Gloria Bordogna, Gabriella Pasi, Giuseppe Psaila. A Unifying Model of Flexible Queries with Distinct Semantics of Search Term Weights. In Olivier Pivert, Slawomir Zadrozny, editors, Flexible Approaches in Data, Information and Knowledge Management. Volume 497 of Studies in Computational Intelligence, pages 223-239, Springer, 2013. [doi]
Abstract is missing.