@Override
protected void createMatrix() throws Exception {
// Create a symmetrical matrix
int n = Utilities.getInt(1, max);
int b = Utilities.getInt(Math.min(bmax, n));
A = new FlexCompRowMatrix(n, n);
Utilities.symmetryPopulate(A, b);
// Need positive eigenvalues
addDiagonal(A, shift);
SymmDenseEVD evd = SymmDenseEVD.factorize(A);