public void Substract_RestulVectorIsCorrect()
{
Vector vector = new Vector(new double[] { 1.0, 2.0, 3.0 });
Vector vector2 = new Vector(new double[] { 2.0, 4.0, 6.0 });
vector.Subtract(vector2);
Assert.AreEqual(vector.Values[0], -1.0);
Assert.AreEqual(vector.Values[1], -2.0);
Assert.AreEqual(vector.Values[2], -3.0);
}
public List<Vector> GetScatterVectors()
{
List<Vector> scatterVectors = new List<Vector>(clustersX.Count - 1);
Vector C = this.GetCFromClustersX();
foreach (var item in clustersX)
{
Vector newScatter = new Vector(item.Mean.Values.ToArray());
newScatter.Subtract(C);
scatterVectors.Add(newScatter);
}
// delete one vectore, we need q-1
int i = 0;
int index = 0;
int minCount = int.MaxValue;
foreach (var item in clustersX)
{
if (item.Items.Count < minCount)
{
index = i;
minCount = item.Items.Count;
}
i++;
}
//removing vector
scatterVectors.RemoveAt(index);
return scatterVectors;
}