hard20 pts · first answer countsragquery-transformation

When HyDE makes retrieval worse

HyDE improves retrieval on general HR questions, but on your internal product codenames it makes recall worse. Why?

A.HyDE only works with keyword search, not with vectorsB.The codenames are too short to be embedded at allC.The LLM does not know the codenames, so its draft misleadsD.HyDE always lowers recall, and the HR gains were noise

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When HyDE makes retrieval worse

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