toward trust and reputation based web service selection a survey

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1、TowardTrustandReputationBasedWebServiceSelection:ASurveyYaoWang,JulitaVassilevaDepartmentofComputerScience,UniversityofSaskatchewan176ThorvaldsonBuilding,110SciencePlace,Saskatoon,Saskatchewan,S7N5C9,CanadaEmail:yaw181@cs.usask.ca,jiv@cs.usask.caAbstract:Atrustandr

2、eputationmechanismisamechanismqualityofservice(QoS)metrics.Currentwebserviceusingconsumers’feedbackstoidentifygoodservicesfromtechnologycannotsupportQoSorothernon-functionalbadones.Comparedwithotherapproaches,ithasmoreaspectsofaservice.Aserviceconsumerisforcedtoeit

3、heradvantagesinsolvingtheselectionproblemforwebservices.makeaselectionmanuallyatthedesigntimedependingonThepaperproposesatypologytoclassifytrustandreputationsomeexternalinformationresourcesorjustmakearandomsystemsusingthethreecriteria,centralizedordecentralized,cho

4、ice.Arandomchoiceisablindchoice.Inanopenpersonorresource,globalorpersonalized.Inspiredbytheenvironmentwhereanyonecanpublishservicesaconsumercriteria,somepotentialresearchdirectionsforwebservicemayselectapoorquality,time-consuming,expensive,orselectionarepointedout.

5、evenharmfulservice.Therefore,mechanismsareneededtoKeywords:Webserviceselection,trust,reputationhelpconsumerstodistinguishgoodfrombadservices.Thewebserviceselectioncanbedonebypeople,whocouldbe1.Introductionsoftwaredevelopersand/orthemembersofthecommunitythatsoftware

6、developersareserving,accordingtotheirTheServiceOrientedArchitecture(SOA)is“anarchitecturerequirementsandtheserviceinformation(functionalandthatrepresentssoftwarefunctionalityasdiscoverableservicesnon-functional)fromawebservicesystem[9].Butthistaskonthenetwork”[13].

7、AsanimplementationofSOA,webbecomesverytediousandtime-consumingwhenpeoplehaveservicesaredefinedasasetofstandards,SOAP,UDDI,toexaminelotsofvariousservicesthathavedifferentfeaturesWSDL,whichenableaflexiblewayforapplicationstoandvaryinglevelsofQoS.Thevarietyofservicesc

8、anbeinteractwitheachotherovernetworks.SOAP(SimpleObjectexpectedtogrowveryfastwiththeseamlessintegrationofAccessProtocol)istheprotocolforapplicati