Agreement between community detection methods.

The top triangular matrix contains normalized mutual information (NMI) scores comparing the resulting communities between the different methods. The bottom triangular matrix shows NMI over just the subset of nodes that Radius+Comms placed into a community. The number of nodes considered for each network were: (C. elegans) 277, (Gowalla) 134, (CA Internet) 28, (Airline)) 36. The first four rows (columns) are computed by using the referenced model as the null model and applying modularity optimization [40]. The last row (column), with the blue tinted background, is the result of our Radius+Comms model, in which the community structure is identified within the model itself.