Influencer propagation model promotes cooperation in spatial public goods game

This study investigates an influencer propagation model in public goods game based on the leadership of example. We consider that participants have social identities as either role models or followers, in addition to being classified as defectors or cooperators by strategic choice. Participants are positioned at each point of the grid in the spatial lattice network. According to their identities, players have rules to calculate income and change strategy differently. We propose the parameters of the extra gain (alpha) and the influencer ratio (theta) as necessary to the model. Monte Carlo simulation results show that our model can effectively resist the invasion of defectors by forming stable cooperation groups and expanding cooperation advantages in evolution when the synergy factor r is low. Our work may provide a feasible solution to social dilemmas in public goods game, and inspire further exploration. (C) 2021 Elsevier B.V. All rights reserved.