Controlling non-verbal information in speaker-change for spoken dialogue

The authors focus on two main topics concerning a model for use of non-verbal information. The first topic is the clarification of the difference of the model between using non-verbal information by human beings and using non-verbal information by robot. The other topic is the clarification of the difference of the model between a CG simulated robot and a real robot. As a result, we clarified the strength of constraint and naturalness of various types of non-verbal information. We also confirmed that appropriate output timing of non-verbal information with the CG robot is the start of utterances. This is the same as the usage of non-verbal information in human-human dialogue. Moreover, we confirmed that non-verbal information made speaker change more smooth for the humanoid robot than in the case of the CG robot