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News/Scan or Index? large Evidence Coverage, Answer Quality, and Cost in Long-Document RAG
arxiv
PublishedOctober 22, 2026 at 4:00 AM

Scan or Index? large Evidence Coverage, Answer Quality, and Cost in Long-Document RAG

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arXiv:2610.28957v1 Announce Type: new Abstract: Scanning every passage in a long document seems thorough, but does it preserve more useful evidence or produce better answers? We compare 11 retrieval configurations spanning lexical and dense search, hybrid reranking, and full-document scanning with J

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