public void Assign(nPoint obj)
{
for (int i = 0; i < Metrik.Length; i++)
{
this.Metrik[i] = obj.Metrik[i];
}
}
public static double MaxRadius(List <nPoint> nPoints, nPoint center)
{
var maxValue = Enumerable.Range(0, nPoints.Count)
.Select(x => Length(nPoints.ElementAt(x), center))
.ToArray().Max();
return(maxValue);
}
public static nPoint GetCenter(List <nPoint> nPoints)
{
nPoint centerPoint = new nPoint("C", nPoints.First().Metrik.Length);
for (int i = 0; i < centerPoint.Metrik.Length; i++)
{
centerPoint.Metrik[i] = nPoints.Average(x => x.Metrik[i]);
}
return(centerPoint);
}
public static double Length(nPoint x1, nPoint x2)
{
double sum = 0;
for (int i = 0; i < x1.Metrik.Length; i++)
{
sum += Math.Pow((x1.Metrik[i] - x2.Metrik[i]), 2);
}
return(Math.Pow(sum, (1.0 / x1.Metrik.Length)));
}
public Taxon(double radius, nPoint center, List <nPoint> points)
{
Points.AddRange(points);
centerTaxon = GetCenter(Points);
Radius = MaxRadius(Points, centerTaxon);
}
private void btnToDo_Click(object sender, EventArgs e)
{
// clear result datagrid
for (int i = 1; i <= number; i++)
{
for (int j = 1; j <= 3; j++)
{
dataGridViewClassTable[j, i].Value = "";
}
}
//
List <nPoint> bufferAll = new List <nPoint>();
List <nPoint> bufferInternal = new List <nPoint>();
for (int i = 0; i < number; i++)
{
var point = new nPoint(i, classDataset, testDataset, metrik);
bufferAll.Add(point);
}
for (int i = 1; bufferAll.Count != 0; i++)
{
// step 1
bufferInternal.AddRange(bufferAll);
centerPoint = new double[metrik];
for (int j = 0; j < metrik; j++)
{
centerPoint[j] = bufferAll.Average(x => x.metrik[j]);
}
radius = MaxRadius(bufferAll, centerPoint);
// step 2
while (true)
{
radius *= 0.9;
for (int j = 0; j < bufferInternal.Count; j++)
{
var point = bufferInternal.ElementAt(j);
if (GetLength(point.metrik, bufferInternal.First().metrik) > radius)
{
bufferInternal.Remove(point);
}
}
// step 3
var centerGravity = new double[metrik];
for (int j = 0; j < metrik; j++)
{
centerGravity[j] = bufferInternal.Average(x => x.metrik[j]);
}
// step 5
if (Equil(centerGravity, centerPoint))
{
bufferAll.RemoveAll(item => bufferInternal.Contains(item));
break;
}
else
{
for (int j = 0; j < metrik; j++)
{
centerPoint[j] = centerGravity[j];
}
}
}
// step 6
dataGridViewClassTable[1, i].Value = string.Format("Class - " + bufferInternal.Average(x => x.classValue));
dataGridViewClassTable[2, i].Value = string.Join(" ", bufferInternal.Select(x => x.index + 1));
dataGridViewClassTable[3, i].Value = (bufferInternal.Count == 1) ? 0 : Math.Round(radius, 2);
bufferInternal.RemoveRange(0, bufferInternal.Count);
}
}