Ejemplo n.º 1
0
        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;
        }
Ejemplo n.º 2
0
        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;
        }
Ejemplo n.º 3
0
        //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();
        }