Heterogeneous reputation promotes cooperation in spatial public goods game

Abstract

Many properties of things are heterogeneous, which promotes the reproduction and development of human society. Naturally, the reputation has heterogeneity, and the heterogeneity of reputation can effectively promote cooperation in evolutionary systems. However, how to measure the heterogeneity of reputation and reveal the evolutionary mechanisms by which it fosters cooperation is not fully understood. In this paper, a modified public goods game (PGG) model is proposed based on co-evolution mode, in which a player's reputation is measured by the number of times the player adheres to the same strategy. To better understand the influence of heterogeneous reputation on individual's decision, we propose two evolutionary mechanisms, namely the absolute mechanism and the relative mechanism based on reputation. Simulation verifies that two proposed mechanisms are easier to promote cooperation compared with the traditional PGG model, and the relative mechanism is easier to promote the evolution of cooperation than the absolute mechanism.