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Which Langchain class is typically used to perform hybrid search combining keyword and semantic queries?

easy📝 Syntax Q3 of 15
LangChain - RAG Chain Construction
Which Langchain class is typically used to perform hybrid search combining keyword and semantic queries?
AKeywordOnlyRetriever
BHybridSearchRetriever
CSemanticVectorRetriever
DImageSearchRetriever
Step-by-Step Solution
Solution:

  1. Step 1: Identify retriever classes in Langchain

    Langchain provides retrievers for keyword, semantic, and hybrid searches.

  2. Step 2: Match class name for hybrid search

    The class named HybridSearchRetriever is designed for combining keyword and semantic search.

  3. Final Answer:

    HybridSearchRetriever -> Option B

  4. Quick Check:

    Hybrid search class = HybridSearchRetriever [OK]
Quick Trick: Hybrid search uses HybridSearchRetriever class [OK]
Common Mistakes:
  • Choosing KeywordOnlyRetriever for hybrid
  • Confusing semantic retriever with hybrid
  • Selecting unrelated retriever classes

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