Coverage-focused retrieval metrics correlate strongly with nugget coverage in RAG responses across text and multimodal benchmarks, supporting their use as performance proxies when retrieval and generation goals align.
Cormack, Charles L A Clarke, and Stefan Buettcher
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Beyond Relevance: On the Relationship Between Retrieval and RAG Information Coverage
Coverage-focused retrieval metrics correlate strongly with nugget coverage in RAG responses across text and multimodal benchmarks, supporting their use as performance proxies when retrieval and generation goals align.