Generates a graph Laplacian from the graph adjacency matrix.
Usage
adj2lapl(A)
Arguments
A
n-by-n adjacency matrix for a graph with n nodes
Value
The n-by-n Laplacian matrix of the graph
Details
A graph Laplacian is defined as:
$ l_{i,j} = deg( v_i ) $, if $ i = j $;
$ l_{i,j} = -1 $, if $ i \neq j $ and $v_i$ is adjacent to $v_j$;
and $ l_{i,j} = 0 $, otherwise