Relationship between Personality and Robots' Interaction Strategies in Object Reference Conversations

The recognition of an object indicated by an interacting person is an important function for a robot that provides services in daily environments. To improve recognition performance, we must decrease the ambiguity of indicating the behaviors of people. For this purpose, two interaction strategies have been proposed: explicitly providing instructions to people about how to refer to objects or implicitly aligning with people’s indicating behaviors. Although human personality is an important factor in human-robot interactions, the relationship between personality and the two strategies has not been revealed. Moreover, it remains unknown which strategy is appropriate to individual personalities. In this paper, we investigate the relationship between human personalities and the two robot interaction strategies in object recognition contexts in conversations with people. Our experimental results suggest that appropriate interaction strategies differ by individual personalities.