latest version v1.9 - last update 24 Nov 2005

lti::daviesBouldinIndex Class Reference

Calculates the Davies Bouldin Index of the given clustering. More...

#include <ltiClusteringValidity.h>

Inheritance diagram for lti::daviesBouldinIndex:

[legend]Collaboration diagram for lti::daviesBouldinIndex:

[legend]List of all members.

Public Member Functions
	daviesBouldinIndex ()
	daviesBouldinIndex (const daviesBouldinIndex &other)
virtual	~daviesBouldinIndex ()
daviesBouldinIndex &	copy (const daviesBouldinIndex &other)
daviesBouldinIndex &	operator= (const daviesBouldinIndex &other)
virtual const char *	getTypeName () const
virtual functor *	clone () const
virtual bool	apply (const std::vector< dmatrix > &clusteredData, double &index, const dmatrix &centroids) const

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Detailed Description

Calculates the Davies Bouldin Index of the given clustering.

If different clustering, e.a. with different number of clusters, of the same data set are tested, the best will be the clustering with the minimal Davies Bouldin Index.

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Constructor & Destructor Documentation

lti::daviesBouldinIndex::daviesBouldinIndex (   )

standard contructor

lti::daviesBouldinIndex::daviesBouldinIndex (  const daviesBouldinIndex &  other  )

standard contructor

virtual lti::daviesBouldinIndex::~daviesBouldinIndex (   )  [virtual]

destructor

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Member Function Documentation

virtual bool lti::daviesBouldinIndex::apply (  const std::vector< dmatrix > &  clusteredData, double &  index, const dmatrix &  centroids )  const [virtual]

calculates the Davies Bouldin Index of the clustered data. Parameters: clusteredData  std::vector<dmatrix> with the source data. index  the clustering validity result centroids  dmatrix with each row representing a centroid of the corresponding distribution in clusteredData Returns: true if apply successful or false otherwise. Implements lti::clusteringValidity.

virtual functor* lti::daviesBouldinIndex::clone (   )  const [virtual]

returns a pointer to a clone of this functor. Implements lti::functor.

daviesBouldinIndex& lti::daviesBouldinIndex::copy (  const daviesBouldinIndex &  other  )

copy data of "other" functor. Parameters: other  the functor to be copied Returns: a reference to this functor object

virtual const char* lti::daviesBouldinIndex::getTypeName (   )  const [virtual]

returns the name of this type Reimplemented from lti::clusteringValidity.

daviesBouldinIndex& lti::daviesBouldinIndex::operator= (  const daviesBouldinIndex &  other  )

alias for copy member Parameters: other  the functor to be copied Returns: a reference to this functor object

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The documentation for this class was generated from the following file:

• ltiClusteringValidity.h

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