Reranking and Query Transformation: Cross-Encoders, Query Rewriting and HyDE
Retrieve wide, return narrow: passing hybrid search's 10 candidates through a reranker that reads question and chunk together raised the right chunk in first place from 15 to 23 of 30 questions, at 3.2 seconds per question. We measure conversational query rewriting, multi-query, HyDE and self-query on the same set and show when they hurt.
8 Nov 2026
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14 min
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5
