How to manage interactive dialogues of avatar agents by using 3D spatial information of virtual world

Chat and instant messaging are crucial functions in the Internet environment. Internet chat and instant messaging services are becoming increasingly popular among Internet users. One of the crucial issues in Internet chat is how to manage the corresponding pairs of questions and answers in a sequence of conversations. There are numerous novel methodologies for coping with this problem, but most are poor at managing interruptions, organizing turn-taking and conveying comprehension. Nowadays, since the Internet environment is evolving into the 3D Internet environment, it is highly desirable to exploit this 3D information in virtual chat environments. There are a few chat systems based on 3D virtual environments that made improvements to these 3D chat systems, such as rendering avatars and 3D spaces, but the problems(managing chat dialogues) in the standard 2D text-based chat remained. So, we proposed more realistic 3D virtual chat system using 3D spatial information[8]. In this paper, we improve our previous work. Finally, our experiment shows that our system is highly effective in a virtual chat environment.