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Symbolic and Quantitative Approaches to Reasoning and Uncertainty: European Conference, ECSQARU'99, London, UK, July 59, 1999, ,Used
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Uncertaintyisanincreasinglyimportantresearchtopicinmanyareasofc puterscience. Manyformalismsarebeingdeveloped, withmuchinterestatthe theoryleveldirectedatdevelopingabetterunderstandingoftheformalismsand identifyingrelationshipsbetweenformalisms, andatthetechnologyleveldirected atdevelopingsoftwaretoolsforformalismsandapplicationsofformalisms. ThemainEuropeanforumforthesubjectistheEuropeanConferenceon SymbolicandQuantitativeApproachestoReasoningandUncertainty(EC SQARU). FollowingthesuccessofthepreviousECSQARUconferences, heldin Marseilles(1991), Granada(1993), Fribourg(1995), andBonn(1997), the?fth conferenceintheserieswasheldatUniversityCollegeLondoninJuly1999. ThisvolumecontainspapersacceptedforpresentationatECSQARU'99. In additiontothemainconference, twoworkshopswereheld. The?rstwason DecisionTheoreticandGameTheoreticAgents, chairedbySimonParsonsand MikeWooldridge, andthesecondwasonLogicalandUncertaintyModelsfor InformationSystems, chairedbyFabioCrestaniandMouniaLalmas. Selected papersfromtheworkshopsarealsoincludedintheseproceedings. Weareindebitedtotheprogrammmecommitteefortheire?ortinorganising theprogramme, totheinvitedspeakers, andtothepresentersofthetutorials. Furthermore, wegratefullyacknowledgethecontributionofthemanyreferees whowereinvolvedinthereviewingprocess. Finallywewouldliketothankthe DepartmentofComputerScienceatUniversityCollegeLondonforadminist tivesupport. ProgrammeCommittee TheprogrammecommitteewaschairedbyAnthonyHunter(UniversityCollege London), andcomprisedDovGabbay(King'sCollegeLondon), FinnJensen (AalborgUniversity), RudolfKruse(UniversityofMagdeburg), SimonParsons (QueenMary, UniversityofLondon)HenriPrade(IRIT, Toulouse), Torsten Schaub(UniversityofPotsdam), andPhilippeSmets(ULB, Bruxelles). Reviewers Theprogrammecommitteeisverygratefulforallthehardworkcontributed bythereviewers. Hopefully, wehavenotmissedanyonefromthefollowing list: BruceD'Ambrosio, FlorenceBannay, SalemBenferhat, PhilippeBesnard, HuguesBersini, ChristianBorgelt, RachelBourne, StefanBrass, LaurenceCholvy, RogerCooke, AdnanDarwiche, YannisDimopoulos, JurgenDix, DidierDubois, UweEgly, LindavanderGaag, JoergGebhardt, SiegfriedGottwald, RolfHaenni, JeanYvesJa?ray, RadimJirousek, RuthKempson, U?eKjaerulf, FrankK wonn, AljoschaKlose, JuergKohlas, PaulKrause, GerhardLakemeyer, Mounia Lalmas, JeromeLang, KimG. Larsen, NorbertLehmann, T. Y. Lin, Thomas Linke, KhalidMellouli, JeromeMengin, J. J. Ch. Meyer, SanjayModgil, Yves Moinard, Sera?nMoral, DetlefNauck, AnnNicholson, PascalNicolas, Dennis VI Preface Nilsson, KristianG. Olesen, RainerPalm, ZdzislawPawlak, VincentRisch, Regis Sabbadin, CamillaSchwind, PrakashP. Shenoy, MilanStudeny, HeikoTimm, HansTompits, MarcoValtorta, andCeesWitteven. April1999 AnthonyHunterandSimonParsons TableofContents Onthedynamicsofdefaultreasoning GrigorisAntoniou. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Nonmonotonicandparaconsistentreasoning: Frombasicentailmentsto plausiblerelations OferArieliandArnonAvron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 AcomparisonofsystematicandlocalsearchalgorithmsforregularCNF formulas RamonBejarandFelipManya. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Queryansweringinprioritizeddefaultlogic FaridBenhammadi, PascalNicolasandTorstenSchaub. . . . . . . . . . . . . . . . . . . . 32 Updatingdirectedbeliefnetworks BoutheinaBenYaghlaneandKhaledMellouli. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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