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XuIndexTInstance Class

Implements the Xu-index internal evaluation method proposed in [1] measuring the compactness of clusters given some partition scheme (ClusterSetTInstance). The higher the negative value of the Xu-index, the better the partition in some ClusteringResultTInstance is.
Inheritance Hierarchy
SystemObject
  Aglomera.Evaluation.InternalXuIndexTInstance

Namespace:  Aglomera.Evaluation.Internal
Assembly:  Aglomera (in Aglomera.dll) Version: 1.1.0
Syntax
C#
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public class XuIndex<TInstance> : IInternalEvaluationCriterion<TInstance>
where TInstance : Object, IComparable<TInstance>
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Type Parameters

TInstance
The type of instance considered.

The XuIndexTInstance type exposes the following members.

Constructors
  NameDescription
Public methodXuIndexTInstance
Creates a new XuIndexTInstance with given dissimilarity metric.
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Properties
  NameDescription
Public propertyDissimilarityMetric
Gets the metric used by this criterion to measure the dissimilarity / distance between cluster elements.
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Methods
  NameDescription
Public methodEquals (Inherited from Object.)
Public methodEvaluate
Evaluates the given ClusterSetTInstance partition according to this evaluation criterion.
Protected methodFinalize (Inherited from Object.)
Public methodGetHashCode (Inherited from Object.)
Public methodGetType (Inherited from Object.)
Protected methodMemberwiseClone (Inherited from Object.)
Public methodToString (Inherited from Object.)
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Remarks
Notes: - In the original formulation in [1] the value was minimized, hence this implementation returns the negative Xu-index ratio. References: [1] - Xu, L. (1997). Bayesian Ying–Yang machine, clustering and number of clusters. Pattern Recognition Letters, 18(11), 1167-1178.
See Also