Yonggang Qiu, Hans-Peter Frei. Concept Based Query Expansion. In Robert Korfhage, Edie M. Rasmussen, Peter Willett 0002, editors, Proceedings of the 16th Annual International ACM-SIGIR Conference on Research and Development in Information Retrieval. Pittsburgh, PA, USA, June 27 - July 1, 1993. pages 160-169, ACM, 1993. [doi]
Abstract is missing.