sgpp::optimization::test_problems::TestVectorFunction Class Reference

Base class for analytical constraint function examples ("test functions"). More...

#include <TestVectorFunction.hpp>

Inheritance diagram for sgpp::optimization::test_problems::TestVectorFunction:

Public Member Functions
void	eval (const base::DataVector &x, base::DataVector &value) override
	Evaluate displaced function. More...
virtual void	evalUndisplaced (const base::DataVector &x, base::DataVector &value)=0
	Pure virtual method for evaluating the undisplaced function. More...
const base::DataVector &	getDisplacement () const
void	setDisplacement (const base::DataVector &displacement)
	TestVectorFunction (size_t d, size_t m)
	Constructor. More...
	~TestVectorFunction () override
	Destructor. More...
Public Member Functions inherited from sgpp::optimization::VectorFunction
virtual void	clone (std::unique_ptr< VectorFunction > &clone) const =0
	Pure virtual method for cloning the function. More...
size_t	getNumberOfComponents () const
size_t	getNumberOfParameters () const
	VectorFunction (size_t d, size_t m)
	Constructor. More...
virtual	~VectorFunction ()
	Destructor. More...

Protected Attributes
base::DataVector	displacement
	displacement vector More...
base::DataVector	xTmp
	temporary vector for displacing More...
Protected Attributes inherited from sgpp::optimization::VectorFunction
size_t	d
	dimension of the domain More...
size_t	m
	number of components More...

Detailed Description

Base class for analytical constraint function examples ("test functions").

This class differs from VectorFunction in the way that evaluation point \(\vec{x}\) are pseudorandomly displaced when calling the eval() function. Evaluting the undisplaced function must be implemented in evalUndisplaced. The displaced function is \(\vec{x} \mapsto \vec{f}(\vec{x} + \vec{d})\) for a vector \(\vec{d}\) ("displacement").

Constructor & Destructor Documentation

TestVectorFunction()

sgpp::optimization::test_problems::TestVectorFunction::TestVectorFunction	(	size_t	d,
		size_t	m
	)

Constructor.

The displacement is set to all zeros, so to displace the function call generateDisplacement() afterwards.

Parameters

d	dimension of the domain
m	number of components

~TestVectorFunction()

sgpp::optimization::test_problems::TestVectorFunction::~TestVectorFunction ( )

override

Destructor.

Member Function Documentation

eval()

void sgpp::optimization::test_problems::TestVectorFunction::eval ( const base::DataVector &  x, base::DataVector &  value  )

overridevirtual

Evaluate displaced function.

Parameters

	x	point \(\vec{x} \in \mathbb{R}^d\)
[out]	value	\(\vec{f}(\vec{x} + \vec{d})\) with displacement \(\vec{d}\)

Implements sgpp::optimization::VectorFunction.

References sgpp::optimization::VectorFunction::d, displacement, evalUndisplaced(), and xTmp.

evalUndisplaced()

virtual void sgpp::optimization::test_problems::TestVectorFunction::evalUndisplaced ( const base::DataVector &  x, base::DataVector &  value  )

pure virtual

Pure virtual method for evaluating the undisplaced function.

Parameters

	x	point \(\vec{x} \in \mathbb{R}^d\)
[out]	value	\(\vec{f}(\vec{x})\)

Implemented in sgpp::optimization::test_problems::G04EqualityConstraint, sgpp::optimization::test_problems::G05EqualityConstraint, sgpp::optimization::test_problems::G09EqualityConstraint, sgpp::optimization::test_problems::G10EqualityConstraint, sgpp::optimization::test_problems::G03EqualityConstraint, sgpp::optimization::test_problems::FloudasEqualityConstraint, sgpp::optimization::test_problems::G08EqualityConstraint, sgpp::optimization::test_problems::G13EqualityConstraint, sgpp::optimization::test_problems::G06EqualityConstraint, sgpp::optimization::test_problems::G12EqualityConstraint, sgpp::optimization::test_problems::SimionescuEqualityConstraint, sgpp::optimization::test_problems::G11EqualityConstraint, sgpp::optimization::test_problems::SolandEqualityConstraint, sgpp::optimization::test_problems::G04InequalityConstraint, sgpp::optimization::test_problems::G09InequalityConstraint, sgpp::optimization::test_problems::G10InequalityConstraint, sgpp::optimization::test_problems::FloudasInequalityConstraint, sgpp::optimization::test_problems::G05InequalityConstraint, sgpp::optimization::test_problems::G08InequalityConstraint, sgpp::optimization::test_problems::G06InequalityConstraint, sgpp::optimization::test_problems::G03InequalityConstraint, sgpp::optimization::test_problems::G12InequalityConstraint, sgpp::optimization::test_problems::SimionescuInequalityConstraint, sgpp::optimization::test_problems::G11InequalityConstraint, sgpp::optimization::test_problems::G13InequalityConstraint, and sgpp::optimization::test_problems::SolandInequalityConstraint.

Referenced by eval().

getDisplacement()

const base::DataVector & sgpp::optimization::test_problems::TestVectorFunction::getDisplacement

(

)

const

Returns

currently used displacement

References displacement.

setDisplacement()

void sgpp::optimization::test_problems::TestVectorFunction::setDisplacement

(

const base::DataVector &

displacement

)

Parameters

displacement

currently used displacement

References displacement.

Referenced by sgpp::optimization::test_problems::ConstrainedTestProblem::generateDisplacement(), and sgpp::optimization::test_problems::ConstrainedTestProblem::setDisplacement().

Member Data Documentation

displacement

base::DataVector sgpp::optimization::test_problems::TestVectorFunction::displacement

protected

displacement vector

Referenced by eval(), getDisplacement(), and setDisplacement().

xTmp

base::DataVector sgpp::optimization::test_problems::TestVectorFunction::xTmp

protected

temporary vector for displacing

Referenced by eval().

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

• optimization/src/sgpp/optimization/test_problems/TestVectorFunction.hpp
• optimization/src/sgpp/optimization/test_problems/TestVectorFunction.cpp