Figure 1
From: Local reputation, local selection, and the leading eight norms
Reputation and evolution mechanisms. (a) Suppose agent A and B are chosen to interact with each other. With local reputation, B can only ascertain A's reputation from A's neighbours. Likewise, A can only ascertain B's reputation from B's neighbours. These neighbours have probability δ of witnessing each of A and B's interactions and their most recent reputation. This is in contrast to global reputation where an agent's reputation is publicly known information. (b) With local evolution, agent E can only view the payoff (and the corresponding strategies) of his neighbours E1,...,4 and can update to the strategy that results in the greatest payoff in his neighbourhood with probability α. With global evolution, agent F can analyse the entire population, in this case F1,...,8, and find the strategy with the greatest average payoff amongst agent running that strategy.
