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基于本体的上下文感知计算关键技术研究 Abstract Withtherapiddevelopmentofmoderninformationtechnology,theconceptofcontexthasgraduallybecomethefocusofattention,andthecontext-awarecomputingtechnologyhasbecomeanimportantwaytoimprovetheintelligenceandflexibilityofcomputersystems.Inrecentyears,theontology-basedcontext-awarecomputingtechnologyhasbeenwidelyusedinvariousfieldsduetoitsadvantagesofrichsemanticsandflexiblestructure,andhasbecomeahotresearchtopicinthefieldofinformationtechnology.Thispaperanalyzesthekeytechnologiesofontology-basedcontext-awarecomputing,includingontologymodeling,contextsensing,contextreasoning,andcontextmanagement,anddiscussestheirresearchstatusandfuturedevelopmenttrends. Keywords:ontology,context-awarecomputing,contextsensing,contextreasoning,contextmanagement Introduction Astheamountofinformationcontinuestogrow,traditionalcomputingmethodsarefacingchallengessuchasinformationoverload,difficultyininformationmanagement,andpooruserexperience.Context-awarecomputingtechnology,whichcanfullyconsidertheuser'sneedsandthesurroundingenvironment,hasthepotentialtosolvetheseproblemsandhasbecomeanimportantresearchdirectioninthefieldofcomputerscience.Context-awarecomputingtechnologycanautomaticallycollectandanalyzecontextualinformationfromvarioussources,makecorrespondingdecisionsbasedoncontext,andprovideuserswithpersonalized,situationalandintelligentservicesthatmeettheirneeds.Atpresent,manycontext-awarecomputingtechnologieshavebeenproposed,amongwhichontology-basedcontext-awarecomputingtechnologyhasattractedwidespreadattention.Inthispaper,wewillanalyzethekeytechnologiesofontology-basedcontext-awarecomputing,includingontologymodeling,contextsensing,contextreasoning,andcontextmanagement,anddiscussthecurrentresearchstatusandfuturedevelopmenttrends. OntologyModeling Ontologyisaformalrepresentationmethodfordescribingknowledgeaboutaspecificdomain,whichcanprovideasharedconceptualizationofadomainandenablemachinereasoningandunderstanding.Inthecontext-awarecomputingsystem,ontologycanbeusedtorep