wehub-resource-sync
228 lines
9.7 KiB
Python
228 lines
9.7 KiB
Python
# Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" TinyBERT model configuration"""
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from __future__ import annotations
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from typing import Dict
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from paddlenlp.transformers.configuration_utils import PretrainedConfig
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__all__ = ["TINYBERT_PRETRAINED_INIT_CONFIGURATION", "TinyBertConfig", "TINYBERT_PRETRAINED_RESOURCE_FILES_MAP"]
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TINYBERT_PRETRAINED_INIT_CONFIGURATION = {
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"tinybert-4l-312d": {
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"vocab_size": 30522,
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"hidden_size": 312,
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"num_hidden_layers": 4,
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"num_attention_heads": 12,
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"intermediate_size": 1200,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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"tinybert-6l-768d": {
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"vocab_size": 30522,
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"hidden_size": 768,
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"num_hidden_layers": 6,
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"num_attention_heads": 12,
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"intermediate_size": 3072,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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"tinybert-4l-312d-v2": {
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"vocab_size": 30522,
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"hidden_size": 312,
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"num_hidden_layers": 4,
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"num_attention_heads": 12,
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"intermediate_size": 1200,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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"tinybert-6l-768d-v2": {
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"vocab_size": 30522,
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"hidden_size": 768,
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"num_hidden_layers": 6,
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"num_attention_heads": 12,
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"intermediate_size": 3072,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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"tinybert-4l-312d-zh": {
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"vocab_size": 21128,
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"hidden_size": 312,
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"num_hidden_layers": 4,
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"num_attention_heads": 12,
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"intermediate_size": 1200,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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"tinybert-6l-768d-zh": {
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"vocab_size": 21128,
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"hidden_size": 768,
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"num_hidden_layers": 6,
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"num_attention_heads": 12,
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"intermediate_size": 3072,
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"hidden_act": "gelu",
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"hidden_dropout_prob": 0.1,
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"attention_probs_dropout_prob": 0.1,
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"max_position_embeddings": 512,
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"type_vocab_size": 2,
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"initializer_range": 0.02,
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"pad_token_id": 0,
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},
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}
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TINYBERT_PRETRAINED_RESOURCE_FILES_MAP = {
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"model_state": {
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"tinybert-4l-312d": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-4l-312d.pdparams",
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"tinybert-6l-768d": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-6l-768d.pdparams",
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"tinybert-4l-312d-v2": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-4l-312d-v2.pdparams",
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"tinybert-6l-768d-v2": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-6l-768d-v2.pdparams",
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"tinybert-4l-312d-zh": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-4l-312d-zh.pdparams",
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"tinybert-6l-768d-zh": "http://bj.bcebos.com/paddlenlp/models/transformers/tinybert/tinybert-6l-768d-zh.pdparams",
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}
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}
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class TinyBertConfig(PretrainedConfig):
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r"""
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This is the configuration class to store the configuration of a [`TinyBertModel`]. It is used to
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instantiate a TinyBERT model according to the specified arguments, defining the model architecture. Instantiating a
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configuration with the defaults will yield a similar configuration to that of the TinyBERT
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tinybert-6l-768d-v2 architecture.
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Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
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documentation from [`PretrainedConfig`] for more information.
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Args:
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vocab_size (`int`, *optional*, defaults to 30522):
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Vocabulary size of the BERT model. Defines the number of different tokens that can be represented by the
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`inputs_ids` passed when calling [`BertModel`] or [`TFBertModel`].
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hidden_size (`int`, *optional*, defaults to 768):
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Dimensionality of the encoder layers and the pooler layer.
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num_hidden_layers (`int`, *optional*, defaults to 12):
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Number of hidden layers in the Transformer encoder.
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num_attention_heads (`int`, *optional*, defaults to 12):
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Number of attention heads for each attention layer in the Transformer encoder.
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intermediate_size (`int`, *optional*, defaults to 3072):
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Dimensionality of the "intermediate" (often named feed-forward) layer in the Transformer encoder.
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hidden_act (`str` or `Callable`, *optional*, defaults to `"gelu"`):
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The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
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`"relu"`, `"silu"` and `"gelu_new"` are supported.
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hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
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The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
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attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
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The dropout ratio for the attention probabilities.
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max_position_embeddings (`int`, *optional*, defaults to 512):
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The maximum sequence length that this model might ever be used with. Typically set this to something large
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just in case (e.g., 512 or 1024 or 2048).
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type_vocab_size (`int`, *optional*, defaults to 2):
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The vocabulary size of the `token_type_ids` passed when calling [`BertModel`] or [`TFBertModel`].
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initializer_range (`float`, *optional*, defaults to 0.02):
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The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
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layer_norm_eps (`float`, *optional*, defaults to 1e-12):
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The epsilon used by the layer normalization layers.
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classifier_dropout (`float`, *optional*):
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The dropout ratio for the classification head.
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pad_token_id (int, optional):
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The index of padding token in the token vocabulary.
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Defaults to `0`.
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fit_size (int, optional):
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Dimensionality of the output layer of `fit_dense(s)`, which is the hidden size of the teacher model.
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`fit_dense(s)` means a hidden states' transformation from student to teacher.
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`fit_dense(s)` will be generated when bert model is distilled during the training, and will not be generated
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during the prediction process.
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`fit_denses` is used in v2 models and it has `num_hidden_layers+1` layers.
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`fit_dense` is used in other pretraining models and it has one linear layer.
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Defaults to `768`.
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Examples:
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```python
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>>> from paddlenlp.transformers import TinyBertModel, TinyBertConfig
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>>> # Initializing a TinyBERT tinybert-6l-768d-v2 style configuration
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>>> configuration = TinyBertConfig()
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>>> # Initializing a model from the tinybert-6l-768d-v2 style configuration
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>>> model = TinyBertModel(configuration)
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>>> # Accessing the model configuration
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>>> configuration = model.config
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```"""
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model_type = "tinybert"
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attribute_map: Dict[str, str] = {"dropout": "classifier_dropout", "num_classes": "num_labels"}
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pretrained_init_configuration = TINYBERT_PRETRAINED_INIT_CONFIGURATION
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def __init__(
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self,
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vocab_size: int = 30522,
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hidden_size: int = 768,
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num_hidden_layers: int = 12,
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num_attention_heads: int = 12,
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intermediate_size: int = 3072,
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hidden_act: str = "gelu",
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pool_act="tanh",
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hidden_dropout_prob: float = 0.1,
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attention_probs_dropout_prob: float = 0.1,
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max_position_embeddings: int = 512,
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type_vocab_size: int = 16,
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layer_norm_eps=1e-12,
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initializer_range: float = 0.02,
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pad_token_id: int = 0,
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fit_size: int = 768,
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**kwargs
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):
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super().__init__(pad_token_id=pad_token_id, **kwargs)
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self.vocab_size = vocab_size
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self.hidden_size = hidden_size
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self.num_hidden_layers = num_hidden_layers
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self.num_attention_heads = num_attention_heads
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self.intermediate_size = intermediate_size
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self.hidden_act = hidden_act
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self.pool_act = pool_act
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self.hidden_dropout_prob = hidden_dropout_prob
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self.attention_probs_dropout_prob = attention_probs_dropout_prob
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self.max_position_embeddings = max_position_embeddings
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self.type_vocab_size = type_vocab_size
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self.layer_norm_eps = layer_norm_eps
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self.initializer_range = initializer_range
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self.fit_size = fit_size
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