Figure 6. The average offer level p, acceptance level q, and the average payoff w of the population as functions of the parameter γ in a typical evolutionary process.
The population is structured by the scale-free networks. The feedback-based role assignment regime is invoked to determine whoever acts as the proposer. The larger the γ is, the more strong whoever acts as the proposer in next round depends on the outcome of previous round. The population dynamics exhibit no significant difference in terms of p, q and w for individuals of varying degree for γ = 1. Other parameter: m = 3, m0 = 3, the population size N = 1000, selection intensity β = 10, δ = 0.005.