Purple::RastriginFunction Class Reference

Inheritance diagram for Purple::RastriginFunction:

List of all members.

Public Member Functions
	RastriginFunction (void)
virtual	~RastriginFunction (void)
double	getEvaluation (Vector< double >)
Vector< double >	getGradient (Vector< double >)
Matrix< double >	getHessian (Vector< double >)
Matrix< double >	getInverseHessian (Vector< double >)

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Detailed Description

This class represents the Rastrigin's objective function.

See also:

ObjectiveFunction.

Definition at line 26 of file RastriginFunction.h.

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Constructor & Destructor Documentation

Purple::RastriginFunction::RastriginFunction

(

void

)

General constructor. It creates a Rastrigin's objective function object. It also initializes all the rest of class members to their default values:

• Number of variables = 2.
• Lower bound = -5.12,...,-5.12.
• Upper bound = 5.12,...,5.12.

Definition at line 34 of file RastriginFunction.cpp.

Purple::RastriginFunction::~RastriginFunction

(

void

)

[virtual]

Destructor.

Definition at line 52 of file RastriginFunction.cpp.

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Member Function Documentation

double Purple::RastriginFunction::getEvaluation

(

Vector< double >

argument

)

[virtual]

This method returns the Rastrigin's function evaluation for a given argument.

Parameters:

argument,:

Objective function argument.

Implements Purple::ObjectiveFunction.

Definition at line 66 of file RastriginFunction.cpp.

Vector< double > Purple::RastriginFunction::getGradient

(

Vector< double >

argument

)

[virtual]

This method returns the De Jong's analytical gradient Vector for a given argument.

Parameters:

argument,:

Point at which the gradient is to be computed.

Reimplemented from Purple::ObjectiveFunction.

Definition at line 103 of file RastriginFunction.cpp.

Matrix< double > Purple::RastriginFunction::getHessian

(

Vector< double >

argument

)

[virtual]

This method returns the Rosenbrock's analytical Hessian Matrix for a given argument.

Parameters:

argument,:

Point at which the Hessian is to be computed.

Reimplemented from Purple::ObjectiveFunction.

Definition at line 125 of file RastriginFunction.cpp.

Matrix< double > Purple::RastriginFunction::getInverseHessian

(

Vector< double >

argument

)

[virtual]

This method returns the Rastrigin's analytical inverse Hessian Matrix for a given argument.

Parameters:

argument,:

Point at which the inverse Hessian is to be computed.

Reimplemented from Purple::ObjectiveFunction.

Definition at line 157 of file RastriginFunction.cpp.

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