Advances in Information Retrieval: Recent Research from the Center for Intelligent Information Retrieval W. Bruce Croft (editor) (University of Massachusetts, Amherst) Dordrecht: Kluwer Academic Publishers (The Kluwer international series on information retrieval, edited by W. Bruce Croft), 2000, xv+306 pp; hardbound, ISBN 0-7923-7812-1, $99.50, £68.75, Dfl 230.00 - Sanda Harabagiu (Computational Linguistics)