ISSD-93 Selected papers presented at the international symposium on Spoken dialogue
Empirical methods for artificial intelligence
Empirical methods for artificial intelligence
An architecture for more realistic conversational systems
Proceedings of the 6th international conference on Intelligent user interfaces
Plan Recognition in Natural Language Dialogue
Plan Recognition in Natural Language Dialogue
MIMIC: an adaptive mixed initiative spoken dialogue system for information queries
ANLC '00 Proceedings of the sixth conference on Applied natural language processing
Utilizing statistical dialogue act processing in VERBMOBIL
ACL '95 Proceedings of the 33rd annual meeting on Association for Computational Linguistics
Understanding unsegmented user utterances in real-time spoken dialogue systems
ACL '99 Proceedings of the 37th annual meeting of the Association for Computational Linguistics on Computational Linguistics
Evaluating discourse understanding in spoken dialogue systems
ACM Transactions on Speech and Language Processing (TSLP)
Partially observable Markov decision processes for spoken dialog systems
Computer Speech and Language
Mixture model POMDPs for efficient handling of uncertainty in dialogue management
HLT-Short '08 Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics on Human Language Technologies: Short Papers
ACLDemos '09 Proceedings of the ACL-IJCNLP 2009 Software Demonstrations
Towards the interpretation of utterance sequences in a dialogue system
SIGDIAL '09 Proceedings of the SIGDIAL 2009 Conference: The 10th Annual Meeting of the Special Interest Group on Discourse and Dialogue
Spoken language understanding via supervised learning and linguistically motivated features
NLDB'10 Proceedings of the Natural language processing and information systems, and 15th international conference on Applications of natural language to information systems
Expansion of WFST-based dialog management for handling multiple ASR hypotheses
IWSDS'10 Proceedings of the Second international conference on Spoken dialogue systems for ambient environments
Probabilistic ontology trees for belief tracking in dialog systems
SIGDIAL '10 Proceedings of the 11th Annual Meeting of the Special Interest Group on Discourse and Dialogue
A belief tracking challenge task for spoken dialog systems
SDCTD '12 NAACL-HLT Workshop on Future Directions and Needs in the Spoken Dialog Community: Tools and Data
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This paper concerns the discourse understanding process in spoken dialogue systems. This process enables the system to understand user utterances based on the context of a dialogue. Since multiple candidates for the understanding result can be obtained for a user utterance due to the ambiguity of speech understanding, it is not appropriate to decide on a single understanding result after each user utterance. By holding multiple candidates for understanding results and resolving the ambiguity as the dialogue progresses, the discourse understanding accuracy can be improved. This paper proposes a method for resolving this ambiguity based on statistical information obtained from dialogue corpora. Unlike conventional methods that use hand-crafted rules, the proposed method enables easy design of the discourse understanding process. Experiment results have shown that a system that exploits the proposed method performs sufficiently and that holding multiple candidates for understanding results is effective.