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Linkage Class

Class Linkage provides functions for computing the distance between clusters of objects.
Inheritance Hierarchy
SystemObject
  CenterSpace.NMath.CoreLinkage

Namespace:  CenterSpace.NMath.Core
Assembly:  NMath (in NMath.dll) Version: 7.3
Syntax
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public class Linkage

The Linkage type exposes the following members.

Constructors
  NameDescription
Public methodLinkage
Initializes a new instance of the Linkage class
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Methods
  NameDescription
Public methodStatic memberCentroidLinkage
Computes the distance between two clusters as the difference between centroids.
Public methodStatic memberCompleteLinkage
Computes the distance between two clusters as the greatest distance between any two objects in the different clusters (furthest neighbors).
Public methodStatic memberMedianLinkage
Computes the distance between two clusters as the difference between centroids, using the size of each cluster as a weighting factor.
Public methodStatic memberSingleLinkage
Computes the distance between two clusters as the distance of the two closest objects (nearest neighbors) in the clusters.
Public methodStatic memberUnweightedAverageLinkage
Computes the distance between two clusters as the average distance between all pairs of objects in the two different clusters.
Public methodStatic memberWardLinkage
Computes the distance between two clusters using Ward's method.
Public methodStatic memberWeightedAverageLinkage
Computes the distance between two clusters as the average distance between all pairs of objects in the two different clusters, using the size of each cluster as a weighting factor.
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Fields
  NameDescription
Public fieldStatic memberCentroidFunction
Centroid linkage function. Encapsulates Linkage.CentroidLinkage as a Linkage.Function delegate.
Public fieldStatic memberCompleteFunction
Complete (farthest-neighbor) linkage function. Encapsulates Linkage.CompleteLinkage as a Linkage.Function delegate.
Public fieldStatic memberMedianFunction
Median linkage function. Encapsulates Linkage.MedianLinkage as a Linkage.Function delegate.
Public fieldStatic memberSingleFunction
Single (nearest-neighbor) linkage function. Encapsulates Linkage.SingleLinkage as a Linkage.Function delegate.
Public fieldStatic memberUnweightedAverageFunction
Unweighted average linkage function. Encapsulates Linkage.UnweightedAverageLinkage as a Linkage.Function delegate.
Public fieldStatic memberWardFunction
Ward linkage function. Encapsulates Linkage.WardLinkage as a Linkage.Function delegate.
Public fieldStatic memberWeightedAverageFunction
Weighted average linkage function. Encapsulates Linkage.WeightedAverageLinkage as a Linkage.Function delegate.
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Remarks
Instances of delegate type Linkage.Function are used by class ClusterAnalysis to compute the distance between clusters of objects. Delegates are provided as static variables for single, complete, unweighted average, weighted average, centroid, median, and Ward's linkage functions.
See Also