C2 AT2HUB: Long-term Characterization of Robots based on Human Child's Personality Development.

Inadequate variety of personalities for communication robots may cause unnatural interaction with them and reduction in attachment. This paper proposes C(2)AT(2) HUB, where communication robots are characterized by changing tendency of affect transition based on long-term interaction with users. In C(2)AT(2) HUB, robots' affect is defined as two types; "interpersonal affect" and "emotions", and transition of each type of affect is adjusted by history of users' actions to robots in order to characterize robots gradually. Evaluation experiment revealed our approach characterizes robots naturally and improves impression of robots.