query-transformations

【文档与办公】Pre-retrieval query rewriting techniques. HyDE, multi-query, step-back, RAG-fusion with RRF, sub-query decomposition, query routing, and expansion. Full Python code per technique with LangChain and native Anthropic SDK. USE WHEN: user mentions "HyDE", "hypothetical document", "multi-query", "step-back prompting", "RAG-fusion", "query rewriting", "qu…

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