STK::ModelParameters< Clust::Gamma_a_bjk_ > Struct Reference

Structure encapsulating the parameters of a Gamma_a_bjk_ mixture model. More...

#include <STK_GammaParameters.h>

Inheritance diagram for STK::ModelParameters< Clust::Gamma_a_bjk_ >:

Public Member Functions
	ModelParameters (int nbCluster)
	default constructor
	ModelParameters (ModelParameters const &param)
	copy constructor.
	~ModelParameters ()
	destructor
Real const &	shape (int k, int j) const
Real const &	scale (int k, int j) const
void	resize (Range const &range)
	resize and initialize the set of parameter.
void	updateStatistics ()
	update statistics of the parameters.
void	setStatistics ()
	Set the computed statistics.
void	releaseStatistics ()
	Release the computed statistics.
template<class Array >
void	setParameters (ExprBase< Array > const &params)
	Set the parameters of the mixture model.
Public Member Functions inherited from STK::ParametersGammaBase
	ParametersGammaBase (int nbCluster)
	default constructor
	ParametersGammaBase (ParametersGammaBase const &model)
	copy constructor
	~ParametersGammaBase ()
	destructor
ParametersGammaBase &	operator= (ParametersGammaBase const &other)
	copy operator
void	resize (Range const &range)

Public Attributes
Real	shape_
	shape of the variables
Array1D< CPointX >	scale_
	scales of the variables
Stat::Online< Real, Real >	stat_shape_
	shape statistics
Array1D< Stat::Online< CPointX, Real > >	stat_scale_
	Array of the scale statistics.
Public Attributes inherited from STK::ParametersGammaBase
Array1D< CPointX >	mean_
	mean for each class
Array1D< CPointX >	meanLog_
	log-means for each class
Array1D< CPointX >	variance_
	variance for each class

Detailed Description

Structure encapsulating the parameters of a Gamma_a_bjk_ mixture model.

Definition at line 74 of file STK_GammaParameters.h.

Constructor & Destructor Documentation

ModelParameters() [1/2]

STK::ModelParameters< Clust::Gamma_a_bjk_ >::ModelParameters

(

int

nbCluster

)

default constructor

Parameters

nbCluster

the number of class of the mixture

Definition at line 75 of file STK_GammaParameters.cpp.

              : ParametersGammaBase(nbCluster)
              , shape_(0.), scale_(nbCluster)
              , stat_shape_(), stat_scale_(nbCluster)
{}

ModelParameters() [2/2]

STK::ModelParameters< Clust::Gamma_a_bjk_ >::ModelParameters

(

ModelParameters< Clust::Gamma_a_bjk_ > const &

param

)

copy constructor.

Parameters

param

the parameters to copy.

Definition at line 83 of file STK_GammaParameters.cpp.

               : ParametersGammaBase(param)
               , shape_(param.shape_), scale_(param.scale_)
               , stat_shape_(param.stat_shape_), stat_scale_(param.stat_scale_)
{}

~ModelParameters()

STK::ModelParameters< Clust::Gamma_a_bjk_ >::~ModelParameters

(

)

destructor

Definition at line 89 of file STK_GammaParameters.cpp.

{}

Member Function Documentation

releaseStatistics()

void STK::ModelParameters< Clust::Gamma_a_bjk_ >::releaseStatistics

(

)

Release the computed statistics.

Definition at line 123 of file STK_GammaParameters.cpp.

{
  for(int k=stat_scale_.begin(); k<stat_scale_.end(); ++k)
  { stat_scale_[k].release();}
  stat_shape_.release();
}

resize()

void STK::ModelParameters< Clust::Gamma_a_bjk_ >::resize

(

Range const &

range

)

resize and initialize the set of parameter.

Parameters

range

range of the variables in the data set

Definition at line 92 of file STK_GammaParameters.cpp.

{
  ParametersGammaBase::resize(range);
  shape_ = 1.;
  stat_shape_.release();
  for (int k = scale_.begin(); k< scale_.end(); ++k)
  {
    scale_[k].resize(range) = 1.;
    stat_scale_[k].resize(range);
  }
}

References STK::ParametersGammaBase::resize().

scale()

Real const & STK::ModelParameters< Clust::Gamma_a_bjk_ >::scale ( int  k, int  j  ) const

inline

Returns

the standard deviation of the kth cluster and jth variable

Definition at line 99 of file STK_GammaParameters.h.

{ return scale_[k][j];}

setParameters()

template<class Array >

void STK::ModelParameters< Clust::Gamma_a_bjk_ >::setParameters ( ExprBase< Array > const &  params )

inline

Set the parameters of the mixture model.

It is assumed that the array params store for each class the shapes and scales parameters on two consecutive rows. The number of column of params is the number of variables.

Definition at line 119 of file STK_GammaParameters.h.

    {
      shape_ = 0.;
      for(int k=scale_.begin(), kp= params.beginRows(); k<scale_.end(); ++k, kp+=2)
      {
        shape_ += params.row(kp).mean();
        scale_[k] = params.row(kp+1);
      }
      shape_ /= scale_.size();
    }

setStatistics()

void STK::ModelParameters< Clust::Gamma_a_bjk_ >::setStatistics

(

)

Set the computed statistics.

Definition at line 112 of file STK_GammaParameters.cpp.

{
  for(int k=stat_scale_.begin(); k<stat_scale_.end(); ++k)
  {
    scale_[k] = stat_scale_[k].mean();
    stat_scale_[k].release();
  }
  shape_ = stat_shape_.mean();
  stat_shape_.release();
}

shape()

Real const & STK::ModelParameters< Clust::Gamma_a_bjk_ >::shape ( int  k, int  j  ) const

inline

Returns

the mean of the kth cluster and jth variable

Definition at line 97 of file STK_GammaParameters.h.

{ return shape_;}

updateStatistics()

void STK::ModelParameters< Clust::Gamma_a_bjk_ >::updateStatistics

(

)

update statistics of the parameters.

Definition at line 105 of file STK_GammaParameters.cpp.

{
  for(int k=stat_scale_.begin(); k<stat_scale_.end(); ++k)
  { stat_scale_[k].update(scale_[k]);}
  stat_shape_.update(shape_);
}

Member Data Documentation

scale_

Array1D<CPointX> STK::ModelParameters< Clust::Gamma_a_bjk_ >::scale_

scales of the variables

Definition at line 79 of file STK_GammaParameters.h.

shape_

Real STK::ModelParameters< Clust::Gamma_a_bjk_ >::shape_

shape of the variables

Definition at line 77 of file STK_GammaParameters.h.

stat_scale_

Array1D< Stat::Online<CPointX, Real> > STK::ModelParameters< Clust::Gamma_a_bjk_ >::stat_scale_

Array of the scale statistics.

Definition at line 83 of file STK_GammaParameters.h.

stat_shape_

Stat::Online<Real, Real> STK::ModelParameters< Clust::Gamma_a_bjk_ >::stat_shape_

shape statistics

Definition at line 81 of file STK_GammaParameters.h.

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

• STK_GammaParameters.h
• STK_GammaParameters.cpp