an analysis of the exponential decay principle in probabilistic

《an analysis of the exponential decay principle in probabilistic》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、TheoreticalComputerScience410(2009)40674084ContentslistsavailableatScienceDirectTheoreticalComputerSciencejournalhomepage:www.elsevier.com/locate/tcsAnanalysisoftheexponentialdecayprincipleinprobabilistictrustmodelsEhabElSalamounya,KarlTikjøbKrukowb,VladimiroSass

2、onea,aECS,UniversityofSouthampton,UKbTrifork,Aarhus,DenmarkarticleinfoabstractResearchinmodelsforexperience-basedtrustmanagementhaseitherignoredtheproblemThispaperisdedicatedtoProfessorMogensofmodellingandreasoningaboutdynamicallychangingprincipalbehaviour,orprov

3、idedNielsenontheoccasionofhis60thadhocsolutionstoit.Probabilitytheoryprovidesafoundationforaddressingthisandbirthday,whoalongtheyearssharedwithmanyotherissuesinarigorousandmathematicallysoundmanner.UsingHiddenMarkovusresearchandmuchmore.ToyourModelstorepresentprin

4、cipalbehaviours,wefocusoncomputationaltrustframeworkssharpnessofmindandkindnessofspirit.basedonthe`beta'probabilitydistributionandtheprincipleofexponentialdecay,andKeywords:deriveapreciseanalyticalformulafortheestimationerrortheyinduce.ThisallowsTrustpotentialadop

5、tersofbeta-basedcomputationaltrustframeworksandalgorithmstobetterComputationaltrustunderstandtheimplicationsoftheirchoice.Probabilistictrustmodels'2009ElsevierB.V.Allrightsreserved.HiddenMarkovModelsDecayprincipleBetadistribution1.IntroductionThispaperconcernsexpe

6、rience-basedtrustmanagementsystems.Theterm`trustmanagement'isusuallyassociatedwiththetraditionalcredential-basedtrustmanagementsystemsinwhichtrustisestablishedprimarilyasafunctionofavailablecredentials(seee.g.[2]).Inexperience-basedsystems,trustinaprincipalisrepre

7、sentedasafunctionofinformationaboutpastprincipalbehaviour.Thisencompassesalsoreputationinformation,i.e.,informationaboutprincipalbehaviourobtainednotbydirectobservationbutfromothersources(e.g.,ratingsmadebyotherprincipals).Thereareseveralapproachestoexperience-bas

8、edtrustmanagement;thispaperisconcernedwiththeprobabilisticapproach,whichcanbroadlybecharacterisedasaimingtobuildprobabilisticmodelsuponwhichtobasepredic