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transformers/docs/source/ja/model_doc/bert-japanese.md
陈赣 06f1fd69a6
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first commit
2026-06-05 16:53:03 +08:00

2.9 KiB

BertJapanese

Overview

BERT モデルは日本語テキストでトレーニングされました。

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。

  • MeCab と WordPiece を使用してトークン化します。これには、MeCab のラッパーである fugashi という追加の依存関係が必要です。
  • 文字にトークン化します。

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。 ソースから)依存関係をインストールします。

cl-tohakuリポジトリの詳細を参照してください。

MeCab および WordPiece トークン化でモデルを使用する例:

>>> import torch
>>> from transformers import AutoModel, AutoTokenizer

>>> bertjapanese = AutoModel.from_pretrained("cl-tohoku/bert-base-japanese")
>>> tokenizer = AutoTokenizer.from_pretrained("cl-tohoku/bert-base-japanese")

>>> ## Input Japanese Text
>>> line = "吾輩は猫である。"

>>> inputs = tokenizer(line, return_tensors="pt")

>>> print(tokenizer.decode(inputs["input_ids"][0]))
[CLS] 吾輩    ある  [SEP]

>>> outputs = bertjapanese(**inputs)

文字トークン化を使用したモデルの使用例:

>>> bertjapanese = AutoModel.from_pretrained("cl-tohoku/bert-base-japanese-char")
>>> tokenizer = AutoTokenizer.from_pretrained("cl-tohoku/bert-base-japanese-char")

>>> ## Input Japanese Text
>>> line = "吾輩は猫である。"

>>> inputs = tokenizer(line, return_tensors="pt")

>>> print(tokenizer.decode(inputs["input_ids"][0]))
[CLS]         [SEP]

>>> outputs = bertjapanese(**inputs)
  • 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 を参照してください。

このモデルはcl-tohakuから提供されました。

BertJapaneseTokenizer

autodoc BertJapaneseTokenizer