Spectral Complexity of Directed Graphs and Application to Structural Decomposition

Figure 15

Clustering for Wikipedia who-votes-on-whom network with 2.9% of initial number of nodes in both cluster C1 and cluster C2. Nodes labels are nodes numbers in the network before removing sources. The nodes from cluster C1 are situated on light red background. The nodes from cluster C2 are situated on light green background. The edges going from cluster C1 to cluster C2 are red, the edges going from cluster C2 to cluster C1 are green, and the edges inside clusters are black.