Positive correlation between strategy persistence and teaching ability promotes cooperation in evolutionary Prisoner's Dilemma games

摘要

Strategy persistence and heterogeneous teaching ability are two factors that play important roles in promoting cooperation. In this work, we simultaneously take the strategy persistence and heterogeneous teaching ability into account in evolutionary prisoner's dilemma games. We introduce the correlation between strategy persistence (tau) and teaching ability (omega) by partitioning a population into two groups. In the positive (negative) correlation scheme, individuals in one group are assigned with large tau and omega = 1 (reduced teaching ability omega < 1) and those in the other with tau = 0 and omega < 1 (omega = 1). The simulation results show that, compared to negative correlation, positive correlation between strategy persistence and teaching ability can greatly enhance cooperation and result in a much higher cooperation level. Furthermore, we show that the finding is robust with respect to reduced teaching ability omega, initial cooperator fraction f(0), amplitude of noise K and underlying network topology. (C) 2019 Elsevier B.V. All rights reserved.