Study on spoken dialogue system with safety consideration based on automatic estimation of driving situation

2016 Fiscal Year Final Research Report

• Project/Area Number: 26730092
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Perceptual information processing
• Research Institution: Okayama University
• Principal Investigator: Hara Sunao 岡山大学, 自然科学研究科, 助教 (50402467)
• Research Collaborator: ABE Masanobu ; YAMAOKA Masaki ; TOBA Shunji
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 音声対話 / 情報検索 / 運転行動 / 生体信号 / スマートフォン

Outline of Final Research Achievements

We conducted below:
(1) We used bio signals and driving information signals that are measured by the driver’s body and the vehicle’s body for estimating the driving road from the signals. Furthermore, we estimated driving load assuming use of sensors obtained by smartphones. (2) We evaluated the spoken dialog strategy from the viewpoint of user’s driving load. An objective evaluation by computer simulation was conducted by considering both dialog initiatives and the exitance of confirmation utterances. (3) We conducted a subjective evaluation to evaluate the performance of the proposed dialog strategy as a spoken dialog system. The subjects were asked to drive a simulator during talking with a spoken dialog system. (4) A dialog strategy based on graph search was introduced to realize a dialog strategy which considering the estimation result of the user's mental load. We evaluated the proposed system by objective evaluation and subjective evaluation.

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