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Internet Archive Type of business Nonprofit organization Type of site Digital library Available in English Founded May 10, 1996 ; 30 years ago  ( 1996-05-10 ) Headquarters 300 Funston Avenue Richmond District San Francisco , California, U
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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