KI 2003: Advances in Artificial Intelligence 26th Annual German

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Subseries of Lecture Notes in Computer Science

2821

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Andreas Günter Rudolf Kruse Bernd Neumann (Eds.)

KI 2003: Advances in Artificial Intelligence 26th Annual German Conference on AI, KI 2003 Hamburg, Germany, September 15-18, 2003 Proceedings

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Series Editors Jaime G. Carbonell, Carnegie Mellon University, Pittsburgh, PA, USA J¨org Siekmann, University of Saarland, Saarbr¨ucken, Germany Volume Editors Andreas Günter HITeC e. V. Universität Hamburg Fachbereich Informatik Vogt-Kölln-Str. 30, 22527 Hamburg, Germany E-mail: [email protected] Rudolf Kruse OvG-Universität Magdeburg Fakultät für Informatik Universitätsplatz 2, 39106 Magdeburg, Germany E-mail: [email protected] Bernd Neumann Universität Hamburg Fachbereich Informatik Vogt-Kölln-Str. 30, 22527 Hamburg, Germany E-mail: [email protected] Cataloging-in-Publication Data applied for A catalog record for this book is available from the Library of Congress. Bibliographic information published by Die Deutsche Bibliothek Die Deutsche Bibliothek lists this publication in the Deutsche Nationalbibliografie; detailed bibliographic data is available in the Internet at . CR Subject Classification (1998): I.2 ISSN 0302-9743 ISBN 3-540-20059-2 Springer-Verlag 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-Verlag. Violations are liable for prosecution under the German Copyright Law. Springer-Verlag Berlin Heidelberg New York a member of BertelsmannSpringer Science+Business Media GmbH http://www.springer.de © Springer-Verlag Berlin Heidelberg 2003 Printed in Germany Typesetting: Camera-ready by author, data conversion by PTP-Berlin GmbH Printed on acid-free paper SPIN: 10953594 06/3142 543210

Preface The German Conference on Artificial Intelligence is a traditional and unique yearly event which brings together the German AI community and an increasing number of international guests. While not as old as IJCAI (which first took place in 1969), KI 2003 marks a tradition which officially began in 1975 with a workshop of the working group “K¨ unstliche Intelligenz” of GI. Actually, there was one important AI conference in Germany before this, the “Fachtagung Cognitive Verfahren und Systeme” (Cognitive Methods and Systems) held in Hamburg in April 1973. This volume contains the proceedings of the 26th Annual German Conference on Artificial Intelligence. For the technical program we had 90 submissions from 22 countries. Out of these contributions 18 papers were accepted for oral present