ImageRewardDB.py

# Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor.
#
# 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.
# TODO: Address all TODOs and remove all explanatory comments
"""TODO: Add a description here."""


import pandas as pd
import json
import os

import datasets
from huggingface_hub import hf_hub_url


# TODO: Add BibTeX citation
# Find for instance the citation on arxiv or on the dataset repo/website
_CITATION = """\
@InProceedings{huggingface:dataset,
title = {A great new dataset},
author={huggingface, Inc.
},
year={2020}
}
"""

# TODO: Add description of the dataset here
# You can copy an official description
_DESCRIPTION = """\
This new dataset is designed to solve this great NLP task and is crafted with a lot of care.
"""

# TODO: Add a link to an official homepage for the dataset here
_HOMEPAGE = "https://huggingface.co/datasets/wuyuchen/ImageRewardDB"
_VERSION = datasets.Version("1.0.0")

# TODO: Add the licence for the dataset here if you can find it
_LICENSE = ""

# TODO: Add link to the official dataset URLs here
# The HuggingFace Datasets library doesn't host the datasets but only points to the original files.
# This can be an arbitrary nested dict/list of URLs (see below in `_split_generators` method)
_REPO_ID = "wuyuchen/ImageRewardDB"
_URLS = {}
_PART_IDS = {
    "train": 32,
    "validation": 2,
    "test": 2
}

for name in list(_PART_IDS.keys()):
    _URLS[name] = {}
    for i in range(1, _PART_IDS[name]+1):
        _URLS[name][i] = hf_hub_url(
            _REPO_ID,
            filename=f"images/{name}/{name}_{i}.zip",
            repo_type="dataset"
        )
    _URLS[name]["metadata"] = hf_hub_url(
        _REPO_ID,
        filename=f"metadata-{name}.parquet",
        repo_type="dataset"
    )

class ImageRewardDBConfig(datasets.BuilderConfig):
    '''BuilderConfig for ImageRewardDB'''
    
    def __init__(self, part_ids, **kwargs):
        '''BuilderConfig for ImageRewardDB
        Args:
            part_ids([int]): A list of part_ids.
            **kwargs: keyword arguments forwarded to super
        '''
        super(ImageRewardDBConfig, self).__init__(version=_VERSION, **kwargs)
        self.part_ids = part_ids

# TODO: Name of the dataset usually matches the script name with CamelCase instead of snake_case
class ImageRewardDB(datasets.GeneratorBasedBuilder):
    """TODO: Short description of my dataset."""

    # This is an example of a dataset with multiple configurations.
    # If you don't want/need to define several sub-sets in your dataset,
    # just remove the BUILDER_CONFIG_CLASS and the BUILDER_CONFIGS attributes.

    # If you need to make complex sub-parts in the datasets with configurable options
    # You can create your own builder configuration class to store attribute, inheriting from datasets.BuilderConfig
    # BUILDER_CONFIG_CLASS = MyBuilderConfig

    # You will be able to load one or the other configurations in the following list with
    # data = datasets.load_dataset('my_dataset', 'first_domain')
    # data = datasets.load_dataset('my_dataset', 'second_domain')
    BUILDER_CONFIGS = []
    
    for num_k in [1,2,4,8]:
        part_ids = {
            "train": 4*num_k,
            "validation": 2,
            "test": 2
        }
        BUILDER_CONFIGS.append(
            ImageRewardDBConfig(name=f"{num_k}k", part_ids=part_ids, description=f"This is a {num_k}k-scale ImageRewardDB")
        )

    DEFAULT_CONFIG_NAME = "8k"  # It's not mandatory to have a default configuration. Just use one if it make sense.

    def _info(self):
        # TODO: This method specifies the datasets.DatasetInfo object which contains informations and typings for the dataset
        features = datasets.Features(
            {
                "image": datasets.Image(),
                "prompt_id": datasets.Value("string"),
                "prompt": datasets.Value("string"),
                "classification": datasets.Value("string"),
                "image_amount_in_total": datasets.Value("int8"),
                "rank": datasets.Value("int8"),
                "overall_rating": datasets.Value("int8"),
                "image_text_alignment_rating": datasets.Value("int8"),
                "fidelity_rating": datasets.Value("int8")
            }
        )
        return datasets.DatasetInfo(
            # This is the description that will appear on the datasets page.
            description=_DESCRIPTION,
            # This defines the different columns of the dataset and their types
            features=features,  # Here we define them above because they are different between the two configurations
            # If there's a common (input, target) tuple from the features, uncomment supervised_keys line below and
            # specify them. They'll be used if as_supervised=True in builder.as_dataset.
            # supervised_keys=("sentence", "label"),
            # Homepage of the dataset for documentation
            homepage=_HOMEPAGE,
            # License for the dataset if available
            license=_LICENSE,
            # Citation for the dataset
            citation=_CITATION,
        )

    def _split_generators(self, dl_manager):
        # TODO: This method is tasked with downloading/extracting the data and defining the splits depending on the configuration
        # If several configurations are possible (listed in BUILDER_CONFIGS), the configuration selected by the user is in self.config.name

        # dl_manager is a datasets.download.DownloadManager that can be used to download and extract URLS
        # It can accept any type or nested list/dict and will give back the same structure with the url replaced with path to local files.
        # By default the archives will be extracted and a path to a cached folder where they are extracted is returned instead of the archive
        data_dirs = {name: [] for name in list(_PART_IDS.keys())}
        json_paths = {name: [] for name in list(_PART_IDS.keys())}
        metadata_paths = {name: [] for name in list(_PART_IDS.keys())}
        for key in list(self.config.part_ids.keys()):
            for i in range(1, self.config.part_ids[key]+1):
                data_dir = dl_manager.download_and_extract(_URLS[key][i])
                data_dirs[key].append(data_dir)
                json_paths[key].append(os.path.join(data_dir, f"{key}_{i}.json"))
            metadata_paths[key] = dl_manager.download(_URLS[key]["metadata"])
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={
                    "split": "train",
                    "data_dirs": data_dirs["train"],
                    "json_paths": json_paths["train"],
                    "metadata_path": metadata_paths["train"]
                },
            ),
            datasets.SplitGenerator(
                name=datasets.Split.VALIDATION,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={
                    "split": "validation",
                    "data_dirs": data_dirs["validation"],
                    "json_paths": json_paths["validation"],
                    "metadata_path": metadata_paths["validation"]
                },
            ),
            datasets.SplitGenerator(
                name=datasets.Split.TEST,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={
                    "split": "test",
                    "data_dirs": data_dirs["test"],
                    "json_paths": json_paths["test"],
                    "metadata_path": metadata_paths["test"]
                },
            ),
        ]

    # method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
    def _generate_examples(self, split, data_dirs, json_paths, metadata_path):
        # TODO: This method handles input defined in _split_generators to yield (key, example) tuples from the dataset.
        # The `key` is for legacy reasons (tfds) and is not important in itself, but must be unique for each example.
        
        num_data_dirs = len(data_dirs)
        assert num_data_dirs == len(json_paths)
        
        #Iterate throug all extracted zip folders for images
        for index, json_path in enumerate(json_paths):
           json_data = json.load(open(json_path, "r", encoding="utf-8"))
           for example in json_data:
               image_path = os.path.join(data_dirs[index], str(example["image_path"]).split("/")[-1])
               yield example["image_path"], {
                   "image": {
                       "path": image_path,
                       "bytes": open(image_path, "rb").read()
                   },
                   "prompt_id": example["prompt_id"],
                   "prompt": example["prompt"],
                   "classification": example["classification"],
                   "image_amount_in_total": example["image_amount_in_total"],
                   "rank": example["rank"],
                   "overall_rating": example["overall_rating"],
                   "image_text_alignment_rating": example["image_text_alignment_rating"],
                   "fidelity_rating": example["fidelity_rating"]
               }