Rough Sets and Knowledge Technology First International Conference,

This volume contains the papers selected for presentation at the First Int- national Conference on Rough Sets and Knowledge Technology (RSKT 2006) organized in Chongqing, P. R. China, July 24-26, 2003. There were 503 s- missions for RSKT 2006 except for 1

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Subseries of Lecture Notes in Computer Science

4062

Guoyin Wang James F. Peters Andrzej Skowron Yiyu Yao (Eds.)

Rough Sets and Knowledge Technology First International Conference, RSKT 2006 Chongqing, China, July 24-26, 2006 Proceedings

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Volume Editors Guoyin Wang Chongqing University of Posts and Telecommunications College of Computer Science and Technology Chongqing, 400065, P.R. China E-mail: [email protected] James F. Peters University of Manitoba Department of Electrical and Computer Engineering Winnipeg, Manitoba R3T 5V6, Canada E-mail: [email protected] Andrzej Skowron Warsaw University, Institute of Mathematics Banacha 2, 02-097 Warsaw, Poland E-mail: [email protected] Yiyu Yao University of Regina Department of Computer Science Regina, Saskatchewan, S4S 0A2, Canada E-mail: [email protected]

Library of Congress Control Number: 2006928942

CR Subject Classification (1998): I.2, H.2.4, H.3, F.4.1, F.1, I.5, H.4 LNCS Sublibrary: SL 7 – Artificial Intelligence ISSN ISBN-10 ISBN-13

0302-9743 3-540-36297-5 Springer Berlin Heidelberg New York 978-3-540-36297-5 Springer Berlin Heidelberg New York

This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. Springer is a part of Springer Science+Business Media springer.com © Springer-Verlag Berlin Heidelberg 2006 Printed in Germany Typesetting: Camera-ready by author, data conversion by Scientific Publishing Services, Chennai, India Printed on acid-free paper SPIN: 11795131 06/3142 543210

Zdzislaw Pawlak (1926-2006) (picture taken at RSCTC 1998, Warsaw, Poland)

Preface

This volume contains the papers selected for presentation at the First International Conference on Rough Sets and Knowledge Technology (RSKT 2006) organized in Chongqing, P. R. China, July 24-26, 2003. There were 503 submissions for RSKT 2006 except for 1 commemorative paper, 4 keynote papers and 10 plenary papers. Except for the 15 commemorative and invited papers, 101 papers were accepted by RSKT 2006 and are included in this volume. The acceptance rate was only 20%. These papers were divided into 43 regular oral presentation papers (each allotted 8 pages), and 58 short oral presentation papers (each allotted 6 pages) on the basis of reviewer evaluation. Each paper was reviewed by two to four referees. Since the introduction of rough sets in 1981 by Zdzislaw Pawlak, many great advances in both the theory and applications have been introduced. Rough set theory is closely related to knowledge technology in a variety of forms such as knowledge discovery, appro