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1、ClarifyingIntentionsinDialogue:ACorpusStudy∗JulianJ.SchloderandRaquelFern¨andez´InstituteforLogic,LanguageandComputationUniversityofAmsterdamjulian.schloeder@gmail.com,raquel.fernandez@uva.nlAbstractAspartofourongoingworkongroundingindialogue,wepresentacorpus-basedinvestig
2、ationofintention-levelclarificationrequests.Weproposetorefineexistingtheoriesofgroundingbycon-sideringtwodistincttypesofintention-relatedconversationalproblems:intentionrecognitionandintentionadoption.Thisdistinctionisbacked-upbyanannotationexperimentconductedonacorpusassemb
3、ledwithanovelmethodforautomaticallyretrievingpotentialrequestsforclarification.1IntroductionDialogueiscommonlymodelledasajointactivitywheretheinterlocutorsarenotmerelymakingin-dividualmoves,butactivelycollaborate.Acentralcoordinationdeviceisthecommongroundofthedialogueparti
4、cipants,theinformationtheymutuallytakeforgranted(Stalnaker,1978).Thiscommongroundischangedandexpandedoverthecourseofaconversationinaprocesscalledgrounding(Clark,1996).Weareinterestedinthemechanismsusedtoestablishagreement,i.e.,intheconversationalmeanstoestablishabeliefasjo
5、int.Toinvestigatethisissue,inthispaperweexaminecaseswheregrounding(partially)fails,asindicatedbythepresenceofclarificationsrequests(CRs).Incontrasttopreviouswork(i.a.,Gabsdil,2003;Purver,2004;Rodr´ıguezandSchlangen,2004),whichhasmostlyfocusedonCRstriggeredbyacousticandseman
6、ticunderstandingproblems,weareparticularlyconcernedwithproblemsrelatedtointentionrecognition(goingbeyondsemanticinterpretation)andintentionadoption(i.e.,mutualagreement).Thefollowingexamples,fromtheAMIMeetingCorpus(Carletta,2007),arecasesinpoint:(1)A:Ithinkthat’sall.(2)A:J
7、ustuhdothatquickly.(3)A:I’dsaytwo.B:Meeting’sover?B:Howdoyoudoit?B:Why?Intheseexamples,itcannotbesaidthatBhasfullygroundedA’sproposal,butalsonotthatBrejectsA’sutterance.Rather,Basksaquestionthatisconducivetothegroundingprocess.In(1),BhasapparentlyunderstoodA’sutterance,but
8、isunsureastowhetherA’sintentionwastoconcludethesession.WethereforeconsiderCRslikeB’squest
