double GetCentroidMinDistance(Song song, List <Song> centroids, IDistanceFunc distanceFunc)
{
double minDistance = distanceFunc.GetDistance(song, centroids[0]);
for (int centroidIndex = 0; centroidIndex < centroids.Count; centroidIndex++)
{
minDistance = Math.Min(minDistance, distanceFunc.GetDistance(song, centroids[centroidIndex]));
}
return(minDistance);
}
void AnalyzeInterClusterDistance()
{
List <Song> centroids = Model.Centroids;
int clustersCount = centroids.Count;
if (clustersCount == 0)
{
throw new ArgumentException("No clusters.");
}
const string id = "centroids_center";
Song centroidsCenter = centroids[0].CloneCleared(id);
for (int i = 1; i < clustersCount; i++)
{
Song centroid = centroids[i];
centroidsCenter.Add(centroid);
}
centroidsCenter.Divide(clustersCount);
IDistanceFunc distanceFunc = Model.DistanceFunc;
InterClusterMeanDistance = 0.0;
foreach (Song centroid in centroids)
{
InterClusterMeanDistance += distanceFunc.GetDistance(centroid, centroidsCenter);
}
InterClusterMeanDistance /= clustersCount;
}