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[MegatronBERT P0] add PretrainedConfig and unit test #4912
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"commit megatronbert configuration"
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"tokenizer test"
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# Copyright (c) 2022 PaddlePaddle Authors. 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. | ||
""" MBart model configuration""" | ||
from __future__ import annotations | ||
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from paddlenlp.transformers.configuration_utils import PretrainedConfig | ||
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__all__ = [ | ||
"MegatronBert_PRETRAINED_INIT_CONFIGURATION", | ||
"MegatronBert_PRETRAINED_RESOURCE_FILES_MAP", | ||
"MegatronBertConfig", | ||
] | ||
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MegatronBert_PRETRAINED_INIT_CONFIGURATION = { | ||
"megatronbert-cased": { | ||
"attention_probs_dropout_prob": 0.1, | ||
"hidden_act": "gelu", | ||
"hidden_dropout_prob": 0.1, | ||
"hidden_size": 1024, | ||
"initializer_range": 0.02, | ||
"intermediate_size": 4096, | ||
"max_position_embeddings": 512, | ||
"num_attention_heads": 16, | ||
"num_hidden_layers": 24, | ||
"type_vocab_size": 2, | ||
"vocab_size": 29056, | ||
"pad_token_id": 0, | ||
}, | ||
"megatronbert-uncased": { | ||
"attention_probs_dropout_prob": 0.1, | ||
"hidden_act": "gelu", | ||
"hidden_dropout_prob": 0.1, | ||
"hidden_size": 1024, | ||
"initializer_range": 0.02, | ||
"intermediate_size": 4096, | ||
"max_position_embeddings": 512, | ||
"num_attention_heads": 16, | ||
"num_hidden_layers": 24, | ||
"type_vocab_size": 2, | ||
"vocab_size": 30592, | ||
"pad_token_id": 0, | ||
}, | ||
} | ||
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MegatronBert_PRETRAINED_RESOURCE_FILES_MAP = { | ||
"model_state": { | ||
"megatronbert-cased": "http://bj.bcebos.com/paddlenlp/models/transformers/" | ||
"megatron-bert/megatronbert-cased/model_state.pdparams", | ||
"megatronbert-uncased": "http://bj.bcebos.com/paddlenlp/models/transformers/" | ||
"megatron-bert/megatronbert-cased/model_state.pdparams", | ||
} | ||
} | ||
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class MegatronBertConfig(PretrainedConfig): | ||
r""" | ||
This is the configuration class to store the configuration of a [`MegatronBertModel`]. It is used to instantiate a | ||
MEGATRON_BERT 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 MEGATRON_BERT | ||
[nvidia/megatron-bert-uncased-345m](https://huggingface.co/nvidia/megatron-bert-uncased-345m) architecture. | ||
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the | ||
documentation from [`PretrainedConfig`] for more information. | ||
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Args: | ||
vocab_size (int): | ||
Vocabulary size of `inputs_ids` in `MegatronBertModel`. Also is the vocab size of token embedding matrix. | ||
Defines the number of different tokens that can be represented by the `inputs_ids` passed when calling `MegatronBert`. | ||
hidden_size (int, optional): | ||
Dimensionality of the encoder layer and pooler layer. Defaults to `1024`. | ||
pad_token_id (int, optional): | ||
The index of padding token in the token vocabulary. | ||
Defaults to `0`. | ||
type_vocab_size (int, optional): | ||
The vocabulary size of `token_type_ids`. | ||
Defaults to `2`. | ||
hidden_act (str, optional): | ||
The non-linear activation function in the feed-forward layer. | ||
``"gelu"``, ``"relu"`` and any other paddle supported activation functions | ||
are supported. Defaults to `"gelu"`. | ||
attention_probs_dropout_prob (float, optional): | ||
The dropout probability used in MultiHeadAttention in all encoder layers to drop some attention target. | ||
Defaults to `0.1`. | ||
num_attention_heads (int, optional): | ||
Number of attention heads for each attention layer in the Transformer encoder. | ||
Defaults to `16`. | ||
num_hidden_layers (int, optional): | ||
Number of hidden layers in the Transformer encoder. Defaults to `24`. | ||
max_position_embeddings (int, optional): | ||
The maximum value of the dimensionality of position encoding, which dictates the maximum supported length of an input | ||
sequence. Defaults to `512`. | ||
hidden_dropout_prob (float, optional): | ||
The dropout probability for all fully connected layers in the embeddings and encoder. | ||
Defaults to `0.1`. | ||
intermediate_size (int, optional): | ||
Dimensionality of the feed-forward (ff) layer in the encoder. Input tensors | ||
to ff layers are firstly projected from `hidden_size` to `intermediate_size`, | ||
and then projected back to `hidden_size`. Typically `intermediate_size` is larger than `hidden_size`. | ||
Defaults to `4096`. | ||
position_embedding_type (str, optional): | ||
Type of position embedding. Defaults to "absolute" | ||
initializer_range (float, optional): | ||
The standard deviation of the normal initializer. | ||
Defaults to 0.02. | ||
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.. note:: | ||
A normal_initializer initializes weight matrices as normal distributions. | ||
See :meth:`MegatronBertPretrainedModel.init_weights()` for how weights are initialized in `MegatronBertModel`. | ||
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""" | ||
model_type = "megatronbert" | ||
keys_to_ignore_at_inference = ["past_key_values"] | ||
attribute_map = {"num_attention_heads": "encoder_attention_heads", "hidden_size": "d_model"} | ||
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def __init__( | ||
self, | ||
vocab_size=29056, | ||
hidden_size=1024, | ||
num_hidden_layers=24, | ||
num_attention_heads=16, | ||
intermediate_size=4096, | ||
hidden_act="gelu", | ||
hidden_dropout_prob=0.1, | ||
attention_probs_dropout_prob=0.1, | ||
max_position_embeddings=512, | ||
type_vocab_size=2, | ||
initializer_range=0.02, | ||
layer_norm_eps=1e-12, | ||
pad_token_id=0, | ||
position_embedding_type="absolute", | ||
# use_cache=True, | ||
**kwargs, | ||
): | ||
super().__init__(pad_token_id=pad_token_id, **kwargs) | ||
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self.vocab_size = vocab_size | ||
self.hidden_size = hidden_size | ||
self.num_hidden_layers = num_hidden_layers | ||
self.num_attention_heads = num_attention_heads | ||
self.hidden_act = hidden_act | ||
self.intermediate_size = intermediate_size | ||
self.hidden_dropout_prob = hidden_dropout_prob | ||
self.attention_probs_dropout_prob = attention_probs_dropout_prob | ||
self.max_position_embeddings = max_position_embeddings | ||
self.type_vocab_size = type_vocab_size | ||
self.initializer_range = initializer_range | ||
self.layer_norm_eps = layer_norm_eps | ||
self.position_embedding_type = position_embedding_type | ||
# self.use_cache = use_cache |
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