public double EuclideanDistance(IrisItem irisITem)
{
return Math.Sqrt(Math.Pow(irisITem.PanjangSepal - PanjangSepal, 2) +
Math.Pow(irisITem.LebarSepal - LebarSepal, 2) +
Math.Pow(irisITem.PanjangPetal - PanjangPetal, 2) +
Math.Pow(irisITem.LebarPetal - LebarPetal, 2));
}
public double[] countHiddenValue(IrisItem irisItem, Matrix gausianMatrix, int jumlahCluster)
{
double[] hiddenValue = new double[jumlahCluster];
double[] iris = irisItem.toArray();
double[,] gausian = gausianMatrix.ToArray();
for (int i = 0; i < jumlahCluster; i++)
{
double temp = 0;
for (int j = 0; j < iris.Length; j++)
{
temp += (iris[j] * gausianMatrix[i, j]);
}
temp = 1 / (1 + Math.Exp(-1 * temp));
temp = (temp > 0.6) ? 1 : 0;
hiddenValue[i] = temp;
}
return hiddenValue;
}
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
listIrisItem.Clear();
using (System.IO.StreamReader reader = new System.IO.StreamReader(openFileDialog1.FileName)) {
try {
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
string[] arrayItem = line.Split(new char[1] {','});
double temp = 0d;
IrisItem item = new IrisItem();
item.Nama = arrayItem[4];
item.PanjangSepal = (double.TryParse(arrayItem[0], out temp)) ? temp : 0;
item.LebarSepal = (double.TryParse(arrayItem[1], out temp)) ? temp : 0;
item.PanjangPetal = (double.TryParse(arrayItem[2], out temp)) ? temp : 0;
item.LebarPetal = (double.TryParse(arrayItem[3], out temp)) ? temp : 0;
item.setTarget();
listIrisItem.Add(item);
}
}
catch (Exception ex) {
General.ShowError(ex.Message);
}
}
txtFilePath.Text = openFileDialog1.FileName;
DisplayData();
}
public Matrix getBobot(IrisItem item, List<ClusterItem> listCluster)
{
double[,] temp = new double[listCluster.Count, 4];
double[] iris = item.toArray();
for (int i = 0; i < listCluster.Count; i++)
{
for (int j = 0; j < iris.Length; j++)
{
temp[i, j] = getBobot(listCluster[i].toArray(), iris[j], getVariance(listCluster[i].toArray(), listCluster.Count));
}
}
Matrix gausianMatrix = DenseMatrix.OfArray(temp);
return gausianMatrix;
}