Roulette wheel selection operator. More...

Inheritance diagram for RouletteWheelSelection:

Public Member Functions
	RouletteWheelSelection ()
	Constructor.

virtual	~RouletteWheelSelection ()
	Destructor.

virtual void	configure (ConfigurationParameters &params, QString prefix)
	Configures the object using the ConfigurationParameters specified.

int	notSelectedForBreeding ()
	Returns the number of individuals which are discarded among those with the lowest fitness.

virtual void	save (ConfigurationParameters &params, QString prefix)
	Saves the actual status of parameters into the ConfigurationParameters object passed.

virtual const Genotype *	select ()
	Select a Genotype.

virtual void	setGenome (const Genome *g)
	Initializes RouletteWheelSelection.

void	setNotSelectedForBreeding (int notSelectedForBreeding)
	Sets the number of individuals which are discarded among those with the lowest fitness.

Public Member Functions inherited from Selection
	Selection ()
	Constructor.

virtual	~Selection ()
	Destructor.

GeneticAlgo *	GA ()
	Return the GeneticAlgo used.

const Genome *	genome () const
	Return the Genome on which it selects.

void	setGA (GeneticAlgo *g)
	Set the GeneticAlgo used.

Public Member Functions inherited from ParameterSettableWithConfigureFunction
void	addObserver (RuntimeParameterObserver *obs)

T	getRuntimeParameter (QString paramName)

virtual ParameterSettableUI *	getUIManager ()

	ParameterSettable ()

virtual void	postConfigureInitialization ()

void	removeObserver (RuntimeParameterObserver *obs)

void	setRuntimeParameter (QString paramName, T newvalue)

QString	typeName () const

Public Member Functions inherited from ParameterSettable
void	addObserver (RuntimeParameterObserver *obs)

T	getRuntimeParameter (QString paramName)

void	removeObserver (RuntimeParameterObserver *obs)

void	setRuntimeParameter (QString paramName, T newvalue)

QString	typeName () const

Static Public Member Functions
static void	describe (QString type)
	Add to Factory::typeDescriptions() the descriptions of all parameters and subgroups.

Protected Attributes
QVector< double >	m_cumulativeFitness
	The vector with cumulative fitness for individuals.

int	m_notSelectedForBreeding
	The number of individuals not selected for reproduction among those with the lowest fitness.

Protected Attributes inherited from Selection
GeneticAlgo *	ga
	GeneticAlgo used.

const Genome *	genomev
	Genome on which it selects Genotypes.

Additional Inherited Members
Public Types inherited from ParameterSettableWithConfigureFunction
enum	Property

Public Attributes inherited from ParameterSettableWithConfigureFunction
	AllowMultiple

	Default

	IsList

	IsMandatory

Static Public Attributes inherited from ParameterSettableWithConfigureFunction
static const double	Infinity

static const int	MaxInteger

static const int	MinInteger

Protected Member Functions inherited from ParameterSettableWithConfigureFunction
void	notifyChangesToParam (QString paramName)

Static Protected Member Functions inherited from ParameterSettableWithConfigureFunction
static Descriptor	addTypeDescription (QString type, QString shortHelp, QString longHelp=QString(""))

static void	setGraphicalEditor (QString type)

Detailed Description

Roulette wheel selection operator.

Description: This class implements the roulette wheel selection scheme: each indivual has a probability of being selected for reproduction which is proportional to its fitness. It is possible to exclude from selection the individuals with the lowest fitness (the exact number is configurable)

Warnings

Definition at line 40 of file roulettewheelselection.h.

Constructor & Destructor Documentation

RouletteWheelSelection ( )

Constructor.

Definition at line 28 of file roulettewheelselection.cpp.

~RouletteWheelSelection ( )

virtual

Destructor.

Definition at line 35 of file roulettewheelselection.cpp.

Member Function Documentation

void configure	(	ConfigurationParameters &	params,
		QString	prefix
	)

virtual

Configures the object using the ConfigurationParameters specified.

Parameters

params	the object with configuration parameters
prefix	the group in which parameters are expected to be (this is terminated by a separator character). We expect to receive as prefix the group with selection parameters

Implements ParameterSettableWithConfigureFunction.

Definition at line 73 of file roulettewheelselection.cpp.

References ConfigurationParameters::getValue(), and RouletteWheelSelection::m_notSelectedForBreeding.

void describe ( QString type )

static

Add to Factory::typeDescriptions() the descriptions of all parameters and subgroups.

Definition at line 84 of file roulettewheelselection.cpp.

References ParameterSettableWithConfigureFunction::addTypeDescription(), ParameterSettable::Descriptor::describeInt(), ParameterSettable::IntDescriptor::help(), and ParameterSettable::IntDescriptor::limits().

int notSelectedForBreeding ( )

Returns the number of individuals which are discarded among those with the lowest fitness.

Definition at line 68 of file roulettewheelselection.cpp.

References RouletteWheelSelection::m_notSelectedForBreeding.