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Re-ranking (Cross-Encoder)
Re-rank top-100 with a cross-encoder — top-K quality doubles.
2 hours2 resources1 prereqs
Retrieve top-100, then re-rank with a cross-encoder (Cohere Rerank, BGE Reranker, Jina Reranker), feed top-5 into the prompt.
A cross-encoder evaluates query+doc jointly — much more accurate but slower. So it runs after retrieval as a filter.