Advances in Artificial Intelligence - IBERAMIA-SBIA 2006 2nd Interna

The Brazilian Arti?cial Intelligence (AI) community decided in 2004 to organize an International Joint Conference, joining IBERAMIA 2006 (the 10th Ibero-American Arti?cial Intelligence Conference), SBIA 2006 (the 18th Brazilian Arti?cial Int- ligence Symp

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Subseries of Lecture Notes in Computer Science

4140

Jaime Simão Sichman Helder Coelho Solange Oliveira Rezende (Eds.)

Advances in Artificial Intelligence – IBERAMIA-SBIA 2006 2nd International Joint Conference: 10th Ibero-American Conference on AI 18th Brazilian AI Symposium Ribeirão Preto, Brazil, October 23-27, 2006 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 Jaime Simão Sichman University of São Paulo, Computer Engineering Department Av. Prof. Luciano Gualberto, tv. 3, 158, 05508-970 São Paulo, SP, Brazil E-mail: [email protected] Helder Coelho University of Lisbon, Department of Informatics Edifício C6, Campo Grande, 1749-016 Lisboa, Portugal E-mail: [email protected] Solange Oliveira Rezende University of São Paulo, Department of Computer Science Av. Trabalhador São-Carlense, 400, 13560-970 São Carlos, SP, Brazil E-mail: [email protected]

Library of Congress Control Number: 2006933826

CR Subject Classification (1998): I.2.6-7, I.2, F.1.1, F.4.2-3, F.2 LNCS Sublibrary: SL 7 – Artificial Intelligence ISSN ISBN-10 ISBN-13

0302-9743 3-540-45462-4 Springer Berlin Heidelberg New York 978-3-540-45462-5 Springer Berlin Heidelberg New York

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Preface

The Brazilian Artificial Intelligence (AI) community decided in 2004 to organize an International Joint Conference, joining IBERAMIA 2006 (the 10th Ibero-American Artificial Intelligence Conference), SBIA 2006 (the 18th Brazilian Artificial Intelligence Symposium), and SBRN 2006 (the 9th Brazilian Neural Networks Symposium). This decision was a consequence of the successful event organized in 2000, when the First International Joint Conference IBERAMIA/ SBIA 2000 (7th IberoAmerican Artificial Intelligence Conference and 15th Brazilian Artificial Intelligence Symposium) occurred in Brazil. Moreover, in 2006 the artificial intelligence community celebrated the golden anniversary of the 1956 Dartmouth Conference that marked the beginning of artificial intelligence as a research field. SBIA 2006 was the 18th conference of the SBIA conference series, which is the leading Brazilian conf