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ID:36442335
大小:4.49 MB
页数:171页
时间:2019-05-10
《异构资源中基于本体的信息互操作性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、东华大学博士学位论文异构资源中基于本体的信息互操作性研究姓名:俞时申请学位级别:博士专业:控制理论与工程指导教师:陈家训20030401关键字本体,信息互操作,语义,知识表示与工程,信息异构Ontology—BasedInformationInteroperabilityinHeterogeneousResourcesInformationinteroperabilityisaJlextensivetopicwhichattractsabroadrangeoftheories,methodologiesandt
2、echniquesIthadbeinganactiveresearchareafornearlytwentyyearsandrecentinterestsareconcernedonsemanticinteroperabilityamongindependentresources.Becauseoffeaturesofheterogeneous,autonomousanddistributedofindependemwebsystems,theirinteroperationisstilldifficult.O
3、urapproachesfocusonaparticularproblem,conceptualheterogeneity,whichOCCURSindiversifiedrepresentationsaboutthesamerealwordobject.Wefoundedourapproaches013ontology,alogicaltheoryaccountfor"theintensionmeaningofaformalvocabularyorlanguage,andassumethatmultipleo
4、ntologiescouldhelpusfindmoreagreementsamongdifferentconceptualizations.First,weestablishadescribingmodelforontologicalengineeringofinformationresourcesThismodelcombinesrepresentationofobjects—level,classes-levelandcontexts—levelinanintegratedframeworkinorder
5、toincreasetheagreedareaamongmultipleconceptualizations.Second,weproposeanActiveMediatorModeforontologybasedresourcestoachieveinteroperabilityThekeycomponentofthismodeisthesemanticresolutionabilitywhichsupportedbyintelligentinformationprocessingmethodsandalgo
6、rithms.ThiseffcctofmoderequirestheCO·effortofinformationprovideLmediatorandinformationrequester,SOitisalsocalledcloselycoupledmode.Third,weproposeaLooselyCoupledmodeforwebbasedinformationinteroperation.ThismodeisfeaturedbythecomponentsofXMLSchema,awebdocumen
7、tformofontologyandwrappeLaXMLparserpoweredextractionprogram.Thefinalproductionofthismodeisanextractedandresolvedschema,whichisbeconsideredasamachineunderstandableSchemaforheterogeneousXMLdata.Fourth,wepresentasuppositionofcommonvocabularyretrievalalgorithmba
8、sedonrefinedontology.Thissuppositionaimsforautomaticgenerationofcommonvocabularies,especiallythesauruses,amongstructuredsemanticspaces.Weconsiderontologicaldescriptionsassemamicspacesandtrytofin
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