(A) Domains of optimization for the pruned set of partitions, colored by the number of communities within each partition. The set of partitions was generated from 240, 000 runs of GenLouvain [41] on a 600 × 400 uniform grid over [0.3, 2] × [0, 2] in (γ,ω). The largest partitions are labeled “X.Y” with X the number of communities with ≥ 5 nodes and Y the rank of the domain area (that is, in terms of size) for that given number of communities (e.g., “5.2” is the second-largest domain corresponding to 5-community partitions). The partitions of each labeled domain are visualized in Appendix A; (B) Weighted-average AMI of each partition with its neighboring domains’ partitions, weighted by the length of the borders between neighboring domains.