public double Calculate(
ISign <double>[] signs,
Region region,
IClusteringCenter <double> center)
{
double[] regionSignsValues = signs.Select(sign => sign.Calculate(region)).ToArray();
double sum = regionSignsValues
.Zip(center.SignsValues, (first, second) => Math.Pow(first - second, 2))
.Sum();
return(Math.Sqrt(sum));
}
public Region[] Distribute(Region[] sourceRegions)
{
InitializeClusterCenters(clustersNumber, signs.Length, sourceRegions);
//InitializeClustersByRegions(clustersNumber, sourceRegions);
bool clustersChanged = true;
while (clustersChanged)
{
foreach (Region region in sourceRegions.Where(r => !r.IsCenter))
{
int newClusterNumber = DetermineClusterNumber(region);
clustersChanged = newClusterNumber != region.Number;
region.Number = newClusterNumber;
}
foreach (IClusteringCenter <double> clusterCenter in clusterCenters)
{
IClusteringCenter <double> center = clusterCenter;
Region[] clustersRegions = sourceRegions
.Where(region => region.Number == center.Number && !region.IsCenter)
.ToArray();
clusterCenter.Recalculate(signs, clustersRegions, centerDeterminingAlgorithm);
foreach (Region region in sourceRegions)
{
region.IsCenter = false;
}
}
}
return(sourceRegions);
}
