Class of Powell function in 4 dimensions. More...

#include <num_prob_collect/opt/powell4_function.h>

Collaboration diagram for num_prob_collect::opt::powell4_function:

Public Types
using	value_type = double
	Type of function values.

using	variable_type = Eigen::Vector4d
	Type of variables.

Public Member Functions
void	evaluate_on (const Eigen::Vector4d &x)
	Evaluate function value on variable.

auto	gradient () const -> const Eigen::Vector4d &
	Get gradient.

auto	value () const -> const double &
	Get function value.

Private Attributes
Eigen::Vector4d	grad_ {}
	Gradient.

double	value_ {}
	Function value.

Detailed Description

Class of Powell function in 4 dimensions.

This function has no local minimum except for the global one at (0, 0, 0, 0). Search region is [-4, 5] for each dimension.

Reference: http://www-optima.amp.i.kyoto-u.ac.jp/member/student/hedar/Hedar_files/TestGO_files/Page2720.htm

Definition at line 36 of file powell4_function.h.

Member Typedef Documentation

◆ value_type

using num_prob_collect::opt::powell4_function::value_type = double

Type of function values.

Definition at line 42 of file powell4_function.h.

◆ variable_type

using num_prob_collect::opt::powell4_function::variable_type = Eigen::Vector4d

Type of variables.

Definition at line 39 of file powell4_function.h.

Member Function Documentation

◆ evaluate_on()

void num_prob_collect::opt::powell4_function::evaluate_on ( const Eigen::Vector4d & x )

inline

Evaluate function value on variable.

Parameters

[in] x Variable.

Definition at line 49 of file powell4_function.h.

◆ gradient()

auto num_prob_collect::opt::powell4_function::gradient ( ) const -> const Eigen::Vector4d&

inlinenodiscard

Get gradient.

Returns: Gradient.

Definition at line 77 of file powell4_function.h.

◆ value()

auto num_prob_collect::opt::powell4_function::value ( ) const -> const double&

inlinenodiscard

Get function value.

Returns: Function value.

Definition at line 70 of file powell4_function.h.

Member Data Documentation

◆ grad_

Eigen::Vector4d num_prob_collect::opt::powell4_function::grad_ {}

private

Gradient.

Definition at line 86 of file powell4_function.h.

◆ value_

double num_prob_collect::opt::powell4_function::value_ {}

private

Function value.

Definition at line 83 of file powell4_function.h.

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

problems/include/num_prob_collect/opt/powell4_function.h

Public Types

Public Member Functions

Private Attributes