Network modularity.

Few large communities are identified in the wij(1) network compared to the wij(2) network. The five runs of the Louvain method finds exactly the same community structure in the wij(1) network, therefore we report the result of only one run. The community finding algorithm produced distinct community structures in the wij(2) network; therefore we report all five runs (the number after the hyphen denotes the sequence of the run). The pair-wise Cramer’s V index in wij(2) network is always above 0.95.Network modularity.