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html |access-date=January 27, 2009 |publisher=Computer Science Department, Stanford University, Stanford, CA |archive-date=April 25, 2009 |archive-url=https://web
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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
[7] It was initially available for download from its home at the SourceForge web site
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Wayback Machine Show dark mode logo Show light mode logo Type of site Archiving service Founded October 25, 2001 ; 24 years ago  ( 2001-10-25 ) [ 1 ] Area served Worldwide ( except China and North Korea ) Owner Internet Archive URL web
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YouTube Show dark mode version of logo Show light mode version of logo Logo used since October 22, 2024 YouTube search results, May 2025 Type of business Subsidiary Type of site Online video platform , social media platform Founded February 14, 2005 ; 21 years ago  ( 2005-02-14 ) Headquarters 901
Up until 2005, the only way to share files was by creating a small text file called a " torrent ", that they would upload to a torrent index site
3 Anti-overload techniques 5 Market share 6 See also 7 References 8 External links Toggle the table of contents Web server 70 languages Afrikaans العربية অসমীয়া Asturianu Azərbaycanca Беларуская (тарашкевіца) Беларуская Български বাংলা Bosanski
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