Study of individual´s risk perception in collective violent events

This paper uses Agent-based modeling and simulation to study collective violent events from the perspective of individual´s risk perception, by abstracting individual´s risk preference, emotion factor, risk level and other factors we analyze and explore the influence of each factors to collective violent events. Considerable simulations indicate that, individual´s density risk preference determines assemble morphology of the crowd and the event-relevance and emotion factor together determine the trend of events, while police´s timely and effective intervention could prevent the spreading of the events. These conclusions provide meaningful theoretical basis for relevant organs.