Package org.apache.commons.math4.legacy.optim.nonlinear.scalar.noderiv

Class NelderMeadTransform

java.lang.Object

org.apache.commons.math4.legacy.optim.nonlinear.scalar.noderiv.NelderMeadTransform

All Implemented Interfaces:

Simplex.TransformFactory, OptimizationData

public class NelderMeadTransform
extends Object
implements Simplex.TransformFactory

Nelder-Mead method.

Constructor Summary

Constructors

Constructor	Description
NelderMeadTransform()	Transform with default values.
NelderMeadTransform(double alpha, double gamma, double rho, double sigma)

Method Summary

Modifier and Type	Method	Description
UnaryOperator<Simplex>	create(MultivariateFunction evaluationFunction, Comparator<PointValuePair> comparator, DoublePredicate sa)	Creates a simplex transformation.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NelderMeadTransform

public NelderMeadTransform(double alpha,
                           double gamma,
                           double rho,
                           double sigma)

Parameters:

alpha - Reflection coefficient.

gamma - Expansion coefficient.

rho - Contraction coefficient.

sigma - Shrinkage coefficient.

NelderMeadTransform

public NelderMeadTransform()

Transform with default values.

Method Detail

create

public UnaryOperator<Simplex> create(MultivariateFunction evaluationFunction,
                                     Comparator<PointValuePair> comparator,
                                     DoublePredicate sa)

Creates a simplex transformation.

Specified by:

create in interface Simplex.TransformFactory

Parameters:

evaluationFunction - Evaluation function.

comparator - Vertex fitness comparator.

sa - Simulated annealing acceptance test.

Returns:

the simplex transform operator.

toString

public String toString()

Overrides:

toString in class Object