Learning the Structure of Task-Oriented Conversations from the Corpus

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1、LearningtheStructureofTask-OrientedConversationsfromtheCorpusAnanladaChotimongkolLanguageTechnologiesInstituteSchoolofComputerScienceCarnegieMellonUniversityOutlineIntroductionForm-baseddialogstructureTaskstructureDialogmechanismsDialogstructurelearningConce

2、ptidentificationandclusteringFormidentificationOperationClassificationOutlineIntroductionForm-baseddialogstructureTaskstructureDialogmechanismsDialogstructurelearningConceptidentificationandclusteringFormidentificationOperationClassificationBuildinganewdialo

3、gsystemSpeechSynthesizerSpeechRecognizerNaturalLanguageGenerator“IwouldliketoflytoSeattletomorrow.”“Whenwouldyouliketoleave?”NaturalLanguageUnderstandingDialogManagerDomainKnowledgeDomainknowledgeStepsinthetaskSpecifythedesiredflightSearchforflightsthatmatch

4、thecriteriaNegotiatetheflightsMakeareservationImportantinformation,keywordsDestination,date,time,airlines,etc.Domainlanguage:howdopeopletalkWhatistheproblem?SpeechSynthesizerSpeechRecognizerNaturalLanguageGenerator“IwouldliketoflytoSeattletomorrow.”“Whenwoul

5、dyouliketoleave?”NaturalLanguageUnderstandingDialogManagerDomainKnowledgeCan’treuseTimeconsumingMayneedanexpertResearchgoalReducehumaneffortonacquiringdomainknowledgewhencreateadialogsysteminanewdomainBylearningthedomainknowledgefromdataObservationsTask-orie

6、ntedconversationshaveaclearstructureReflectsdomaininformatione.g.ataskisdividedintosub-tasksHasrecurringpatternsthatareobservablethroughthelanguageThesolutionsTolearndomainknowledgefromdataSpecifythestructureoftask-orientedconversationsCapturesufficientdomai

7、nknowledgeDomain-independentLearnableLearnthestructurefromacorpusofhuman-humanconversationsDialoguestructureTaskStructure(datarepresentation)NecessaryinformationforachievingataskgoalStepsinthetaskDomainkeywordsDialogmechanism(operations)Thewaysthatthepartici

8、pantscommunicateandperformthetaskOutlineIntroductionForm-baseddialogstructureTaskstructureDialogmechanismsDialogstructurelearningConceptidentificationandclusteringFormidentificationOperationClas