Fig. 4: Actual recovery times.
From: Quantitative assessment can stabilize indirect reciprocity under imperfect information
We simulate the recovery from the state (0, N − 2, 0) to a state with s ∈ {0, 1} and k + l = N − 1 by simulating the reputation dynamics. a We find that the recovery time for all leading eight norms is linear in population size N. For L1, L3, L4, L7, the slope of the curve is ~1, whereas the slope is ~1.3 for the remaining four of the leading eight norms. b When we consider the average number of defections that occur before recovery, we see that this number decreases as the population size grows large. For sufficiently large populations, no defection occurs before recovery. Simulations are averaged over 10,000 rounds.
