eoOneFifthMutation< EOT > Class Template Reference

the dynamic version: just say it is updatable - and write the update() method! here the 1 fifth rule: count the proportion of successful mutations, and increase sigma if more than threshold (1/5 !) More...

#include <eoNormalMutation.h>

Inheritance diagram for eoOneFifthMutation< EOT >:

List of all members.

Public Types
typedef EOT::Fitness	Fitness
Public Member Functions
	eoOneFifthMutation (eoEvalFunc< EOT > &_eval, double &_sigmaInit, unsigned _windowSize=10, double _updateFactor=0.83, double _threshold=0.2)
	(Default) Constructor.
virtual std::string	className () const
	The class name.
bool	operator() (EOT &_eo)
	Do it! calls the standard mutation, then checks for success and updates stats.
void	update ()
	the method that will be called every generation if the object is added to the checkpoint
Private Attributes
eoEvalFunc< EOT > &	eval
double	threshold
double	updateFactor
std::vector< unsigned >	nbMut
std::vector< unsigned >	nbSuccess
unsigned	genIndex

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Detailed Description

template<class EOT>
class eoOneFifthMutation< EOT >

the dynamic version: just say it is updatable - and write the update() method! here the 1 fifth rule: count the proportion of successful mutations, and increase sigma if more than threshold (1/5 !)

Definition at line 177 of file eoNormalMutation.h.

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Constructor & Destructor Documentation

template<class EOT> eoOneFifthMutation< EOT >::eoOneFifthMutation (  eoEvalFunc< EOT > &  _eval, double &  _sigmaInit, unsigned  _windowSize = 10, double  _updateFactor = 0.83, double  _threshold = 0.2 )  [inline]

(Default) Constructor. Parameters: eval  the evaluation function, needed to recompute the fitmess _sigmaInit  the initial value for uniform mutation _windowSize  the size of the window for statistics _threshold  the threshold (the 1/5 - 0.2) _updateFactor  multiplicative update factor for sigma Definition at line 195 of file eoNormalMutation.h.

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Member Function Documentation

template<class EOT> bool eoOneFifthMutation< EOT >::operator() (  EOT &  _eo  )  [inline, virtual]

Do it! calls the standard mutation, then checks for success and updates stats. Parameters: _eo  The chromosome undergoing the mutation Reimplemented from eoNormalMutation< EOT >. Definition at line 216 of file eoNormalMutation.h. References EO< F >::fitness(), EO< F >::invalid(), EO< F >::invalidate(), and eoNormalMutation< EOT >::operator()().

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

• eoNormalMutation.h

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