Reranking
Fast search finds a hundred plausible passages; a slower model decides which five the answer should rest on. Reranking cannot rescue what was never found.
Fast search finds a hundred plausible passages; a slower model decides which five the answer should rest on. Reranking cannot rescue what was never found.
Sparse and dense retrievers fail on different queries. Learn how to fuse them, where a reranker helps or hurts, how to rewrite queries without losing exact terms, and how to benchmark each stage.