private double[][] oblicz_odleglosci_mahal()
{
int i, j, cnt;
cnt = 0;
List<List<Double>> list = przepiszListe();
//double[][] odleglosc = new double[daneTab.Rows.Count][];
List<KeyValuePair<String, double>> odleglosc = new List<KeyValuePair<string, double>>();
int[] knn = new int[list.Count - 1];
// for (int x = 0; x < daneTab.Rows.Count; x++)
//odleglosc[x] = new double[daneTab.Rows.Count];
for (i = 0; i < list.Count; i++)
{
for (j = 0; j < list.Count; j++)
{
if (i == j)
continue;
double dist = 0;
cnt++;
double[,] matrix = new double[2, list[j].Count];
for(int r=0; r<list[j].Count;r++)
{
matrix[0,r] = list[i][r];
matrix[1,r] = list[j][r];
}
double[,] cov = Accord.Statistics.Tools.Covariance(matrix);
double[,] invertedcov = Accord.Math.Matrix.Inverse(cov);
dist = Distance.Mahalanobis(list[i].ToArray(), list[j].ToArray(), invertedcov);//(list[i], list[j]);
odleglosc.Add(new KeyValuePair<string, double>(daneTab.Rows[j].ItemArray[daneTab.Columns.Count - 1].ToString(), dist));
}
odleglosc.Sort(ckv);
string curClass = daneTab.Rows[i].ItemArray[daneTab.Columns.Count - 1].ToString();
for (int h = 1; h < list.Count - 1; h++)
{
cnt++;
//foreach (KeyValuePair<string, double> kv in odleglosc.Take(h))
//{
// if (kv.Key == curClass)
// dobre++;
//}
var licz =
from o in odleglosc.Take(h)
group o by o.Key into g
select new { a = g.Key, b = g.Count() };
licz = licz.OrderByDescending(v => v.b);
if (licz.ToList()[0].a == curClass)
{
knn[h]++;
}
}
odleglosc = new List<KeyValuePair<string, double>>();
}
WindowChart x = new WindowChart();
Dictionary<double, double> dict = new Dictionary<double, double>();
for (int u = 1; u < knn.Length; u++)
{
dict.Add(u, knn[u]);
}
x.addSeries(dict);
x.Show();
return null;
}
private double[][] oblicz_odleglosci_man()
{
int i, j;
List<List<Double>> list = przepiszListe();
//double[][] odleglosc = new double[daneTab.Rows.Count][];
List<KeyValuePair<String, double>> odleglosc = new List<KeyValuePair<string, double>>();
int[] knn = new int[list.Count - 1];
// for (int x = 0; x < daneTab.Rows.Count; x++)
//odleglosc[x] = new double[daneTab.Rows.Count];
for (i = 0; i < list.Count; i++)
{
for (j = 0; j < list.Count; j++)
{
if (i == j)
continue;
double dist = 0;
dist = Distance.Manhattan(list[i].ToArray(), list[j].ToArray());
odleglosc.Add(new KeyValuePair<string, double>(daneTab.Rows[j].ItemArray[daneTab.Columns.Count - 1].ToString(), dist));
}
odleglosc.Sort(ckv);
string curClass = daneTab.Rows[i].ItemArray[daneTab.Columns.Count - 1].ToString();
for (int h = 1; h < list.Count - 1; h++)
{
//foreach (KeyValuePair<string, double> kv in odleglosc.Take(h))
//{
// if (kv.Key == curClass)
// dobre++;
//}
var licz =
from o in odleglosc.Take(h)
group o by o.Key into g
select new { a = g.Key, b = g.Count() };
licz = licz.OrderByDescending(v => v.b);
if (licz.ToList()[0].a == curClass)
{
knn[h]++;
}
}
odleglosc = new List<KeyValuePair<string, double>>();
}
WindowChart x = new WindowChart();
Dictionary<double, double> dict = new Dictionary<double, double>();
for (int u = 1; u < knn.Length; u++)
{
dict.Add(u, knn[u]);
}
x.addSeries(dict);
x.Show();
return null;
}
//Rysowanie
private void rys_wykres_Click(object sender, RoutedEventArgs e)
{
List<object> klasy = zliczWystapieniaDoSlownika();
Dictionary<double, double> slownik;
WindowChart oknowykres = new WindowChart();
foreach (object o in klasy)
{
slownik = new Dictionary<double, double>();
foreach (DataRow r in daneTab.Rows)
{
if (!(r[wybor_chart_klasa.SelectedIndex].Equals(o)))
continue;
if (!slownik.ContainsKey(Double.Parse(r[wybor_chart1.SelectedIndex].ToString())))
slownik.Add(Double.Parse(r[wybor_chart1.SelectedIndex].ToString()), Double.Parse(r[wybor_chart2.SelectedIndex].ToString()));
}
oknowykres.addSeries(slownik);
}
oknowykres.Show();
}