Abstract
To comprehensively analyze the impact of both emotional contagion and evacuation assistant on the whole process of crowd evacuation, and to provide some feasible suggestions for safety officers, a novel approach named Improved Social Force Model Based on Emotional Contagion and Evacuation Assistant is proposed. To the best of our knowledge, this is the first work that comprehensively takes both emotional contagion and evacuation assistant into account in the relevant studies of Social Force Model. Firstly, we optimize the original Social Force Model to offset the overlapping phenomenon caused by pedestrians' body compression and relative tangential motion. Secondly, we construct an emotional-contagion-based model, which is integrated into the self-driving force of the Social Force Model, to dynamically adjust pedestrian's velocity and direction. Finally, specific evacuation strategies are adopted for different types of pedestrians, and evacuation assistants are set to guide the evacuees who are panic about the hazards in a rational way. Obviously, shown by extensive evaluations and experimental results, the model presented in this article reflects the influence of Emotional Contagion and Evacuation Assistant on crowd evacuation genuinely and efficiently, outperforming mainstream approaches in evacuation efficiency.
Highlights
In today’s modern life, more and more people tend to gather together to hold various parties
Extensive evaluations are conducted with mainstream approaches and the results show that ecaSFM genuinely and efficiently reflects the influence of emotional contagion and evacuation assistant in case of emergencies, but has obvious advantages in evacuation efficiency
From the analyses and practical experiments above, undoubtedly, we can draw a conclusion that factors like complicated reactions of pedestrians and emotional contagion are necessary to be taken into consideration in the whole process of crowd evacuation when we deal with emergencies
Summary
In today’s modern life, more and more people tend to gather together to hold various parties. With the development of Internet technology, the improvement of hardware equipment and the innovation of related approaches, scholars have begun to use computers for scenario modeling They try to simulate crowd evacuation from perspectives of sociology, psychology and mechanics. The evacuees with panic psychology are effectively guided by setting the optimal number and location of the evacuation assistant, making the evacuation more rational and efficient. In these ways, each group of pedestrians will have different speeds, directions and evacuation strategies. On the other hand we exploit evacuation assistant to guide the evacuees who are panic by hazard in a rational way and simulate diverse motion states of pedestrians.
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