si(i = 1,2,⋯mj)	The i-th sliding window.
|si|	The size of si.
Xi(i = 1, 2,⋯mj)	Concatenated input matrix for si.
Di = [d1, d2⋯dP], (i = 1, 2,⋯mj)	Dictionary.
dq(q = 1,2, ⋯ p)	Atom in the dictionary.
αi(i = 1, 2,⋯mj)	Coefficient matrix.
GFNj	The j-th group-wise functional network.
FNCk,p	The p-th functional network component occurring in sk.
TEG = (V, F)	Time-evolving graph with vertex set V and edge set E.
$e_k^{ij}$	Edge between the vertices GFNi and GFNj in the k-th layer of TEG.
$w_k^{ij}$	Weight of the edge $e_k^{ij}$.
Fk ∈ ℝN×f (k = 1, 2, ⋯ M)	Feature matrix of the k-th layer of TEG.
Gk ∈ ℝN×r (k = 1, 2, ⋯ M)	Role membership matrix.
H ∈ ℝr×f	Projection matrix from the role space to the feature space.
Qk ∈ ℝN×I	Measure matrix.
E ∈ ℝr×I	Contribution matrix of the measure index to the roles.
$N_i=\{GN{F}_j|e_k^{ij}\in E\}$	Neighbor vertices of GNFi.
${\overline{N}}_i=V\backslash \left(\left\{GN{F}_i\right\}\cup N_i\right)$	Vertex set that does not contain GNFi and Ni.
‖·‖1	l-1 norm.
‖·‖F	F norm.