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）通过优先连接（preferential attachment）机制生成，平均度约为4；小世界网络（small-world network）由二维晶格经重连操作生成，其重连率为0.1。括号内的数值分别为无标度网络与小世界网络各对应指标的标准差。