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1、WangY.VassilevaJ.(2003)TrustandReputationModelinPeer-to-PeerNetworks,Proc.ofIEEEConferenceonP2PComputing,Linkoeping,Sweden,September2003.TrustandReputationModelinPeer-to-PeerNetworksYaoWang,JulitaVassilevaUniversityofSaskatchewan,ComputerScienceDepartment,Saskatoo
2、n,SK,S7N5A9,Canada{yaw181,jiv}@cs.usask.caAbstracttheycangetaway.Sometraditionalsecuritytechniques,suchasserviceprovidersrequiringaccessauthorization,orconsumersrequiringserverauthentication,areusedasItisimportanttoenablepeerstorepresentandupdateprotectionfromknow
3、nmaliciouspeers.However,theytheirtrustinotherpeersinopennetworksforsharingfiles,cannotpreventfrompeersprovidingvariable-qualityandespeciallyservices.Inthispaper,weproposeaservice,orpeersthatareunknown.MechanismsfortrustBayesiannetwork-basedtrustmodelandamethodfora
4、ndreputationcanbeusedtohelppeersdistinguishgoodbuildingreputationbasedonrecommendationsinpeer-to-frombadpartners.Thispaperdescribesatrustandpeernetworks.Sincetrustismulti-faceted,peersneedtoreputationmechanismthatallowspeerstodiscoverdevelopdifferentiatedtrustindi
5、fferentaspectsofotherpartnerswhomeettheirindividualrequirementsthroughpeers’capability.Thepeer’sneedsaredifferentinindividualexperienceandsharingexperienceswithotherdifferentsituations.Dependingonthesituation,apeermaypeerswithsimilarpreferences.needtoconsideritstr
6、ustinaspecificaspectofanotherTherestofthispaperisorganizedasfollows:section2peer’scapabilityorinmultipleaspects.Bayesiannetworksdiscussesthedefinitionsoftrustandreputationandtheirprovideaflexiblemethodtopresentdifferentiatedtrustandcharacteristics.Section3introduc
7、esourapproachtocombinedifferentaspectsoftrust.TheevaluationofthedevelopingaBayesiannetwork-basedtrustmodelandamodelusingasimulationshowsthatthesystemwherepeersmethodforbuildingreputationbasedonrecommendations.communicatetheirexperiences(recommendations)Theexperime
8、ntdesignandresultsarepresentedinSectionsoutperformsthesystemwherepeersdonotshare4and5.Section6discussesrelatedworkontrustandrecommendationswitheachother
