Recurrent emotional contagion for the crowd evacuation of a cyber-physical society

Recurrent emotional contagion for the crowd evacuation of a cyber-physical society
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网络物理社会人群疏散的反复情绪感染

DOI:
10.1016/j.ins.2021.06.036
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发表时间:
2021-06
影响因子:
8.1
通讯作者:
Hong Liu
Hong Liu
中科院分区:
计算机科学1区
文献类型:
--
作者:
Heng Liu;Dianjie Lu;Guijuan Zhang;Xiao Hong;Hong Liu

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近年来,由于情绪传染在大规模突发事件中经常引发踩踏、挤压等事件,引起了公共安全领域的高度重视。迄今为止,已有许多关于网络空间和物理空间中情绪传染的研究,为突发事件中人群疏散的仿真研究带来了强大的推动力。然而,由于网络空间和物理空间中人群的异质性,情绪传染很少被综合考虑在网络物理社会(CPS)。此外,在大规模疏散中容易出现的情绪复发的特征尚未完全阐明。因此,现有的模型不能准确地描述情绪传染的真实的情况,与现实存在较大的偏差。为了解决这个问题,我们提出了一个经常性的情绪传染(REC)方法的人群疏散的CPS。首先,我们构建了一个面向CPS的REC模型,考虑情绪复发对情绪传染过程的影响。其次,我们建立了基于度的平均场方程来描述个体数量的动态演化,同时考虑了群体的异质性。此外,我们使用有限差分法来推导数值解。第三,我们构造了循环小世界网络,它构成了CPS-REC的一个特例,以验证我们模型的有效性。最后,我们实现了一个基于CPS-REC模型的人群模拟系统,以可视化我们的理论分析的结果。实验结果表明,我们的方法可以更真实地模拟情绪传染过程。
In recent years, emotional contagion has drawn great attention in the field of public security since it often leads to stampedes and crushes during large-scale emergencies. To date, there have been many studies on emotional contagion in both cyberspace and physical space, bringing a strong impetus to the simulation of crowd evacuation in emergencies. However, due to the heterogeneity of crowds in cyberspace and physical space, emotional contagion is rarely comprehensively considered in the cyber-physical society (CPS). In addition, the characteristics of emotional recurrence prone to appear in large-scale evacuation have not yet been fully elucidated. Therefore, the existing models cannot accurately describe the real situation of emotional contagion since there is a wide deviation between it and the reality. To solve this problem, we propose a recurrent emotional contagion (REC) method for crowd evacuation of the CPS. First, we construct a CPS-oriented REC model by considering the influence of emotional recurrence on the emotional contagion process. Second, we build the degree-based Mean-Field Equations to describe the dynamic evolution of the number of individuals while considering the heterogeneity of crowds. Furthermore, we use the Finite Difference Method to derive the numerical solution. Third, we construct recurrent small-world networks, which constitute a special case of CPS-REC, to verify the effectiveness of our model. Finally, we implement a crowd simulation system based on the CPS-REC model to visualize the results of our theoretical analysis. The experimental results show that our method can more realistically simulate the emotional contagion process.
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