Revision History
BM25 (Okapi BM25) · 7 revisions
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Recent edit summaries
Detailed summaries recorded by editors. Generic maintenance summaries are omitted here; every recorded revision remains below. Dates describe the edit, not necessarily the event it covers.
- Correction: Corrected BM25's origin (the 1994 SIGIR paper produced BM11 and BM15; BM25 was introduced at TREC-3), the placement of Lucene's +1 inside the IDF logarithm, the authors and years of BM25-adpt and BM25T (Lv and Zhai, 2011 and 2012), and a composite BEIR quote that overstated which models failed to generalize (plus 19 minor fixes)
Version 7 · Nov 4, 2026, 04:08 PM
- Improve internal links (2026-10-13)
Version 6 · Oct 13, 2026, 10:18 AM
- Added 6 contextual internal links
Version 5 · Jul 23, 2026, 03:28 PM