Dividing your RAG score by retrieval recall overstates your generation quality, and here is by how much

This story is from 2026-08-25. It is preserved in the archive; the latest stories are on the live feed.

Almost every RAG eval writeup I read, including several I have recommended, uses the same mental model. The system is two stages in series. Retrieval either finds the right context or it does not, with probability r. Given the right context, generation either produces the right answer or it does no…

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1. 2026-08-25 20:45 · DEV Community — Machine Learning
   Dividing your RAG score by retrieval recall overstates your generation quality, and here is by how much