Chat-Oriented Dialogue System That Uses User Information Acquired Through Dialogue and Its Long-Term Evaluation

Yuiko Tsunomori, Ryuichiro Higashinaka, Takeshi Yoshimura, Yoshinori Isoda

Abstract: A chat-oriented dialogue system can become more likeable if it can remember information about users and use that information during a dialogue. We propose a chat-oriented dialogue system that can use user information acquired during a dialogue and discuss its effectiveness on long-term interaction. In our subjective evaluation over five consecutive days, we compared three systems: a system that can remember and use user information over multiple days (proposed system), one that can only remember user information within a single dialogue session, and another that does not remember any user information. We found that users were significantly more satisfied with our proposed system than with the other two. This paper is the first to verify the effectiveness of remembering on long-term interaction with a fully automated chat-oriented dialogue system.