The Impact of Imitation on Vaccination Behavior in Social Contact Networks
Figure 4
Frequency of vaccination as a function of the number of neighbors an individual has for the two extreme cases: fully payoff maximization (Θ = 0) and fully imitation (Θ = 1).
The homogeneous Poisson network is represented by (A,D), the urban network by (B,E), and the exponential-scaled power law network by (C,F). (A–C) the relative cost of vaccination r = 0.1; (D–E) r = 0.7. The solid line represents the average degree of the network, and the dashed line represents the average excess degree of the network. The average excess degree is a measure of the tendency to which individuals with high degree are connected to individuals with low degree, and vice versa [11].