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#BM25

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Editorial diagram of a shared Qdrant collection mixing twelve tenant vocabularies into global IDF, then scoping params.idf.corpus to one tenant

Qdrant 1.19 Per-Tenant IDF: Ranking Changes, Not nDCG

We ran Qdrant 1.19 per-tenant IDF on 457k CQADupStack docs. Top-1 changed on 20% of queries. Labeled nDCG barely moved. Methodology, numbers, and the API.

Aug 22, 202615 min readRead

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