Paper: Corpus-Based Discourse Understanding In Spoken Dialogue Systems

ACL ID P03-1031
Title Corpus-Based Discourse Understanding In Spoken Dialogue Systems
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2003
Authors

This paper concerns the discourse under- standing process in spoken dialogue sys- tems. This process enables the system to understand user utterances based on the context of a dialogue. Since multiple can- didates 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 ut- terance. 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 sta- tistical information obtained from dia- logue corpora. Unlike conventional meth- ods that use hand-crafted rules, the pro- posed method enabl...