The Stability of SI Epidemic Model in Complex Networks with Stochastic Perturbation

Figure 1

𝜆=0.025, 𝜎_𝑘1=0.005, 𝜎_𝑘2=0.03, 𝑅₀≤1. (a), (b) 𝑃(𝑘)=𝑚^𝑘exp(−𝑚)/𝑘!, 𝑚=6, 𝑅₀=0.4704≤1; (c), (d) 𝑃(𝑘)=2𝑚²𝑘⁻³, 𝑚=3, 𝑅₀=0.9071≤1.

(a)

(b)

(c)

(d)