基于改进的Vicsek模型的群体决策仿真研究

通过改进Vicsek模型来研究群体决策问题.针对Vicsek模型中过于简单和同质的个体特征,首次通过赋予个体以自信阈值,使得个体在方向更新时不是简单地采用邻居方向的均值,而是考虑自身的方向和邻居方向均值的差异,再以一定规则进行更新.仿真实验结果表明,通过对个体加入符合实际情况的心理特性,会很大程度上影响系统的收敛时间,由此可以得出,在Vicsek模型中加入个体心理特性是符合群体决策实际情况的.

Simulation Study on Group Decision-making Based on Modified Vicsek Model

In this paper, the Vicsek model is modified to research group decision-making. As the individual characteristics in Viesek model are too simple and homogeneous, we give the individuals with the confidence threshold to make the direction update of individuals not only simply adopting the direction of the mean of the neighbors＇ directions, hut also considering the difference between their own direction and the mean directions of the neighbors, and then update individual direction according to some rules. The simulation results show that it will largely influence system convergence time by adding psychological characteristics to the individuals.