private static Tuple<double[][], double[][]> split(double[][] cluster, KMeans kmeans)
{
kmeans.Randomize(cluster);
int[] idx = kmeans.Learn(cluster).Decide(cluster);
List<double[]> a = new List<double[]>();
List<double[]> b = new List<double[]>();
for (int i = 0; i < idx.Length; i++)
{
if (idx[i] == 0)
a.Add(cluster[i]);
else
b.Add(cluster[i]);
}
return Tuple.Create(a.ToArray(), b.ToArray());
}
}