Abstract

This paper examines a method to improve the user impression of a spoken dialog system by introducing a mechanism that gradually changes form of utterances every time the user uses the system. In some languages, including Japanese, the form of utterances changes corresponding to social relationship between the talker and the listener. Thus, this mechanism can be effective to express the system’s intention to make social distance to the user closer; however, an actual effect of this method is not investigated enough when introduced to the dialog system. In this paper, we conduct dialog experiments and show that controlling the form of system utterances can improve the users’ impression.

Highlights

  • Demand for a spoken dialog system has raised, including AI speakers or personal assistant systems (Bellegarda, 2014)

  • The conventional task-oriented dialog systems (Aust et al, 1995; Zue et al, 2000), and non-task-oriented systems (Bickmore and Picard, 2005; Meguro et al, 2010; Yu et al, 2016; Akasaki and Kaji, 2017) have attracted the attention in recent years. In order for such dialog systems to become ubiquitous in the society, it is important to improve the user impression to the dialog with the system

  • We focused on a linguistic form of system utterances to improve the user impression

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Summary

Introduction

Demand for a spoken dialog system has raised, including AI speakers or personal assistant systems (Bellegarda, 2014). The conventional task-oriented dialog systems (Aust et al, 1995; Zue et al, 2000), and non-task-oriented systems (Bickmore and Picard, 2005; Meguro et al, 2010; Yu et al, 2016; Akasaki and Kaji, 2017) have attracted the attention in recent years. In order for such dialog systems to become ubiquitous in the society, it is important to improve the user impression to the dialog with the system. This research showed that, expressing intimacy with the user is effective to promote the user’s desire to use the system

Methods
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