人工知能学会論文誌
Online ISSN : 1346-8030
Print ISSN : 1346-0714
ISSN-L : 1346-0714
原著論文
対話の低速化とArtificial Subtle Expressionによる発話衝突の抑制
船越 孝太郎小林 一樹中野 幹生小松 孝徳山田 誠二
著者情報
ジャーナル フリー

2011 年 26 巻 2 号 p. 353-365

詳細
抄録

We argue that task-oriented spoken dialogue systems or communication robots do not need to quickly respond verbally as long as they quickly respond non-verbally by showing their internal states by using an artificial subtle expression. This paper describes an experiment whose results support this point. In this experiment, 48 participants engaged in reservation tasks with a spoken dialogue system coupled with an interface robot using a blinking light expression. The blinking light expression is designed as an artificial subtle expression to intuitively notify a user about a robot's internal states (such as processing) for the sake of reducing speech collisions as consequences of turn-taking failures due to end-of-turn misdetection. Speech collisions harm smooth speech communication and degrade system usability. Two experimental factors were setup: the blinking light factor (with or without a blinking light) and the reply speed factor (moderate or slow reply speed), resulting in four experimental conditions. The results suggest that both the slow reply speed and the blinking light expression can reduce speech collisions, and improve a user's impression. Meanwhile, contrary to expectation, no degradation of evaluation due to the slow reply speed was found.

著者関連情報
© 2011 JSAI (The Japanese Society for Artificial Intelligence)
前の記事 次の記事
feedback
Top