Table 1 Table of symbols.

\(A_t\)

The adjacent matrix at snapshot t;

\(U_t \in R_+^{N\times K_t}\)

The basic matrix as of the moment of snapshot t;

\(H_t \in R_+^{N\times K_t}\)

The matrix of community membership of snapshot t;

\(Z_t\)

The \(t-1\) to t transition matrix;

\(L_t\)

The Laplacian graph of snapshot t;

\(C_t\)

The snapshot’s community label matrix of snapshot t;

\(S_t\)

The similarity matrix of snapshot t;

\(K_t\)

The quantity of communities of snapshot t;