網(wǎng)格環(huán)境下基于語(yǔ)義的信息檢索研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文網(wǎng)格環(huán)境下基于語(yǔ)義的信息檢索研究姓名：李潔申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：鐘珞20090501AbstractThedevelopmentoftechnologyhaschangededucationfromitstraditionalwaytonowadayselectronicwaytosatisfypeople’SdifferentneedsSincetherearevariouseduca

2、tionresources，elearningsystemshaveproposedmetadataandontologytoorganizetheeducationresources，andsetupalargenumberofmetadatastandardssuchasSCORM，DublinCore，IEEELOM，ARIADNE，IMSandSOon，andformmetadatahierarchicalcategorizat

3、ionarchitectureingridWiththedevelopmentofnetworkandtheconstantpopularityofeLearningthereistheneedofe—Learninginfrastructuretoprovidebetter，makingbettereLearningservicesGridisadistributedschemesolvingvariousproblemstoallo

4、wresourcesharing，virtualorganization，andgoodinteroperation，whilewebe—Learningonlyprovideslearnerswithinformation，insteadofprovidingrealexperience，suchasexperiment，interactionandSOonWiththecontinuousdevelopmentofgridtechn

5、ology，peoplegraduallyrealizedtheadvantagesofgridenvironmentIntheeLearningeducationalprocess，usingtheGridprovidesuserswithcollaborativelearningenvironment，theuseofheterogeneousresources，theuseofpowerfulcomputingcapacityan

6、dstoragecapacitytoimprovethequalityofservicesGride—Learningcanbemadetoachievenotonlythesharingofinformation，butalsotheeffectofsharingresourcesThemostcriticalissuesofeLearningGridenvironmentisinformationretrievalInadditio

7、ntogeneralinformationretrieval，sincethegridisageographicallydispersedfacilities，andasaresultofchangesinorganizationalchangesoccurredinthevirtualorganization，moreretrievalproblemsbringtothegride—LearningOntologyresearchIn

8、thispaper，semanticretrievalmethodsareappliedtoe—LearninggridenvironmentItismucheasierrealizeontologyreasoning，aswellasmoreaccurateresponstousers’retrievalrequestusingontologyWenoonlybuildtheontologyaboutlearningcontentbu