Is your new search actually better? Label gaps, LLM judge panels, and paired statistics for offline search evaluation
Every search team eventually ships a ranking change on the strength of a table where the new system's nDCG@10 is a little higher than the old one's. Then it goes to production and nothing measurable happens. Usually nothing went wrong in the code. The evaluation was answering a different question f…
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- 2026-10-31 12:53 · DEV Community — Machine Learning
Is your new search actually better? Label gaps, LLM judge panels, and paired statistics for offline search evaluation