Efficient Rejoining for Ubiquitous Collaborative Graphics Editing Systems

Collaborative graphics editing systems in ubiquitous environment support users to join and leave the collaboration dynamically at any time. The shared workspace state of these users will be inconsistent for the modification of the other session members. It is therefore necessary to initialize the application instance of the latecomer with the current state. In this paper, we propose a rejoining scheme that is based on the user interest prediction algorithm we proposed. The scheme is efficient for latecomers to rejoin the collaborative design session. The scheme is realized in our prototype system of collaborative graphics editing system that can work well in ubiquitous environments.