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What is the okapi method or what they called BM25?

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Okapi BM25 - Wikipedia. a ranking function used by search engines to rank matching documents according to their relevance to a given search query. read more

Okapi BM25 - Wikipedia. a ranking function used by search engines to rank matching documents according to their relevance to a given search query. This page may be out of date. Save your draft before refreshing this page. read more

The BM25 weighting scheme, often called Okapi weighting, after the system in which it was first implemented, was developed as a way of building a probabilistic model sensitive to these quantities while not introducing too many additional parameters into the model (Spärck Jones et al., 2000). read more

The name of the actual ranking function is BM25. To set the right context, however, it usually referred to as "Okapi BM25", since the Okapi information retrieval system, implemented at London 's City University in the 1980s and 1990s, was the first system to implement this function. read more

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