FREE::ES::AsymmetricMutation< TIndividual > Class Template Reference
[Evolutionary strategies]

Mutation component of an ES. More...

#include <freESAsymmetricMutation.h>

Inheritance diagram for FREE::ES::AsymmetricMutation< TIndividual >:

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Collaboration diagram for FREE::ES::AsymmetricMutation< TIndividual >:

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List of all members.

Public Types
typedef AsymmetricMutation < TIndividual >	Self
typedef MutationBase < TIndividual >	Superclass
typedef itk::SmartPointer < Self >	Pointer
typedef itk::SmartPointer < const Self >	ConstPointer
typedef Superclass::IndividualType	IndividualType
typedef IndividualType::Pointer	IndividualPointer
typedef Superclass::PopulationType	PopulationType
typedef PopulationType::Pointer	PopulationPointer
typedef itk::Statistics::AsymmetricVariateGenerator	VariateGeneratorType
Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual const char *	GetNameOfClass () const
void	RegisterStrategicIndividualParameters (IndividualType &individual) const
void	RegisterStrategicPopulationParameters (PopulationType &population) const
void	MutateStrategicPopulationParameters (PopulationType &population) const
void	MutateStrategicIndividualParameters (IndividualType &individual, PopulationType &population) const
double	MutateValue (const double &value)
virtual void	SetGamma (const double _arg)
virtual double	GetGamma ()
virtual void	SetTau (const double _arg)
virtual double	GetTau ()
virtual void	SetTauGlobal (const double _arg)
virtual double	GetTauGlobal ()
virtual void	SetTau_Skewness (const double _arg)
virtual double	GetTau_Skewness ()
virtual void	SetTauGlobal_Skewness (const double _arg)
virtual double	GetTauGlobal_Skewness ()
virtual void	SetMutateValueVariance (const double _arg)
virtual double	GetMutateValueVariance ()
virtual void	SetMutateValueSkewness (const double _arg)
virtual double	GetMutateValueSkewness ()
VariateGeneratorType &	GetRandomGenerator ()
Static Public Member Functions
static Pointer	New (void)
Protected Member Functions
	AsymmetricMutation ()
void	MutateObjectivParameters (IndividualType *pIndividual, PopulationType *pPopulation) const
Protected Attributes
double	m_Gamma
double	m_TauGlobal
double	m_Tau
double	m_TauGlobal_Skewness
double	m_Tau_Skewness
double	m_MutateValueVariance
double	m_MutateValueSkewness
VariateGeneratorType::Pointer	m_RandomGenerator
Private Member Functions
	AsymmetricMutation (Self const &)

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Detailed Description

template<class TIndividual>
class FREE::ES::AsymmetricMutation< TIndividual >

Mutation component of an ES.

Mutates the objective values with an asymmetric distributed variate. The variance and "skewness" of the variate for each objective parameter is stored as strategic parameter. The variance will be mutated by a log-normal distributed variate. The skewness will be mutated by a normal distributed variate. Both will be used to mutate the objective parameters.
z[i] = LN(0,Tau)
z = LN(0,TauGlobal)
v'[i] = v[i] * z * z[i]
z_s[i] = N(0,Tau_Skewness)
z_s = N(0,TauGlobal_Skewness)
s'[i] = s[i] + z_s * z_s[i]
x'[i] = x[i] + AN(0,v'[i],s'[i])

z[i]: log-normal distributed variate (related to the i-th objective parameter for one individual)
z: log-normal distributed variate (related to the i-th objective parameter for the whole population)
v[i]: strategic parameter variance(related to the i-th objective parameter)(before mutation)
v'[i]: strategic parameter variance (related to the i-th objective parameter)(after mutation)
z_s[i]: normal distributed variate (related to the i-th objective parameter for one individual)
z_s: normal distributed variate (related to the i-th objective parameter for the whole population)
s[i]: strategic parameter skewness (related to the i-th objective parameter)(before mutation)
s'[i]: strategic parameter skewness (related to the i-th objective parameter)(after mutation)
x[i]: the i-th objectiv parameter (before mutation)
x'[i]: the i-th objectiv parameter (after mutation)

The asymmetric mutation is based on a work of Hildebrand [1] and implemented using the concept he presented.
[1] L. Hildebrand, Asymmetrische Evolutionsstrategien, Information Technology 46 (2004): 353-355.

Definition at line 69 of file freESAsymmetricMutation.h.

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Member Typedef Documentation

template<class TIndividual>

typedef AsymmetricMutation<TIndividual> FREE::ES::AsymmetricMutation< TIndividual >::Self

Standard "Self" typedef.

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 74 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef MutationBase<TIndividual> FREE::ES::AsymmetricMutation< TIndividual >::Superclass

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 75 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef itk::SmartPointer<Self> FREE::ES::AsymmetricMutation< TIndividual >::Pointer

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 76 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef itk::SmartPointer<const Self> FREE::ES::AsymmetricMutation< TIndividual >::ConstPointer

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 77 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef Superclass::IndividualType FREE::ES::AsymmetricMutation< TIndividual >::IndividualType

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 83 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef IndividualType::Pointer FREE::ES::AsymmetricMutation< TIndividual >::IndividualPointer

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 86 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef Superclass::PopulationType FREE::ES::AsymmetricMutation< TIndividual >::PopulationType

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 87 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef PopulationType::Pointer FREE::ES::AsymmetricMutation< TIndividual >::PopulationPointer

Definition at line 88 of file freESAsymmetricMutation.h.

template<class TIndividual>

typedef itk::Statistics::AsymmetricVariateGenerator FREE::ES::AsymmetricMutation< TIndividual >::VariateGeneratorType

random variate generator type.

Definition at line 116 of file freESAsymmetricMutation.h.

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Constructor & Destructor Documentation

template<class TIndividual>

FREE::ES::AsymmetricMutation< TIndividual >::AsymmetricMutation

(

)

[inline, protected]

Definition at line 36 of file freESAsymmetricMutation.txx.

template<class TIndividual>

FREE::ES::AsymmetricMutation< TIndividual >::AsymmetricMutation

(

Self const &

)

[private]

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Member Function Documentation

template<class TIndividual>

static Pointer FREE::ES::AsymmetricMutation< TIndividual >::New

(

void

)

[inline, static]

Method for creation through the object factory.

Reimplemented from FREE::ES::ComponentBase< TIndividual >.

Definition at line 80 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual ::itk::LightObject::Pointer FREE::ES::AsymmetricMutation< TIndividual >::CreateAnother

(

void

)

const [inline, virtual]

Reimplemented from FREE::ES::ComponentBase< TIndividual >.

Definition at line 80 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual const char* FREE::ES::AsymmetricMutation< TIndividual >::GetNameOfClass

(

)

const [inline, virtual]

Run-time type information (and related methods).

Reimplemented from FREE::ES::MutationBase< TIndividual >.

Definition at line 83 of file freESAsymmetricMutation.h.

template<class TIndividual>

void FREE::ES::AsymmetricMutation< TIndividual >::RegisterStrategicIndividualParameters

(

IndividualType &

individual

)

const [inline]

Definition at line 54 of file freESAsymmetricMutation.txx.

template<class TIndividual>

void FREE::ES::AsymmetricMutation< TIndividual >::RegisterStrategicPopulationParameters

(

PopulationType &

population

)

const [inline, virtual]

Reimplemented from FREE::ES::ComponentBase< TIndividual >.

Definition at line 75 of file freESAsymmetricMutation.txx.

References FREE::ES::Population< TIndividual >::StrategicParameters().

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template<class TIndividual>

void FREE::ES::AsymmetricMutation< TIndividual >::MutateStrategicPopulationParameters

(

PopulationType &

population

)

const [inline, virtual]

Reimplemented from FREE::ES::ComponentBase< TIndividual >.

Definition at line 140 of file freESAsymmetricMutation.txx.

References FREE::ES::Population< TIndividual >::StrategicParameters().

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template<class TIndividual>

void FREE::ES::AsymmetricMutation< TIndividual >::MutateStrategicIndividualParameters	(	IndividualType &	individual,
		PopulationType &	population
	)			const [inline]

Definition at line 102 of file freESAsymmetricMutation.txx.

References FREE::ES::Population< TIndividual >::StrategicParameters().

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template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::MutateValue

(

const double &

value

)

[inline, virtual]

Mutates the passed value, any mutation parameters (if existant) must be set, befor calling this function

Parameters:

value

Value that should be mutated.

Returns:

The mutated value

Implements FREE::ES::MutationBase< TIndividual >.

Definition at line 158 of file freESAsymmetricMutation.txx.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetGamma

(

const double

_arg

)

[inline, virtual]

Definition at line 97 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetGamma

(

)

[inline, virtual]

Definition at line 98 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetTau

(

const double

_arg

)

[inline, virtual]

Definition at line 100 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetTau

(

)

[inline, virtual]

Definition at line 101 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetTauGlobal

(

const double

_arg

)

[inline, virtual]

Definition at line 103 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetTauGlobal

(

)

[inline, virtual]

Definition at line 104 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetTau_Skewness

(

const double

_arg

)

[inline, virtual]

Definition at line 106 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetTau_Skewness

(

)

[inline, virtual]

Definition at line 107 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetTauGlobal_Skewness

(

const double

_arg

)

[inline, virtual]

Definition at line 109 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetTauGlobal_Skewness

(

)

[inline, virtual]

Definition at line 110 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetMutateValueVariance

(

const double

_arg

)

[inline, virtual]

Definition at line 112 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetMutateValueVariance

(

)

[inline, virtual]

Definition at line 113 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual void FREE::ES::AsymmetricMutation< TIndividual >::SetMutateValueSkewness

(

const double

_arg

)

[inline, virtual]

Definition at line 115 of file freESAsymmetricMutation.h.

template<class TIndividual>

virtual double FREE::ES::AsymmetricMutation< TIndividual >::GetMutateValueSkewness

(

)

[inline, virtual]

Definition at line 116 of file freESAsymmetricMutation.h.

template<class TIndividual>

VariateGeneratorType& FREE::ES::AsymmetricMutation< TIndividual >::GetRandomGenerator

(

)

[inline]

Definition at line 120 of file freESAsymmetricMutation.h.

Referenced by FREE::ESAsymmetricMutationController::ActualizeMainComponent().

template<class TIndividual>

void FREE::ES::AsymmetricMutation< TIndividual >::MutateObjectivParameters	(	IndividualType *	pIndividual,
		PopulationType *	pPopulation
	)			const [inline, protected, virtual]

Called by Mutate() to mutate the objective values of an individual

Implements FREE::ES::MutationBase< TIndividual >.

Definition at line 172 of file freESAsymmetricMutation.txx.

References throwExceptionMacro.

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Member Data Documentation

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_Gamma [protected]

Global control parameter

Definition at line 126 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_TauGlobal [protected]

variance for the variate used in the whole generation to mutate the strategic parameter variance. Default value (by Schwefel): 1/sqrt(2*n) ; n = number of objective parameters

Definition at line 131 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_Tau [protected]

variance for the variate used for one individual to mutate the strategic parameter variance. Default value (by Schwefel): 1/sqrt(2*sqrt(n)) ; n = number of objective parameters

Definition at line 135 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_TauGlobal_Skewness [protected]

variance for the variate used in the whole generation to mutate the strategic parameter skewness. Default value (by Schwefel): 1/sqrt(2*n) ; n = number of objective parameters

Definition at line 140 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_Tau_Skewness [protected]

variance for the variate used for one individual to mutate the strategic parameter skewness. Default value (by Schwefel): 1/sqrt(2*sqrt(n)) ; n = number of objective parameters

Definition at line 144 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_MutateValueVariance [protected]

Variance that should be used by MutateValue()

Definition at line 147 of file freESAsymmetricMutation.h.

template<class TIndividual>

double FREE::ES::AsymmetricMutation< TIndividual >::m_MutateValueSkewness [protected]

Skewness that should be used by MutateValue()

Definition at line 149 of file freESAsymmetricMutation.h.

template<class TIndividual>

VariateGeneratorType::Pointer FREE::ES::AsymmetricMutation< TIndividual >::m_RandomGenerator [protected]

Definition at line 151 of file freESAsymmetricMutation.h.

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

• freESAsymmetricMutation.h
• freESAsymmetricMutation.txx

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