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A Spoken Dialog System with Verification and Clarification Queries
Mikio YAMAMOTO Satoshi KOBAYASHI Yuji MORIYA Seiichi NAKAGAWA
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)
natural language processing, speech recognition, dialog system, verification, clarification,
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We studied the manner of clarification and verification in real dialogs and developed a spoken dialog system that can cope with the disambiguation of meanings of user input utterances. We analyzed content, query types and responses of human clarification queries. In human-human communications, ten percent of all sentences are concerned with meaning clarification. Therefore, in human-machine communications, we believe it is important that the machine verifies ambiguities occurring in dialog processing. We propose an architecture for a dialog system with this capability. Also, we have investigated the source of ambiguities in dialog processing and methods of dialog clarification for each part of the dialog system.