多个体系统的集体行为是复杂系统研究的重要切入点, 而Vicsek 模型是
研究多个体系统的一个基本模型, 它具备了复杂系统的一些关键特征, 如动态行
为、局部相互作用和变化的邻居关系等.(Collective behavior of multi agent system is an important entry point for complex system research, and Vicsek model is a basic model of multi agent system, which has some key features of complex system, such as dynamic behavior, local interaction and changing neighbor relations)