ABSTRACT
This chapter presents a hybrid approach to modeling and simulation of a huge crowd upon a hierarchical Grid simulation architecture. It suggests that the common shortcoming of existing models is the absence of modeling the social group process and its impact on human behavior. The chapter explores an approach to constructing simulations of huge crowd constituted by models of various scales and types; thus the dynamics of a huge crowd may be investigated at different levels in a manner more comprehensive than existing approaches do. It presents the hierarchical Grid computing architecture for large-scale simulation. The chapter identifies a typical scenario of the huge crowd phenomenon: an evacuation procedure of a crowd after a National Flag Raising Ceremony at Tiananmen Square. It describes a simulation system of the evacuation procedure of a huge crowd in an urban area that initially had a high density.
