Unsupervised Sentence Enhancement for Automatic Summarization

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1、UnsupervisedSentenceEnhancementforAutomaticSummarizationJackieChiKitCheungGeraldPennUniversityofTorontoUniversityofToronto10King’sCollegeRd.,Room330210King’sCollegeRd.,Room3302Toronto,ON,CanadaM5S3G4Toronto,ON,CanadaM5S3G4jcheung@cs.toronto.edugpenn@cs.toronto.eduAbstractInput:BilMarFoodsCo.,ame

2、atprocessorownedbySaraLee,announcedarecallofWepresentsentenceenhancementasacertainlotsofhotdogsandpackagedmeat.noveltechniquefortext-to-textgenera-Input:TheoutbreakledtotherecallonTues-tioninabstractivesummarization.Com-dayof15millionpoundsofhotdogsandcoldparedtoextractionorpreviousapproachescut

3、sproducedattheBilMarFoodsplant.tosentencefusion,sentenceenhancementOutput:TheoutbreakledtotherecallonTues-increasestherangeofpossiblesummarydayoflotsofhotdogsandpackagedmeatssentencesbyallowingthecombinationofproducedattheBilMarFoodsplant.dependencysubtreesfromanysentenceFigure1:Anexampleoffusin

4、gtwoinputsen-fromthesourcetext.Ourexperimentsin-tencesintoanoutputsentence.Thesectionsofthedicatethatourapproachyieldssummaryinputsentencesthatareretainedintheoutputaresentencesthatarecompetitivewithasen-showninbold.tencefusionbaselineintermsofcon-tentquality,butbetterintermsofgram-maticality,an

5、dthatthebenefitofsen-tenceenhancementreliescruciallyonaneventcoreferenceresolutionalgorithmus-manticanalysisbeyond,say,adependencyparseringdistributionalsemantics.Wealsoandlexicalsemanticresources.considerhowtext-to-textgenerationap-Theoveralltrajectorypursuedinthefieldcanproachestosummarizationca

6、nbeex-becharacterizedasamoveawayfromlocalcon-tendedbeyondthesourcetextbyexam-textsrelyingheavilyontheoriginalsourcetextto-ininghowhumansummarywritersincor-wardsmoreglobalcontextsinvolvingreformula-poratesource-text-externalelementsintotionofthetext.Whereassentenceextractionandtheirsummarysentenc

7、es.sentencecompression(KnightandMarcu,2000,1Introductionforexample)involvetakingonesentenceandper-hapsremovingpartsofit,traditionalsentencefu-Sentencefusionisthetechniqueofmergingsev-sioninvolvesreformulatingasmallnumberofre