Jones, S.; Walker, S.; Gatford, M.; Do, T. - In: Journal of Documentation 53 (1997) 1, pp. 58-68
At the heart of the Okapi system is a formula referring to some half a dozen variables, which estimate the probability that a given document is relevant to a given query. User interface design for Okapi aims to present its search capabilities as clearly and simply as possible. But between the...