In addition to the emergent complexity of patterns that appears when many
agents come in interaction, it is also useful to characterize the dynamical
processes that lead to their self-organization. A set of ergodic invariants is
identified for this purpose, which is computed in several examples, namely a
Bernoulli network with either global or nearest-neighbor coupling, a
generalized Bak-Sneppen model and a continuous minority model.Comment: 21 pages Latex, 9 eps figure