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transformers/docs/source/ja/model_doc/auto.md
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Auto Classes

多くの場合、from_pretrained()メソッドに与えられた事前学習済みモデルの名前やパスから、使用したいアーキテクチャを推測することができます。自動クラスはこの仕事をあなたに代わって行うためにここにありますので、事前学習済みの重み/設定/語彙への名前/パスを与えると自動的に関連するモデルを取得できます。

[AutoConfig]、[AutoModel]、[AutoTokenizer]のいずれかをインスタンス化すると、関連するアーキテクチャのクラスが直接作成されます。例えば、

model = AutoModel.from_pretrained("google-bert/bert-base-cased")

これは[BertModel]のインスタンスであるモデルを作成します。

各タスクごと、そして各バックエンドPyTorch、TensorFlow、またはFlaxごとにAutoModelのクラスが存在します。

自動クラスの拡張

それぞれの自動クラスには、カスタムクラスで拡張するためのメソッドがあります。例えば、NewModelというモデルのカスタムクラスを定義した場合、NewModelConfigを確保しておけばこのようにして自動クラスに追加することができます:

from transformers import AutoConfig, AutoModel

AutoConfig.register("new-model", NewModelConfig)
AutoModel.register(NewModelConfig, NewModel)

その後、通常どおりauto classesを使用することができるようになります

あなたのNewModelConfigが[~transformers.PreTrainedConfig]のサブクラスである場合、そのmodel_type属性がコンフィグを登録するときに使用するキー(ここでは"new-model")と同じに設定されていることを確認してください。

同様に、あなたのNewModelが[PreTrainedModel]のサブクラスである場合、そのconfig_class属性がモデルを登録する際に使用するクラス(ここではNewModelConfig)と同じに設定されていることを確認してください。

AutoConfig

autodoc AutoConfig

AutoTokenizer

autodoc AutoTokenizer

AutoFeatureExtractor

autodoc AutoFeatureExtractor

AutoImageProcessor

autodoc AutoImageProcessor

AutoProcessor

autodoc AutoProcessor

Generic model classes

以下の自動クラスは、特定のヘッドを持たないベースモデルクラスをインスタンス化するために利用可能です。

AutoModel

autodoc AutoModel

Generic pretraining classes

以下の自動クラスは、事前学習ヘッドを持つモデルをインスタンス化するために利用可能です。

AutoModelForPreTraining

autodoc AutoModelForPreTraining

Natural Language Processing

以下の自動クラスは、次の自然言語処理タスクに利用可能です。

AutoModelForCausalLM

autodoc AutoModelForCausalLM

AutoModelForMaskedLM

autodoc AutoModelForMaskedLM

AutoModelForMaskGeneration

autodoc AutoModelForMaskGeneration

AutoModelForSeq2SeqLM

autodoc AutoModelForSeq2SeqLM

AutoModelForSequenceClassification

autodoc AutoModelForSequenceClassification

AutoModelForMultipleChoice

autodoc AutoModelForMultipleChoice

AutoModelForNextSentencePrediction

autodoc AutoModelForNextSentencePrediction

AutoModelForTokenClassification

autodoc AutoModelForTokenClassification

AutoModelForQuestionAnswering

autodoc AutoModelForQuestionAnswering

AutoModelForTextEncoding

autodoc AutoModelForTextEncoding

Computer vision

以下の自動クラスは、次のコンピュータービジョンタスクに利用可能です。

AutoModelForDepthEstimation

autodoc AutoModelForDepthEstimation

AutoModelForImageClassification

autodoc AutoModelForImageClassification

AutoModelForVideoClassification

autodoc AutoModelForVideoClassification

AutoModelForMaskedImageModeling

autodoc AutoModelForMaskedImageModeling

AutoModelForObjectDetection

autodoc AutoModelForObjectDetection

AutoModelForImageSegmentation

autodoc AutoModelForImageSegmentation

AutoModelForImageToImage

autodoc AutoModelForImageToImage

AutoModelForSemanticSegmentation

autodoc AutoModelForSemanticSegmentation

AutoModelForInstanceSegmentation

autodoc AutoModelForInstanceSegmentation

AutoModelForUniversalSegmentation

autodoc AutoModelForUniversalSegmentation

AutoModelForZeroShotImageClassification

autodoc AutoModelForZeroShotImageClassification

AutoModelForZeroShotObjectDetection

autodoc AutoModelForZeroShotObjectDetection

Audio

以下の自動クラスは、次の音声タスクに利用可能です。

AutoModelForAudioClassification

autodoc AutoModelForAudioClassification

AutoModelForAudioFrameClassification

autodoc AutoModelForAudioFrameClassification

AutoModelForCTC

autodoc AutoModelForCTC

AutoModelForSpeechSeq2Seq

autodoc AutoModelForSpeechSeq2Seq

AutoModelForAudioXVector

autodoc AutoModelForAudioXVector

AutoModelForTextToSpectrogram

autodoc AutoModelForTextToSpectrogram

AutoModelForTextToWaveform

autodoc AutoModelForTextToWaveform

Multimodal

以下の自動クラスは、次のマルチモーダルタスクに利用可能です。

AutoModelForTableQuestionAnswering

autodoc AutoModelForTableQuestionAnswering

AutoModelForDocumentQuestionAnswering

autodoc AutoModelForDocumentQuestionAnswering

AutoModelForVisualQuestionAnswering

autodoc AutoModelForVisualQuestionAnswering

AutoModelForImageTextToText

autodoc AutoModelForImageTextToText

Time Series

AutoModelForTimeSeriesPrediction

autodoc AutoModelForTimeSeriesPrediction