private Dictionary <int, double[][]> UpdateClusterData(double[][] centroids, double[][] observations, int k)
{
var clusters = new Dictionary <int, double[][]>();
for (int j = 0; j < k; j++)
{
clusters.Add(j, new double[0][]);
}
for (int n = 0; n < observations.Length; n++)
{
double minDistance = double.MaxValue;
var selectedCluster = int.MinValue;
for (int i = 0; i < k; i++)
{
var distance = Euclidean.Calculate(centroids[i], observations[n]);
if (distance < minDistance)
{
selectedCluster = i;
minDistance = distance;
}
}
clusters[selectedCluster] = clusters[selectedCluster].Append(observations[n]);
}
return(clusters);
}
public void Calculate_TwoVectors_EuclideanDistance()
{
var x = new double[] { 500, 500 };
var y = new double[] { 410, 400 };
var d = Euclidean.Calculate(x, y);
Assert.AreEqual(134.53624, Math.Round(d, 6));
}
public void ComparePoints()
{
Euclidean euclidean = new Euclidean();
var res = euclidean.Calculate(Points[1].CustomerSalesInfo, Points[2].CustomerSalesInfo);
for (int i = 0; i < Points[1].CustomerSalesInfo.Length; i++)
{
Console.WriteLine(Points[1].CustomerSalesInfo[i] + ",");
}
Console.WriteLine("Euclidean: " + res);
}
private void btnSearch_Click(object sender, RoutedEventArgs e)
{
if (txtPrice.Text.Length > 0)
{
if (cb_CPU.SelectedIndex != -1 || cb_cores.SelectedIndex != -1 || cb_RAM.SelectedIndex != -1 ||
cb_SSDorHDD.SelectedIndex != -1 || cb_Storage.SelectedIndex != -1 || cb_vRam.SelectedIndex != -1 ||
cb_diagonal.SelectedIndex != -1 || cb_weight.SelectedIndex != -1 || cb_battery_capacity.SelectedIndex != -1 ||
cb_refresh_rate.SelectedIndex != -1 || par_CPU.SelectedIndex != -1 || par_Cores.SelectedIndex != -1 ||
par_RAM.SelectedIndex != -1 || par_SDDHDD.SelectedIndex != -1 || par_Sorage.SelectedIndex != -1 ||
par_VRAM.SelectedIndex != -1 || par_DIAG.SelectedIndex != -1 || par_Weigh.SelectedIndex != -1 ||
!par_BATTERY.SelectedIndex.Equals(-1) || !par_REFRESH.SelectedIndex.Equals(-1))
{
int prefPrice = cb_refresh_rate_Copy.SelectedIndex + 1;
int prefCPU = cb_CPU.SelectedIndex + 1;
int prefCores = cb_cores.SelectedIndex + 1;
int prefRAM = cb_RAM.SelectedIndex + 1;
int prefSSDorHDD = cb_SSDorHDD.SelectedIndex + 1;
int prefStorage = cb_Storage.SelectedIndex + 1;
int prefVRAM = cb_vRam.SelectedIndex + 1;
int prefDiagonal = cb_diagonal.SelectedIndex + 1;
int prefWeight = cb_weight.SelectedIndex + 1;
int prefBatteryCapacity = cb_battery_capacity.SelectedIndex + 1;
int prefRefreshRate = cb_refresh_rate.SelectedIndex + 1;
Computer desiredSpecs = new Computer();
desiredSpecs.setBatteryCapacity(Convert.ToInt32(par_BATTERY.SelectedItem));
desiredSpecs.setCores(Convert.ToInt32(par_Cores.SelectedItem));
desiredSpecs.setCPU(Convert.ToDouble(par_CPU.SelectedItem));
desiredSpecs.setDiagonal(Convert.ToDouble(par_DIAG.SelectedItem));
desiredSpecs.setRAM(Convert.ToInt32(par_RAM.SelectedItem));
desiredSpecs.setRefreshRate(Convert.ToInt32(par_REFRESH.SelectedItem));
desiredSpecs.setVRAM(Convert.ToInt32(par_VRAM.SelectedItem));
desiredSpecs.setWeight(Convert.ToDouble(par_Weigh.SelectedItem));
desiredSpecs.setSSD(Convert.ToBoolean(par_SDDHDD.SelectedItem));
desiredSpecs.setStorageCapacity(Convert.ToInt32(par_Sorage.SelectedItem));
desiredSpecs.setPrice(Convert.ToDouble(txtPrice.Text));
pcs = Euclidean.Calculate(prefPrice, prefCPU, prefCores, prefRAM, prefSSDorHDD, prefStorage, prefVRAM, prefDiagonal,
prefWeight, prefBatteryCapacity, prefRefreshRate, listOfComputers, desiredSpecs);
pcs.Sort((x, y) => x.getResult().CompareTo(y.getResult()));
FillUC(pcs);
}
else
{
MessageBox.Show("Neįrašėte pasirinkimų");
}
}
else
{
MessageBox.Show("Neįrašėte kainos");
}
}
private double[] GetPointWithMaxDistance(double[][] clusterCentroids, double[][] observations, double[] point)
{
double[] result = null;
var maxDistance = double.MinValue;
for (int i = 0; i < observations.Length; i++)
{
var distance = Euclidean.Calculate(point, observations[i]);
if (distance > maxDistance && !clusterCentroids.In(observations[i]))
{
maxDistance = distance;
result = observations[i];
}
}
return(result);
}
static void Main(string[] args)
{
Dictionary <int, List <UserPreferences> > dataSet;
SelectFile selectFile = new SelectFile();
selectFile.selectDataSet();//
FileReader newFile = new FileReader();
dataSet = newFile.selectBigDataset();
Console.WriteLine("------ Pearson ------");
Pearson pearsonTest = new Pearson(dataSet);
for (int i = 1; i < dataSet.Count; i++)
{
Console.WriteLine("user: "******" | vs the rest!: " + pearsonTest.Calculate(i));
}
Console.WriteLine("------ Euclidean ------");
Euclidean euclideanTest = new Euclidean(dataSet);
for (int i = 1; i < dataSet.Count; i++)
{
Console.WriteLine(euclideanTest.Calculate(i));
}
Console.WriteLine("------ Cosine ------");
Cosine cosineTest = new Cosine(dataSet);
for (int i = 1; i < dataSet.Count; i++)
{
Console.WriteLine(cosineTest.Calculate(i));
}
Console.WriteLine("Oopsiepoepsie");
Console.ReadKey();
}