A Spoken Dialog System with Verification and Clarification Queries

Mikio YAMAMOTO  Satoshi KOBAYASHI  Yuji MORIYA  Seiichi NAKAGAWA  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E76-D   No.1   pp.84-94
Publication Date: 1993/01/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Issue on Speech and Discourse Processing in Dialogue Systems)
Category: 
Keyword: 
natural language processing,  speech recognition,  dialog system,  verification,  clarification,  

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Summary: 
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.