Friday, 22 March 2013

New BM25 functions and IDF operators in custom rankers

Until 2.1.1-beta the functions exposed in custom rankers for handling relevancy based on term frequency and Inverse Document Frequency (IDF) did not take field or document lengths into account. In 2.1.1-beta, Sphinx includes functions that take relevance ranking to the next level.
crawled from : Sphinxsearch

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