简介:Whenqueryingonalarge-scaleknowledgebase,amajortechniqueofim-provingperformanceistopreloadknowledgetominimizethenumberofroundtripstotheknowledgebase.Inthispaper,anontology-basedsemanticcacheisproposedforanagentandontology-orientedknowledgebase(AOKB).InAOKB,anontologyisthecollectionofre-lationshipsbetweenagroupofknowledgeunits(agentsand/orothersub-ontologies).WhenloadingsomeagentA,itsrelationshipswithotherknowledgeunitsareexamined,andthosewhohaveatightsemantictiewithAwillbepreloadedatthesametime,includingagentsandsub-ontologiesinthesameontologywhereAis.Thepreloadedagentsandontologiesaresavedatasemanticcachelocatedinthememory.Testresultsshowthatupto50%reductioninrunningtimeisachieved.
简介:ThispaperdiscribesadatarepresentationforWordNet2.1basedonWebOntologyLanguage(OWL).ThemaincomponentsofWordNetdatabasearetransformedasclassesinOWL,andtherelationsbetweensynsetsorlexcialwordsaretransformedasOWLproperties.OurconversionisbasedonthedatafileofWordNetinsteadofthePrologdatabase.ThisworkcanbeusedtoenrichtheworkinprogressofstandardconversionofWordNettotheRDF/OWLrepresentationatW3C.
简介:Theconstructionofoceanographicontologiesisfundamentaltothe'digitalocean'.Therefore,onthebasisofintroductionofnewconceptofoceanographicontology,anoceanographicontology-basedspatialknowledgequery(OOBSKQ)methodwasproposedanddeveloped.Becausethemethodusesanaturallanguagetodescribequeryconditionsandthequeryresultishighlyintegratedknowledge,itcanprovideuserswithdirectanswerswhilehidingthecomplicatedcomputationandreasoningprocesses,andachievesintelligent,automaticoceanographicspatialinformationqueryonthelevelofknowledgeandsemantics.Acasestudyofresourceandenvironmentalapplicationinbayhasshowntheimplementationprocessofthemethodanditsfeasibilityandusefulness.
简介:Thispaperpropos-nologyintermsofthecharactersofagriculturaldecisionsupport,anddesignsamodelofDSSaboutproductionandsalesofagriculturalproducts.Themodeladoptsdecentralized+centralizeddistributednetworktopology.Inthedistributednetwork,eachnodeisaDSS.EveryDSSismadeupofmultipleagents,whichcanenhancetheinteractivityandintel-lectualityamongDSS.Inthemulti-agentsystem,weembedontologyintheagentsystem,whichhasthefollowingadvantages:enhancingthecoordinationandcommunicationbetweenagents,andstrengtheningthesemanticsofinformationandimprovingknowledgeshareandreuse.
简介:"不可译性"在概念词的翻译中尤为突出,其原因在于概念总是与其他概念相连,概念与整个概念体系、甚或整个思想体系相连。"Ontology"是西方哲学中一个关键的概念词,其实质是研究being的一门学问,其产生是缘于being在西方语言使用中所独具的"普遍性"。本文在对"Ontology"进行词典学考察基础上,从决定其意义的关键词"being"在西方哲学中和在日常语言中的使用入手,并结合"Ontology"产生的理论背景以及中西方语言和思想的巨大差异,对其"不可译性"进行了全面辨析。有鉴于此,对于类似的概念词,要消解其"不可译性",从本质上看,只能在目的语语境中思考如何对其进行"再命名"。
简介:Currently,schemaintegrationframeworksuseapproacheslikerule-based,machinelearning,etc.Thispaperpresentsanontology-basedwrapper-mediatorframeworkthatusesboththerule-basedandmachinelearningstrategiesatthesametime.Theproposedframeworkusesglobalandlocalontologiesforresolvingsyntacticandsemanticheterogeneity,andXMLforinteroperability.Theconceptsinthecandidateschemasaremergedonthebasisofthesimilaritycoefficient,whichiscalculatedusingthedefinedrulesandthepriormappingsstoredinthecase-base.
简介:Knowledgeabouthumanbeingsisanintegralpartofanyintelligentagentofconsiderablesignificance.Delimiting,modelingandacquiringsuchknowledgearethecentraltopicsofthispaper.Becauseofthetremendouscomplexityinknowledgeofhumanbeings,weintroduceatop-levelontologyofhumanbeingsfromtheperspectivesofpsychology,sociology,physiologyandpathology.Thisontologyisnotonlyanexplicitconceptualizationofhumanbeings,butalsoanefficientwayofacquiringandorganizingrelevantknowledge.
简介:APIsofCADsystemcouldbeencapsulatedtoconstructwebservicessoastoprovidestandardaccessinterfacesforweb-basedcooperativedesign.However,lackofsemanticsupportingmakeintegrationofheterogeneousmodellingsystemlimitedtooperationallevel.Onthepurposeofcarryingoutcooperativedesigninaflexiblecloudenvironment,anintelligentandeffectivesupportmechanismisneededformassandcomplexinteractionincooperativework.Therefore,Ontology-basedGeometryModelingServicesEnvironment(OGMSE)isprovidedtorealizeaknowledge-levelgeometrymodelingsoastosupportedsemantic3Dmodelmanagementandintelligentoperationsupport.First,CADAPIsareencapsulatedintowebserviceforwebinvocation.Then,ontologycontainedstructuralsemanticandoperationalsemanticisbuiltformanagementofmodelsandmodelingprocess.Lastly,conception-drivenmodelingmechanismisbuilttoinvocateserviceaccordingtointeractionrequirement,thustorealizeconception-levelcooperativedesign.Basedonanopengeometryengine,aprototypesystemhasbeendeveloped.Theresultshowsthattheapproachprovidesareferencedirectionforlarge-scaleapplicationonthenetwork.