Table 1 Notations.

N(i)

Neighbor node set of node i

\(P_{uv}\)

Infection probability from node u to node v

\(\lambda (v,t)\)

Probability of node v being infected by neighbor nodes at time t

\(V_{I}\)

All infected nodes

\(I_{i}\), \(U_{i}\)

Infected (Uninfected) neighbor nodes of node i

\(\xi _{i}\)

Infection intensity of node i

\(\eta _{i}\)

Infection degree of node i

\(\psi _{i}(j)\)

Contribution of node j to node i

\(IE_{i}\)

Infection intensity entropy of node i

\(AE_{i}\)

Infection adjacency entropy of node i

\(NE_{i}\)

Neighborhood entropy of node i

\(C_{s}\)

Core convex set

\(Sim(n_{1},n_{2})\)

The similarity between node \(n_{1}\)and node \(n_{2}\)

\(\delta _{i}\)

Cohesion strength of node i

\(\hat{S}\)

Predicted source nodes