"That suggests “you don’t want the ‘best’ community structure,” Moore says. “Instead, you want to understand what all the good community structures have in common with each other. The consensus of many good solutions is better than the ‘best’ single one.” To find that consensus, the pair turned to the notion of free energy, which in statistical physics takes into account the twin pressures of lowering a system’s energy and increasing its entropy -- the number of different configurations a system has at a given energy. In community detection, that translates into finding many structures with high modularity while at the same time ensuring that each individual structure is fairly similar to the next." - Todd Hoff