`langchain_core.documents.transformers`.BaseDocumentTransformer¶

class langchain_core.documents.transformers.BaseDocumentTransformer[source]¶

文档转换的抽象基类。

文档转换接受一序列文档并返回转换后的文档序列。

示例

class EmbeddingsRedundantFilter(BaseDocumentTransformer, BaseModel):
    embeddings: Embeddings
    similarity_fn: Callable = cosine_similarity
    similarity_threshold: float = 0.95

    class Config:
        arbitrary_types_allowed = True

    def transform_documents(
        self, documents: Sequence[Document], **kwargs: Any
    ) -> Sequence[Document]:
        stateful_documents = get_stateful_documents(documents)
        embedded_documents = _get_embeddings_from_stateful_docs(
            self.embeddings, stateful_documents
        )
        included_idxs = _filter_similar_embeddings(
            embedded_documents, self.similarity_fn, self.similarity_threshold
        )
        return [stateful_documents[i] for i in sorted(included_idxs)]

    async def atransform_documents(
        self, documents: Sequence[Document], **kwargs: Any
    ) -> Sequence[Document]:
        raise NotImplementedError

方法

`__init__`()
`atransform_documents`(documents, **kwargs)	异步转换文档列表。
`transform_documents`(documents, **kwargs)	转换文档列表。

__init__()¶

async atransform_documents(documents: Sequence[Document], **kwargs: Any) → Sequence[Document][source]¶

异步转换文档列表。

参数

documents (Sequence[Document]) – 要转换的文档序列。
kwargs (Any) –

返回

转换后的文档序列。

返回类型

Sequence[Document]

abstract transform_documents(documents: Sequence[Document], **kwargs: Any) → Sequence[Document][source]¶

转换文档列表。