基于本体的农业科技信息用户建模系统设计与实现

3431,21,21,23,41,21(100081)2(100081)3(100081)4(100088),,,,TFIDFG358.1TP31DesignandRealizationofAgriculturalScientificInformationUserModelingSystemBasedonOntologyZhangYu1,2SuXiaolu1,2LiuShihong1,2LiJing3,4HuHaiyan1,21(InstituteofAgricultureInformation,ChineseAcademyofAgriculturalSciences,Beijing100081,China)2(KeyLaboratoryofDigitalAgriculturalEarly-warningTechnologyMinistryofAgricultureofthePeoplesRepublicofChina,Beijing100081,China)3(MobilePostdoctoralCenter,InstituteofAgricultureInformation,ChineseAcademyofAgriculturalSciences,Beijing100081,China)4(NationalLibraryofStandards,ChinaNationalInstituteofStandardization,Beijing100088,China)AbstractThispaperadoptsthemethodofbuildingusermodelinganddomainOntologyapproach,andextractstheuserinformationthroughstudyingandanalyzingtheusersearchhistory.ThentheusermodelingthatconsistsofuserOntologyanduserconceptvectorsisconstructed.Theexperimentshowsthatthisstudyimprovestheorderoftheuserretrievalresults.KeywordsUsermodelingOntologyTFIDF:2009-09-27:2009-10-273863(:2007AA10Z236)(:2006BAD10A05)1,,,XIANDAITUSHUQINGBAOJISHU35,;,,,,,[1],,22070,,2.11996LaSapienzaBrunoErrico,,,,[2]:LianaRazmerita[3];DominikHeckmannTimSchwartz[4];(EPFL)VincentSchickel-Zuber[5];CliadaCostaPereiraAndreaG.B.Tettamanzi,[6]2.22006,,,,[7],[8]ZhangHSongY,[9],[10][11],()[12]2.3,,[6]2006,:(1);(2)[10],,;(3),,,,,3CNKI(5011452),CNKI3.1,,,,,,,18520091136,,,,,,;,,,3.2,IP,,,,,,,;,,3.3,,,,,,,,,,,,,3.4,,,,,,,,TFIDF,3.5,,,,,,,3.611,,,,,,XIANDAITUSHUQINGBAOJISHU37,4:(1):,(2):,,(3):,,(4):,,4.1,,,TFIDFTF()IDF()TFIDFTFIDFA=(t1,n1;t2,n2;;tl,nl),ti(i=1,2,,l),ni(i=1,2,,l)tfi,j=ni,j6knk,j(1)(1)[13]jtiidfi=logMmi(2)(2)[13]iIDF,M,miti(mi0)TFIDF:j=tfi,jidfi=ni,j6knk,jlogMmi(3)(3)[14]jtiTFIDF,2,26,4234249436,16060,2936051,2936051,,(),(),3:3,45,,4TF,5IDFOntologyEntityId,4DocumentId,Count15,OntologyEntity2Frenquency15;5IDF,4.26,,18520091138CNKI,,,:,,IDF;,IDF6B=(t1,n1;t2,n2;;tl,nl),,,:sim(A,B)=cos=6nk=1k(A)k(B)(6nk=12k(A))(6nk=12k(B))(4)(4)[14],,,5CNKI,(((=a?)or(=d?)))and(((%)))and(((%))),:2008-03-18T9:16:03,222.128.5.60,CNKI,30,1:1CNKI1234567(AloeL.)89101112131415(CamelliajaponicaL.)161718192021222324(HippophaerhamnoidesL.ssp.sinensisRousi)2526272829330,1012,1021,1CNKI,212,XIANDAITUSHUQINGBAOJISHU39210.040845054702931520.035115969141864330.027717377478062940.027503927143388650.02717841827027260.026875963654646570.026330035498466380.026072256501738490.0256019314664273100.0254879214075483110.025291323359317120.0252815195077246130.0252126100551001140.025161005121906150.025110072245969916(HippophaerhamnoidesL.ssp.sinensisRousi)0.0249412271458127170.023403001353480218(CamelliajaponicaL.)0.0233043879150855190.0231277817180286200.0220063943062569210.0217676588140941220.0215064128025462230.0206847467619912240.0203597280187909250.020265882071999260.0198684871283963270.0191324781172521280.016903488039468129(AloeL.)303,,,,6,,,,,,,,:[1].[J].,1999,18(3):87-89.[2]BrunoErrico,LuigiaCarlucciAiello.IntelligentAgentsintheSitua2tionCalculus:AnApplicationtoUserModeling[J].LectureNotesinComputerScience,1996(1085):126-140.[3]RazmeritaL,AngehrnA,MaedcheA.Ontology-basedUserModelingforKnowledgeManagementSystems[J].IntegratedSeriesinInformationSystems,2007(14):635-664.[4]HeckmannD,SchwartzT,BrandhermB,etal.Gumo2TheGener2alUserModelOntology[J].LectureNotesinComputerScience,2005(3538):428-432.[5]VincentSchickel-Zuber,BoiFaltings.OvercomingIncompleteUs2erModelsinRecommendationSystemsviaanOntology[J].AdvancesinWebMiningandWebUsageAnalysis,2006(4198):39-57.[6]CliadaCostaPereira,AndreaGBTettamanzi.AnOntology-basedMethodforUserModelAcquisition[J].SoftComputinginOntologiesandSemanticWeb,2006(204):211-229.[7].[D].:,2008.[8].[D].:,2008.[9]ZhangH,SongY,SongHT.ConstructionofOntology-basedUs2erModelforWebPersonalization[C].In:Proceedingsofthe11thInternationalConferenceforUserModeling,Corfu,Greece.Berlin,Heidelberg:Springer-Verlag,2007:67-76.[10].[D].:,2007.[11].[D].:,2007.[12].[D].:,2006.[13].[EB/OL].(2006-06-27).[2009-05-10].[14],.TFIDF[J].,2008,31(2):298-302.(E-mail:[e-mail])185200911