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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 研发项目风险概率评估方法研究-基于动态贝叶斯网络研究视角-张俊光
2014-02-0671072123201311151972-、1988-。———100083。LeakyNoisy-orgate。。DOI10.13956/j.ss.1001-8409.2015.02.28F224A1001-8409201502-0131-05ResearchandDevelopmentProjectRiskProbabilityAssessment———BasedonDynamicBayesianNetworkZHANGJun-guangXUZhen-chaoSchoolofEconomicsandManagementUniversityofScienceandTechnologyBeijingBeijing100083AbstractAresearchanddevelopmentR&DprojectriskprobabilityassessmentmodelbasedondynamicBayesiannet-workisproposedwhichcombinestimeseriestheoryandBayesiantheory.Throughprobabilityanddirectedacyclicgraphitexpressesthechangingrelationshipofriskfactorsstatebetweendifferenttimesegments.MoreoverinthecaseofmissingdatasamplesitusestheLeakyNoisy-orgatemodeltocalculatetheconditionalprobability.Thenitcanobtainamoreob-jectiveassessmentresult.ComparedwiththeassessmentofstaticBayesiannetworksdynamicBayesiannetworkmodelen-hancestheR&Dprojectriskprobabilityassessmentaccuracywhichcanprovidesamorescientificbasisforriskcontrol.KeywordsprojectmanagementstaticBayesiannetworksdynamicBayesiannetworkR&Dprojectriskprobability。StandishGroup28%1。BarryBoehm。RE=P×CPC2。13EM、4。。。。·131·。、、、、、、、、。LuigiPortinale5AnnMJulia6。、78。。LeakyNoisy-orgate。22.1X=X1X2…XnB<BsBp>BsXBpCPT。XPX1X2…Xn=∏ni=1PXi|PaXi1t10111。2。BoX11PXB→X1X2PXt+1Xtt。121213。1Bo2B→X0X1…XTPX1X2…XT=PB0X1∏Tt=1PB→Xt+1|Xt2PXtXt-1XititPaXitNNPXtXt-1=∏Ni=1PXitPaXit3PX1N1T=∏Ni=1PXi1|PaXi1×∏Tt=2∏Ni=1PB→Xit|PaXit42.2YHenrionLeakProbabilityLeakyNoisy-orgate14。LeakyNoisy-orgateYXiXallXallXiPiPallXlPY|Xi=Pi+Pall-PiPall5PY|Xi=Pall656PiPi=PY|Xi-PY|Xi1-PY|Xi7·231·4YP1…Pi…PnXLPLYPY=T=1-1-Pl∏iXi∈Xp1-Pi83。、、。。XX1、X2、X3。3。3。Genie1516。Genie。Bo4。4BoBoB→5。5B→state0=1state1=0。1007070/100=0.7。PX1=1=0.7PX2=1=0.6PX3=1=0.4。PX=1|X1=1=0.7PX=1|X2=1=0.8PX=1|X3=1=0.6PX=1|X1=0=0.5PX=1|X2=0=0.6PX=1|X3=0=0.4。8X1。1XXΦX1X2PX1=10.1000.4600.550PX1=00.9000.5400.450XX3X1X2X1X3PX1=10.4000.7300.640PX1=00.6000.2700.360XX2X3X1X2X3PX1=10.7000.820PX1=00.3000.180Bo·331·XPXT6。6PXTPX1=1=0.5PX2=1=0.4PX3=1=0.4。3PB→=0.22770.772347、89。7PX1T+18PX2T+19PX3T+1。B→10。10PXT+12。2State00.6070.4460.4280.356State10.3930.5540.5720.644411。113。·431·3State00.6070.5010.4760.372State10.3930.4990.5240.628。。。BS=1n∑ni=1Pi-Oj29PinOj10。0~101。。。state10.16960.2053。。5。。。LeakyNoisy-orgate。Gibbs。。1ProjectFailureandSuccessResearchReportR.StandishGroupInternationalChaos2005.2BoehmBW.SoftwareRiskManagementPrinciplesandPracticesJ.SoftwareIEEE19918132-41.3.J.201046762-65.4.EM-GAJ.20102741360-1362.5LuigiPortinaleDanieleCodettaRaiteriStefaniaMontani.Support-ingReliabilityEngineersinExploitingthePowerofDynamicBayes-ianNetworksJ.InternationalJournalofApproximateReasoning2010512179-195.6NicholsonAEFloresMJ.CombiningStateandTransitionModelswithDynamicBayesianNetworksJ.EcologicalModelling20112223555-566.7.J.20132712135-139.8.CVaRJ.20132710111-115.9.J.201225526-30.10.M.2007.10.11.J.20093261-4.12DonatRLerayPBouillautLetal.ADynamicBayesianNet-worktoRepresentDiscreteDurationModelsJ.Neurocomputing2010734570-577.13.J.20101861856-1861.14Oni'skoADruzdzelMJWasylukH.LearningBayesianNetworkParametersfromSmallDataSetsApplicationofNoisy-ORGatesJ.InternationalJournalofApproximateReasoning2001272165-182.15.GeNIeJ.201124114-20.16.J.20098133-136.·531·
本文标题:研发项目风险概率评估方法研究-基于动态贝叶斯网络研究视角-张俊光
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