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The fuller name, Okapi BM25, includes the name of the first system to use it, which was the Okapi information retrieval system, implemented at London's City University[1] in the 1980s and 1990s
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The fuller name, Okapi BM25, includes the name of the first system to use it, which was the Okapi information retrieval system, implemented at London's City University[1] in the 1980s and 1990s
S-Class Information Retrieval
The empirically validated retrieval progression is BM25 then learned-sparse then dense then hybrid fusion with re-ranking
; Boytsov, Leonid; Lin, Jimmy (2020), "Which BM25 do You Mean
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