预览加载中，请您耐心等待几秒...

一种基于知识的信息检索方法.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

一种基于知识的信息检索方法 Title:AKnowledge-basedInformationRetrievalMethod Abstract: Informationretrievalisacriticaltaskinthefieldofcomputerscience.Withthegrowingamountofdigitalinformationavailable,itbecomesincreasinglychallengingtoretrieverelevantandaccurateinformationefficiently.Inthispaper,weproposeaknowledge-basedinformationretrievalmethodthatutilizesknowledgegraphstoenhancethesearchprocess.Wediscussthecomponentsofthismethod,includingknowledgeacquisition,knowledgerepresentation,andknowledgeutilization.Wealsopresentacasestudytodemonstratetheeffectivenessofourapproach.Theresultsindicatethattheproposedmethodleadstoimprovedaccuracyandefficiencyininformationretrievaltasks. 1.Introduction Informationretrieval(IR)istheprocessofextractingrelevantinformationfromalargeandunstructuredcollectionofdata.TraditionalIRmethodsprimarilyrelyonkeywordmatchingtechniques,whichoftensufferfromlimitationssuchasambiguityandlackofsemanticunderstanding.Inrecentyears,advancementsinknowledgerepresentationandmachinelearninghavepavedthewayfornewapproachesthatleverageknowledgetoimprovetheretrievalprocess.Thispaperpresentsaknowledge-basedinformationretrievalmethodthatincorporatesknowledgegraphstoenhancesearcheffectiveness. 2.KnowledgeAcquisition Knowledgeacquisitionisacrucialstepinbuildingaknowledge-basedinformationretrievalsystem.Itinvolvesextractingknowledgefromvarioussources,suchastextbooks,scientificarticles,andwebpages.NaturalLanguageProcessing(NLP)techniques,suchasnamedentityrecognitionandrelationextraction,canbeappliedtoautomaticallyextractstructuredknowledgefromunstructuredtext.Additionally,existingknowledgebases,suchasWikipediaordomain-specificontologies,canbeutilizedtoenrichtheknowledgegraph. 3.KnowledgeRepresentation Oncetheknowledgeisacquired,itneedstoberepresentedinastructuredformthatcanbeeasilyprocessedbytheretrievalsystem.Knowledgegraphs,apowerfulrepresentationmodel,provideawaytorepresentknowledgeinagraphstructure,whereentitiesarerepresentedasnodesandrelationshipsbetweenentitiesarerepresented