Network characteristics: values are calculated based on 100 nodes.

Scale-free network is formed by preferential attachment, with average degree around 4; small-world network is formed by rewiring from 2D lattice, with reviewing rate as 0.1. Numbers within brackets are standard deviations of values in scale-free and small-world networks.无标度网络（scale-free network）通过偏好依附（preferential attachment）机制生成，其平均度约为4；小世界网络（small-world network）由二维晶格重连生成，重连率为0.1。括号内的数值分别为无标度网络和小世界网络对应参数的标准差。