Author

E. Irankhah

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Preprint Oct 2026

RAGFlip: Measuring Query-Level Negative Flips in Retriever Upgrades

Retriever upgrades are typically evaluated using aggregate metrics, which can hide regressions on queries the previous retriever already served correctly. We study these regressions as negative flips: queries for which BM25 retrieves a judged relevant passage and the replacement does not. We evaluate BGE-large, E5-larg...

E. Irankhah, Muhammad Arif · 0 citations