Taking Class Importance into Account

In many classification problems, some classes are more important than others from the users’ perspective. In this paper, we introduce a novel approach, weighted classification, to address this issue by modeling class importance through weights in the [0,1

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Subseries of Lecture Notes in Computer Science

4413

Marcin S. Szczuka Daniel Howard ´ ezak Haeng-kon Kim Dominik Sl¸ Tai-hoon Kim Il-seok Ko Geuk Lee Peter M.A. Sloot (Eds.)

Advances in Hybrid Information Technology First International Conference, ICHIT 2006 Jeju Island, Korea, November 9-11, 2006 Revised Selected Papers

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Series Editors Jaime G. Carbonell, Carnegie Mellon University, Pittsburgh, PA, USA Jörg Siekmann, University of Saarland, Saarbrücken, Germany Volume Editors Marcin S. Szczuka Warsaw University, Poland, [email protected] Daniel Howard QinetiQ Group PLC, Malvern, UK, [email protected] ´ ezak Dominik Sl¸ Infobright Inc, Toronto, ON, Canada, [email protected] Haeng-kon Kim Daegu Catholic University, Gyeongbuk, Korea, [email protected] Tai-hoon Kim Hannam University, Daejeon, Korea, [email protected] Il-seok Ko Dongguk University, Korea, [email protected] Geuk Lee Hannam University, Daejeon, Korea, [email protected] Peter M.A. Sloot University of Amsterdam, The Netherlands, [email protected]

Library of Congress Control Number: 2007941600 CR Subject Classification (1998): I.2, H.4, H.3, J.1, H.5, K.6, K.4 LNCS Sublibrary: SL 7 – Artificial Intelligence ISSN ISBN-10 ISBN-13

0302-9743 3-540-77367-3 Springer Berlin Heidelberg New York 978-3-540-77367-2 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 2007 Printed in Germany Typesetting: Camera-ready by author, data conversion by Scientific Publishing Services, Chennai, India Printed on acid-free paper SPIN: 12206988 06/3180 543210

Preface

As information technologies (IT) become specialized and fragmented, it is easy to lose sight that many topics in IT have common threads and because of this, advances in one sub-discipline may transmit to another. The presentation of results between different sub-disciplines of IT encourages this interchange for the advancement of IT as a whole. Of particular interest is the hybrid approach or combining ideas from one discipline with those of another to achieve a result that is more significant than the sum of the individual parts. Through this hybrid philosophy, a new or common principle can be discovered which has the propensity to propagate throughout this multifaceted discipline. This volume comprises the selection of extended versions of papers that were presented in their shortened form at the 2006 International Con