Kenji Saito, Hiroyuki Shioya, Tsutomu Da-te A Treatment of Usefulness of Keywords in Fuzzy Requests for an Information Retrieval System with Bayesian Networks. [Citation Graph (0, 0)][DBLP] International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 1999, v:7, n:4, pp:399-406 [Journal]