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System Design, Data Collection and Evaluation of a Speech Dialogue System
Katunobu ITOU Satoru HAYAMIZU Kazuyo TANAKA Hozumi TANAKA
IEICE TRANSACTIONS on Information and Systems
Publication Date: 1993/01/25
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Issue on Speech and Discourse Processing in Dialogue Systems)
speech dialogue system, spontaneous speech, continuous speech recognition, speech understanding,
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This paper describes design issues of a speech dialogue system, the evaluation of the system, and the data collection of spontaneous speech in a transportation guidance domain. As it is difficult to collect spontaneous speech and to use a real system for the collection and evaluation, the phenomena related with dialogues have not been quantitatively clarified yet. The authors constructed a speech dialogue system which operates in almost real time, with acceptable recognition accuracy and flexible dialogue control. The system was used for spontaneous speech collection in a transportation guidance domain. The system performance evaluated in the domain is the understanding rate of 84.2% for the utterances within the predefined grammar and the lexicon. Also some statistics of the spontaneous speech collected are given.