galib::benchmark::RastriginFunction< GeneType > Class Template Reference

Implementation of the Rastrigin function. More...

#include <RastriginFunction.h>

Inheritance diagram for galib::benchmark::RastriginFunction< GeneType >:

Public Member Functions
	RastriginFunction (std::size_t dimensions, GeneType lower_bound, GeneType upper_bound)
	Constructs the Rastrigin function with given dimensions and bounds.
double	evaluate (const std::vector< GeneType > &genotype) const override
	Evaluates the N-dimensional Rastrigin function.
std::size_t	size () const override
	Returns the dimensionality of the optimization problem.
std::string	name () const override
	Short identifier used to select a GPU evaluation kernel.
GeneType	getLowerBound (std::size_t) const override
	Gets the lower bound for a specific dimension.
GeneType	getUpperBound (std::size_t) const override
	Gets the upper bound for a specific dimension.
Public Member Functions inherited from galib::FitnessFunction< GeneType >
virtual	~FitnessFunction ()=default
GeneType	getLowerBound () const
	Convenience method to get the lower bound of the first dimension.
GeneType	getUpperBound () const
	Convenience method to get the upper bound of the first dimension.

Detailed Description

template<typename GeneType = double>
class galib::benchmark::RastriginFunction< GeneType >

Implementation of the Rastrigin function.

A highly multi-modal function with many local minima. Global minimum: f(0, ..., 0) = 0.

Template Parameters

GeneType

The numeric type of the genes.

Definition at line 33 of file RastriginFunction.h.

Constructor & Destructor Documentation

RastriginFunction()

template<typename GeneType = double>

galib::benchmark::RastriginFunction< GeneType >::RastriginFunction ( std::size_t  dimensions, GeneType  lower_bound, GeneType  upper_bound  )

inlineexplicit

Constructs the Rastrigin function with given dimensions and bounds.

Parameters

dimensions	Problem dimensionality.
lower_bound	Uniform lower bound.
upper_bound	Uniform upper bound.

Definition at line 47 of file RastriginFunction.h.

Member Function Documentation

evaluate()

template<typename GeneType = double>

double galib::benchmark::RastriginFunction< GeneType >::evaluate ( const std::vector< GeneType > &  genotype ) const

inlineoverridevirtual

Evaluates the N-dimensional Rastrigin function.

Parameters

genotype

Input vector.

Returns

Fitness value.

Implements galib::FitnessFunction< GeneType >.

Definition at line 55 of file RastriginFunction.h.

getLowerBound()

template<typename GeneType = double>

GeneType galib::benchmark::RastriginFunction< GeneType >::getLowerBound ( std::size_t  dimension ) const

inlineoverridevirtual

Gets the lower bound for a specific dimension.

Parameters

dimension

Index of the dimension.

Returns

Lower bound value.

Implements galib::FitnessFunction< GeneType >.

Definition at line 69 of file RastriginFunction.h.

getUpperBound()

template<typename GeneType = double>

GeneType galib::benchmark::RastriginFunction< GeneType >::getUpperBound ( std::size_t  dimension ) const

inlineoverridevirtual

Gets the upper bound for a specific dimension.

Parameters

dimension

Index of the dimension.

Returns

Upper bound value.

Implements galib::FitnessFunction< GeneType >.

Definition at line 73 of file RastriginFunction.h.

name()

template<typename GeneType = double>

std::string galib::benchmark::RastriginFunction< GeneType >::name ( ) const

inlineoverridevirtual

Short identifier used to select a GPU evaluation kernel.

Override in benchmark subclasses to enable GPU-side evaluation ("Sphere", "Rastrigin", "HeavyTrig"). Return empty string (default) to use the CPU callback path.

Returns

Problem name string, or "" for custom functions.

Reimplemented from galib::FitnessFunction< GeneType >.

Definition at line 67 of file RastriginFunction.h.

size()

template<typename GeneType = double>

std::size_t galib::benchmark::RastriginFunction< GeneType >::size ( ) const

inlineoverridevirtual

Returns the dimensionality of the optimization problem.

Returns

Number of dimensions.

Implements galib::FitnessFunction< GeneType >.

Definition at line 66 of file RastriginFunction.h.

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

• include/benchmarks/RastriginFunction.h