Table 1: Collaboration networks.

Network No. of nodes No. of edges No. of edges = No. of edges

Network science 379 914 0.143 47 10
Condensed matter 36458 171735 0.034 315 0
High-energy
theory
5835 13815 0.056 171 0
Astrophysics 14845 119652 0.018 357 0