Figure 1

Structure of the religion network. (a) Structural layout of the network neglecting the directions of links, where blue, orange, green and red nodes denote Christians, Buddhists, Islamists and Taoists, respectively. This network is visualized by Gephi (gephi.org). (b) The out-degree distribution in a log–log plot, with an estimated power-law exponent \(\alpha \approx 2.93\). (c) The in-degree distribution in a log–log plot, with an estimated power-law exponent \(\alpha \approx 2.47\)