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KMeansTData, TDataSumEvaluateDaviesBouldinIndex(FuncTDataSum, TDataSum, Double, Int32) Method

Evaluates the Davies-Bouldin-Index. The exponent q (used to calculate the average distance of the cluster points to their centroid) can be set as parameter.

Namespace: Altaxo.Calc.Clustering
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
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public double EvaluateDaviesBouldinIndex(
	Func<TDataSum, TDataSum, double> distanceFunctionOfClusterMeans,
	int q
)

Parameters

distanceFunctionOfClusterMeans  FuncTDataSum, TDataSum, Double
Function to calculate the Euclidean distance between two cluster centroids.
q  Int32
Order of the moment to calculate the average distance of the cluster points to their centroid. A value of one results in calculating the average (Euclidean) distance, a value of 2 results in the square root of the mean squared distances, etc.

Return Value

Double
The Davies-Bouldin-Index using the exponent q (p is implicitely 2 if distanceFunctionOfClusterMeans returns the Euclidean distance between the cluster centroids).
See Also