Your Eval Set Is a Product Spec
Design RAG eval cases by connecting capability claims, evidence, and scoring criteria.
Your eval set is a product spec in disguise. Capability, evidence, score Evidence-centered benchmark design asks you to connect the thing you claim to measure with the evidence your tasks collect. In RAG evaluation, the capability might be policy exception handling, cross-document synthesis, source abstention, or retrieval under noisy wording. The evidence is what the system must retrieve and say. The scoring rule explains how a reviewer or judge decides pass or fail. This matters because random questions create random confidence. A RAG assistant can pass many easy lookup questions and still fail the moments users actually care about. Valid…
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