"Storbritannien" . . "OKAPI" . . . . "Information theory." . . . . . "Okapi at TREC-2" . "Okapi at TREC-2"@en . . . "Okapi at Text Retrieval Conference 2"@en . . . . . . . . . . . . . . . . "Conference papers and proceedings" . . . . . . "Okapi an TREC-2"@en . . . . . "Documentation, information science and librarianship." . . "Genfindingssystemer" . .