International Symposium on Digital City Design (2004.12.9) Crisis Management Simulations in Digital Cities
Toru Ishida To realize crisis management systems with digital cities, this talk proposes a new system design methodology called society-centered design. We have already developed the scenario description language Q, which describes interaction protocols that link agents to society. Using the virtual space called FreeWalk, wherein agents behave under given Q scenarios, I explain each step of society-centered design. The process consists of participatory simulation, where agents and human-controlled avatars coexist in virtual space to jointly perform simulations, and augmented experiment, where an experiment is performed in real space by human subjects, scenario-controlled agents, and human extras. We have applied the society-centered design approach to evacuation systems. A participatory simulation was performed to learn accurate models of human behaviors, we replaced six out of twenty scenario-controlled agents by human-controlled avatars. To perform augmented experiments, we placed more than twenty cameras in Kyoto subway stations, and successfully captured the movements of passengers in real time. We then reproduced their behavior in virtual space. The bird's-eye view of real space is reproduced on the screen of the control center so as to monitor the experiment and to communicate with people in the subway station by mobile phones.
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