GentleBoost Class Reference

Multi-Class Gentle-AdaBoost using a One vs All, MAX wins voting scheme. More...

#include <Learn/GentleBoost.H>

Collaboration diagram for GentleBoost:

Public Member Functions
	GentleBoost (int maxTreeSize=1)
std::map< int, std::vector < float > >	predictPDF (const std::vector< std::vector< float > > &data)
	Get PDF map of each class, with a vector of each observation.
int	getMostLikelyClass (const std::map< int, std::vector< float > > &pdf, int index)
	Get the most likely class for a particular index in a set of observations.
std::vector< int >	getMostLikelyClass (const std::map< int, std::vector< float > > &pdf)
	Get the most likely class for a set of observations.
std::vector< int >	predict (const std::vector< std::vector< float > > &data)
	Get most likely class per observation.
void	train (const std::vector< std::vector< float > > &data, const std::vector< int > &labels, int maxIters)
	Train a set of binary (1vsAll) GentleBoost classifiers on the given data.
std::map< int, std::vector< int > >	convertLabels (const std::vector< int > &labels)
	Convert class id labels to binary per class labels.
void	clear ()
	Remove all training.
std::vector< std::vector< float > >	transpose (const std::vector< std::vector< float > > &data)
	Convenience function to transpose the data dimensions, since the ordering is unusual.
void	printAllTrees ()
	Convenience function to print the underlying decision trees for each 1vsAll Classifier.
void	writeAllTrees (std::ostream &outstream)
	Create a string representation of the heirarchy.
void	readAllTrees (std::istream &instream)
	Read a string representation of the heirarchy and build the class.
void	load (std::string file)
	Load a BOOSTed system from a file.
void	save (std::string file)
	Save a BOOSTed system to a file.

Detailed Description

Multi-Class Gentle-AdaBoost using a One vs All, MAX wins voting scheme.

Definition at line 55 of file GentleBoost.H.

Member Function Documentation

void GentleBoost::clear ( )

Remove all training.

std::map< int, std::vector< int > > GentleBoost::convertLabels ( const std::vector< int > & labels )

Convert class id labels to binary per class labels.

Convert per class labels to a set of binary +1/-1 labels for each class.

Definition at line 207 of file GentleBoost.C.

Referenced by train().

std::vector< int > GentleBoost::getMostLikelyClass ( const std::map< int, std::vector< float > > & pdf )

Get the most likely class for a set of observations.

Definition at line 100 of file GentleBoost.C.

References ASSERT, and getMostLikelyClass().

int GentleBoost::getMostLikelyClass	(	const std::map< int, std::vector< float > > &	pdf,
		int	index
	)

Get the most likely class for a particular index in a set of observations.

Definition at line 81 of file GentleBoost.C.

References ASSERT.

Referenced by getMostLikelyClass(), and predict().

void GentleBoost::load ( std::string file )

Load a BOOSTed system from a file.

Definition at line 199 of file GentleBoost.C.

References in, and readAllTrees().

Referenced by GentleBoostComponent::start2().

std::vector< int > GentleBoost::predict ( const std::vector< std::vector< float > > & data )

Get most likely class per observation.

Definition at line 114 of file GentleBoost.C.

References getMostLikelyClass(), and predictPDF().

std::map< int, std::vector< float > > GentleBoost::predictPDF ( const std::vector< std::vector< float > > & data )

Get PDF map of each class, with a vector of each observation.

Definition at line 68 of file GentleBoost.C.

References ASSERT.

Referenced by predict().

void GentleBoost::printAllTrees ( )

Convenience function to print the underlying decision trees for each 1vsAll Classifier.

Definition at line 132 of file GentleBoost.C.

void GentleBoost::readAllTrees ( std::istream & instream )

Read a string representation of the heirarchy and build the class.

Definition at line 155 of file GentleBoost.C.

Referenced by load().

void GentleBoost::save ( std::string file )

Save a BOOSTed system to a file.

Definition at line 193 of file GentleBoost.C.

References writeAllTrees().

void GentleBoost::train	(	const std::vector< std::vector< float > > &	data,
		const std::vector< int > &	labels,
		int	maxIters
	)

Train a set of binary (1vsAll) GentleBoost classifiers on the given data.

Definition at line 121 of file GentleBoost.C.

References convertLabels().

std::vector< std::vector< float > > GentleBoost::transpose ( const std::vector< std::vector< float > > & data )

Convenience function to transpose the data dimensions, since the ordering is unusual.

Definition at line 52 of file GentleBoost.C.

void GentleBoost::writeAllTrees ( std::ostream & outstream )

Create a string representation of the heirarchy.

Definition at line 142 of file GentleBoost.C.

References sformat().

Referenced by save().

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

src/Learn/GentleBoost.H
src/Learn/GentleBoost.C

GentleBoost Class Reference

Public Member Functions

Detailed Description

Member Function Documentation