国内数字图书馆集成检索系统发展对策分析word格式论文.docxVIP

AbstractWiththedevelopmentofstoragetechnologyandnetworktechnology,especially thedevelopmentofthe Internet,networkhasbecomethemainservicemodeoflibrary toquerydatabase.Thenumberandvarietyofdatabasewhichlibrarypurchasedand self-builtwasincreasedand rich.However,eachdatabasehasits owndifferencefrom othersindatastructures,retrievalmechanism,retrievaloperation,thelibrarysystem’s softwareandhardwareandoverlappinginresources,madetheretrievalofusers overburdened.Howtobaseontheperspectiveofuserstoestablishone-stopretrieval todealwithmultipletypesofdatabaseresources,becomeoneofthemainproblems ofthelibrary.Cross-database retrievalsystemis thekeytosolvethis problem.Integrated retrieval is an important part of digital library, Also known asrossdatabaseretrieval,federatedsearch,databaseretrieval,one-stopretrieval, distributedretrieval,etc.itistheretrievalsystemthatregardheterogeneousdata sourcesasobject.Themainpurposeofthiskindofsystemwhichprovideunified retrievalinterfacetousersisquerydifferentdatabaseanddatasourceinaunified retrievalenvironment.Transformtheusersretrievalrequestintodifferentdata sources’retrievalexpressions;concurrentlyretrievemultipledistributed heterogeneousdatasourcesonthelocalandwideareanetwork,andthen,integrated theretrievalresults,presentedtotheuserinauniformformatafterduplicate removalandorder.Inrecentyears,thelibraryinformationresourcesconstructionhasbeengreatly development.Ontheonehand,buyalargeamountofdigitalresources,ontheother hand,setupmanycharacteristicdatabases.However,inthiscase,alotofdatabases thatstructureusedwerenotuniform,therewerenouniversalstandardsand specifications,unableprovideauniformdatainterfaceforlargeamountsofdata.It madedatacannotbeSharedtheretrieval,broughtinconvenienttousers.So,thestudy ofthelibraryintegrationretrieval’scurrentsituationisveryurgent.Thispaper explainedtheintegratedretrievalsystemfromfouraspects:Firstly,discussedthe developmentofintegratedretrievalsystem,includingtheorigin,overseasresearch anddomesticresearchofinteg