A q-log odds variant of BM25 raises NDCG@10 by 89% relative on CodeSearchNet Go under fixed generic tokenization while recovering standard BM25 at q=1.
Emily Hill, Dawn Lawrie, Lori Pollock, and K
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Improving BM25 Code Retrieval Under Fixed Generic Tokenization: Adaptive q-Log Odds as a Drop-In BM25 Fix
A q-log odds variant of BM25 raises NDCG@10 by 89% relative on CodeSearchNet Go under fixed generic tokenization while recovering standard BM25 at q=1.