LangChain

Weaviate混合搜索#

本教程演示了如何使用Weaviate混合搜索 (opens in a new tab)作为LangChain检索器。

import weaviate
import os
 
WEAVIATE_URL = "..."
client = weaviate.Client(
    url=WEAVIATE_URL,
)

from langchain.retrievers.weaviate_hybrid_search import WeaviateHybridSearchRetriever
from langchain.schema import Document

retriever = WeaviateHybridSearchRetriever(client, index_name="LangChain", text_key="text")

docs = [Document(page_content="foo")]

retriever.add_documents(docs)

['3f79d151-fb84-44cf-85e0-8682bfe145e0']

retriever.get_relevant_documents("foo")

[Document(page_content='foo', metadata={})]