latest version v1.9 - last update 24 Nov 2005

lti::modHubertStat Class Reference

Calculates the modified Hubert statistic of the given clustering. More...

#include <ltiClusteringValidity.h>

Inheritance diagram for lti::modHubertStat:

[legend]Collaboration diagram for lti::modHubertStat:

[legend]List of all members.

Public Member Functions
	modHubertStat ()
	modHubertStat (const modHubertStat &other)
virtual	~modHubertStat ()
modHubertStat &	copy (const modHubertStat &other)
modHubertStat &	operator= (const modHubertStat &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 modified Hubert statistic of the given clustering.

When the same data set is tested with different parameters, e.a. with different number of clusters, the best possible clustering is shown by a sharp knee in this index.

This validity measure is not defined for one cluster or if the number of clusters is equal the the number of points

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Constructor & Destructor Documentation

lti::modHubertStat::modHubertStat (   )

standard contructor

lti::modHubertStat::modHubertStat (  const modHubertStat &  other  )

standard contructor

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

destructor

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Member Function Documentation

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

calculates the Dunn 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::modHubertStat::clone (   )  const [virtual]

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

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

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

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

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

modHubertStat& lti::modHubertStat::operator= (  const modHubertStat &  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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