语义web服务发现中匹配策略研究与实现

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1、语义Web服务发现中匹配策略研究与实现国防科学技术大学博士学位论文语义Web服务发现中匹配策略的研究与实现姓名：魏登萍申请学位级别:博士专业:计算机科学与技术指导教师:王挺2011-03Service-OrientedComputing,SOCWebWebSOCWebWebWebSOCSOCSOCWebWebWebWebSOCWebWebWebWebWebWebWebWeblWebWebWebiXQueryXQueryWebWebWebWeb2SAWSDLWebWebWebSAWSDLSAWSDLWSDL?WebSAWSDL9■■1SAWSDLWeb3WebW

2、ebXMLSchemaWebSAWSDLSAWSDLSAWSDLWeb4WebWebWebWebWebWebWeb5WebWebWebWebWebWebWebWebH-iMatchcrWebWebiiWebiiiABSTRACTAsanewcomputingparadigm,Service-OrientedComputingSOChasbecomeahottopicinthe?eldofsoftware.WebservicehasbeenbecomingthemainstreamimplementationofSOC,withthedevelopmentofW

3、ebservicestandardandtechnique.ThetaskofWebservicediscoveryistolocateWebservicesinrepositorythatsatisfyuser"srequirements,accordingtothefunctionalandnon-functionaldescrip-tions.AsaprimarytaskinSOC,Webservicediscoveryhasbecomeachallengingproblemwhichwillensurethesuccessfulapplication

4、ofSOCinindustry.ThestandardWebservicedescriptioncannotexactlydescribethefunctionalandnon-functionalsemanticsofWebservices,duetothelackofsemanticannota-tions.Hence,thesemanticambiguityofWebservicedescriptionbringsdi?cultiestotheautomationofservicediscovery.Fortunatcly,SenianticWebser

5、vicetechnologyprovidesawaytodescribeWebservicewithformalandexplicitsemanticsandafoundationforautomaticservicediscovery,compositionandinvocation.However,thecurrentmethodsofSemanticWebservicediscoverycannotsolvethediscoveryproblemsinmanypracticalapplicationsverywell,andthee?ectiveness

6、ofdiscoveryst订1haspicntyofroomforimprovement.ThisthesisfocusesonWebservicediscoverymethods,includingthequerymechanismforheterogeneousSemanticWebservicesandthee?ectivematchmakingalgorithmsthatmakeuseofthecharacteristicsofWebservicedescriptions.Thedetailsareasfollows.1Theresearchonq

7、uerymechanismforheterogeneousSemanticWebservicesAqueryframework,namediXQuery,isproposedtosupportthequeryonhet-crogcmcousScmanticWebservices.ThisframeworkextendsXQuerywithsimilarityjoinsforheterogeneousSemanticWebservicematchmaking.iXQueryalsode?nesauni?edabstractSemanticWebserviceon

8、tology,whichcanbema