EntityQ2068750· pop 9· linked from 13 articlesOkapi BM25Sign in to saveranking function used by search enginesConnectionstf–idfEntityLondonCityInternational Standard Book NumberEntityinformationEntitydigital object identifierEntityinformation theoryEntitysearch engineEntityinformation retrievalEntityQ22908627EntityKaren Spärck JonesEntityCiteSeerXEntitybag-of-words modelEntityanchor textEntitydocument retrievalEntityrelevanceEntityProbabilistic relevance modelEntityCategoriesRanking functions