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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. +"""Feature extractor class for PoolFormer.""" + +import warnings + +from ...utils import logging +from .image_processing_poolformer import PoolFormerImageProcessor + + +logger = logging.get_logger(__name__) + + +class PoolFormerFeatureExtractor(PoolFormerImageProcessor): + def __init__(self, *args, **kwargs) -> None: + warnings.warn( + "The class PoolFormerFeatureExtractor is deprecated and will be removed in version 5 of Transformers." + " Please use PoolFormerImageProcessor instead.", + FutureWarning, + ) + super().__init__(*args, **kwargs) diff --git a/evalkit_tf433/lib/python3.10/site-packages/transformers/models/poolformer/modeling_poolformer.py b/evalkit_tf433/lib/python3.10/site-packages/transformers/models/poolformer/modeling_poolformer.py new file mode 100644 index 0000000000000000000000000000000000000000..6acc8ec98e6939447179fb5f46e66d164e8ff289 --- /dev/null +++ b/evalkit_tf433/lib/python3.10/site-packages/transformers/models/poolformer/modeling_poolformer.py @@ -0,0 +1,455 @@ +# coding=utf-8 +# Copyright 2022 Sea AI Lab 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. +""" PyTorch PoolFormer model.""" + + +import collections.abc +from typing import 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_outputs import BaseModelOutputWithNoAttention, ImageClassifierOutputWithNoAttention +from ...modeling_utils import PreTrainedModel +from ...utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging +from .configuration_poolformer import PoolFormerConfig + + +logger = logging.get_logger(__name__) + +# General docstring +_CONFIG_FOR_DOC = "PoolFormerConfig" + +# Base docstring +_CHECKPOINT_FOR_DOC = "sail/poolformer_s12" +_EXPECTED_OUTPUT_SHAPE = [1, 512, 7, 7] + +# Image classification docstring +_IMAGE_CLASS_CHECKPOINT = "sail/poolformer_s12" +_IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat" + +POOLFORMER_PRETRAINED_MODEL_ARCHIVE_LIST = [ + "sail/poolformer_s12", + # See all PoolFormer models at https://huggingface.co/models?filter=poolformer +] + + +# Copied from transformers.models.beit.modeling_beit.drop_path +def drop_path(input: torch.Tensor, drop_prob: float = 0.0, training: bool = False) -> torch.Tensor: + """ + Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks). + + Comment by Ross Wightman: This is the same as the DropConnect impl I created for EfficientNet, etc networks, + however, the original name is misleading as 'Drop Connect' is a different form of dropout in a separate paper... + See discussion: https://github.com/tensorflow/tpu/issues/494#issuecomment-532968956 ... I've opted for changing the + layer and argument names to 'drop path' rather than mix DropConnect as a layer name and use 'survival rate' as the + argument. + """ + if drop_prob == 0.0 or not training: + return input + keep_prob = 1 - drop_prob + shape = (input.shape[0],) + (1,) * (input.ndim - 1) # work with diff dim tensors, not just 2D ConvNets + random_tensor = keep_prob + torch.rand(shape, dtype=input.dtype, device=input.device) + random_tensor.floor_() # binarize + output = input.div(keep_prob) * random_tensor + return output + + +# Copied from transformers.models.beit.modeling_beit.BeitDropPath with Beit->PoolFormer +class PoolFormerDropPath(nn.Module): + """Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks).""" + + def __init__(self, drop_prob: Optional[float] = None) -> None: + super().__init__() + self.drop_prob = drop_prob + + def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: + return drop_path(hidden_states, self.drop_prob, self.training) + + def extra_repr(self) -> str: + return "p={}".format(self.drop_prob) + + +class PoolFormerEmbeddings(nn.Module): + """ + Construct Patch Embeddings. + """ + + def __init__(self, hidden_size, num_channels, patch_size, stride, padding, norm_layer=None): + super().__init__() + patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size) + stride = stride if isinstance(stride, collections.abc.Iterable) else (stride, stride) + padding = padding if isinstance(padding, collections.abc.Iterable) else (padding, padding) + + self.projection = nn.Conv2d(num_channels, hidden_size, kernel_size=patch_size, stride=stride, padding=padding) + self.norm = norm_layer(hidden_size) if norm_layer else nn.Identity() + + def forward(self, pixel_values): + embeddings = self.projection(pixel_values) + embeddings = self.norm(embeddings) + return embeddings + + +class PoolFormerGroupNorm(nn.GroupNorm): + """ + Group Normalization with 1 group. Input: tensor in shape [B, C, H, W] + """ + + def __init__(self, num_channels, **kwargs): + super().__init__(1, num_channels, **kwargs) + + +class PoolFormerPooling(nn.Module): + def __init__(self, pool_size): + super().__init__() + self.pool = nn.AvgPool2d(pool_size, stride=1, padding=pool_size // 2, count_include_pad=False) + + def forward(self, hidden_states): + return self.pool(hidden_states) - hidden_states + + +class PoolFormerOutput(nn.Module): + def __init__(self, config, dropout_prob, hidden_size, intermediate_size): + super().__init__() + self.conv1 = nn.Conv2d(hidden_size, intermediate_size, 1) + self.conv2 = nn.Conv2d(intermediate_size, hidden_size, 1) + self.drop = PoolFormerDropPath(dropout_prob) + if isinstance(config.hidden_act, str): + self.act_fn = ACT2FN[config.hidden_act] + else: + self.act_fn = config.hidden_act + + def forward(self, hidden_states): + hidden_states = self.conv1(hidden_states) + hidden_states = self.act_fn(hidden_states) + hidden_states = self.drop(hidden_states) + hidden_states = self.conv2(hidden_states) + hidden_states = self.drop(hidden_states) + + return hidden_states + + +class PoolFormerLayer(nn.Module): + """This corresponds to the 'PoolFormerBlock' class in the original implementation.""" + + def __init__(self, config, num_channels, pool_size, hidden_size, intermediate_size, drop_path): + super().__init__() + self.pooling = PoolFormerPooling(pool_size) + self.output = PoolFormerOutput(config, drop_path, hidden_size, intermediate_size) + self.before_norm = PoolFormerGroupNorm(num_channels) + self.after_norm = PoolFormerGroupNorm(num_channels) + + # Useful for training neural nets + self.drop_path = PoolFormerDropPath(drop_path) if drop_path > 0.0 else nn.Identity() + self.use_layer_scale = config.use_layer_scale + if config.use_layer_scale: + self.layer_scale_1 = nn.Parameter( + config.layer_scale_init_value * torch.ones((num_channels)), requires_grad=True + ) + self.layer_scale_2 = nn.Parameter( + config.layer_scale_init_value * torch.ones((num_channels)), requires_grad=True + ) + + def forward(self, hidden_states): + if self.use_layer_scale: + pooling_output = self.pooling(self.before_norm(hidden_states)) + scaled_op = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) * pooling_output + # First residual connection + hidden_states = hidden_states + self.drop_path(scaled_op) + outputs = () + + layer_output = self.output(self.after_norm(hidden_states)) + scaled_op = self.layer_scale_2.unsqueeze(-1).unsqueeze(-1) * layer_output + # Second residual connection + output = hidden_states + self.drop_path(scaled_op) + + outputs = (output,) + outputs + return outputs + + else: + pooling_output = self.drop_path(self.pooling(self.before_norm(hidden_states))) + # First residual connection + hidden_states = pooling_output + hidden_states + outputs = () + + # Second residual connection inside the PoolFormerOutput block + layer_output = self.drop_path(self.output(self.after_norm(hidden_states))) + output = hidden_states + layer_output + + outputs = (output,) + outputs + return outputs + + +class PoolFormerEncoder(nn.Module): + def __init__(self, config): + super().__init__() + self.config = config + # stochastic depth decay rule + dpr = [x.item() for x in torch.linspace(0, config.drop_path_rate, sum(config.depths))] + + # patch embeddings + embeddings = [] + for i in range(config.num_encoder_blocks): + embeddings.append( + PoolFormerEmbeddings( + patch_size=config.patch_sizes[i], + stride=config.strides[i], + padding=config.padding[i], + num_channels=config.num_channels if i == 0 else config.hidden_sizes[i - 1], + hidden_size=config.hidden_sizes[i], + ) + ) + self.patch_embeddings = nn.ModuleList(embeddings) + + # Transformer blocks + blocks = [] + cur = 0 + for i in range(config.num_encoder_blocks): + # each block consists of layers + layers = [] + if i != 0: + cur += config.depths[i - 1] + for j in range(config.depths[i]): + layers.append( + PoolFormerLayer( + config, + num_channels=config.hidden_sizes[i], + pool_size=config.pool_size, + hidden_size=config.hidden_sizes[i], + intermediate_size=int(config.hidden_sizes[i] * config.mlp_ratio), + drop_path=dpr[cur + j], + ) + ) + blocks.append(nn.ModuleList(layers)) + + self.block = nn.ModuleList(blocks) + + def forward(self, pixel_values, output_hidden_states=False, return_dict=True): + all_hidden_states = () if output_hidden_states else None + + hidden_states = pixel_values + for idx, layers in enumerate(zip(self.patch_embeddings, self.block)): + embedding_layer, block_layer = layers + # Get patch embeddings from hidden_states + hidden_states = embedding_layer(hidden_states) + # Send the embeddings through the blocks + for _, blk in enumerate(block_layer): + layer_outputs = blk(hidden_states) + hidden_states = layer_outputs[0] + + 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] if v is not None) + + return BaseModelOutputWithNoAttention(last_hidden_state=hidden_states, hidden_states=all_hidden_states) + + +class PoolFormerPreTrainedModel(PreTrainedModel): + """ + An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained + models. + """ + + config_class = PoolFormerConfig + base_model_prefix = "poolformer" + main_input_name = "pixel_values" + supports_gradient_checkpointing = True + + def _init_weights(self, module): + """Initialize the weights""" + if isinstance(module, (nn.Linear, nn.Conv2d)): + module.weight.data.normal_(mean=0.0, std=self.config.initializer_range) + if module.bias is not None: + module.bias.data.zero_() + elif isinstance(module, nn.LayerNorm): + module.bias.data.zero_() + module.weight.data.fill_(1.0) + + def _set_gradient_checkpointing(self, module, value=False): + if isinstance(module, PoolFormerEncoder): + module.gradient_checkpointing = value + + +POOLFORMER_START_DOCSTRING = r""" + This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use + it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and + behavior. + + Parameters: + config ([`PoolFormerConfig`]): 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. +""" + +POOLFORMER_INPUTS_DOCSTRING = r""" + Args: + pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): + Pixel values. Pixel values can be obtained using [`AutoImageProcessor`]. See + [`PoolFormerImageProcessor.__call__`] for details. +""" + + +@add_start_docstrings( + "The bare PoolFormer Model transformer outputting raw hidden-states without any specific head on top.", + POOLFORMER_START_DOCSTRING, +) +class PoolFormerModel(PoolFormerPreTrainedModel): + def __init__(self, config): + super().__init__(config) + self.config = config + + self.encoder = PoolFormerEncoder(config) + + # Initialize weights and apply final processing + self.post_init() + + def get_input_embeddings(self): + return self.embeddings.patch_embeddings + + @add_start_docstrings_to_model_forward(POOLFORMER_INPUTS_DOCSTRING) + @add_code_sample_docstrings( + checkpoint=_CHECKPOINT_FOR_DOC, + output_type=BaseModelOutputWithNoAttention, + config_class=_CONFIG_FOR_DOC, + modality="vision", + expected_output=_EXPECTED_OUTPUT_SHAPE, + ) + def forward( + self, + pixel_values: Optional[torch.FloatTensor] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, BaseModelOutputWithNoAttention]: + 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 pixel_values is None: + raise ValueError("You have to specify pixel_values") + + encoder_outputs = self.encoder( + pixel_values, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + sequence_output = encoder_outputs[0] + + if not return_dict: + return (sequence_output, None) + encoder_outputs[1:] + + return BaseModelOutputWithNoAttention( + last_hidden_state=sequence_output, + hidden_states=encoder_outputs.hidden_states, + ) + + +class PoolFormerFinalPooler(nn.Module): + def __init__(self, config): + super().__init__() + self.dense = nn.Linear(config.hidden_size, config.hidden_size) + + def forward(self, hidden_states): + output = self.dense(hidden_states) + return output + + +@add_start_docstrings( + """ + PoolFormer Model transformer with an image classification head on top + """, + POOLFORMER_START_DOCSTRING, +) +class PoolFormerForImageClassification(PoolFormerPreTrainedModel): + def __init__(self, config): + super().__init__(config) + self.num_labels = config.num_labels + self.poolformer = PoolFormerModel(config) + + # Final norm + self.norm = PoolFormerGroupNorm(config.hidden_sizes[-1]) + # Classifier head + self.classifier = ( + nn.Linear(config.hidden_sizes[-1], config.num_labels) if config.num_labels > 0 else nn.Identity() + ) + + # Initialize weights and apply final processing + self.post_init() + + @add_start_docstrings_to_model_forward(POOLFORMER_INPUTS_DOCSTRING) + @add_code_sample_docstrings( + checkpoint=_IMAGE_CLASS_CHECKPOINT, + output_type=ImageClassifierOutputWithNoAttention, + config_class=_CONFIG_FOR_DOC, + expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT, + ) + def forward( + self, + pixel_values: Optional[torch.FloatTensor] = None, + labels: Optional[torch.LongTensor] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, ImageClassifierOutputWithNoAttention]: + r""" + labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*): + Labels for computing the image 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 + + outputs = self.poolformer( + pixel_values, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + sequence_output = outputs[0] + + logits = self.classifier(self.norm(sequence_output).mean([-2, -1])) + + loss = None + if labels is not None: + 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(logits.squeeze(), labels.squeeze()) + else: + loss = loss_fct(logits, labels) + elif self.config.problem_type == "single_label_classification": + loss_fct = CrossEntropyLoss() + loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1)) + elif self.config.problem_type == "multi_label_classification": + loss_fct = BCEWithLogitsLoss() + loss = loss_fct(logits, labels) + + if not return_dict: + output = (logits,) + outputs[2:] + return ((loss,) + output) if loss is not None else output + + return ImageClassifierOutputWithNoAttention(loss=loss, logits=logits, hidden_states=outputs.hidden_states)