Presentation 2001/7/10
Efficient Dialogue Control Based on Dialogue Cost Minimization
Kohji Dohsaka, Norihito Yasuda, Kiyoaki Aikawa,
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Abstract(in English) WE present a dialogue control method called the "dual-cost method", by which a spoken dialogue system carries out an efficient dialogue within the confines of the data stored as the system's knowledge in its database. Due to speech recognition errors, a spoken dialogue system has to carry out a "confirmation dialogue" to clarify a user request. previous methods have a problem of invoking unnecessary confirmations, since they attempt to confirm the whole contents of a user request even though the request is beyond the system's knowledge. To resolve this problem, we introduce the notions of confirmation cost and information transfer cost. The confirmation cost is the length of a confirmation dialogue and depends on the speech recognition rate. The information transfer cost is the length of a system response after the confirmation dailogue and depends on the system's knowledge. The dual-cost method controls a dialogue based on the minimization of these two costs and can avoid unnecessary exchanges, which are inevitable in conventional methods.
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Keyword(in English) spoken dialogue system / dialogue control / dialogue management
Paper # NLC2001-34
Date of Issue

Conference Information
Committee NLC
Conference Date 2001/7/10(1days)
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Paper Information
Registration To Natural Language Understanding and Models of Communication (NLC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Efficient Dialogue Control Based on Dialogue Cost Minimization
Sub Title (in English)
Keyword(1) spoken dialogue system
Keyword(2) dialogue control
Keyword(3) dialogue management
1st Author's Name Kohji Dohsaka
1st Author's Affiliation NTT Communication Science Laboratories()
2nd Author's Name Norihito Yasuda
2nd Author's Affiliation NTT Communication Science Laboratories
3rd Author's Name Kiyoaki Aikawa
3rd Author's Affiliation NTT Communication Science Laboratories
Date 2001/7/10
Paper # NLC2001-34
Volume (vol) vol.101
Number (no) 190
Page pp.pp.-
#Pages 8
Date of Issue