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Does a Correct RAG Answer Mean the System Behaved Correctly? Reading The RAT

Advanced Retrieval, memory, and production RAG

RAG Evaluation: From One Score to Conditional Behavior: Part 1 , Note: Sep 24, 2026 , Paper: 2026 , Retrieval Systems

A deep read of The RAT: how a joint Bayesian model separates retrieval, abstention, and answer correctness, and what its annotation-budget results, judge calibration, partial retrieval analysis, and controlled Wikipedia scope do and do not establish.

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