Building a behavior model for the Ubiquitous Display to be used in a large-scale public facility

In this paper, we built a behavior model for the Ubiquitous Display (UD) to provide a situation oriented service to the users in a large-scale public facility. The UD is a mobile-projection robot to support the user with visual information. If the UD provides a service in a public facility, we should assume the possible situations previously. According to the situation, the model should be built in consideration of its purpose. Thus, we clarify the UD´s actions and define the sequences of behavior while the UD provides a service in a shopping mall, which is a sort of the large public facility. Moreover, we developed a computer simulation software in order to verify the validity of the proposed model.