Popularity-driven fitness calculation promotes cooperation in spatial prisoner’s dilemma game

It has been shown that an individual’s popularity is a crucial factor that favors cooperation. However, it is not yet well understood how an individual’s popularity affects the evolution of cooperation. In this paper, we propose a simple model to explore this important and interesting issue in spatial prisoner’s dilemma game. Our proposed model integrates an individual’s popularity into the calculation of an individual’s fitness via a single...