sgpp::optimization::test_problems::RastriginObjective Class Reference

Rastrigin objective function. More...

#include <Rastrigin.hpp>

Inheritance diagram for sgpp::optimization::test_problems::RastriginObjective:

Public Member Functions
void	clone (std::unique_ptr< base::ScalarFunction > &clone) const override
double	evalUndisplaced (const base::DataVector &x) override
	RastriginObjective (size_t d)
	Constructor.
	~RastriginObjective () override
	Destructor.
Public Member Functions inherited from sgpp::optimization::test_problems::TestScalarFunction
double	eval (const base::DataVector &x) override
	Evaluate displaced function.
const base::DataVector &	getDisplacement () const
void	setDisplacement (const base::DataVector &displacement)
	TestScalarFunction (size_t d)
	Constructor.
	~TestScalarFunction () override
	Destructor.
Public Member Functions inherited from sgpp::base::ScalarFunction
virtual void	eval (const DataMatrix &x, DataVector &value)
	Convenience method for calculating \(f(\vec{x})\) for multiple \(\vec{x}\).
size_t	getNumberOfParameters () const
	ScalarFunction (size_t d)
	Constructor.
virtual	~ScalarFunction ()
	Destructor.

Additional Inherited Members
Protected Attributes inherited from sgpp::optimization::test_problems::TestScalarFunction
base::DataVector	displacement
	displacement vector
base::DataVector	xTmp
	temporary vector for displacing
Protected Attributes inherited from sgpp::base::ScalarFunction
size_t	d
	dimension of the domain

Detailed Description

Rastrigin objective function.

Definition:

\[f(\vec{x}) := 10d + \norm{\bar{\vec{x}}}_2^2 - 10 \sum_{t=1}^d \cos(2\pi \bar{x}_t)\]

Constructor & Destructor Documentation

RastriginObjective()

sgpp::optimization::test_problems::RastriginObjective::RastriginObjective ( size_t  d )

explicit

Constructor.

Parameters

d	dimension of the domain

~RastriginObjective()

sgpp::optimization::test_problems::RastriginObjective::~RastriginObjective ( )

override

Destructor.

Member Function Documentation

clone()

void sgpp::optimization::test_problems::RastriginObjective::clone ( std::unique_ptr< base::ScalarFunction > &  clone ) const

overridevirtual

Parameters

[out]

clone

pointer to cloned object

Implements sgpp::base::ScalarFunction.

References clone().

Referenced by clone().

evalUndisplaced()

double sgpp::optimization::test_problems::RastriginObjective::evalUndisplaced ( const base::DataVector &  x )

overridevirtual

Parameters

x	point \(\vec{x} \in [0, 1]^d\)

Returns

\(f(\vec{x})\)

Implements sgpp::optimization::test_problems::TestScalarFunction.

References sgpp::base::ScalarFunction::d, and M_PI.

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

• optimization/src/sgpp/optimization/test_problems/unconstrained/Rastrigin.hpp
• optimization/src/sgpp/optimization/test_problems/unconstrained/Rastrigin.cpp