Lecture Notes in Artificial Intelligence 1695 Subseries ofLectureNotesin ComputerScience Editedby J.G. Carbonelland J. Siekmann Lecture Notes in Computer Science Editedby G.Goos,J. Hartmanisand J.van Leeuwen 3 Berlin Heidelberg NewYork Barcelona HongKong London Milan Paris Singapore Tokyo Pedro Barahona Jose´ J. Alferes (Eds.) Progress in Artificial Intelligence 9th Portuguese Conference on Artificial Intelligence, EPIA ’99 ´ Evora, Portugal, September 21-24, 1999 Proceedings 1 3 SeriesEditors JaimeG.Carbonell, CarnegieMellonUniversity,Pittsburgh,PA,USA Jo¨rgSiekmann, UniversityofSaarland,Saarbru¨cken,Germany VolumeEditors PedroBarahona UniversidadeNovadeLisboa,DepartamentodeInforma´tica QuintadaTorre,P-2825-114Caparica,Portugal E-mail:[email protected] Jose´J.Alferes UniversidadedeE´vora,DepartamentodeMatema´tica R.Roma˜oRamalho59,P-7000E´vora,Portugal E-mail:[email protected] Cataloging-in-Publicationdataappliedfor DieDeutscheBibliothek-CIP-Einheitsaufnahme Progressinartificialintelligence:proceedings/9thPortugueseConferenceon ArtificialIntelligence,EPIA’99,E´vora,Portugal,September22-24,1999. PedroBarahona;Jose´J.Alferes(ed.).-Berlin;Heidelberg;NewYork; Barcelona;HongKong;London;Milan;Paris;Singapore;Tokyo:Springer, 1999 (Lecturenotesincomputerscience;Vol.1695:Lecturenotesinartificial intelligence) ISBN3-540-66548-X CRSubjectClassification(1998):I.2 ISBN3-540-66548-X Springer-VerlagBerlinHeidelbergNewYork Thisworkissubjecttocopyright.Allrightsarereserved,whetherthewholeorpartofthematerialis concerned,specificallytherightsoftranslation,reprinting,re-useofillustrations,recitation,broadcasting, reproductiononmicrofilmsorinanyotherway,andstorageindatabanks.Duplicationofthispublication orpartsthereofispermittedonlyundertheprovisionsoftheGermanCopyrightLawofSeptember9,1965, initscurrentversion,andpermissionforusemustalwaysbeobtainedfromSpringer-Verlag.Violationsare liableforprosecutionundertheGermanCopyrightLaw. (cid:1)c Springer-VerlagBerlinHeidelberg1999 PrintedinGermany Typesetting:Camera-readybyauthor SPIN10704517 06/3142–543210 Printedonacid-freepaper Preface The Portuguese Association for Arti(cid:12)cial Intelligence (APPIA) has been regu- larly organising the Portuguese Conference on Arti(cid:12)cial Intelligence (EPIA). This ninth conference follows previous ones held in Porto (1985), Lisboa (1986), Braga (1987), Lisboa (1989), Albufeira (1991), Porto (1993), Funchal (1995) andCoimbra(1997).Startingin1989,theconferenceshavebeenheldbiennially (alternating with an APPIA Advanced School on Arti(cid:12)cial Intelligence) and become truly international: English has been adopted as the o(cid:14)cial language and the proceedings are published in Springer’s LNAI series. The conference has recon(cid:12)rmed its high international standard this year, largely due to its programme committee, composed of distinguished researchers inavarietyofspecialitiesinArti(cid:12)cialIntelligence,halfofthemfromPortuguese universities.Thishasattractedasigni(cid:12)cantinternationalinterest,wellexpressed bythenumberofpaperssubmitted(66),from17di(cid:11)erentcountries,29ofwhich are by Portuguese researchers. From the 66 papers submitted, about one third of them (23) were selected fororalpresentationandhavebeenpublishedinthisvolume.Thereviewprocess enabledtheselectionofhighqualitypapers,eachpaperbeingreviewedbytwoor threereviewers,eitherfromtheprogrammecommitteeorbytheirappointment. We would like to thank all of the reviewers for their excellent and hard work. We would also like to thank the invited speakers, Pascal Van Hentenryck, Nada Lavra(cid:20)c and Klaus Fischer, for their contribution to EPIA’99, which has signi(cid:12)cantly boosted interest in the conference. Their invited lectures are pre- sented in a separate section of this volume. We should also thank Pavel Brazdil and Terrance Swift for their tutorials. As in previous EPIA conferences, two workshops were organised in associa- tion with this one, one in the area of Data Mining (EKDB-99) and the other in Natural Language Processing (PROPOR-99). We would like to thank the orga- nisersfortheire(cid:11)orts,inparticular,FernandoMouraPires,GabrielaGuimara~es and Al(cid:19)(cid:16)pio Jorge (EKDB-99), and Gabriel Pereira Lopes, Irene Pimenta Rodri- gues and Paulo Quaresma (PROPOR-99). Finally, we would like to thank all the people who helped us organise the conference, and in particular, Jorge Cruz for his help in the publication of this volume. The conference would not have been possible without the support of a num- berofinstitutions,whichwewouldliketopubliclyacknowledge:Fundac(cid:24)~aoparaa Ci^enciaeTecnologia,Fundac(cid:24)~aoCalousteGulbenkian,ESPRITNoECompulog- Net, Logic Programming Associates, Alcatel Portugal, East(cid:19)ecnica and Valnet Sado. We would also like to thank the Departamento de Informa(cid:19)tica da Univer- sidade Nova de Lisboa and the Departamento de Matem(cid:19)atica da Universidade de E(cid:19)vora for their support in the organisation of the conference. July 1999 Pedro Barahona Jos(cid:19)e Ju(cid:19)lio Alferes EPIA’99 9th Portuguese Conference on Arti(cid:12)cial Intelligence (cid:19) Evora, Portugal, September 1999 Conference Chair: Jos(cid:19)e Ju(cid:19)lio Alferes Programme Chair: Pedro Barahona Programme Committee Jos(cid:19)e Ju(cid:19)lio Alferes Univ. E(cid:19)vora Pedro Barahona Univ. Nova Lisboa Pavel Brazdil Univ. Porto Gerhard Brewka Univ. Leipzig - Germany Am(cid:19)(cid:16)lcar Cardoso Univ. Coimbra Philippe Codognet Univ. Paris VI - France Helder Coelho Univ. Lisboa Ernesto Costa Univ. Coimbra Carlos Pinto Ferreira Univ. T(cid:19)ecnica Lisboa Udo Hahn Univ. Freiburg - Germany Werner Horn Univ. Vienna - Austria Elpida Keravnou Univ. Cyprus - Cyprus Vladimir Lifschitz Univ. Texas at Austin - USA Gabriel Pereira Lopes Univ. Nova Lisboa Joa~o Pav~ao Martins Univ. T(cid:19)ecnica Lisboa Ryszard Michalski Univ. George Mason - USA Wolfgang Nejdl Univ. Hannover - Germany Eug(cid:19)enio Oliveira Univ. Porto Lu(cid:19)(cid:16)s Moniz Pereira Univ. Nova Lisboa Fernando Moura Pires Univ. Nova Lisboa Henri Prade Univ. Toulouse - France Erik Sandewall Univ. Link¨opping - Sweden Manuela Veloso Univ. Carnegie Mellon - USA VIII Organization List of Reviewers Am(cid:19)(cid:16)lcar Cardoso Joaquim Costa Ana Paula Rocha Jorge Cruz Ana Paula Silva Jos(cid:19)e Ju(cid:19)lio Alferes Anabela Simo~es Jos(cid:19)e Luiz Fiadeiro Andreas Herzig Jos(cid:19)e Manuel Fonseca Anto(cid:19)nio Menezes Leit~ao Leonor Melo Ant(cid:19)onio Porto Lu(cid:19)(cid:16)s Antunes Arlindo Silva Lu(cid:19)(cid:16)s Correia Benedita Malheiro Lu(cid:19)(cid:16)s Moniz Bernardete Ribeiro Lu(cid:19)(cid:16)s Moniz Pereira Bertrand Couasnon Lu(cid:19)(cid:16)s Monteiro Carlos Bento Lu(cid:19)(cid:16)s Paulo Reis Carlos Dam(cid:19)asio Lu(cid:19)(cid:16)s Torgo Carlos Pinto Ferreira Margarida Mamede Christian Holzbau¨r Maria dos Rem(cid:19)edios Cravo Elpida Keravnou Miguel Ferrand Enrico Giunchiglia Miguel Filgueiras Erik Sandewall Muriel Jourdan Ernesto Costa Nelma Moreira Eug(cid:19)enio Oliveira Norman McCain Fernando Moura Pires Paolo Petta Francisco Baptista Pereira Paulo Quaresma Francisco C^amara Pereira Pavel Brazdil Fr(cid:19)ed(cid:19)eric Goualard Pedro A. Matos Gabriel Pereira Lopes Pedro Barahona Gabriela Guimara~es Penousal Machado Gerhard Brewka Philippe Codognet Grac(cid:24)a Gaspar Salvador Abreu Helder Coelho Sergei Soloviev Henri Prade Udo Hahn Hudson Turner Vladimir Lifschitz Irene Pimenta Rodrigues Werner Horn Jo~ao Balsa Werner Nutt Jo~ao Gama Wolfgang Nejdl Jo~ao Moura Pires Yan Georget Joa~o Pava~o Martins Zahir Maazouzi Table of Contents Invited Lectures Combinatorial Optimization in OPL Studio ........................ 1 P.VanHentenryck,L.Michel,P.Laborie,W.Nuijten,andJ.Rogerie Challenges for Inductive Logic Programming ....................... 16 Nada Lavra(cid:20)c Holonic Multiagent Systems - Theory and Applications ............. 34 Klaus Fischer Constraint Programming On the Accuracy and Running Time of GSAT ...................... 49 Deborah East and Mirosl aw Truszczyn(cid:19)ski The Impact of Branching Heuristics in Propositional Satis(cid:12)ability 62 Algorithms Jo~ao Marques-Silva A Tractable Subclass of the Block Algebra: Constraint Propagation 75 and Preconvex Relations PhilippeBalbiani,Jean-Franc(cid:24)oisCondotta,andLuisFarin~asdelCerro Is PL a Tractable Language? ...................................... 90 2 Aida Vit(cid:19)oria and Margarida Mamede Natural Language Processing Inclusion of Picture Sequences in Generated Documents ............ 99 Kees van Deemter and Richard Power Using LocalMaxs Algorithm for the Extraction of Contiguous and Non-contiguous Multiword Lexical Units 113 Joaquim Ferreira da Silva, Ga¨el Dias, Sylvie Guillor(cid:19)e, and Jos(cid:19)e Gabriel Pereira Lopes On the Formal Distinction between Literal and Figurative Language 133 Udo Hahn and Katja Markert X Table of Contents Spatial Reasoning Qualitative Theory of Shape and Structure ......................... 148 Vincent Dugat, Pierre Gambarotto, and Yannick Larvor Logic Programming A New Formulation of Tabled Resolution with Delay ............... 163 Terrance Swift YapOr:AnOr-ParallelPrologSystemBasedonEnvironmentCopying 178 Ricardo Rocha, Fernando Silva, and V(cid:19)(cid:16)tor Santos Costa Theorem Proving Structure Theorems for Closed Sets of Implicates/Implicants in 193 Temporal Logic I. P. de Guzma(cid:19)n, P. Cordero, and M. Enciso Critical Agents Supporting Interactive Theorem Proving ........... 208 Christoph Benzmu¨ller and Volker Sorge Reasoning Under Uncertainty A Practical Approach to Fusing Prioritized Knowledge Bases ....... 222 Salem Benferhat, Didier Dubois, Henri Prade, and Mary-Anne Williams Fuzzy Behaviors and Behavior Arbitration in Autonomous Vehicles . 237 Ant(cid:19)onio Abreu and Lu(cid:19)(cid:16)s Correia Multi-agent Systems A Multi-agent System for Electronic Commerce Including Adaptative 252 Strategic Behaviours Henrique Lopes Cardoso, Max Schaefer, and Eug(cid:19)enio Oliveira Choice and Institutions in Agent Societies .......................... 267 Jos(cid:19)e Castro Caldas and Helder Coelho Analytic Modal Revision for Multi-agent Systems .................. 282 Paolo Di Giusto and Guido Governatori DecisionsBaseduponMultipleValues:TheBVGAgentArchitecture 297 Lu(cid:19)(cid:16)s Antunes and Helder Coelho Table of Contents XI Abduction and Revision Temporal Abductive Diagnosis ..................................... 312 Elpida T. Keravnou and John Washbrook A New Approach to Base Revision ................................. 327 Paolo Di Giusto and Guido Governatori Improving Optical Music Recognition by Means of Abductive 342 Constraint Logic Programming Miguel Ferrand, Joa~o Alexandre Leite, and Am(cid:19)(cid:16)lcar Cardoso Genetic Algorithms Genetic Algorithms for Solving Open Shop Scheduling Problems .... 357 Sami Khuri and Sowmya Rao Miryala Expressing Population Based Optimization Heuristics Using PLATO 369 Lu(cid:19)(cid:16)s Correia, Fernando Moura-Pires, and Joaquim N. Apar(cid:19)(cid:16)cio Author Index 385
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