Web服务组合关键技术研究

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1、东南大学博士学位论文Web服务组合关键技术研究姓名：冯名正申请学位级别：博士专业：计算机应用技术指导教师：顾冠群20060301东南人学博士学位论文关键词：Web服务，Web服务组合，服务质量，运筹学，语义学一Ⅱ一Abs仃actWiththemushroomofthenetworktechnologyanditsapplication，user’srequirementswereen—hancod．Thus，variousserviceswhichWereabletosarisfya11requirementseffectivelywer

2、eexpected．ThecenterofgravityfortheNetworkresearchhasbeenextendedtotheappficationlayerinNetwork．Thenextgenerationnetworkinthefuturewouldbeauser-oriantod．QoS．aSsurednetworkwhichfocusesonservice．Itwouldprovidealotofvariousservicesandhastheabilitytocustomizeandmanagetheseserv

3、ices．Inordertoenhancecompetitivepreponderanceandadaptability,enterprisesshouldenhancetheiragilityandflexibilityinresponsetocustomer'sandmarket’sneeds，Thebusinesssoftwaresystemshouldhavetheabilitytocomposecongruousandavailablenewser-vices，basedonthenewrequirements证tbeBeWIu

4、teraeteuvixoiAmenl，utilizingthoselegacyres04Yce$，Thishasbecomeachallengingproblemneedingtoberesolvedimminently．Theproblemistheresultofdemand．driven．WebServicesCompositiontwsc)whichisgrowingrapidlycouldbeallexcellentapproachtoachieveallthesegoals．ItsupportsbusinessagiHty,f

5、lexibihty,andavailability—themainfeaturesinE-Businesssoftware．Inthenewservice—orientedapplicationenvironment,undertheboostofrequirements—driven，WSCwithQoS—assuredhasminedintoaprimaryresearchfieldinWebServices．Inthepastfewyears，manyissueshavebeenaddressed．I【leachnodeofWSCp

6、lan(process／flow)；thereexistlotsofWebServiceswiththesamefunction．HowtoselectarightoneexactlyinQoSview?RelatedresearchhadsomedisadvantagesinthisproblemnamedServiceSelection．Ontheotherhands，withthegl【obalWebServicesmarket，thereexistanumberofWSCplanssarisfyingfunctionsrequir

7、e-ments．ThoseplansprovidedifferentQoS．HowtovaluateoroptimizetheminQoSview?Heretofore，therehavenotsomeworksonplanvaluation／optimization．WeaknessintheretwoaspectshamperthewidedeploymentofWSC．Howtoresolvetheseissuesideallyisallopenproblem．Firstofall，thispaperdefinesthebasicn

8、otion，summarizestheinitialresearchandtheactualityinrelateddomains．Secondly,acommonabstractframew