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tokenization_layoutlm_fast.py
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tokenization_layoutlm_fast.py
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# coding=utf-8
# Copyright 2018 The Microsoft Research Asia LayoutLM Team Authors.
#
# 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 class for model LayoutLM."""
from ...utils import logging
from ..bert.tokenization_bert_fast import BertTokenizerFast
from .tokenization_layoutlm import LayoutLMTokenizer
logger = logging.get_logger(__name__)
VOCAB_FILES_NAMES = {"vocab_file": "vocab.txt", "tokenizer_file": "tokenizer.json"}
PRETRAINED_VOCAB_FILES_MAP = {
"vocab_file": {
"microsoft/layoutlm-base-uncased": "https://huggingface.co/microsoft/layoutlm-base-uncased/resolve/main/vocab.txt",
"microsoft/layoutlm-large-uncased": "https://huggingface.co/microsoft/layoutlm-large-uncased/resolve/main/vocab.txt",
},
"tokenizer_file": {
"microsoft/layoutlm-base-uncased": "https://huggingface.co/microsoft/layoutlm-base-uncased/resolve/main/tokenizer.json",
"microsoft/layoutlm-large-uncased": "https://huggingface.co/microsoft/layoutlm-large-uncased/resolve/main/tokenizer.json",
},
}
PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES = {
"microsoft/layoutlm-base-uncased": 512,
"microsoft/layoutlm-large-uncased": 512,
}
PRETRAINED_INIT_CONFIGURATION = {
"microsoft/layoutlm-base-uncased": {"do_lower_case": True},
"microsoft/layoutlm-large-uncased": {"do_lower_case": True},
}
class LayoutLMTokenizerFast(BertTokenizerFast):
r"""
Constructs a "Fast" LayoutLMTokenizer.
[`LayoutLMTokenizerFast`] is identical to [`BertTokenizerFast`] and runs end-to-end tokenization: punctuation
splitting + wordpiece.
Refer to superclass [`BertTokenizerFast`] for usage examples and documentation concerning parameters.
"""
vocab_files_names = VOCAB_FILES_NAMES
pretrained_vocab_files_map = PRETRAINED_VOCAB_FILES_MAP
max_model_input_sizes = PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
pretrained_init_configuration = PRETRAINED_INIT_CONFIGURATION
slow_tokenizer_class = LayoutLMTokenizer