private DoubleMatrix SquaredDoubleMatrixFromDistanceMatrix() {
int n = myDistanceMatrix.getSize();
DoubleMatrix dm = DoubleMatrixFactory.DEFAULT.make(n, n);
for (int r = 0; r < n; r++) {
for (int c = 0; c < n; c++) {
double val = myDistanceMatrix.getDistance(r, c);
val *= val;
dm.set(r, c, val);
}
}
return dm;
}
@Override
public DoubleMatrix getEigenvectors() {
DoubleMatrix2D V = myDecomposition.getV();
int nrows = V.rows();
int ncols = V.columns();
DoubleMatrix dm = DoubleMatrixFactory.DEFAULT.make(nrows, ncols);
for (int r = 0; r < nrows; r++) {
for (int c = 0; c < ncols; c++) {
dm.set(r, c, V.getQuick(r, c));
}
}
return dm;
}
@Override
public DoubleMatrix getEigenvalueMatrix() {
double[] eigenvalues = getEigenvalues();
return DoubleMatrixFactory.DEFAULT.diagonal(eigenvalues);
}