
self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.d_model)
self.config = copy.deepcopy(config)
self.embed_tokens = nn.Embedding(config.vocab_size, config.d_model)
self.last_project = nn.Linear(config.d_model, config.d_model, bias=True)
self.act = ACT2FN["swish"]
self.blocks = torch.nn.ModuleList([])
for _ in range(config.num_switch_layers):
self.blocks.append(GPTSanJapaneseBlock(config))
for _ in range(config.num_ext_layers):
self.blocks.append(GPTSanJapaneseBlock(config, ext_layer=True))
if config.num_ext_layers > 0:
self.extra_position_embeddings = nn.Embedding(config.max_position_embeddings, config.d_model)
if config.d_spout:
spouts = []
for _ in range(8):
spouts.append(nn.Linear(config.d_spout, config.d_spout, bias=False))
spouts.append(nn.Tanh())
spouts.append(nn.Linear(config.d_spout, config.num_layers * 2 * config.d_model, bias=False))
self.spout = nn.Sequential(*spouts)
self.post_init()
def get_input_embeddings(self):
return self.embed_tokens
def set_input_embeddings(self, new_embeddings):
self.embed_tokens = new_embeddings
@add_start_docstrings_to_model_forward(GPTSAN_JAPANESE_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.FloatTensor] = None,
spout: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
head_mask: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = False,
inputs_embeds: Optional[torch.FloatTensor] = None,
decoder_inputs_embeds: Optional[torch.FloatTensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
output_router_logits: Optional[bool] = None,
num_precontext: Optional[torch.LongTensor] = None,
) -> Union[MoEModelOutputWithPastAndCrossAttentions, Tuple[torch.FloatTensor]]:
r"""
num_precontext (`torch.LongTensor` of shape `(batch_size,1)`):
length of `hybrid` input tokens in the input. Tokens up to this length refer to both front and back like
BERT, tokens after that refer only to front like GPT. see also:
https://github.com/tanreinama/GPTSAN/blob/main/report/model.md
Returns:
`MoEModelOutputWithPastAndCrossAttentions` or `tuple` if `return_dict` returns
MoEModelOutputWithPastAndCrossAttentions insted of tuple
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
device = self.position_embeddings.weight.device
if input_ids is None:
input_ids = torch.zeros([1, 1]).int().to(device) # dummy for input_ids was None
if inputs_embeds is not None:
raise NotImplementedError(
"GPTSanJapaneseModel does not use `inputs_embeds`. Make sure to pass in `input_ids` instead."
)
num_pasts_contexts = 0
num_batch = input_ids.shape[0]
pasts_or_spout_value = None
if past_key_values is not None:
num_pasts_contexts = past_key_values[0][0].shape[2]
elif self.config.d_spout and spout is not None:
# `spout` is a special input vector specific to GPTSAN
# This controls the output by projecting embedded information such as the class of sentences during learning.
# It should passed instead of the first past_key_value.
# See the original GPTSAN repository for details
num_pasts_contexts += 1
# If there is an attention_mask, increase first one for spout
if self.config.d_spout and spout is not None and attention_mask is not None:
attention_mask_with_spout = torch.ones(num_batch, attention_mask.shape[1] + 1, device=device)
attention_mask_with_spout[:, 1:] -= 1 - attention_mask # 1st token should be spout
attention_mask = attention_mask_with_spout # update attention_mask
if num_precontext is not None:
# `num_precontext` is the number of tokens that refer to each other in prefix-lm
# created per batch, so dimension of num_precontext should be [batch, 1]
if not (
len(num_precontext.shape) == 2 and num_precontext.shape[1] == 1
): # num_precontext Should be [batch,1]
raise ValueError("num_precontext should be [batch, 1] size.")
num_precontext = torch.reshape(num_precontext, [-1])
else:
num_precontext = torch.zeros([num_batch]).int().to(device)
num_input_contexts = input_ids.shape[1]
num_output_contexts = num_input_contexts + num_pasts_contexts
hidden_states = self.embed_tokens(input_ids)
if past_key_values is not None:
pasts_or_spout_value = past_key_values
elif self.config.d_spout and spout is not None:
# Make vector from `spout` of GPTSAN to the same shape as past_key_values
pasts_or_spout_value = self.spout(spout) # projecting `spout` vector
pasts_or_spout_value = torch.reshape(
pasts_or_spout_value,
[
num_batch,
self.config.num_layers,
2,
self.config.num_heads,
num_pasts_contexts,
self.config.d_model // self.config.num_heads,
],
)
pasts_or_spout_value = torch.split(pasts_or_spout_value, [1] * self.config.num_layers, dim=1)
# make same shape as past_key_values
pasts_or_spout_value = tuple(
tuple([b.squeeze(1) for b in torch.split(a.squeeze(1), [1, 1], dim=1)]) for a in pasts_or_spout_value
)
else:
pasts_or_spout_value = [None] * self.config.num_layers
# Token position considering spout and pasts
token_position = torch.arange(num_input_contexts).to(device) + num_pasts_contexts
if attention_mask is None:
attention_mask = torch.ones(num_batch, num_input_contexts, device=device)
# positions for get position_embeddings
gather_position = (
(
torch.zeros((num_batch, self.config.d_model, num_input_contexts)).to(device)
+ token_position.unsqueeze(0)
)
.transpose(1, 2)
.long()
)
# When padding with padding_side="left", zeros line up on the left side of attention_mask, so position_embeddings is shifted accordingly
gather_position -= (1 - attention_mask).argmin(dim=-1).unsqueeze(1).unsqueeze(2)
gather_position = torch.clip(gather_position, num_pasts_contexts, self.config.max_position_embeddings - 1)
# attention_mask is applied per batch
for i in range(num_batch):
hidden_states[i] += torch.gather(self.position_embeddings.weight, dim=0, index=gather_position[i])
# Create a mask to be used when making the prefix Input length of Prefix-LM variable
causal_mask = (
torch.tril(torch.ones((num_output_contexts, num_output_contexts), dtype=torch.uint8))
.view(1, 1, num_output_contexts, num_output_contexts)
.to(device)
)
prefix_lm_mask = causal_mask[:, :, -num_input_contexts:, :]
if token_type_ids is not None:
token_type_ids = token_type_ids.unsqueeze(1).unsqueeze(2)
prefix_lm_mask = ((prefix_lm_mask + token_type_ids) > 0).float()
# Marge prefix_lm_mask and attention_mask
extended_attention_mask = prefix_lm_mask * attention_mask.unsqueeze(1).unsqueeze(2)
# Prepare head mask if needed
if head_mask is not None:
head_mask = self.get_head_mask(
head_mask, self.config.num_switch_layers + self.config.num_ext_layers
) # n_layer x batch x n_heads x N x N
# outputs
present_key_value_states = () if self.config.use_cache or use_cache else None
all_hidden_states = () if self.config.output_hidden_states or output_hidden_states else None
all_attentions = () if self.config.output_attentions or output_attentions else None
all_router_probs = () if self.config.output_router_logits or output_router_logits else None
for layer, past in enumerate(pasts_or_spout_value):
if layer == self.config.num_switch_layers:
if self.config.num_ext_layers > 0:
# extra_position_embeddings are extra position embeddings that are only created when extending the model with code from the original GPTSAN repository. Not used in the default model.
# However, it is created when you create an additional layer and partially train only that location.
# Therefore, convert_gptsan_tf_checkpoint_to_pytorch.py is used when converting and loading models created in the original GPTSAN repository.
for i in range(num_batch):
hidden_states[i] += torch.gather(
self.extra_position_embeddings.weight, dim=0, index=gather_position[i]
)
output_router_tuple = (
self.config.output_router_logits or output_router_logits
) and layer < self.config.num_switch_layers
block_output = self.blocks[layer](
hidden_states=hidden_states,
past_key_value=past,
attention_mask=extended_attention_mask,
head_mask=head_mask,
use_cache=self.config.use_cache or use_cache,
output_attentions=self.config.output_attentions or output_attentions,
output_router_tuple=output_router_tuple,
)
outpos = 0
hidden_states = block_output[outpos]
if self.config.output_hidden_states or output_hidden_states:
all_hidden_states += (hidden_states,)
if self.config.use_cache or use_cache:
outpos += 1
present = block_output[outpos]
present_key_value_states += (present,)
if self.config.output_attentions or output_attentions:
outpos += 1
attention_probs = block_output[outpos]
all_attentions += (attention_probs,)
if output_router_tuple:
outpos += 1
router_tuple = block_output[outpos]
all_router_probs.append(router_tuple[0])
hidden_states = self.last_project(hidden_states)
hidden_states = self.act(hidden_states)
if self.config.output_hidden_states or output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [
hidden_states,
present_key_value_states,
all_hidden_states,
all_attentions,
all_router_probs,
]
if v is not None
)
return MoEModelOutputWithPastAndCrossAttentions(
last_hidden_state=hidden_states,
past_key_values=present_key_value_states,
hidden_states=all_hidden_states,
attentions=all_attentions,
router_probs=all_router_probs,
)
@add_start_docstrings(
"The bare GPTSAN-japanese Model with a language modeling head.",
GPTSAN_JAPANESE_START_DOCSTRING,
)
class GPTSanJapaneseForConditionalGeneration(GPTSanJapanesePreTrainedModel):
_tied_weights_keys = ["lm_head.weight"]
def __init__(self, config: GPTSanJapaneseConfig):
super().__init__(config)
self.model = GPTSanJapaneseModel(config)
self.register_buffer("final_logits_bias", torch.zeros([1, config.vocab_size]))
self.lm_head = nn.Linear(config.d_model, config.vocab_size, bias=False)
if not self.config.torchscript:
self.lm_head.weight = self.model.embed_tokens.weight
@add_start_docstrings_to_model_forward(GPTSAN_JAPANESE_INPUTS_DOCSTRING)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
token_type_ids: Optional[torch.FloatTensor] = None,
spout: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
head_mask: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = False,
inputs_embeds: Optional[torch.FloatTensor] = None,
decoder_inputs_embeds: Optional[torch.FloatTensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
output_router_logits: Optional[bool] = None,
labels: Optional[torch.LongTensor] = None,
) -> Union[Tuple[torch.FloatTensor], MoECausalLMOutputWithPast]:
r"""
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
Labels for computing the sequence classification loss. Indices should be in `[-100, 0, ...,
config.vocab_size - 1]`. All labels set to `-100` are ignored (masked), the loss is only computed for
labels in `[0, ..., config.vocab_size]`
Returns:
`MoECausalLMOutputWithPast` or `tuple` if `return_dict` returns MoECausalLMOutputWithPast insted of tuple
Example:
Text Generation with regular LM Model
```python
>>> from transformers import AutoModel, AutoTokenizer, trainer_utils
>>> device = "cuda"
>>> model = AutoModel.from_pretrained("Tanrei/GPTSAN-japanese").to(device)
>>> tokenizer = AutoTokenizer.from_pretrained("Tanrei/GPTSAN-japanese")
>>> x_token = tokenizer("織田信長は、", return_tensors="pt")
>>> trainer_utils.set_seed(30)
>>> input_ids = x_token.input_ids.to(device)
>>> gen_token = model.generate(input_ids, max_new_tokens=50)
>>> tokenizer.decode(gen_token[0])
"織田信長は、政治・軍事の中枢まで掌握した政治家であり、日本史上類を見ない驚異的な軍事侵攻を続け..."
```
Text Generation with Prefix-LM Model
```python
>>> from transformers import AutoModel, AutoTokenizer, trainer_utils
>>> device = "cuda"
>>> model = AutoModel.from_pretrained("Tanrei/GPTSAN-japanese").to(device)
>>> tokenizer = AutoTokenizer.from_pretrained("Tanrei/GPTSAN-japanese")
>>> x_token = tokenizer("", prefix_text="織田信長は、", return_tensors="pt")
>>> trainer_utils.set_seed(30)
>>> input_ids = x_token.input_ids.to(device)
>>> token_type_ids = x_token.token_type_ids.to(device)
>>> gen_token = model.generate(input_ids, token_type_ids=token_type_ids, max_new_tokens=50)
>>> tokenizer.decode(gen_token[0])
"織田信長は、政治・外交で数々の戦果を上げるが、1568年からは、いわゆる本能寺の変で細川晴元に暗殺される..."
```
Simultaneously Text Generation And Masked Language Model
```python
>>> from transformers import AutoModel, AutoTokenizer, trainer_utils
>>> device = "cuda"
>>> model = AutoModel.from_pretrained("Tanrei/GPTSAN-japanese").to(device)
>>> tokenizer = AutoTokenizer.from_pretrained("Tanrei/GPTSAN-japanese")
>>> masked_sentence = "武田信玄は、<|inputmask|>時代ファンならぜひ押さえ<|inputmask|>きたい名将の一人。"
>>> x_token = tokenizer("", prefix_text=masked_sentence, return_tensors="pt")
>>> trainer_utils.set_seed(30)
>>> input_ids = x_token.input_ids.to(device)
>>> token_type_ids = x_token.token_type_ids.to(device)
>>> out_lm_token = model.generate(input_ids, token_type_ids=token_type_ids, max_new_tokens=50)
>>> out_mlm_token = model(input_ids, token_type_ids=token_type_ids).logits.argmax(axis=-1)
>>> tokenizer.decode(out_mlm_token[0])
"武田信玄は、戦国時代ファンならぜひ押さえておきたい名将の一人。"
>>> tokenizer.decode(out_lm_token[0][input_ids.shape[1] :])
"武田氏の三代に渡った武田家のひとり\n甲斐市に住む、日本史上最大の戦国大名。..."
```"""
SEG_TOKEN = self.config.separator_token_id
use_cache = use_cache or self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
model_return_dict = True
num_precontext = None
if input_ids is not None:
num_batch = input_ids.shape[0]
num_precontext = torch.zeros([num_batch]).int().to(input_ids.device)
where_separators = torch.where(input_ids == SEG_TOKEN)
num_precontext[where_separators[0]] += where_separators[1]
num_precontext = num_precontext.unsqueeze(1)
outputs = self.model(
input_ids,
attention_mask,
token_type_ids,
spout,
past_key_values,
head_mask,
use_cache,
inputs_embeds,
decoder_inputs_embeds,
output_attentions,
output_hidden_states,
model_return_dict,
output_router_logits,
num_precontext,
)
lm_logits = self.lm_head(outputs[0])
if lm_logits.shape[-1] == self.final_logits_bias.shape[-1]:
lm_logits = lm_logits + self.final_logits_bias
loss = None
z_loss = None
router_probs = None
aux_loss = None
if labels is not None:
# move labels to correct device to enable model parallelism
labels = labels.to(lm_logits.device)
loss_fct = nn.CrossEntropyLoss(ignore_index=-100)
if output_router_logits:
# Compute the router loss (z_loss + auxiliary loss) for each router in the encoder and decoder
router_logits, expert_indexes = self._unpack_router_logits(outputs.router_probs)
z_loss = router_z_loss_func(router_logits)
router_probs = nn.Softmax(dim=-1)(router_logits)
aux_loss = load_balancing_loss_func(router_probs, expert_indexes)
loss = loss_fct(lm_logits.view(-1, lm_logits.size(-1)), labels.view(-1))
if not return_dict:
return tuple(
v
for v in [
loss,
lm_logits,
outputs.past_key_values,
outputs.hidden_states,
outputs.router_probs,
z_loss,
aux_loss,
]
if v is not None
)
return MoECausalLMOutputWithPast(
loss=loss,
logits=lm_logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
router_logits=outputs.router_probs,
z_loss=z_loss,
aux_loss=aux_loss,
)
def prepare_inputs_for_generation(
self,
input_ids: torch.LongTensor,
attention_mask: torch.FloatTensor,
token_type_ids: Optional[torch.FloatTensor] = None,
spout: Optional[Union[List, torch.FloatTensor]] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
**kwargs,
):
if isinstance(spout, list):
spout = torch.tensor(spout).float()
if input_ids is not None:
spout = spout.to(input_ids.device)
if past_key_values is not None:
return {
"input_ids": input_ids[:, -1:] if input_ids is not None else None,
"attention_mask": attention_mask,
"token_type_ids": token_type_ids[:, -1:] if token_type_ids is not None else None,
"spout": spout,
"past_key_values": past_key_values,
}
return {
"input_ids": input_ids,
"attention_mask": attention_mask,
"token_type_ids": token_type_ids,
"spout": spout,
"past_key_values": None,
}
def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor):
return self._shift_right(labels)
def resize_token_embeddings(self, new_num_tokens: int, pad_to_multiple_of: Optional[int] = None) -> nn.Embedding:
new_embeddings = super().resize_token_embeddings(new_num_tokens, pad_to_multiple_of)
self._resize_final_logits_bias(new_embeddings.weight.shape[0])
return new_embeddings
def _resize_final_logits_bias(self, new_num_tokens: int) -> None:
old_num_tokens = self.final_logits_bias.shape[-1]
if new_num_tokens <= old_num_tokens:
new_bias = self.final_logits_bias[:, :new_num_tokens]
else:
extra_bias = torch.zeros((1, new_num_tokens - old_num_tokens), device=self.final_logits_bias.device)
new_bias = torch.cat([self.final_logits_bias, extra_bias], dim=1)
self.register_buffer("final_logits_bias", new_bias)
def get_input_embeddings(self):
return self.model.get_input_embeddings()
def set_input_embeddings(self, new_embeddings):
self.model.set_input_embeddings(new_embeddings)
def set_output_embeddings(self, new_embeddings):
self.lm_head = new_embeddings
def get_output_embeddings(self):
return self.lm_head
def _unpack_router_logits(self, router_outputs):
total_router_logits = []
total_expert_indexes = []
for router_output in router_outputs:
if len(router_output[0].shape) > 1:
router_logits, expert_indexes = router_output
total_router_logits.append(router_logits)
total_expert_indexes.append(expert_indexes)
return torch.cat(total_router_logits, dim=1), torch.cat(total_expert_indexes, dim=1)
|
transformers/src/transformers/models/deprecated/gptsan_japanese/modeling_gptsan_japanese.py/0
|
{
"file_path": "transformers/src/transformers/models/deprecated/gptsan_japanese/modeling_gptsan_japanese.py",
"repo_id": "transformers",
"token_count": 28118
}
| 346
|
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Speech processor class for M-CTC-T
"""
import warnings
from contextlib import contextmanager
from ....processing_utils import ProcessorMixin
class MCTCTProcessor(ProcessorMixin):
r"""
Constructs a MCTCT processor which wraps a MCTCT feature extractor and a MCTCT tokenizer into a single processor.
[`MCTCTProcessor`] offers all the functionalities of [`MCTCTFeatureExtractor`] and [`AutoTokenizer`]. See the
[`~MCTCTProcessor.__call__`] and [`~MCTCTProcessor.decode`] for more information.
Args:
feature_extractor (`MCTCTFeatureExtractor`):
An instance of [`MCTCTFeatureExtractor`]. The feature extractor is a required input.
tokenizer (`AutoTokenizer`):
An instance of [`AutoTokenizer`]. The tokenizer is a required input.
"""
feature_extractor_class = "MCTCTFeatureExtractor"
tokenizer_class = "AutoTokenizer"
def __init__(self, feature_extractor, tokenizer):
super().__init__(feature_extractor, tokenizer)
self.current_processor = self.feature_extractor
self._in_target_context_manager = False
def __call__(self, *args, **kwargs):
"""
When used in normal mode, this method forwards all its arguments to MCTCTFeatureExtractor's
[`~MCTCTFeatureExtractor.__call__`] and returns its output. If used in the context
[`~MCTCTProcessor.as_target_processor`] this method forwards all its arguments to AutoTokenizer's
[`~AutoTokenizer.__call__`]. Please refer to the doctsring of the above two methods for more information.
"""
# For backward compatibility
if self._in_target_context_manager:
return self.current_processor(*args, **kwargs)
if "raw_speech" in kwargs:
warnings.warn("Using `raw_speech` as a keyword argument is deprecated. Use `audio` instead.")
audio = kwargs.pop("raw_speech")
else:
audio = kwargs.pop("audio", None)
sampling_rate = kwargs.pop("sampling_rate", None)
text = kwargs.pop("text", None)
if len(args) > 0:
audio = args[0]
args = args[1:]
if audio is None and text is None:
raise ValueError("You need to specify either an `audio` or `text` input to process.")
if audio is not None:
inputs = self.feature_extractor(audio, *args, sampling_rate=sampling_rate, **kwargs)
if text is not None:
encodings = self.tokenizer(text, **kwargs)
if text is None:
return inputs
elif audio is None:
return encodings
else:
inputs["labels"] = encodings["input_ids"]
return inputs
def batch_decode(self, *args, **kwargs):
"""
This method forwards all its arguments to AutoTokenizer's [`~PreTrainedTokenizer.batch_decode`]. Please refer
to the docstring of this method for more information.
"""
return self.tokenizer.batch_decode(*args, **kwargs)
def pad(self, *args, **kwargs):
"""
When used in normal mode, this method forwards all its arguments to MCTCTFeatureExtractor's
[`~MCTCTFeatureExtractor.pad`] and returns its output. If used in the context
[`~MCTCTProcessor.as_target_processor`] this method forwards all its arguments to PreTrainedTokenizer's
[`~PreTrainedTokenizer.pad`]. Please refer to the docstring of the above two methods for more information.
"""
# For backward compatibility
if self._in_target_context_manager:
return self.current_processor.pad(*args, **kwargs)
input_features = kwargs.pop("input_features", None)
labels = kwargs.pop("labels", None)
if len(args) > 0:
input_features = args[0]
args = args[1:]
if input_features is not None:
input_features = self.feature_extractor.pad(input_features, *args, **kwargs)
if labels is not None:
labels = self.tokenizer.pad(labels, **kwargs)
if labels is None:
return input_features
elif input_features is None:
return labels
else:
input_features["labels"] = labels["input_ids"]
return input_features
def decode(self, *args, **kwargs):
"""
This method forwards all its arguments to AutoTokenizer's [`~PreTrainedTokenizer.decode`]. Please refer to the
docstring of this method for more information.
"""
return self.tokenizer.decode(*args, **kwargs)
@contextmanager
def as_target_processor(self):
"""
Temporarily sets the tokenizer for processing the input. Useful for encoding the labels when fine-tuning MCTCT.
"""
warnings.warn(
"`as_target_processor` is deprecated and will be removed in v5 of Transformers. You can process your "
"labels by using the argument `text` of the regular `__call__` method (either in the same call as "
"your audio inputs, or in a separate call."
)
self._in_target_context_manager = True
self.current_processor = self.tokenizer
yield
self.current_processor = self.feature_extractor
self._in_target_context_manager = False
|
transformers/src/transformers/models/deprecated/mctct/processing_mctct.py/0
|
{
"file_path": "transformers/src/transformers/models/deprecated/mctct/processing_mctct.py",
"repo_id": "transformers",
"token_count": 2273
}
| 347
|
# coding=utf-8
# Copyright 2023 EleutherAI and the HuggingFace Inc. team. All rights reserved.
#
# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
# and OPT implementations in this library. It has been modified from its
# original forms to accommodate minor architectural differences compared
# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch Open-Llama model."""
import math
from typing import List, Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import nn
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
from ....activations import ACT2FN
from ....modeling_attn_mask_utils import _prepare_4d_causal_attention_mask
from ....modeling_outputs import BaseModelOutputWithPast, CausalLMOutputWithPast, SequenceClassifierOutputWithPast
from ....modeling_utils import PreTrainedModel
from ....utils import add_start_docstrings, add_start_docstrings_to_model_forward, logging, replace_return_docstrings
from .configuration_open_llama import OpenLlamaConfig
logger = logging.get_logger(__name__)
try:
from xformers import ops as xops
except ImportError:
xops = None
_CONFIG_FOR_DOC = "OpenLlamaConfig"
class OpenLlamaRMSNorm(nn.Module):
def __init__(self, hidden_size, eps=1e-6):
"""
OpenLlamaRMSNorm is equivalent to T5LayerNorm
"""
super().__init__()
self.weight = nn.Parameter(torch.ones(hidden_size))
self.variance_epsilon = eps
def forward(self, hidden_states):
input_dtype = hidden_states.dtype
hidden_states = hidden_states.to(torch.float32)
variance = hidden_states.pow(2).mean(-1, keepdim=True)
hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon)
return self.weight * hidden_states.to(input_dtype)
def extra_repr(self):
return f"{tuple(self.weight.shape)}, eps={self.variance_epsilon}"
class OpenLlamaRotaryEmbedding(nn.Module):
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
super().__init__()
self.dim = dim
self.max_position_embeddings = max_position_embeddings
self.base = base
inv_freq = 1.0 / (self.base ** (torch.arange(0, self.dim, 2, dtype=torch.int64).float().to(device) / self.dim))
self.register_buffer("inv_freq", inv_freq, persistent=False)
# Build here to make `torch.jit.trace` work.
self._set_cos_sin_cache(
seq_len=max_position_embeddings, device=self.inv_freq.device, dtype=torch.get_default_dtype()
)
def _set_cos_sin_cache(self, seq_len, device, dtype):
self.max_seq_len_cached = seq_len
t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
freqs = torch.outer(t, self.inv_freq)
# Different from paper, but it uses a different permutation in order to obtain the same calculation
emb = torch.cat((freqs, freqs), dim=-1)
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
def forward(self, x, seq_len=None):
# x: [bs, num_attention_heads, seq_len, head_size]
if seq_len > self.max_seq_len_cached:
self._set_cos_sin_cache(seq_len=seq_len, device=x.device, dtype=x.dtype)
return (
self.cos_cached[:seq_len].to(dtype=x.dtype),
self.sin_cached[:seq_len].to(dtype=x.dtype),
)
class OpenLlamaLinearScalingRotaryEmbedding(OpenLlamaRotaryEmbedding):
"""OpenLlamaRotaryEmbedding extended with linear scaling. Credits to the Reddit user /u/kaiokendev"""
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
self.scaling_factor = scaling_factor
super().__init__(dim, max_position_embeddings, base, device)
def _set_cos_sin_cache(self, seq_len, device, dtype):
self.max_seq_len_cached = seq_len
t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
t = t / self.scaling_factor
freqs = torch.outer(t, self.inv_freq)
# Different from paper, but it uses a different permutation in order to obtain the same calculation
emb = torch.cat((freqs, freqs), dim=-1)
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
class OpenLlamaDynamicNTKScalingRotaryEmbedding(OpenLlamaRotaryEmbedding):
"""OpenLlamaRotaryEmbedding extended with Dynamic NTK scaling. Credits to the Reddit users /u/bloc97 and /u/emozilla"""
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
self.scaling_factor = scaling_factor
super().__init__(dim, max_position_embeddings, base, device)
def _set_cos_sin_cache(self, seq_len, device, dtype):
self.max_seq_len_cached = seq_len
if seq_len > self.max_position_embeddings:
base = self.base * (
(self.scaling_factor * seq_len / self.max_position_embeddings) - (self.scaling_factor - 1)
) ** (self.dim / (self.dim - 2))
inv_freq = 1.0 / (base ** (torch.arange(0, self.dim, 2, dtype=torch.int64).float().to(device) / self.dim))
self.register_buffer("inv_freq", inv_freq, persistent=False)
t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
freqs = torch.outer(t, self.inv_freq)
# Different from paper, but it uses a different permutation in order to obtain the same calculation
emb = torch.cat((freqs, freqs), dim=-1)
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
def rotate_half(x):
"""Rotates half the hidden dims of the input."""
x1 = x[..., : x.shape[-1] // 2]
x2 = x[..., x.shape[-1] // 2 :]
return torch.cat((-x2, x1), dim=-1)
def apply_rotary_pos_emb(q, k, cos, sin, position_ids, unsqueeze_dim=1):
"""Applies Rotary Position Embedding to the query and key tensors.
Args:
q (`torch.Tensor`): The query tensor.
k (`torch.Tensor`): The key tensor.
cos (`torch.Tensor`): The cosine part of the rotary embedding.
sin (`torch.Tensor`): The sine part of the rotary embedding.
position_ids (`torch.Tensor`):
The position indices of the tokens corresponding to the query and key tensors. For example, this can be
used to pass offsetted position ids when working with a KV-cache.
unsqueeze_dim (`int`, *optional*, defaults to 1):
The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
Returns:
`tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
"""
cos = cos[position_ids].unsqueeze(unsqueeze_dim)
sin = sin[position_ids].unsqueeze(unsqueeze_dim)
q_embed = (q * cos) + (rotate_half(q) * sin)
k_embed = (k * cos) + (rotate_half(k) * sin)
return q_embed, k_embed
class OpenLlamaMLP(nn.Module):
def __init__(
self,
hidden_size: int,
intermediate_size: int,
hidden_act: str,
dropout_prob: float,
):
super().__init__()
self.gate_proj = nn.Linear(hidden_size, intermediate_size, bias=False)
self.down_proj = nn.Linear(intermediate_size, hidden_size, bias=False)
self.up_proj = nn.Linear(hidden_size, intermediate_size, bias=False)
self.act_fn = ACT2FN[hidden_act]
self.dropout = nn.Dropout(dropout_prob)
def forward(self, x):
out = self.down_proj(self.act_fn(self.gate_proj(x)) * self.up_proj(x))
return self.dropout(out)
class OpenLlamaAttention(nn.Module):
"""Multi-headed attention from 'Attention Is All You Need' paper"""
def __init__(self, config: OpenLlamaConfig):
super().__init__()
self.config = config
self.hidden_size = config.hidden_size
self.num_heads = config.num_attention_heads
self.head_dim = self.hidden_size // self.num_heads
self.max_position_embeddings = config.max_position_embeddings
self.dropout_prob = config.attention_dropout_prob
self.rope_theta = config.rope_theta
if (self.head_dim * self.num_heads) != self.hidden_size:
raise ValueError(
f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
f" and `num_heads`: {self.num_heads})."
)
self.q_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=False)
self.k_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=False)
self.v_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=False)
self.o_proj = nn.Linear(self.num_heads * self.head_dim, self.hidden_size, bias=False)
self._init_rope()
def _init_rope(self):
if self.config.rope_scaling is None:
self.rotary_emb = OpenLlamaRotaryEmbedding(
self.head_dim,
max_position_embeddings=self.max_position_embeddings,
base=self.rope_theta,
)
else:
scaling_type = self.config.rope_scaling["type"]
scaling_factor = self.config.rope_scaling["factor"]
if scaling_type == "linear":
self.rotary_emb = OpenLlamaLinearScalingRotaryEmbedding(
self.head_dim,
max_position_embeddings=self.max_position_embeddings,
scaling_factor=scaling_factor,
base=self.rope_theta,
)
elif scaling_type == "dynamic":
self.rotary_emb = OpenLlamaDynamicNTKScalingRotaryEmbedding(
self.head_dim,
max_position_embeddings=self.max_position_embeddings,
scaling_factor=scaling_factor,
base=self.rope_theta,
)
else:
raise ValueError(f"Unknown RoPE scaling type {scaling_type}")
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
output_attentions: bool = False,
use_cache: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
bsz, q_len, _ = hidden_states.size()
query_states = self.q_proj(hidden_states).view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
key_states = self.k_proj(hidden_states).view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
value_states = self.v_proj(hidden_states).view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
kv_seq_len = key_states.shape[-2]
if past_key_value is not None:
kv_seq_len += past_key_value[0].shape[-2]
cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
# [bsz, nh, t, hd]
if past_key_value is not None:
# reuse k, v, self_attention
key_states = torch.cat([past_key_value[0], key_states], dim=2)
value_states = torch.cat([past_key_value[1], value_states], dim=2)
past_key_value = (key_states, value_states) if use_cache else None
if self.config.use_memory_efficient_attention and xops is not None and self.training:
attn_weights = None
query_states = query_states.transpose(1, 2)
key_states = key_states.transpose(1, 2)
value_states = value_states.transpose(1, 2)
attn_output = xops.memory_efficient_attention(
query_states, key_states, value_states, attn_bias=xops.LowerTriangularMask(), p=self.dropout_prob
)
else:
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
raise ValueError(
f"Attention weights should be of size {(bsz * self.num_heads, q_len, kv_seq_len)}, but is"
f" {attn_weights.size()}"
)
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
)
attn_weights = attn_weights + attention_mask
attn_weights = torch.max(
attn_weights, torch.tensor(torch.finfo(attn_weights.dtype).min, device=attn_weights.device)
)
# upcast attention to fp32
attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(query_states.dtype)
attn_output = torch.matmul(attn_weights, value_states)
if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.transpose(1, 2)
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
attn_output = self.o_proj(attn_output)
if not output_attentions:
attn_weights = None
return attn_output, attn_weights, past_key_value
class OpenLlamaDecoderLayer(nn.Module):
def __init__(self, config: OpenLlamaConfig):
super().__init__()
self.hidden_size = config.hidden_size
self.self_attn = OpenLlamaAttention(config=config)
self.mlp = OpenLlamaMLP(
hidden_size=self.hidden_size,
intermediate_size=config.intermediate_size,
hidden_act=config.hidden_act,
dropout_prob=config.hidden_dropout_prob,
)
self.input_layernorm = OpenLlamaRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
self.post_attention_layernorm = OpenLlamaRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
output_attentions: Optional[bool] = False,
use_cache: Optional[bool] = False,
) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
"""
Args:
hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)`
attention_mask (`torch.FloatTensor`, *optional*): attention mask of size
`(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
(see `past_key_values`).
past_key_value (`Tuple(torch.FloatTensor)`, *optional*): cached past key and value projection states
"""
residual = hidden_states
hidden_states = self.input_layernorm(hidden_states)
# Self Attention
hidden_states, self_attn_weights, present_key_value = self.self_attn(
hidden_states=hidden_states,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_value=past_key_value,
output_attentions=output_attentions,
use_cache=use_cache,
)
hidden_states = residual + hidden_states
# Fully Connected
residual = hidden_states
hidden_states = self.post_attention_layernorm(hidden_states)
hidden_states = self.mlp(hidden_states)
hidden_states = residual + hidden_states
outputs = (hidden_states,)
if output_attentions:
outputs += (self_attn_weights,)
if use_cache:
outputs += (present_key_value,)
return outputs
OPEN_LLAMA_START_DOCSTRING = r"""
This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
etc.)
This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
and behavior.
Parameters:
config ([`OpenLlamaConfig`]):
Model configuration class with all the parameters of the model. Initializing with a config file does not
load the weights associated with the model, only the configuration. Check out the
[`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
@add_start_docstrings(
"The bare Open-Llama Model outputting raw hidden-states without any specific head on top.",
OPEN_LLAMA_START_DOCSTRING,
)
class OpenLlamaPreTrainedModel(PreTrainedModel):
config_class = OpenLlamaConfig
base_model_prefix = "model"
supports_gradient_checkpointing = True
_no_split_modules = ["OpenLlamaDecoderLayer"]
def _init_weights(self, module):
std = self.config.initializer_range
if isinstance(module, nn.Linear):
module.weight.data.normal_(mean=0.0, std=std)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
if self.config.use_stable_embedding:
torch.nn.init.xavier_normal_(module.weight.data)
else:
module.weight.data.normal_(mean=0.0, std=std)
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
OPEN_LLAMA_INPUTS_DOCSTRING = r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
it.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see
`past_key_values`).
If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]
and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more
information on the default strategy.
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
config.n_positions - 1]`.
[What are position IDs?](../glossary#position-ids)
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
model's internal embedding lookup matrix.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
"""
@add_start_docstrings(
"The bare Open-Llama Model outputting raw hidden-states without any specific head on top.",
OPEN_LLAMA_START_DOCSTRING,
)
class OpenLlamaModel(OpenLlamaPreTrainedModel):
"""
Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`OpenLlamaDecoderLayer`]
Args:
config: OpenLlamaConfig
"""
def __init__(self, config: OpenLlamaConfig):
super().__init__(config)
self.padding_idx = config.pad_token_id
self.vocab_size = config.vocab_size
self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
if config.use_stable_embedding:
self.embed_layer_norm = nn.LayerNorm(config.hidden_size)
else:
self.embed_layer_norm = None
self.layers = nn.ModuleList([OpenLlamaDecoderLayer(config) for _ in range(config.num_hidden_layers)])
self.norm = OpenLlamaRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
self.gradient_checkpointing = False
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.embed_tokens
def set_input_embeddings(self, value):
self.embed_tokens = value
@add_start_docstrings_to_model_forward(OPEN_LLAMA_INPUTS_DOCSTRING)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPast]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
# retrieve input_ids and inputs_embeds
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time")
elif input_ids is not None:
batch_size, seq_length = input_ids.shape
elif inputs_embeds is not None:
batch_size, seq_length, _ = inputs_embeds.shape
else:
raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds")
seq_length_with_past = seq_length
past_key_values_length = 0
if self.gradient_checkpointing and self.training:
if use_cache:
logger.warning_once(
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
)
use_cache = False
if past_key_values is not None:
past_key_values_length = past_key_values[0][0].shape[2]
seq_length_with_past = seq_length_with_past + past_key_values_length
if position_ids is None:
device = input_ids.device if input_ids is not None else inputs_embeds.device
position_ids = torch.arange(
past_key_values_length, seq_length + past_key_values_length, dtype=torch.long, device=device
)
position_ids = position_ids.unsqueeze(0)
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
if self.embed_layer_norm:
inputs_embeds = self.embed_layer_norm(inputs_embeds)
# embed positions
if self.config.use_memory_efficient_attention and self.training:
attention_mask = None
elif attention_mask is None:
attention_mask = torch.ones(
(batch_size, seq_length_with_past), dtype=torch.bool, device=inputs_embeds.device
)
input_shape = (batch_size, seq_length)
attention_mask = _prepare_4d_causal_attention_mask(
attention_mask, input_shape, inputs_embeds, past_key_values_length
)
hidden_states = inputs_embeds
# decoder layers
all_hidden_states = () if output_hidden_states else None
all_self_attns = () if output_attentions else None
next_decoder_cache = () if use_cache else None
for idx, decoder_layer in enumerate(self.layers):
if output_hidden_states:
all_hidden_states += (hidden_states,)
past_key_value = past_key_values[idx] if past_key_values is not None else None
if self.gradient_checkpointing and self.training:
layer_outputs = self._gradient_checkpointing_func(
decoder_layer.__call__,
hidden_states,
attention_mask,
position_ids,
None,
output_attentions,
None,
)
else:
layer_outputs = decoder_layer(
hidden_states,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_value=past_key_value,
output_attentions=output_attentions,
use_cache=use_cache,
)
hidden_states = layer_outputs[0]
if use_cache:
next_decoder_cache += (layer_outputs[2 if output_attentions else 1],)
if output_attentions:
all_self_attns += (layer_outputs[1],)
hidden_states = self.norm(hidden_states)
# add hidden states from the last decoder layer
if output_hidden_states:
all_hidden_states += (hidden_states,)
next_cache = next_decoder_cache if use_cache else None
if not return_dict:
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
return BaseModelOutputWithPast(
last_hidden_state=hidden_states,
past_key_values=next_cache,
hidden_states=all_hidden_states,
attentions=all_self_attns,
)
class OpenLlamaForCausalLM(OpenLlamaPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.model = OpenLlamaModel(config)
if config.shared_input_output_embedding:
self.lm_head = None
else:
self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.model.embed_tokens
def set_input_embeddings(self, value):
self.model.embed_tokens = value
def get_output_embeddings(self):
return self.lm_head
def set_output_embeddings(self, new_embeddings):
self.lm_head = new_embeddings
def set_decoder(self, decoder):
self.model = decoder
def get_decoder(self):
return self.model
@add_start_docstrings_to_model_forward(OPEN_LLAMA_INPUTS_DOCSTRING)
@replace_return_docstrings(output_type=CausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, CausalLMOutputWithPast]:
r"""
Args:
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
(masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
Returns:
Example:
```python
>>> from transformers import AutoTokenizer, OpenLlamaForCausalLM
>>> model = OpenLlamaForCausalLM.from_pretrained("openlm-research/open_llama_7b")
>>> tokenizer = AutoTokenizer.from_pretrained("openlm-research/open_llama_7b")
>>> prompt = "Hey, are you conscious? Can you talk to me?"
>>> inputs = tokenizer(prompt, return_tensors="pt")
>>> # Generate
>>> generate_ids = model.generate(inputs.input_ids, max_length=30)
>>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
"Hey, are you conscious? Can you talk to me?\nI'm not conscious, but I can talk to you."
```"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
# decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
outputs = self.model(
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = outputs[0]
if self.config.shared_input_output_embedding:
logits = torch.einsum(
"blh,vh->blv", hidden_states.to(self.model.embed_tokens.weight.device), self.model.embed_tokens.weight
)
else:
logits = self.lm_head(hidden_states)
loss = None
if labels is not None:
# move labels to correct device to enable model parallelism
labels = labels.to(logits.device)
# Shift so that tokens < n predict n
shift_logits = logits[..., :-1, :].contiguous()
shift_labels = labels[..., 1:].contiguous()
# Flatten the tokens
loss_fct = CrossEntropyLoss()
shift_logits = shift_logits.view(-1, self.config.vocab_size)
shift_labels = shift_labels.view(-1)
# Enable model parallelism
shift_labels = shift_labels.to(shift_logits.device)
loss = loss_fct(shift_logits, shift_labels)
if not return_dict:
output = (logits,) + outputs[1:]
return (loss,) + output if loss is not None else output
return CausalLMOutputWithPast(
loss=loss,
logits=logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def prepare_inputs_for_generation(
self, input_ids, past_key_values=None, attention_mask=None, inputs_embeds=None, **kwargs
):
if past_key_values is not None:
past_length = past_key_values[0][0].shape[2]
# Some generation methods already pass only the last input ID
if input_ids.shape[1] > past_length:
remove_prefix_length = past_length
else:
# Default to old behavior: keep only final ID
remove_prefix_length = input_ids.shape[1] - 1
input_ids = input_ids[:, remove_prefix_length:]
position_ids = kwargs.get("position_ids", None)
if attention_mask is not None and position_ids is None:
# create position_ids on the fly for batch generation
position_ids = attention_mask.long().cumsum(-1) - 1
position_ids.masked_fill_(attention_mask == 0, 1)
if past_key_values:
position_ids = position_ids[:, -input_ids.shape[1] :]
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
else:
model_inputs = {"input_ids": input_ids}
model_inputs.update(
{
"position_ids": position_ids,
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
"attention_mask": attention_mask,
}
)
return model_inputs
@staticmethod
def _reorder_cache(past_key_values, beam_idx):
reordered_past = ()
for layer_past in past_key_values:
reordered_past += (
tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
)
return reordered_past
@add_start_docstrings(
"""
The LLaMa Model transformer with a sequence classification head on top (linear layer).
[`OpenLlamaForSequenceClassification`] uses the last token in order to do the classification, as other causal
models (e.g. GPT-2) do.
Since it does classification on the last token, it requires to know the position of the last token. If a
`pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
each row of the batch).
""",
OPEN_LLAMA_START_DOCSTRING,
)
class OpenLlamaForSequenceClassification(OpenLlamaPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.num_labels = config.num_labels
self.model = OpenLlamaModel(config)
self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.model.embed_tokens
def set_input_embeddings(self, value):
self.model.embed_tokens = value
@add_start_docstrings_to_model_forward(OPEN_LLAMA_INPUTS_DOCSTRING)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, SequenceClassifierOutputWithPast]:
r"""
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
transformer_outputs = self.model(
input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = transformer_outputs[0]
logits = self.score(hidden_states)
if input_ids is not None:
batch_size = input_ids.shape[0]
else:
batch_size = inputs_embeds.shape[0]
if self.config.pad_token_id is None and batch_size != 1:
raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
if self.config.pad_token_id is None:
sequence_lengths = -1
else:
if input_ids is not None:
# if no pad token found, use modulo instead of reverse indexing for ONNX compatibility
sequence_lengths = torch.eq(input_ids, self.config.pad_token_id).int().argmax(-1) - 1
sequence_lengths = sequence_lengths % input_ids.shape[-1]
sequence_lengths = sequence_lengths.to(logits.device)
else:
sequence_lengths = -1
pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
loss = None
if labels is not None:
labels = labels.to(logits.device)
if self.config.problem_type is None:
if self.num_labels == 1:
self.config.problem_type = "regression"
elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
self.config.problem_type = "single_label_classification"
else:
self.config.problem_type = "multi_label_classification"
if self.config.problem_type == "regression":
loss_fct = MSELoss()
if self.num_labels == 1:
loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
else:
loss = loss_fct(pooled_logits, labels)
elif self.config.problem_type == "single_label_classification":
loss_fct = CrossEntropyLoss()
loss = loss_fct(pooled_logits.view(-1, self.num_labels), labels.view(-1))
elif self.config.problem_type == "multi_label_classification":
loss_fct = BCEWithLogitsLoss()
loss = loss_fct(pooled_logits, labels)
if not return_dict:
output = (pooled_logits,) + transformer_outputs[1:]
return ((loss,) + output) if loss is not None else output
return SequenceClassifierOutputWithPast(
loss=loss,
logits=pooled_logits,
past_key_values=transformer_outputs.past_key_values,
hidden_states=transformer_outputs.hidden_states,
attentions=transformer_outputs.attentions,
)
|
transformers/src/transformers/models/deprecated/open_llama/modeling_open_llama.py/0
|
{
"file_path": "transformers/src/transformers/models/deprecated/open_llama/modeling_open_llama.py",
"repo_id": "transformers",
"token_count": 18975
}
| 348
|
# coding=utf-8
# Copyright 2018 Google AI, Google Brain and Carnegie Mellon University Authors and the HuggingFace Inc. team.
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Utilities for PyTorch Transformer XL model. Directly adapted from https://github.com/kimiyoung/transformer-xl.
"""
import torch
from torch import nn
# CUDA_MAJOR = int(torch.version.cuda.split('.')[0])
# CUDA_MINOR = int(torch.version.cuda.split('.')[1])
class ProjectedAdaptiveLogSoftmax(nn.Module):
def __init__(self, n_token, d_embed, d_proj, cutoffs, div_val=1, keep_order=False):
super().__init__()
self.n_token = n_token
self.d_embed = d_embed
self.d_proj = d_proj
self.cutoffs = cutoffs + [n_token]
self.cutoff_ends = [0] + self.cutoffs
self.div_val = div_val
self.shortlist_size = self.cutoffs[0]
self.n_clusters = len(self.cutoffs) - 1
self.head_size = self.shortlist_size + self.n_clusters
if self.n_clusters > 0:
self.cluster_weight = nn.Parameter(torch.zeros(self.n_clusters, self.d_embed))
self.cluster_bias = nn.Parameter(torch.zeros(self.n_clusters))
self.out_layers = nn.ModuleList()
self.out_projs = nn.ParameterList()
if div_val == 1:
for i in range(len(self.cutoffs)):
if d_proj != d_embed:
self.out_projs.append(nn.Parameter(torch.FloatTensor(d_proj, d_embed)))
else:
self.out_projs.append(None)
self.out_layers.append(nn.Linear(d_embed, n_token))
else:
for i in range(len(self.cutoffs)):
l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1]
d_emb_i = d_embed // (div_val**i)
self.out_projs.append(nn.Parameter(torch.FloatTensor(d_proj, d_emb_i)))
self.out_layers.append(nn.Linear(d_emb_i, r_idx - l_idx))
self.keep_order = keep_order
def _compute_logit(self, hidden, weight, bias, proj):
if proj is None:
logit = nn.functional.linear(hidden, weight, bias=bias)
else:
# if CUDA_MAJOR <= 9 and CUDA_MINOR <= 1:
proj_hid = nn.functional.linear(hidden, proj.t().contiguous())
logit = nn.functional.linear(proj_hid, weight, bias=bias)
# else:
# logit = torch.einsum('bd,de,ev->bv', (hidden, proj, weight.t()))
# if bias is not None:
# logit = logit + bias
return logit
def forward(self, hidden, labels=None, keep_order=False):
"""
Params:
hidden :: [len*bsz x d_proj]
labels :: [len*bsz]
Return:
if labels is None: out :: [len*bsz x n_tokens] log probabilities of tokens over the vocabulary else: out ::
[(len-1)*bsz] Negative log likelihood. We could replace this implementation by the native PyTorch one if
theirs had an option to set bias on all clusters in the native one. here:
https://github.com/pytorch/pytorch/blob/dbe6a7a9ff1a364a8706bf5df58a1ca96d2fd9da/torch/nn/modules/adaptive.py#L138
"""
if labels is not None:
# Shift so that tokens < n predict n
hidden = hidden[..., :-1, :].contiguous()
labels = labels[..., 1:].contiguous()
hidden = hidden.view(-1, hidden.size(-1))
labels = labels.view(-1)
if hidden.size(0) != labels.size(0):
raise RuntimeError("Input and labels should have the same size in the batch dimension.")
else:
hidden = hidden.view(-1, hidden.size(-1))
if self.n_clusters == 0:
logit = self._compute_logit(hidden, self.out_layers[0].weight, self.out_layers[0].bias, self.out_projs[0])
if labels is not None:
mask = labels != -100
out = torch.zeros_like(labels, dtype=hidden.dtype, device=hidden.device)
out[mask] = (
-nn.functional.log_softmax(logit, dim=-1)[mask].gather(1, labels[mask].unsqueeze(1)).squeeze(1)
)
else:
out = nn.functional.log_softmax(logit, dim=-1)
else:
# construct weights and biases
weights, biases = [], []
for i in range(len(self.cutoffs)):
if self.div_val == 1:
l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1]
weight_i = self.out_layers[0].weight[l_idx:r_idx]
bias_i = self.out_layers[0].bias[l_idx:r_idx]
else:
weight_i = self.out_layers[i].weight
bias_i = self.out_layers[i].bias
if i == 0:
weight_i = torch.cat([weight_i, self.cluster_weight], dim=0)
bias_i = torch.cat([bias_i, self.cluster_bias], dim=0)
weights.append(weight_i)
biases.append(bias_i)
head_weight, head_bias, head_proj = weights[0], biases[0], self.out_projs[0]
head_logit = self._compute_logit(hidden, head_weight, head_bias, head_proj)
head_logprob = nn.functional.log_softmax(head_logit, dim=1)
if labels is None:
out = hidden.new_empty((head_logit.size(0), self.n_token))
else:
out = torch.zeros_like(labels, dtype=hidden.dtype, device=hidden.device)
offset = 0
cutoff_values = [0] + self.cutoffs
for i in range(len(cutoff_values) - 1):
l_idx, r_idx = cutoff_values[i], cutoff_values[i + 1]
if labels is not None:
mask_i = (labels >= l_idx) & (labels < r_idx)
indices_i = mask_i.nonzero().squeeze()
if indices_i.numel() == 0:
continue
target_i = labels.index_select(0, indices_i) - l_idx
head_logprob_i = head_logprob.index_select(0, indices_i)
hidden_i = hidden.index_select(0, indices_i)
else:
hidden_i = hidden
if i == 0:
if labels is not None:
logprob_i = head_logprob_i.gather(1, target_i[:, None]).squeeze(1)
else:
out[:, : self.cutoffs[0]] = head_logprob[:, : self.cutoffs[0]]
else:
weight_i, bias_i, proj_i = weights[i], biases[i], self.out_projs[i]
tail_logit_i = self._compute_logit(hidden_i, weight_i, bias_i, proj_i)
tail_logprob_i = nn.functional.log_softmax(tail_logit_i, dim=1)
cluster_prob_idx = self.cutoffs[0] + i - 1 # No probability for the head cluster
if labels is not None:
logprob_i = head_logprob_i[:, cluster_prob_idx] + tail_logprob_i.gather(
1, target_i[:, None]
).squeeze(1)
else:
logprob_i = head_logprob[:, cluster_prob_idx, None] + tail_logprob_i
out[:, l_idx:r_idx] = logprob_i
if labels is not None:
if (hasattr(self, "keep_order") and self.keep_order) or keep_order:
out.index_copy_(0, indices_i, -logprob_i)
else:
out[offset : offset + logprob_i.size(0)].copy_(-logprob_i)
offset += logprob_i.size(0)
return out
def log_prob(self, hidden):
r"""
Computes log probabilities for all \\(n\_classes\\) From:
https://github.com/pytorch/pytorch/blob/master/torch/nn/modules/adaptive.p
Args:
hidden (Tensor): a minibatch of example
Returns:
log-probabilities of for each class \\(c\\) in range \\(0 <= c <= n\_classes\\), where \\(n\_classes\\) is
a parameter passed to `AdaptiveLogSoftmaxWithLoss` constructor. Shape:
- Input: \\((N, in\_features)\\)
- Output: \\((N, n\_classes)\\)
"""
if self.n_clusters == 0:
logit = self._compute_logit(hidden, self.out_layers[0].weight, self.out_layers[0].bias, self.out_projs[0])
return nn.functional.log_softmax(logit, dim=-1)
else:
# construct weights and biases
weights, biases = [], []
for i in range(len(self.cutoffs)):
if self.div_val == 1:
l_idx, r_idx = self.cutoff_ends[i], self.cutoff_ends[i + 1]
weight_i = self.out_layers[0].weight[l_idx:r_idx]
bias_i = self.out_layers[0].bias[l_idx:r_idx]
else:
weight_i = self.out_layers[i].weight
bias_i = self.out_layers[i].bias
if i == 0:
weight_i = torch.cat([weight_i, self.cluster_weight], dim=0)
bias_i = torch.cat([bias_i, self.cluster_bias], dim=0)
weights.append(weight_i)
biases.append(bias_i)
head_weight, head_bias, head_proj = weights[0], biases[0], self.out_projs[0]
head_logit = self._compute_logit(hidden, head_weight, head_bias, head_proj)
out = hidden.new_empty((head_logit.size(0), self.n_token))
head_logprob = nn.functional.log_softmax(head_logit, dim=1)
cutoff_values = [0] + self.cutoffs
for i in range(len(cutoff_values) - 1):
start_idx, stop_idx = cutoff_values[i], cutoff_values[i + 1]
if i == 0:
out[:, : self.cutoffs[0]] = head_logprob[:, : self.cutoffs[0]]
else:
weight_i, bias_i, proj_i = weights[i], biases[i], self.out_projs[i]
tail_logit_i = self._compute_logit(hidden, weight_i, bias_i, proj_i)
tail_logprob_i = nn.functional.log_softmax(tail_logit_i, dim=1)
logprob_i = head_logprob[:, -i] + tail_logprob_i
out[:, start_idx, stop_idx] = logprob_i
return out
|
transformers/src/transformers/models/deprecated/transfo_xl/modeling_transfo_xl_utilities.py/0
|
{
"file_path": "transformers/src/transformers/models/deprecated/transfo_xl/modeling_transfo_xl_utilities.py",
"repo_id": "transformers",
"token_count": 5686
}
| 349
|
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ...utils import (
OptionalDependencyNotAvailable,
_LazyModule,
is_flax_available,
is_tf_available,
is_tokenizers_available,
is_torch_available,
)
_import_structure = {
"configuration_electra": ["ElectraConfig", "ElectraOnnxConfig"],
"tokenization_electra": ["ElectraTokenizer"],
}
try:
if not is_tokenizers_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["tokenization_electra_fast"] = ["ElectraTokenizerFast"]
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_electra"] = [
"ElectraForCausalLM",
"ElectraForMaskedLM",
"ElectraForMultipleChoice",
"ElectraForPreTraining",
"ElectraForQuestionAnswering",
"ElectraForSequenceClassification",
"ElectraForTokenClassification",
"ElectraModel",
"ElectraPreTrainedModel",
"load_tf_weights_in_electra",
]
try:
if not is_tf_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_tf_electra"] = [
"TFElectraForMaskedLM",
"TFElectraForMultipleChoice",
"TFElectraForPreTraining",
"TFElectraForQuestionAnswering",
"TFElectraForSequenceClassification",
"TFElectraForTokenClassification",
"TFElectraModel",
"TFElectraPreTrainedModel",
]
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
_import_structure["modeling_flax_electra"] = [
"FlaxElectraForCausalLM",
"FlaxElectraForMaskedLM",
"FlaxElectraForMultipleChoice",
"FlaxElectraForPreTraining",
"FlaxElectraForQuestionAnswering",
"FlaxElectraForSequenceClassification",
"FlaxElectraForTokenClassification",
"FlaxElectraModel",
"FlaxElectraPreTrainedModel",
]
if TYPE_CHECKING:
from .configuration_electra import ElectraConfig, ElectraOnnxConfig
from .tokenization_electra import ElectraTokenizer
try:
if not is_tokenizers_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .tokenization_electra_fast import ElectraTokenizerFast
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_electra import (
ElectraForCausalLM,
ElectraForMaskedLM,
ElectraForMultipleChoice,
ElectraForPreTraining,
ElectraForQuestionAnswering,
ElectraForSequenceClassification,
ElectraForTokenClassification,
ElectraModel,
ElectraPreTrainedModel,
load_tf_weights_in_electra,
)
try:
if not is_tf_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_tf_electra import (
TFElectraForMaskedLM,
TFElectraForMultipleChoice,
TFElectraForPreTraining,
TFElectraForQuestionAnswering,
TFElectraForSequenceClassification,
TFElectraForTokenClassification,
TFElectraModel,
TFElectraPreTrainedModel,
)
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
pass
else:
from .modeling_flax_electra import (
FlaxElectraForCausalLM,
FlaxElectraForMaskedLM,
FlaxElectraForMultipleChoice,
FlaxElectraForPreTraining,
FlaxElectraForQuestionAnswering,
FlaxElectraForSequenceClassification,
FlaxElectraForTokenClassification,
FlaxElectraModel,
FlaxElectraPreTrainedModel,
)
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
|
transformers/src/transformers/models/electra/__init__.py/0
|
{
"file_path": "transformers/src/transformers/models/electra/__init__.py",
"repo_id": "transformers",
"token_count": 2068
}
| 350
|
# Copyright 2021 AlQuraishi Laboratory
# Copyright 2021 DeepMind Technologies Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Protein data type."""
import dataclasses
import re
import string
from typing import Any, Dict, Iterator, List, Mapping, Optional, Sequence, Tuple
import numpy as np
from . import residue_constants
FeatureDict = Mapping[str, np.ndarray]
ModelOutput = Mapping[str, Any] # Is a nested dict.
PICO_TO_ANGSTROM = 0.01
@dataclasses.dataclass(frozen=True)
class Protein:
"""Protein structure representation."""
# Cartesian coordinates of atoms in angstroms. The atom types correspond to
# residue_constants.atom_types, i.e. the first three are N, CA, CB.
atom_positions: np.ndarray # [num_res, num_atom_type, 3]
# Amino-acid type for each residue represented as an integer between 0 and
# 20, where 20 is 'X'.
aatype: np.ndarray # [num_res]
# Binary float mask to indicate presence of a particular atom. 1.0 if an atom
# is present and 0.0 if not. This should be used for loss masking.
atom_mask: np.ndarray # [num_res, num_atom_type]
# Residue index as used in PDB. It is not necessarily continuous or 0-indexed.
residue_index: np.ndarray # [num_res]
# B-factors, or temperature factors, of each residue (in sq. angstroms units),
# representing the displacement of the residue from its ground truth mean
# value.
b_factors: np.ndarray # [num_res, num_atom_type]
# Chain indices for multi-chain predictions
chain_index: Optional[np.ndarray] = None
# Optional remark about the protein. Included as a comment in output PDB
# files
remark: Optional[str] = None
# Templates used to generate this protein (prediction-only)
parents: Optional[Sequence[str]] = None
# Chain corresponding to each parent
parents_chain_index: Optional[Sequence[int]] = None
def from_proteinnet_string(proteinnet_str: str) -> Protein:
tag_re = r"(\[[A-Z]+\]\n)"
tags: List[str] = [tag.strip() for tag in re.split(tag_re, proteinnet_str) if len(tag) > 0]
groups: Iterator[Tuple[str, List[str]]] = zip(tags[0::2], [l.split("\n") for l in tags[1::2]])
atoms: List[str] = ["N", "CA", "C"]
aatype = None
atom_positions = None
atom_mask = None
for g in groups:
if "[PRIMARY]" == g[0]:
seq = g[1][0].strip()
for i in range(len(seq)):
if seq[i] not in residue_constants.restypes:
seq[i] = "X" # FIXME: strings are immutable
aatype = np.array(
[residue_constants.restype_order.get(res_symbol, residue_constants.restype_num) for res_symbol in seq]
)
elif "[TERTIARY]" == g[0]:
tertiary: List[List[float]] = []
for axis in range(3):
tertiary.append(list(map(float, g[1][axis].split())))
tertiary_np = np.array(tertiary)
atom_positions = np.zeros((len(tertiary[0]) // 3, residue_constants.atom_type_num, 3)).astype(np.float32)
for i, atom in enumerate(atoms):
atom_positions[:, residue_constants.atom_order[atom], :] = np.transpose(tertiary_np[:, i::3])
atom_positions *= PICO_TO_ANGSTROM
elif "[MASK]" == g[0]:
mask = np.array(list(map({"-": 0, "+": 1}.get, g[1][0].strip())))
atom_mask = np.zeros(
(
len(mask),
residue_constants.atom_type_num,
)
).astype(np.float32)
for i, atom in enumerate(atoms):
atom_mask[:, residue_constants.atom_order[atom]] = 1
atom_mask *= mask[..., None]
assert aatype is not None
return Protein(
atom_positions=atom_positions,
atom_mask=atom_mask,
aatype=aatype,
residue_index=np.arange(len(aatype)),
b_factors=None,
)
def get_pdb_headers(prot: Protein, chain_id: int = 0) -> List[str]:
pdb_headers: List[str] = []
remark = prot.remark
if remark is not None:
pdb_headers.append(f"REMARK {remark}")
parents = prot.parents
parents_chain_index = prot.parents_chain_index
if parents is not None and parents_chain_index is not None:
parents = [p for i, p in zip(parents_chain_index, parents) if i == chain_id]
if parents is None or len(parents) == 0:
parents = ["N/A"]
pdb_headers.append(f"PARENT {' '.join(parents)}")
return pdb_headers
def add_pdb_headers(prot: Protein, pdb_str: str) -> str:
"""Add pdb headers to an existing PDB string. Useful during multi-chain
recycling
"""
out_pdb_lines: List[str] = []
lines = pdb_str.split("\n")
remark = prot.remark
if remark is not None:
out_pdb_lines.append(f"REMARK {remark}")
parents_per_chain: List[List[str]]
if prot.parents is not None and len(prot.parents) > 0:
parents_per_chain = []
if prot.parents_chain_index is not None:
parent_dict: Dict[str, List[str]] = {}
for p, i in zip(prot.parents, prot.parents_chain_index):
parent_dict.setdefault(str(i), [])
parent_dict[str(i)].append(p)
max_idx = max([int(chain_idx) for chain_idx in parent_dict])
for i in range(max_idx + 1):
chain_parents = parent_dict.get(str(i), ["N/A"])
parents_per_chain.append(chain_parents)
else:
parents_per_chain.append(list(prot.parents))
else:
parents_per_chain = [["N/A"]]
def make_parent_line(p: Sequence[str]) -> str:
return f"PARENT {' '.join(p)}"
out_pdb_lines.append(make_parent_line(parents_per_chain[0]))
chain_counter = 0
for i, l in enumerate(lines):
if "PARENT" not in l and "REMARK" not in l:
out_pdb_lines.append(l)
if "TER" in l and "END" not in lines[i + 1]:
chain_counter += 1
if not chain_counter >= len(parents_per_chain):
chain_parents = parents_per_chain[chain_counter]
else:
chain_parents = ["N/A"]
out_pdb_lines.append(make_parent_line(chain_parents))
return "\n".join(out_pdb_lines)
def to_pdb(prot: Protein) -> str:
"""Converts a `Protein` instance to a PDB string.
Args:
prot: The protein to convert to PDB.
Returns:
PDB string.
"""
restypes = residue_constants.restypes + ["X"]
def res_1to3(r: int) -> str:
return residue_constants.restype_1to3.get(restypes[r], "UNK")
atom_types = residue_constants.atom_types
pdb_lines: List[str] = []
atom_mask = prot.atom_mask
aatype = prot.aatype
atom_positions = prot.atom_positions
residue_index = prot.residue_index.astype(np.int32)
b_factors = prot.b_factors
chain_index = prot.chain_index
if np.any(aatype > residue_constants.restype_num):
raise ValueError("Invalid aatypes.")
headers = get_pdb_headers(prot)
if len(headers) > 0:
pdb_lines.extend(headers)
n = aatype.shape[0]
atom_index = 1
prev_chain_index = 0
chain_tags = string.ascii_uppercase
chain_tag = None
# Add all atom sites.
for i in range(n):
res_name_3 = res_1to3(aatype[i])
for atom_name, pos, mask, b_factor in zip(atom_types, atom_positions[i], atom_mask[i], b_factors[i]):
if mask < 0.5:
continue
record_type = "ATOM"
name = atom_name if len(atom_name) == 4 else f" {atom_name}"
alt_loc = ""
insertion_code = ""
occupancy = 1.00
element = atom_name[0] # Protein supports only C, N, O, S, this works.
charge = ""
chain_tag = "A"
if chain_index is not None:
chain_tag = chain_tags[chain_index[i]]
# PDB is a columnar format, every space matters here!
atom_line = (
f"{record_type:<6}{atom_index:>5} {name:<4}{alt_loc:>1}"
f"{res_name_3:>3} {chain_tag:>1}"
f"{residue_index[i]:>4}{insertion_code:>1} "
f"{pos[0]:>8.3f}{pos[1]:>8.3f}{pos[2]:>8.3f}"
f"{occupancy:>6.2f}{b_factor:>6.2f} "
f"{element:>2}{charge:>2}"
)
pdb_lines.append(atom_line)
atom_index += 1
should_terminate = i == n - 1
if chain_index is not None:
if i != n - 1 and chain_index[i + 1] != prev_chain_index:
should_terminate = True
prev_chain_index = chain_index[i + 1]
if should_terminate:
# Close the chain.
chain_end = "TER"
chain_termination_line = (
f"{chain_end:<6}{atom_index:>5} {res_1to3(aatype[i]):>3} {chain_tag:>1}{residue_index[i]:>4}"
)
pdb_lines.append(chain_termination_line)
atom_index += 1
if i != n - 1:
# "prev" is a misnomer here. This happens at the beginning of
# each new chain.
pdb_lines.extend(get_pdb_headers(prot, prev_chain_index))
pdb_lines.append("END")
pdb_lines.append("")
return "\n".join(pdb_lines)
def ideal_atom_mask(prot: Protein) -> np.ndarray:
"""Computes an ideal atom mask.
`Protein.atom_mask` typically is defined according to the atoms that are reported in the PDB. This function
computes a mask according to heavy atoms that should be present in the given sequence of amino acids.
Args:
prot: `Protein` whose fields are `numpy.ndarray` objects.
Returns:
An ideal atom mask.
"""
return residue_constants.STANDARD_ATOM_MASK[prot.aatype]
def from_prediction(
features: FeatureDict,
result: ModelOutput,
b_factors: Optional[np.ndarray] = None,
chain_index: Optional[np.ndarray] = None,
remark: Optional[str] = None,
parents: Optional[Sequence[str]] = None,
parents_chain_index: Optional[Sequence[int]] = None,
) -> Protein:
"""Assembles a protein from a prediction.
Args:
features: Dictionary holding model inputs.
result: Dictionary holding model outputs.
b_factors: (Optional) B-factors to use for the protein.
chain_index: (Optional) Chain indices for multi-chain predictions
remark: (Optional) Remark about the prediction
parents: (Optional) List of template names
Returns:
A protein instance.
"""
return Protein(
aatype=features["aatype"],
atom_positions=result["final_atom_positions"],
atom_mask=result["final_atom_mask"],
residue_index=features["residue_index"] + 1,
b_factors=b_factors if b_factors is not None else np.zeros_like(result["final_atom_mask"]),
chain_index=chain_index,
remark=remark,
parents=parents,
parents_chain_index=parents_chain_index,
)
|
transformers/src/transformers/models/esm/openfold_utils/protein.py/0
|
{
"file_path": "transformers/src/transformers/models/esm/openfold_utils/protein.py",
"repo_id": "transformers",
"token_count": 5076
}
| 351
|
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert FastSpeech2Conformer checkpoint."""
import argparse
import torch
from transformers import (
FastSpeech2ConformerConfig,
FastSpeech2ConformerHifiGan,
FastSpeech2ConformerHifiGanConfig,
FastSpeech2ConformerModel,
FastSpeech2ConformerWithHifiGan,
FastSpeech2ConformerWithHifiGanConfig,
logging,
)
from .convert_fastspeech2_conformer_original_pytorch_checkpoint_to_pytorch import (
convert_espnet_state_dict_to_hf,
remap_model_yaml_config,
)
from .convert_hifigan import load_weights, remap_hifigan_yaml_config
logging.set_verbosity_info()
logger = logging.get_logger("transformers.models.FastSpeech2Conformer")
def convert_FastSpeech2ConformerWithHifiGan_checkpoint(
checkpoint_path,
yaml_config_path,
pytorch_dump_folder_path,
repo_id=None,
):
# Prepare the model
model_params, *_ = remap_model_yaml_config(yaml_config_path)
model_config = FastSpeech2ConformerConfig(**model_params)
model = FastSpeech2ConformerModel(model_config)
espnet_checkpoint = torch.load(checkpoint_path)
hf_compatible_state_dict = convert_espnet_state_dict_to_hf(espnet_checkpoint)
model.load_state_dict(hf_compatible_state_dict)
# Prepare the vocoder
config_kwargs = remap_hifigan_yaml_config(yaml_config_path)
vocoder_config = FastSpeech2ConformerHifiGanConfig(**config_kwargs)
vocoder = FastSpeech2ConformerHifiGan(vocoder_config)
load_weights(espnet_checkpoint, vocoder, vocoder_config)
# Prepare the model + vocoder
config = FastSpeech2ConformerWithHifiGanConfig.from_sub_model_configs(model_config, vocoder_config)
with_hifigan_model = FastSpeech2ConformerWithHifiGan(config)
with_hifigan_model.model = model
with_hifigan_model.vocoder = vocoder
with_hifigan_model.save_pretrained(pytorch_dump_folder_path)
if repo_id:
print("Pushing to the hub...")
with_hifigan_model.push_to_hub(repo_id)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--checkpoint_path", required=True, default=None, type=str, help="Path to original checkpoint")
parser.add_argument(
"--yaml_config_path", required=True, default=None, type=str, help="Path to config.yaml of model to convert"
)
parser.add_argument(
"--pytorch_dump_folder_path",
required=True,
default=None,
type=str,
help="Path to the output `FastSpeech2ConformerModel` PyTorch model.",
)
parser.add_argument(
"--push_to_hub", default=None, type=str, help="Where to upload the converted model on the 🤗 hub."
)
args = parser.parse_args()
convert_FastSpeech2ConformerWithHifiGan_checkpoint(
args.checkpoint_path,
args.yaml_config_path,
args.pytorch_dump_folder_path,
args.push_to_hub,
)
|
transformers/src/transformers/models/fastspeech2_conformer/convert_model_with_hifigan.py/0
|
{
"file_path": "transformers/src/transformers/models/fastspeech2_conformer/convert_model_with_hifigan.py",
"repo_id": "transformers",
"token_count": 1299
}
| 352
|
# coding=utf-8
# Copyright 2020, Hugging Face
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Funnel Transformer model configuration"""
from ...configuration_utils import PretrainedConfig
from ...utils import logging
logger = logging.get_logger(__name__)
class FunnelConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`FunnelModel`] or a [`TFBertModel`]. It is used to
instantiate a Funnel Transformer model according to the specified arguments, defining the model architecture.
Instantiating a configuration with the defaults will yield a similar configuration to that of the Funnel
Transformer [funnel-transformer/small](https://huggingface.co/funnel-transformer/small) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 30522):
Vocabulary size of the Funnel transformer. Defines the number of different tokens that can be represented
by the `inputs_ids` passed when calling [`FunnelModel`] or [`TFFunnelModel`].
block_sizes (`List[int]`, *optional*, defaults to `[4, 4, 4]`):
The sizes of the blocks used in the model.
block_repeats (`List[int]`, *optional*):
If passed along, each layer of each block is repeated the number of times indicated.
num_decoder_layers (`int`, *optional*, defaults to 2):
The number of layers in the decoder (when not using the base model).
d_model (`int`, *optional*, defaults to 768):
Dimensionality of the model's hidden states.
n_head (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
d_head (`int`, *optional*, defaults to 64):
Dimensionality of the model's heads.
d_inner (`int`, *optional*, defaults to 3072):
Inner dimension in the feed-forward blocks.
hidden_act (`str` or `callable`, *optional*, defaults to `"gelu_new"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
hidden_dropout (`float`, *optional*, defaults to 0.1):
The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
attention_dropout (`float`, *optional*, defaults to 0.1):
The dropout probability for the attention probabilities.
activation_dropout (`float`, *optional*, defaults to 0.0):
The dropout probability used between the two layers of the feed-forward blocks.
initializer_range (`float`, *optional*, defaults to 0.1):
The upper bound of the *uniform initializer* for initializing all weight matrices in attention layers.
initializer_std (`float`, *optional*):
The standard deviation of the *normal initializer* for initializing the embedding matrix and the weight of
linear layers. Will default to 1 for the embedding matrix and the value given by Xavier initialization for
linear layers.
layer_norm_eps (`float`, *optional*, defaults to 1e-09):
The epsilon used by the layer normalization layers.
pooling_type (`str`, *optional*, defaults to `"mean"`):
Possible values are `"mean"` or `"max"`. The way pooling is performed at the beginning of each block.
attention_type (`str`, *optional*, defaults to `"relative_shift"`):
Possible values are `"relative_shift"` or `"factorized"`. The former is faster on CPU/GPU while the latter
is faster on TPU.
separate_cls (`bool`, *optional*, defaults to `True`):
Whether or not to separate the cls token when applying pooling.
truncate_seq (`bool`, *optional*, defaults to `True`):
When using `separate_cls`, whether or not to truncate the last token when pooling, to avoid getting a
sequence length that is not a multiple of 2.
pool_q_only (`bool`, *optional*, defaults to `True`):
Whether or not to apply the pooling only to the query or to query, key and values for the attention layers.
"""
model_type = "funnel"
attribute_map = {
"hidden_size": "d_model",
"num_attention_heads": "n_head",
}
def __init__(
self,
vocab_size=30522,
block_sizes=[4, 4, 4],
block_repeats=None,
num_decoder_layers=2,
d_model=768,
n_head=12,
d_head=64,
d_inner=3072,
hidden_act="gelu_new",
hidden_dropout=0.1,
attention_dropout=0.1,
activation_dropout=0.0,
initializer_range=0.1,
initializer_std=None,
layer_norm_eps=1e-9,
pooling_type="mean",
attention_type="relative_shift",
separate_cls=True,
truncate_seq=True,
pool_q_only=True,
**kwargs,
):
self.vocab_size = vocab_size
self.block_sizes = block_sizes
self.block_repeats = [1] * len(block_sizes) if block_repeats is None else block_repeats
assert len(block_sizes) == len(
self.block_repeats
), "`block_sizes` and `block_repeats` should have the same length."
self.num_decoder_layers = num_decoder_layers
self.d_model = d_model
self.n_head = n_head
self.d_head = d_head
self.d_inner = d_inner
self.hidden_act = hidden_act
self.hidden_dropout = hidden_dropout
self.attention_dropout = attention_dropout
self.activation_dropout = activation_dropout
self.initializer_range = initializer_range
self.initializer_std = initializer_std
self.layer_norm_eps = layer_norm_eps
assert pooling_type in [
"mean",
"max",
], f"Got {pooling_type} for `pooling_type` but only 'mean' and 'max' are supported."
self.pooling_type = pooling_type
assert attention_type in [
"relative_shift",
"factorized",
], f"Got {attention_type} for `attention_type` but only 'relative_shift' and 'factorized' are supported."
self.attention_type = attention_type
self.separate_cls = separate_cls
self.truncate_seq = truncate_seq
self.pool_q_only = pool_q_only
super().__init__(**kwargs)
@property
def num_hidden_layers(self):
return sum(self.block_sizes)
@num_hidden_layers.setter
def num_hidden_layers(self, value):
raise NotImplementedError(
"This model does not support the setting of `num_hidden_layers`. Please set `block_sizes`."
)
@property
def num_blocks(self):
return len(self.block_sizes)
@num_blocks.setter
def num_blocks(self, value):
raise NotImplementedError("This model does not support the setting of `num_blocks`. Please set `block_sizes`.")
|
transformers/src/transformers/models/funnel/configuration_funnel.py/0
|
{
"file_path": "transformers/src/transformers/models/funnel/configuration_funnel.py",
"repo_id": "transformers",
"token_count": 2958
}
| 353
|
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