The topological properties of the HFS group.

N: number of nodes; L: number of links; Δ: network density; NC: number of components; NG: number of nodes in the giant component; : average degree; C: average clustering coefficient; l: average shortest path length; D: network diameter; λin: power of in-degree distribution; λout: power of in-degree distribution; r: total degree assortativity coefficient; rin: in-degree assortativity coefficient; rout: out-degree assortativity coefficient.