This class represents the weighted sum of a finite set of probability density functions. More...

#include <Mixture.h>

Inheritance diagram for pbl::Mixture:

Classes
struct	MixtureStruct

Public Member Functions
void	addComponent (const PDF &pdf, double w)
	Adds a component pdf with given weight. More...

void	clear ()
	Removes all components. More...

Mixture *	clone () const
	Creates a clone of the object. The clone method is cheap since it only copies a pointer. A deep clone will only be created if the original object is modified. More...

int	components () const
	Returns the number of components. More...

const PDF &	getComponent (int i) const
	Returns a reference to the i'th component. More...

double	getLikelihood (const PDF &pdf) const

double	getMaxDensity () const
	NOT IMPLEMENTED FOR MIXTURE. More...

double	getWeight (int i) const
	Returns the weight of the i'th component. More...

	Mixture ()
	Constructs a mixture pdf with no initial components. More...

	Mixture (const Mixture &orig)
	Copy constructor. More...

void	normalizeWeights ()
	Normalizes the weights of all components. More...

Mixture &	operator= (const Mixture &other)
	Assignment operator. The operation is cheap since it only copies a pointer. A deep clone will only be created if the original object is modified. More...

std::string	toString (const std::string &indent="") const
	Represents the Mixture as a string for easier console output. More...

virtual	~Mixture ()
	Destructor. More...

Public Member Functions inherited from pbl::PDF
int	dimensions () const

virtual bool	getExpectedValue (std::string &v) const

virtual bool	getExpectedValue (arma::vec &v) const

	PDF (int dimensions, PDFType type)

	PDF (const PDF &orig)

PDFType	type () const

virtual	~PDF ()

Protected Member Functions
void	cloneStruct ()

Protected Attributes
MixtureStruct *	ptr_

Protected Attributes inherited from pbl::PDF
int	dimensions_

PDFType	type_

Additional Inherited Members
Public Types inherited from pbl::PDF
enum	PDFType { GAUSSIAN, MIXTURE, UNIFORM, DISCRETE, EXACT, HYBRID, UNKNOWN }

Detailed Description

This class represents the weighted sum of a finite set of probability density functions.

Author: Sjoerd van den Dries

Date: December, 2012

Version: 1.0

Definition at line 54 of file Mixture.h.

Constructor & Destructor Documentation

Mixture::Mixture ( )

Constructs a mixture pdf with no initial components.

Definition at line 41 of file Mixture.cpp.

Mixture::Mixture ( const Mixture & orig )

Copy constructor.

Definition at line 44 of file Mixture.cpp.

Mixture::~Mixture ( )

virtual

Destructor.

Definition at line 50 of file Mixture.cpp.

Member Function Documentation

void Mixture::addComponent	(	const PDF &	pdf,
		double	w
	)

Adds a component pdf with given weight.

Parameters

pdf	The component pdf
w	Weight of the component

Definition at line 120 of file Mixture.cpp.

void Mixture::clear ( )

Removes all components.

Definition at line 101 of file Mixture.cpp.

Mixture * Mixture::clone ( ) const

virtual

Creates a clone of the object. The clone method is cheap since it only copies a pointer. A deep clone will only be created if the original object is modified.

Implements pbl::PDF.

Definition at line 76 of file Mixture.cpp.

void Mixture::cloneStruct ( )

protected

Definition at line 80 of file Mixture.cpp.

int Mixture::components ( ) const

Returns the number of components.

Returns: The number of components

Definition at line 116 of file Mixture.cpp.

const PDF & Mixture::getComponent ( int i ) const

Returns a reference to the i'th component.

Parameters

i	Index of the component

Returns: A reference to the i'th component

Definition at line 139 of file Mixture.cpp.

double Mixture::getLikelihood ( const PDF & pdf ) const

virtual

Implements pbl::PDF.

Definition at line 87 of file Mixture.cpp.

double Mixture::getMaxDensity ( ) const

virtual

NOT IMPLEMENTED FOR MIXTURE.

Implements pbl::PDF.

Definition at line 111 of file Mixture.cpp.

double Mixture::getWeight ( int i ) const

Returns the weight of the i'th component.

Parameters

i	Index of the component

Returns: The weight of the i'th component

Definition at line 144 of file Mixture.cpp.

void Mixture::normalizeWeights ( )

Normalizes the weights of all components.

Definition at line 149 of file Mixture.cpp.

Mixture & Mixture::operator= ( const Mixture & other )

Assignment operator. The operation is cheap since it only copies a pointer. A deep clone will only be created if the original object is modified.

Definition at line 60 of file Mixture.cpp.

std::string Mixture::toString ( const std::string & indent = "" ) const

virtual

Represents the Mixture as a string for easier console output.

Note: Should be changed into stream operator <<

Returns: The Gaussian as string

Implements pbl::PDF.

Definition at line 162 of file Mixture.cpp.

Member Data Documentation

MixtureStruct* pbl::Mixture::ptr_

protected

Definition at line 173 of file Mixture.h.

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

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation