文档介绍:该【计算机检索基础 】是由【小落意】上传分享,文档一共【29】页,该文档可以免费在线阅读,需要了解更多关于【计算机检索基础 】的内容,可以使用淘豆网的站内搜索功能,选择自己适合的文档,以下文字是截取该文章内的部分文字,如需要获得完整电子版,请下载此文档到您的设备,方便您编辑和打印。汇报人:时间:2020本模板有完整的思路及框架,更贴近实用计算机检索基础信息检索词汇(terms)Informationretrieval(IR)ess(obtain)Informationsearch(lookfor)Informationsearching(lookfor)Informationseeking(focusonusers,active)●手工操作(manual)●puterized)●worked)●智能化(intelligentized)●认知化(cognized)What’ssearchinglike?“Findinganeedleinahaystack”(onlinesearch)脱机检索(offlinesearch)光盘检索(CDsearch)网络检索(Interne/Websearch)全球数字图书馆系统(digitalglobalsystem)(onlinesearch)puters(hosts).:interaction,realtimeremote,WAN微机5OnlinedatabasesFeatures ¨Atest-bedforearlyIRexperiments&development ¨TheshowcaseofIRtechnology(,relevanceretrieval),theWebbecamepopular ¨AlaboratoryforacquiringinformationretrievalskillsIRcapability ¨Coversvirtuallyeverytypeofdatabasestructures ¨Implementalldifferentretrievalmodelsandtechniques-----Hahn6OPACsFeatures ¨AnextensionofMARCrecords ¨Aproductoflibraryautomation ¨Abibliographicdatabaseoflibraryresourcesforaninstitutionatvariouslevels,,local,regional,nationalIRcapability ¨Easytobrowse(resembleshelfstructure) ¨Basedonwell-establishedhierarchicaldatabasestructure¨(CDsearch)光盘单机检索8检索终端局域网服务器光驱LAN微机towerjukebox光盘联机检索(CDonline))(file)数据库组织的基本形式记录(record)文档的构成单位(对应一个书目条目)15