We mainly report results on a uniform infection probability of 0.1 assigned to each directed link in the network, i.e., ip(u, v) = 0.1 for any directed edge (u, v) ∈ E. One can refer to the work [14, 33, 36] for learning real values of the parameters {ip(u, v) : (u, v) ∈ E} from available data.