授课老师林娟娟

1ProgressinWeb-baseddecisionsupporttechnologiesDecisionSupportSystems43(2007)1083–1095HemantK.Bhargava,DanielJ.Power,DaewonSunAvailableonline8August2005授課老師：林娟娟教授報告學生：簡子晴、李建翰ContentIntroductionHistoricalperspectiveThetypologiesofDSSWeb-baseddecisionsupportWeb-enableddecisionsupportRecentresearchinWeb-baseddecisionsupportConclusions2IntroductionDSS(DecisionSupportSystem)Thesesystemssupportcomplexnon-routinedecisions.PrimarypurposetoprocessdataintoinformationDSSsystemsaretypicallyemployedbytacticallevelmanagementwhosedecisionsandwhat-ifanalysisarelessstructured.Thisinformationsystemnotonlypresentstheresultsbutalsoexpandstheinformationwithalternatives.SomeDSSmethodologiesMathematicalModelingSimulationQueriesWhat-If(OLAP-Cubes)Datamining3IntroductionCurrentDSSfacilitateawidevarietyofdecisiontasks:informationgatheringandanalysismodelbuildingsensitivityanalysiscollaborationalternativeevaluationdecisionimplementation.ThegrowingWeb,theon-goingWeb-basedDSS

suchashealthcare,privatecompanies,government,andeducation4IntroductionAWeb-basedDSSdeliversdecisionsupporttoamanagerorbusinessanalystusinga“thin-client”Webbrowserinterface(JavaappletsorJavaScript)since1995(thediscussionoftheideaatthe3rdISDSSinHK.)ThisarticleexpandsandupdatesBhargavaandPower’s[5]statusreportonDSSandWebtechnologiesin2001.Section2-abriefhistoricaloverviewSection3-theextenttowhichWebtechnologiesimpactSection4-StateofPracticeSection5-StateofResearch5Historicalperspective6Historicalperspective7ThetypologiesofDSSImplementedapproachesdata-drivenDSS

helpmanagersorganize,retrieve,andanalyzelargevolumesofrelevantdatausingdatabasequeriesandOLAPtechniquesmodel-drivenDSS

useformalrepresentationsofdecisionmodelsandprovideanalyticalsupportusingthetoolsofdecisionanalysis,optimization,stochasticmodeling,simulation,statistics,andlogicmodelingWebtechnologiesCommunication-drivenDSSKnowledge-drivenDSSdocument-drivenDSS8Web-baseddecisionsupportDecisiontechnologiesasservicesWebservicesMessagingprotocolssuchasSOAPseveralXML-relatedlanguagesapplicationsfordatainterchangeThepriorarticlesWeb-enablementofmodel-drivenDSS(BhargavaandKrishnan[4])Web-enablingDSS(cf.,[15,16,38,43])Web-enableddata-intensiveapplications(Fraternali[22])geographicinformationsystemstools(Coddingtonetal.[14])optimizationandalternativeways(FourerandGoux[21])usingacompanyintranet(Sridhar[51])9Web-baseddecisionsupportRelevanttechnologies(BhargavaandKrishnan[4])server-sideimplementationCGI,Javaapplications,server-sidescriptinglanguages,ActiveServerpages,PHP,andJavaserverpagesclient-sideimplementationscriptinglanguages,Javaapplets,ActiveXcontrols,andbrowserpluginsdistributedimplementationCORBA,COM+,JavaRMI,andEnterpriseJavaBeansWeb-baseddecisionsupportWebtechnologiesanddecisionsupporttasksApplication-specificDSSvs.DSSgeneratorsWeb-enableddecisionsupportWebasmediaDSSResources、TheOLAPReport、DataWarehousingOnline(Decisionsupportportals)TeradataUniversityNetwork(teachingandlearningresourcerelatedtodatawarehousing)IBMOSSCOIN(similarportals)WebascomputerDigitalproductdemonstrations(QuickTimemoviesorShockwaveanimation)Previewingadecisionsupportproductusingonlineinteractive(Lumina、TreeAge、HDS)On-line,Web-basedDecisionSupportSystems(OptA、GrazingSystems)Web-enableddecisionsupportRecentresearchinWeb-baseddecisionsupportArchitecturesandtechnologiesGreggetal.developedaDSSmetadatamodelfordistributingdecisionsupportsystemsontheWebBharatiandChaudhuryconductedanempiricalstudytoinvestigatecustomers’satisfactionwithaWeb-baseddecisionsupportsystem(systemquality,informationquality,andinformationpresentation)Iyeretal.studiedmodelmanagementfordecisionsupportinacomputingenvironmentwhereenterprisedataandmodelsaredistributed(VBE)Gu¨posedStructuredServiceModelsthatuseavariantofstructuredmodelingZhangandGoddardappliedSoftwareArchitecturestothedesignofWeb-basedDSS(3CoFramework->NADSS)MitraandValenteprovidedanoverviewofWeb-basedoptimizationformodel-drivendecisionsupport(ASPande-Services)RecentresearchinWeb-baseddecisionsupportArchitecturesandtechnologiesResearchindicatesWebusersneeddetailedinformationaboutDSStoorganizeandunderstandtheavailablecontentSystemsshouldbedesignedtoincludeconstructsandartifactsthatsupportdeliveryofhigh-qualityinformationNewapproachesformodelmanagementareneededthatfacilitatestorage,search,retrieval,matching,andcompositionfromalibraryofdecisionmodelsRecentresearchinWeb-baseddecisionsupportApplicationsandimplementationsKohlietal.reportedacasestudyofaWeb-basedDSSforhospitalmanagementcalledPhysicianProfilingSystem(PPS)NgaiandWatdevelopedandimplementedaWeb-basedDSSthatusedamodelbasedonfuzzysettheorytoperformriskanalysisfore-commercedevelopmentDongetal.developedaWeb-basedDSSframeworkforportfolioselection(OLAP&PVM->WPSS)Sundarrajidentifiedkeyissuesinmanagingservicecontractsanddevelopedaprototypethatcansupportamanager’splanningprocessRayreportedacasestudythatdemonstratestheimplementationofWeb-baseddecisionsupporttechnologies(DelDOT)Liouetal.discussedthedevelopmentandimplementationofaWeb-basedGroupDSS,Team-Spirit(GDSS’s)Delenetal.developedaWeb-basedDSS,calledMovieForecastGuru,tohelpdecisionmakersinthemovieindustryOthers,Barton(SDM)、Walton(9/11)ConclusionsWebtechnologiesprovidePlatform-independentRemoteanddistributedcomputationTheexchangeofcomplexmultimediainformationSystemmaintenanceissimplifiedandcentralizedlettingendusersfocusonproblemanalysisanddecisionmakingChallengesTechnologicalchallengesEconomicchallengesSocialandbehavioralchallenges17ConclusionsWebTechnologicalchallengesarchitecturalmodelrandomjumpsinhyperspacelimitations–cookies,embeddingmodelsordatawithin

aWebpage,usingJavaappletlimitationsoftheWebbrowserHTTP,round-tripnetworkdelays,“pull”natureFurther