moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT > Class Template Reference

Diversity assignment sheme based on crowding distance proposed in: K. More...

#include <moeoFrontByFrontCrowdingDistanceDiversityAssignment.h>

Inheritance diagram for moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >:

List of all members.

Public Types
typedef MOEOT::ObjectiveVector	ObjectiveVector
	the objective vector type of the solutions
Public Member Functions
void	updateByDeleting (eoPop< MOEOT > &_pop, ObjectiveVector &_objVec)
Private Member Functions
void	setDistances (eoPop< MOEOT > &_pop)
	Sets the distance values.
unsigned int	lastIndex (eoPop< MOEOT > &_pop, unsigned int _start)
	Returns the index of the last individual having the same fitness value than _pop[_start].

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Detailed Description

template<class MOEOT>
class moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >

Diversity assignment sheme based on crowding distance proposed in: K.

Deb, A. Pratap, S. Agarwal, T. Meyarivan, "A Fast and Elitist Multi-Objective Genetic Algorithm: NSGA-II", IEEE Transactions on Evolutionary Computation, vol. 6, no. 2 (2002). Tis strategy assigns diversity values FRONT BY FRONT. It is, for instance, used in NSGA-II.

Definition at line 25 of file moeoFrontByFrontCrowdingDistanceDiversityAssignment.h.

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Member Function Documentation

template<class MOEOT>

void moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >::updateByDeleting	(	eoPop< MOEOT > &	_pop,
		ObjectiveVector &	_objVec
	)			[inline, virtual]

Warning:

NOT IMPLEMENTED, DO NOTHING ! Updates the diversity values of the whole population _pop by taking the deletion of the objective vector _objVec into account.

Parameters:

	_pop	the population
	_objVec	the objective vector

Warning:

NOT IMPLEMENTED, DO NOTHING !

Reimplemented from moeoCrowdingDistanceDiversityAssignment< MOEOT >.

Definition at line 40 of file moeoFrontByFrontCrowdingDistanceDiversityAssignment.h.

template<class MOEOT>

void moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >::setDistances

(

eoPop< MOEOT > &

_pop

)

[inline, private, virtual]

Sets the distance values.

Parameters:

_pop

the population

Reimplemented from moeoCrowdingDistanceDiversityAssignment< MOEOT >.

Definition at line 55 of file moeoFrontByFrontCrowdingDistanceDiversityAssignment.h.

References moeoCrowdingDistanceDiversityAssignment< MOEOT >::inf(), moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >::lastIndex(), and moeoCrowdingDistanceDiversityAssignment< MOEOT >::tiny().

template<class MOEOT>

unsigned int moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >::lastIndex	(	eoPop< MOEOT > &	_pop,
		unsigned int	_start
	)			[inline, private]

Returns the index of the last individual having the same fitness value than _pop[_start].

Parameters:

	_pop	the population
	_start	the index to start from

Definition at line 121 of file moeoFrontByFrontCrowdingDistanceDiversityAssignment.h.

Referenced by moeoFrontByFrontCrowdingDistanceDiversityAssignment< MOEOT >::setDistances().

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

• moeoFrontByFrontCrowdingDistanceDiversityAssignment.h

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