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82 lines
2.9 KiB
Markdown
82 lines
2.9 KiB
Markdown
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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# BertJapanese
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## Overview
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BERT モデルは日本語テキストでトレーニングされました。
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2 つの異なるトークン化方法を備えたモデルがあります。
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- MeCab と WordPiece を使用してトークン化します。これには、[MeCab](https://taku910.github.io/mecab/) のラッパーである [fugashi](https://github.com/polm/fugashi) という追加の依存関係が必要です。
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- 文字にトークン化します。
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*MecabTokenizer* を使用するには、`pip installTransformers["ja"]` (または、インストールする場合は `pip install -e .["ja"]`) する必要があります。
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ソースから)依存関係をインストールします。
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[cl-tohakuリポジトリの詳細](https://github.com/cl-tohaku/bert-japanese)を参照してください。
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MeCab および WordPiece トークン化でモデルを使用する例:
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```python
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>>> import torch
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>>> from transformers import AutoModel, AutoTokenizer
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>>> bertjapanese = AutoModel.from_pretrained("cl-tohoku/bert-base-japanese")
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>>> tokenizer = AutoTokenizer.from_pretrained("cl-tohoku/bert-base-japanese")
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>>> ## Input Japanese Text
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>>> line = "吾輩は猫である。"
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>>> inputs = tokenizer(line, return_tensors="pt")
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>>> print(tokenizer.decode(inputs["input_ids"][0]))
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[CLS] 吾輩 は 猫 で ある 。 [SEP]
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>>> outputs = bertjapanese(**inputs)
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```
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文字トークン化を使用したモデルの使用例:
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```python
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>>> bertjapanese = AutoModel.from_pretrained("cl-tohoku/bert-base-japanese-char")
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>>> tokenizer = AutoTokenizer.from_pretrained("cl-tohoku/bert-base-japanese-char")
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>>> ## Input Japanese Text
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>>> line = "吾輩は猫である。"
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>>> inputs = tokenizer(line, return_tensors="pt")
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>>> print(tokenizer.decode(inputs["input_ids"][0]))
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[CLS] 吾 輩 は 猫 で あ る 。 [SEP]
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>>> outputs = bertjapanese(**inputs)
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```
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<Tip>
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- この実装はトークン化方法を除いて BERT と同じです。その他の使用例については、[BERT のドキュメント](bert) を参照してください。
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</Tip>
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このモデルは[cl-tohaku](https://huggingface.co/cl-tohaku)から提供されました。
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## BertJapaneseTokenizer
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[[autodoc]] BertJapaneseTokenizer
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