Knowledge Discovery in Databases: PKDD 2007 11th European Confer

The two premier annual European conferences in the areas of machine learning and data mining have been collocated ever since the ?rst joint conference in Freiburg, 2001. The European Conference on Machine Learning (ECML) traces its origins to 1986, when t

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Subseries of Lecture Notes in Computer Science

4702

Joost N. Kok Jacek Koronacki Ramon Lopez de Mantaras Stan Matwin Dunja Mladeniˇc Andrzej Skowron (Eds.)

Knowledge Discovery in Databases: PKDD 2007 11th European Conference on Principles and Practice of Knowledge Discovery in Databases Warsaw, Poland, September 17-21, 2007 Proceedings

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Series Editors Jaime G. Carbonell, Carnegie Mellon University, Pittsburgh, PA, USA Jörg Siekmann, University of Saarland, Saarbrücken, Germany Volume Editors Joost N. Kok Leiden University, The Netherlands E-mail: [email protected] Jacek Koronacki Polish Academy of Sciences, Warsaw, Poland E-mail: [email protected] Ramon Lopez de Mantaras Spanish National Research Council (CSIC), Bellaterra, Spain E-mail: [email protected] Stan Matwin University of Ottawa, Ontario, Canada E-mail: [email protected] Dunja Mladeniˇc Jožef Stefan Institute, Ljubljana, Slovenia E-mail: [email protected] Andrzej Skowron Warsaw University, Poland E-mail: [email protected] Library of Congress Control Number: 2007934762 CR Subject Classification (1998): I.2, H.2, J.1, H.3, G.3, I.7, F.4.1 LNCS Sublibrary: SL 7 – Artificial Intelligence ISSN ISBN-10 ISBN-13

0302-9743 3-540-74975-6 Springer Berlin Heidelberg New York 978-3-540-74975-2 Springer Berlin Heidelberg New York

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Preface

The two premier annual European conferences in the areas of machine learning and data mining have been collocated ever since the first joint conference in Freiburg, 2001. The European Conference on Machine Learning (ECML) traces its origins to 1986, when the first European Working Session on Learning was held in Orsay, France. The European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD) was first held in 1997 in Trondheim, Norway. Over the years, the ECML/PKDD series has evolved into one of the largest and most selective international conferences in machine learning and data mining. In 2007, the seventh collocated ECML/PKDD took place during September 17–21 on the central campus of Warsaw University and in the nearby Staszic Palace of the Polish Academy of Sciences. The conference for the third time used a hierarchical rev