A Social Group Evacuation Model Considering Individual Panic and Crowd Chaos

Abstract:

In order to reveal the impact of small group search behavior on the evacuation process， two different search strategies for social small groups were designed， and the calculation method of individual panic mood was defined based on the personality model. Meanwhile， the entropy theory was introduced to quantitatively characterize the perception of evacuation individuals on the degree of chaos in the surrounding population. An evacuation model for social group was established considering individual panic and crowd chaos. The simulation results show that social group search behavior is related to small group number and search strategies， and will aggravate the degree of panic and population chaos， and thus affect the evacuation efficiency.

Key words:crowd evacuation;social groups;entropy;panic