genetiK::gp::Individual Class Reference
[Genetic Programming framework]

Individual: GP-specific Individual. More...

#include <Individual.h>

Inheritance diagram for genetiK::gp::Individual:

[legend]Collaboration diagram for genetiK::gp::Individual:

[legend]List of all members.

Public Member Functions
	Individual (IndividualFactory *individualFactory)
	creates an Individual and generates its tree.
	Individual (const Individual &individual)
	creates a copy of an Individual
virtual	~Individual (void)
	destructor
virtual double	fitness ()=0
	The fitness function.
virtual genetiK::Individual *	copy () const =0
	Copy this individual.
virtual int	mutate (const double mutationProbabilty)
	mutate the individual
virtual int	crossOver (genetiK::Individual *i, genetiK::Individual **child1, genetiK::Individual **child2)
	Cross over.
virtual std::string	toString () const
	outputs the individual.
Protected Member Functions
Gene *	extract (const unsigned int label) const
	Extract a branch.
Gene *	substituteBranch (const unsigned int label, Gene *newSubTree)
	Substitute a branch.
void	setLabels ()
	Sets the labels to all the tree.
unsigned int	getCardinality () const
	Return the cardinality of the tree.
IndividualFactory *	getIndividualFactory () const
	Return the factory which generated this individual.
Gene *	getRoot () const
	Return the root gene of the genetic programming tree.

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Detailed Description

Individual: GP-specific Individual.

This class extends the generic genetiK::Individual. It represents an individual as a gene tree.

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Constructor & Destructor Documentation

genetiK::gp::Individual::Individual (  IndividualFactory *  individualFactory  )

creates an Individual and generates its tree. Parameters: individualFactory  specifies the individualFactory used to generate the tree See also: Individual(const Individual& individual)

genetiK::gp::Individual::Individual (  const Individual &  individual  )

creates a copy of an Individual Parameters: individual  the Individual to be copied See also: Individual(const Individual& individual)

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Member Function Documentation

virtual genetiK::Individual* genetiK::gp::Individual::copy (   )  const [pure virtual]

Copy this individual. copy this Individual. You should override this function in your Individual implementation, and return the appropriate new Individual, possibly, using the copy constructor. See also: Individual(const Individual& individual) Implements genetiK::Individual. Implemented in genetiK::gp::st::Individual.

int genetiK::gp::Individual::crossOver (  genetiK::Individual *  i, genetiK::Individual **  child1, genetiK::Individual **  child2 )  [virtual]

Cross over. Parameters: i  the partner of the cross over. child1  the first child. child2  the second child. Implements genetiK::Individual. Reimplemented in genetiK::gp::st::Individual.

Gene * genetiK::gp::Individual::extract (  const unsigned int  label  )  const [protected]

Extract a branch. Try to find and extract a branch labelled label Parameters: label  the label of the node to be extracted Returns: the extracted node See also: getLabel() gp::Gene::extract( const unsigned int label ) const

virtual double genetiK::gp::Individual::fitness (   )  [pure virtual]

The fitness function. a function that quantifies the optimality of a solution. You should override this function in your Individual implementation, and evaluate your own fitness. Implements genetiK::Individual. Implemented in genetiK::gp::st::Individual.

unsigned int genetiK::gp::Individual::getCardinality (   )  const [protected]

Return the cardinality of the tree. Return the cardinality of the tree. The cardinality of the tree is computed when you call setLabels(). You should call setLabels() before getCardinality(). Returns: the number of all the genes in the tree See also: setLabels()

IndividualFactory * genetiK::gp::Individual::getIndividualFactory (   )  const [protected]

Return the factory which generated this individual. This fuction is used to retrieve the IndividualFactory which generated this individual. The IndividualFactory is needed for the cross-over and mutation. Returns: the number of all the genes in the tree

Gene* genetiK::gp::Individual::getRoot (   )  const [inline, protected]

Return the root gene of the genetic programming tree. Return the root gene of the genetic programming tree. Returns: the root gene

int genetiK::gp::Individual::mutate (  const double  mutationProbabilty  )  [virtual]

mutate the individual Parameters: mutationProbabilty  the probability of the mutation, GP mutate each Individual with this probability. Note that GA mutate each bit with this probability. See also: crossOver( genetiK::Individual* i,genetiK::Individual** child1,genetiK::Individual** child2) Implements genetiK::Individual. Reimplemented in genetiK::gp::st::Individual.

void genetiK::gp::Individual::setLabels (   )  [protected]

Sets the labels to all the tree. Sets the labels to all the tree, and compute the cardinality and the eight of each node. See also: gp::Gene::setLabel()

Gene * genetiK::gp::Individual::substituteBranch (  const unsigned int  label, Gene *  newSubTree )  [protected]

Substitute a branch. Try to find, and substitute a branch. Parameters: label  the label of the node to be extracted newSubTree  the new branch Returns: the old branch, be careful for possible memory leak. See also: getLabel() gp::Gene::substituteBranch( const unsigned int label, Gene* newSubTree )

std::string genetiK::gp::Individual::toString (   )  const [virtual]

outputs the individual. Returns: the representation of the individual. Reimplemented from genetiK::Individual.

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

• devel/genetik/src/gp/Individual.h
• devel/genetik/src/gp/Individual.cpp

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