STK::MixtureComposerFixedProp Class Reference

specialization of the composer for the fixed proportion case. More...

#include <STK_MixtureComposer.h>

Inheritance diagram for STK::MixtureComposerFixedProp:

Public Member Functions
	MixtureComposerFixedProp (int nbSample, int nbCluster)
	Constructor.
	MixtureComposerFixedProp (MixtureComposer const &model)
	copy constructor.
virtual	~MixtureComposerFixedProp ()
	destructor
virtual MixtureComposerFixedProp *	create () const
	Create a composer, but reinitialize the mixtures parameters.
virtual MixtureComposerFixedProp *	clone () const
	Create a clone of the current model, with mixtures parameters preserved.
virtual void	pStep ()
	overloading of the computePropotions() method.
Public Member Functions inherited from STK::MixtureComposer
	MixtureComposer (int nbSample, int nbCluster)
	Constructor.
	MixtureComposer (MixtureComposer const &composer)
	copy constructor.
virtual	~MixtureComposer ()
	The registered mixtures will be deleted there.
virtual Real	lnComponentProbability (int i, int k) const
virtual void	writeParameters (ostream &os) const
	write the parameters of the model in the stream os.
virtual void	randomInit ()
	initialize randomly the parameters of the components of the model
virtual void	paramUpdateStep ()
	Compute the proportions and the model parameters given the current tik mixture parameters.
virtual void	imputationStep ()
	Impute the missing values.
virtual void	samplingStep ()
	Simulation of all the latent variables and/or missing data excluding class labels.
virtual void	storeIntermediateResults (int iteration)
	This step can be used to signal to the mixtures that they must store results.
virtual void	releaseIntermediateResults ()
	This step can be used to signal to the mixtures that they must release the stored results.
virtual void	setParametersStep ()
	Utility method allowing to signal to a mixture to set its parameters.
virtual void	finalizeStep ()
	This step can be used by developer to finalize any thing.
Public Member Functions inherited from STK::IMixtureComposer
virtual	~IMixtureComposer ()
	destructor
Clust::modelState	state () const
void	setState (Clust::modelState state)
	set the state of the model : should be used by any strategy
virtual int	cStep ()
	Replace tik by zik.
virtual int	sStep ()
	Simulate zi accordingly to tik and replace tik by zik by calling cStep().
virtual Real	eStep ()
	compute the zi, the lnLikelihood of the current estimates and the next value of the tik.
virtual void	mapStep ()
	Compute zi using the Map estimate.
virtual void	initializeStep ()
	Initialize the model before its first use.
void	randomClassInit ()
	Initialize randomly the labels zi of the model.
void	randomFuzzyInit ()
	Initialize randomly the posterior probabilities tik of the model, then compute the zi values with mapStep, compute the initial parameter values using paramUpdateStep, and compute the tik using eStep().
Public Member Functions inherited from STK::IMixtureStatModel
virtual	~IMixtureStatModel ()
	destructor
int	nbCluster () const
CPointX const &	pk () const
CArrayXX const &	tik () const
CPointX const &	tk () const
CVectorXi const &	zi () const
std::vector< IMixture * > const &	v_mixtures () const
Real	computeLnLikelihood (int i) const
Real	computeLikelihood (int i) const
Real	computeLnLikelihood () const
Real	computeICL () const
IMixture *	getMixture (String const &idData) const
	Utility lookup function allowing to find a Mixture from its idData.
void	registerMixture (IMixture *p_mixture)
	register a mixture to the composer.
void	releaseMixture (String const &idData)
	release a mixture from the composer.
int	computeNbFreeParameters () const
	compute the number of free parameters of the model.
int	computeNbMissingValues () const
	compute the missing values of the model.
template<class Array >
void	setMixtureParameters (Array const &tik)
	set the mixture parameters using an array of posterior probabilities.
template<class Array , class RowVector >
void	setMixtureParameters (Array const &tik, RowVector const &pk)
	set the mixture parameters giving the posterior probabilities and the proportions.
template<class RowVector >
void	setProportions (RowVector const &pk)
	Set proportions of each classes.
template<class Manager , class Parameters >
void	setParameters (IMixtureManager< Manager > const &manager, String const &idData, Parameters const &param)
	Utility method allowing to set the parameters to a specific mixture.
template<class Manager >
void	createMixture (IMixtureManager< Manager > &manager)
	Utility method allowing to create all the mixtures registered in the data handler of a mixture manager and to register them.
template<class Manager >
IMixture *	createMixture (IMixtureManager< Manager > &manager, String const &idData)
	Utility method allowing to create a mixture with a given data set and register it.
template<class Manager >
void	removeMixture (IMixtureManager< Manager > &manager, String const &idData)
	Utility method allowing to release completely a mixture with its data set.
template<class Manager , class Parameters >
void	getParameters (IMixtureManager< Manager > const &manager, String const &idData, Parameters &param) const
	Utility method allowing to get the parameters of a specific mixture.
template<class Manager , class MissingValues >
void	getMissingValues (IMixtureManager< Manager > const &manager, String const &idData, MissingValues &missing) const
	Utility method allowing to get the missing values of a specific mixture.
template<class DataHandler >
void	createMixture (IMixtureManager< DataHandler > &manager)
Public Member Functions inherited from STK::IStatModelBase
int	nbSample () const
Real	lnNbSample () const
int	nbVariable () const
Real	lnLikelihood () const
Real	likelihood () const
int	nbFreeParameter () const
Real	computeBIC () const
Real	computeAIC () const
Real	computeML () const

Additional Inherited Members
Public Types inherited from STK::MixtureComposer
typedef std::vector< IMixture * >::const_iterator	ConstMixtIterator
typedef std::vector< IMixture * >::iterator	MixtIterator
Public Types inherited from STK::IMixtureStatModel
typedef std::vector< IMixture * >::const_iterator	ConstMixtIterator
typedef std::vector< IMixture * >::iterator	MixtIterator
Protected Member Functions inherited from STK::MixtureComposer
void	createComposer (std::vector< IMixture * > const &v_mixtures_)
	Create the composer using existing data handler and mixtures.
Protected Member Functions inherited from STK::IMixtureComposer
	IMixtureComposer (int nbSample, int nbCluster)
	Constructor.
	IMixtureComposer (IMixtureComposer const &model)
	copy constructor.
void	sStep (int i)
	Simulate zi accordingly to tik.
void	cStep (int i)
	Replace tik by zik.
Real	eStep (int i)
	compute one zi and the next value of the tik for i fixed
void	mapStep (int i)
	Compute zi using the Map estimate for i fixed.
virtual void	initializeMixtureParameters ()
	Create the mixture model parameters pk_ and tik_.
virtual int	randomTik ()
	generate random tik_
virtual int	randomZi ()
	generate random zi_
Protected Member Functions inherited from STK::IMixtureStatModel
	IMixtureStatModel (int nbSample, int nbCluster)
	Constructor.
	IMixtureStatModel (IMixtureStatModel const &model)
	copy constructor.
void	setNbCluster (int nbCluster)
	set the number of cluster of the model
Protected Member Functions inherited from STK::IStatModelBase
	IStatModelBase ()
	Default constructor.
	IStatModelBase (int nbSample)
	Constructor with specified dimension.
	IStatModelBase (int nbSample, int nbVariable)
	Constructor with specified dimension.
	IStatModelBase (IStatModelBase const &model)
	Copy constructor.
	~IStatModelBase ()
	destructor
void	setNbFreeParameter (int const &nbFreeParameter)
	set the number of free parameters of the model
void	setNbSample (int const &nbSample)
	set the number of samples of the model
void	setNbVariable (int const &nbVariable)
	set the number of variables of the model
void	setLnLikelihood (Real const &lnLikelihood)
	set the log-likelihood of the model
void	initialize (int nbSample, int nbVariable)
	set the dimensions of the parameters of the model
Protected Attributes inherited from STK::MixtureComposer
Real	meanlnLikelihood_
	averaged lnLikelihood values.
Protected Attributes inherited from STK::IMixtureStatModel
int	nbCluster_
	number of cluster.
CPointX	pk_
	The proportions of each mixtures.
CArrayXX	tik_
	The tik probabilities.
CPointX	tk_
	The sum of the columns of tik_.
CVectorXi	zi_
	The zi class label.
std::vector< IMixture * >	v_mixtures_
	vector of pointers to the mixtures components

Detailed Description

specialization of the composer for the fixed proportion case.

Definition at line 143 of file STK_MixtureComposer.h.

Constructor & Destructor Documentation

MixtureComposerFixedProp() [1/2]

STK::MixtureComposerFixedProp::MixtureComposerFixedProp	(	int	nbSample,
		int	nbCluster
	)

Constructor.

Parameters

nbCluster,nbSample

number of clusters and samples

Definition at line 204 of file STK_MixtureComposer.cpp.

                                                  : MixtureComposer( nbSample, nbCluster)
{ setNbFreeParameter(0); /* remove the count of the pk parameters */}

References STK::IStatModelBase::setNbFreeParameter().

MixtureComposerFixedProp() [2/2]

STK::MixtureComposerFixedProp::MixtureComposerFixedProp

(

MixtureComposer const &

model

)

copy constructor.

Parameters

model

the model to copy

Definition at line 211 of file STK_MixtureComposer.cpp.

                                                  : MixtureComposer(model) {}

~MixtureComposerFixedProp()

virtual STK::MixtureComposerFixedProp::~MixtureComposerFixedProp ( )

inlinevirtual

destructor

Definition at line 155 of file STK_MixtureComposer.h.

{}

Member Function Documentation

clone()

MixtureComposerFixedProp * STK::MixtureComposerFixedProp::clone ( ) const

virtual

Create a clone of the current model, with mixtures parameters preserved.

Reimplemented from STK::MixtureComposer.

Definition at line 223 of file STK_MixtureComposer.cpp.

{ return new MixtureComposerFixedProp(*this);}

create()

MixtureComposerFixedProp * STK::MixtureComposerFixedProp::create ( ) const

virtual

Create a composer, but reinitialize the mixtures parameters.

Reimplemented from STK::MixtureComposer.

Definition at line 215 of file STK_MixtureComposer.cpp.

{
  MixtureComposerFixedProp* p_composer = new MixtureComposerFixedProp(nbSample(), nbCluster());
  p_composer->createComposer(v_mixtures_);
  p_composer->setNbFreeParameter(p_composer->nbFreeParameter()-(nbCluster()-1));
  return p_composer;
}

References STK::MixtureComposer::createComposer(), STK::IMixtureStatModel::nbCluster(), STK::IStatModelBase::nbFreeParameter(), STK::IStatModelBase::nbSample(), STK::IStatModelBase::setNbFreeParameter(), and STK::IMixtureStatModel::v_mixtures_.

pStep()

void STK::MixtureComposerFixedProp::pStep ( )

virtual

overloading of the computePropotions() method.

Let them initialized to 1/K.

Reimplemented from STK::IMixtureComposer.

Definition at line 228 of file STK_MixtureComposer.cpp.

{}

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

• STK_MixtureComposer.h
• STK_MixtureComposer.cpp