资源描述：
《2019年信息检索的基本方法课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、第二章信息检索的基本方法Outline布尔逻辑检索邻近检索短语检索截词检索字段限制检索区分大小写检索其它方法1布尔逻辑检索(BooleanLogic)逻辑与AND(*)逻辑非NOT,ANDNOT(-)排除无关结果逻辑或OR(+)(l)并行搜索管道搜索2邻近检索（ProximitySearch)WITH（W）Wuhan（W）universityWuhanUniversity,Wuhan-University，或Wuhan,University(nW)Wuhan（1W）universityWuhanMed
2、icalUniversity,WuhanAgriculturalUniversity,WuhanTechnologyUniversity……NEAR（N）Wuhan（N）universityWuhanUniversity,Wuhan-University，或Wuhan,UniversityUniversity,Wuhan;University-Wuhan;UniversityWuhan(nN)Wuhan（1N）universityWuhan(1N)university—还可检出universityof
3、wuhan,universityinwuhan……3短语检索（PhraseSearch,ExactSearch）“People’sRepublicofChina”“TheWorldIntellectualPropertyOrganization”“GeorgeW.Washington”GeorgeW.BushspokeatWashingtonD.C.abouthumanrights“WashingtonD.C.”“InformationRetrievalSystem”“YesterdayOnceMor
4、e”“SlumdogMillionaire”4截词检索(Truncation/Wildcat)有时被称为通配符前截词*ology→geology,sociology,psychology,archaeology,biology……中间截词wom?n→woman,women后截词（词尾截词）：有限截词computer??→computer,computersstud???→study,studies,studio,studied……无限截断econom*→economy,economic,economi
5、cs,economical,economist,economize…...5字段限制检索（FieldLimiting)Title(ti):WuhanUniversityurl:govPy>=2009La=englishLink:whitehouse.govadmissionANDsite:harvard.eduAU=WangliAND(CS=wuhanUniv.)6区分大小写检索(Case-sensitive）china--china,China,CHINAChina—ChinaWindows,win
6、dowswindowsANDdesign7模糊检索（FuzzySearch）概念检索相关检索检索→检索，搜索，查找，寻求…….8自然语言检索(NaturalLanguage)智能检索CouldyoupleasegivemesomeinformationonEnglishliterature?9多种检索方法的综合运用课后思考题查找2009年发表的题名中含有信息检索系统评价的英文论文TheEndAnyQuestions?
