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

Ranking effectiveness does not scale monotonically with training-data volume, so more data alone does not unlock quality

[7] It was initially available for download from its home at the SourceForge web site

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CG does not take into account the rank (position) of a result in the result list

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A user's client provides presence information (presence state) via a network connection to a presence service , which is stored in what constitutes their personal availability record (called a presentity ) and can be made available for distribution to other users (called watchers ) to convey their availability for

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This does not mean that they repress this feeling

It thus arrives at expressions in terms of those symbols for expressions and variables in the program, and constraints in terms of those symbols for the possib

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In addition to correctly connecting the nets, routers may also be expected to make sure the design meets timing, has no crosstalk problems, meets any metal density requirements, does not suffer from antenna effects , and so on