Reranking is the second stage of a RAG pipeline in which the top-100 results from a fast first-stage retriever are reordered with a more expensive but more accurate model — usually a Cross-encoder — to produce a polished top-5 or top-10. Services like Cohere Rerank, BGE Reranker, and VoyageAI reduce this to a single API call. The two-stage approach trades a small amount of latency for a noticeable accuracy gain, and is widely cited as the highest-ROI optimization after Hybrid Search in production RAG systems.
MEVZU N°124ISTANBULYEAR I — VOL. III
Glossary · Intermediate · 2020
Reranking
A second stage that re-orders first-stage retrieval results with a stronger model.
- EN — English term
- Reranking
- TR — Turkish term
- Yeniden Sıralama