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1、Proceedingsofthe29thChineseControlConferenceJuly29-31,2010,Beijing,ChinaAReliabilityImprovementPredictiveApproachtoSoftware*TestingwithBayesianMethodBAICheng-Gang,JIANGChang-Hai,CAIKai-YuanNationalKeyLaboratoryofScienceandTechnologyonHolisticControlDepart
2、mentofAutomaticControl,BeihangUniversity,Beijing100191,P.R.ChinaE-mail:bcg@buaa.edu.cn,changhai.jiang@gmail.com,kycai@buaa.edu.cnAbstract:Thecapabilityofimprovingsoftwarereliabilityisoneofthemainobjectivesofsoftwaretesting.However,theprevioustestingmethod
3、sdidnotpaymuchattentiontohowtoimprovesoftwaretestingstrategybasedonsoftwarereliabilityimprovement.Therelationshipbetweensoftwaretestingandsoftwarereliabilityisverycomplexandthisismainlyduetothecomplexityofsoftwareproductsanddevelopmentprocesses.Thesoftwar
4、etestingstrategywithimprovingreliabilityonlineneedstopossesstheabilitytopredictreliability.Modelpredictivecontrolprovidesagoodframeworktoimprovepredictiveeffectonline.However,oneofthemainissuesinmodelpredictivecontrolishowtoestimatetheconcernparameter.Int
5、hiscase,Bayesianmethodisusedtoestimatetheconcernparameter:reliability.ThisproposedreliabilityimprovementpredictiveapproachtosoftwaretestingwithBayesianmethodcanoptimizetestallocationschemeonline.Thecasestudyshowsthatitisnotdefinitelytrueforasoftwaretestin
6、gmethodthatcanfindmoredefectsthanotherscangethigherreliability.Andthecasestudyalsoshowsthattheproposedapproachcangetbetterresultinthesenseofimprovingreliabilitythanrandomtesting.KeyWords:SoftwareTesting,SoftwareReliability,ModelPredictiveControl,BayesianM
7、ethoduncoverearlierthosefailuresthataremostlikelyinactual1INTRODUCTIONoperation,thusdirectingeffortsatfixingthemostimportantSoftwaretestingisoneofthemostimportantmethodstobugs.However,sometimewecannotgetgoodresultsonlybyguaranteeandimprovesoftwarereliabil
8、ity.Intheoperationaltesting.Wegiveasimpleexampletoexplainit.traditionalopinion,themainaimofsoftwaretestingisnotWeassumethattheinputdomainofaprogramisdividedtoprovesoftwareiscorrect,buttodetectsoftwaredefects[1].into
