基于個性化本體的語義搜索引擎技術的研究與設計.pdf

1、河北工業(yè)大學碩士學位論文基于個性化本體的語義搜索引擎技術的研究與設計姓名：陳鵬飛申請學位級別：碩士專業(yè)：計算機應用技術指導教師：劉恩海201011河北工業(yè)大學碩士學位論文iiiSTUDYINGDESIGNOFSEMANTICSEARCHENGINETECHNOLOGYBASEDONPERSONANLIZEDONTOLOGYABSTRACTWiththerapiddevelopmentofthewktheonlineinfmationis

2、increasingquickly.Themassofinfmationisnotonlybringingpeoplerichresourcesbutalsobringingpeoplegreatchallengeonhowtousetheinfmationeffectively.Thetraditionalsearchenginealleviatedthisproblemtosomeextent.Howeverbecauseitcan

3、notunderstthesemanticsoftheinfmationthequalityeffectivenessofsearchisfartosatisfy.Therecallratiotheprecisionratioaretobeimproved.Thesearchstrategyofsemanticsearchengineimprovesfromtraditionalkeywdleveluptosemanticlevelwi

4、thintelligentreasoning.Thisimprovestheperfmanceofsearch.Semanticsearchtechnologyachievesthesemanticrepresentationofinfmationknowledgereasoningsemanticrelevancecalculation.Thistechnologycansolvethecurrentdifficultiesofthe

5、searchtechniqueseffectively.Thispaperintroducesthewkingprincipleofsearchengineclassificationevaluationcriteriaatfirst.Thenthepaperresearchesthecurrentdevelopmentofthesearchengineindetail.afterthatitintroducesrelevantterm

6、sresearchesthecrucialtechnologytheprinciplethedevelopmentthecurrentsituationofapplicationwhichrelatestosemanticsearchengines.Traditionalsearchenginecannotunderstthesemantics.Sothispaperpresentsasemanticsearchenginebasedo

7、npersonalizedontologycombiningwiththetechnologyadvantagesoftraditionalsearchenginedesignsasearchengineSenduwhichcanincreasethefunctionofsemanticundersting.SenduengineusestheHeritrixascrawlerinthewktoretrieveinfmationreso

8、urcesuseLuceneframewktobuildtraditionalsearchenginesasbasisindertoincreasethesemanticunderstingabilityusingontologyedittoolprotgtocreatedomainontology.Senduenginecanconverttheusersquerykeywdsintorecognizablesemanticterms

9、byusingontology.SenduusesRDFAPIthejenafreasoninggetsvocabularywhichhassemanticrelationwithusers’searchkeywdssuchassynonymsupperwdetc.Theseextendedtermswillimprovetherecallratioofsearchengine.Fexamplesearchingf“computer“t

10、hiswdjenawilldeduceitssynonymsof“PC”accdingtoontologyknowledgebase.Sothatfinalquerywillbeexpedrelevantwebpagesoftheterms“computer““PC“.Ontologywillganizetheterminaflexibleway.Senduenginealsoproposesthreemesemanticsearche