NDLI: Automatic text decomposition using text segments and text themes.

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Automatic text decomposition using text segments and text themes.

Content Provider	CiteSeerX
Abstract	levelevidenceabouttheuseofwordsinlocalcontextstrievaltaskandimprovingretrievaleectiveness.Passagebyimportanttextexcerpts,therebysimplifyingtheretrieval,passage-retrievaltechniquesarebecomingincreasinglypopular.LargertextscanthenbereplacedWiththewidespreaduseoffull-textinformationre- textpassages,astudyoftextpassagesisalsoimportant traversal,andtextsummarization. toformulatespecicationsforinformationretrieval,text themesisthenusedtocharacterizetextstructure,and exhibitstheresultsofsimilaritymeasurementsbetween knowledgeoftexttypeandtextstructureinturnaects pairsoftexts,ortextexcerpts.Typically,eachtext,or manytexthandlingoperations,includingretrieval,text textexcerptisrepresentedbyavectorofweightedterms readingandtraversal,andtextsummarization. ments,themes,informationretrieval,passageretrieval,oftheformDi=(di1;di2;:::;:::;dit)wheredikrepre- Thestructureofindividualtexts,orsetsofrelatedtexts, canbestudiedbyusingatextrelationshipmapthat Withtheadventoffull-textdocumentprocessing,the textsummarization. sentsanimportanceweightfortermTkattachedtodoctentrepresentationpurposesmaybewordsorphrases interestinmanipulatingtextpassagesratherthanonly wordusageinlocaltextenvironmentsisoftenhelpfulin full-textitemshascontinuedtogrow.Retrievinglarge improvingretrievaleectiveness,becausethemeaningof textsinanswertouserqueriestendstobeinecient thetermsintheindividualdocumentsandthedocument texts.Inaddition,passage-levelevidenceaccountingfor ambiguoustermsbecomesclearwhenthelocalcontext becausetheuseristhenforcedtocopewithlargemasses collectionasawhole.[7] umentDi.Thetermsattachedtodocumentsforconderivedfromthedocumenttextsbyanautomaticin- bytakingintoaccounttheoccurrencecharacteristicsof dexingprocedure,andthetermweightsarecomputed oftext,andineectivebecauserelevanttextpassages oftenprovidebetteranswersthancompletedocument
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Subject Keyword	Astudyoftextpassagesisalsoimportant Traversal Text Theme Becausethemeaningof Text Wheredikrepre Thestructureofindividualtexts Retrievinglarge Improvingretrievaleectiveness
Content Type	Text

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