org.apache.commons.math3.optimization.direct

Class MultiDirectionalSimplex

java.lang.Object

org.apache.commons.math3.optimization.direct.AbstractSimplex

org.apache.commons.math3.optimization.direct.MultiDirectionalSimplex

All Implemented Interfaces:

OptimizationData

Deprecated.

As of 3.1 (to be removed in 4.0).

@Deprecated
public class MultiDirectionalSimplex
extends AbstractSimplex

This class implements the multi-directional direct search method.

Since:

3.0

Constructor Summary

Constructors

Constructor and Description
MultiDirectionalSimplex(double[] steps) Deprecated. Build a multi-directional simplex with default coefficients.
MultiDirectionalSimplex(double[][] referenceSimplex) Deprecated. Build a multi-directional simplex with default coefficients.
MultiDirectionalSimplex(double[][] referenceSimplex, double khi, double gamma) Deprecated. Build a multi-directional simplex with specified coefficients.
MultiDirectionalSimplex(double[] steps, double khi, double gamma) Deprecated. Build a multi-directional simplex with specified coefficients.
MultiDirectionalSimplex(int n) Deprecated. Build a multi-directional simplex with default coefficients.
MultiDirectionalSimplex(int n, double sideLength) Deprecated. Build a multi-directional simplex with default coefficients.
MultiDirectionalSimplex(int n, double khi, double gamma) Deprecated. Build a multi-directional simplex with specified coefficients.
MultiDirectionalSimplex(int n, double sideLength, double khi, double gamma) Deprecated. Build a multi-directional simplex with specified coefficients.

Method Summary

Modifier and Type	Method and Description
void	iterate(MultivariateFunction evaluationFunction, java.util.Comparator<PointValuePair> comparator) Deprecated. Compute the next simplex of the algorithm.

Methods inherited from class org.apache.commons.math3.optimization.direct.AbstractSimplex

build, evaluate, getDimension, getPoint, getPoints, getSize

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MultiDirectionalSimplex

public MultiDirectionalSimplex(int n)

Deprecated.

Build a multi-directional simplex with default coefficients. The default values are 2.0 for khi and 0.5 for gamma.

Parameters:

n - Dimension of the simplex.

MultiDirectionalSimplex

public MultiDirectionalSimplex(int n,
                               double sideLength)

Deprecated.

Build a multi-directional simplex with default coefficients. The default values are 2.0 for khi and 0.5 for gamma.

Parameters:

n - Dimension of the simplex.

sideLength - Length of the sides of the default (hypercube) simplex. See AbstractSimplex.AbstractSimplex(int,double).

MultiDirectionalSimplex

public MultiDirectionalSimplex(int n,
                               double khi,
                               double gamma)

Deprecated.

Build a multi-directional simplex with specified coefficients.

Parameters:

n - Dimension of the simplex. See AbstractSimplex.AbstractSimplex(int,double).

khi - Expansion coefficient.

gamma - Contraction coefficient.

MultiDirectionalSimplex

public MultiDirectionalSimplex(int n,
                               double sideLength,
                               double khi,
                               double gamma)

Deprecated.

Build a multi-directional simplex with specified coefficients.

Parameters:

n - Dimension of the simplex. See AbstractSimplex.AbstractSimplex(int,double).

sideLength - Length of the sides of the default (hypercube) simplex. See AbstractSimplex.AbstractSimplex(int,double).

khi - Expansion coefficient.

gamma - Contraction coefficient.

MultiDirectionalSimplex

public MultiDirectionalSimplex(double[] steps)

Deprecated.

Build a multi-directional simplex with default coefficients. The default values are 2.0 for khi and 0.5 for gamma.

Parameters:

steps - Steps along the canonical axes representing box edges. They may be negative but not zero. See

MultiDirectionalSimplex

public MultiDirectionalSimplex(double[] steps,
                               double khi,
                               double gamma)

Deprecated.

Build a multi-directional simplex with specified coefficients.

Parameters:

steps - Steps along the canonical axes representing box edges. They may be negative but not zero. See AbstractSimplex.AbstractSimplex(double[]).

khi - Expansion coefficient.

gamma - Contraction coefficient.

MultiDirectionalSimplex

public MultiDirectionalSimplex(double[][] referenceSimplex)

Deprecated.

Build a multi-directional simplex with default coefficients. The default values are 2.0 for khi and 0.5 for gamma.

Parameters:

referenceSimplex - Reference simplex. See AbstractSimplex.AbstractSimplex(double[][]).

MultiDirectionalSimplex

public MultiDirectionalSimplex(double[][] referenceSimplex,
                               double khi,
                               double gamma)

Deprecated.

Build a multi-directional simplex with specified coefficients.

Parameters:

referenceSimplex - Reference simplex. See AbstractSimplex.AbstractSimplex(double[][]).

khi - Expansion coefficient.

gamma - Contraction coefficient.

Throws:

NotStrictlyPositiveException - if the reference simplex does not contain at least one point.

DimensionMismatchException - if there is a dimension mismatch in the reference simplex.

Method Detail

iterate

public void iterate(MultivariateFunction evaluationFunction,
                    java.util.Comparator<PointValuePair> comparator)

Deprecated.

Compute the next simplex of the algorithm.

Specified by:

iterate in class AbstractSimplex

Parameters:

evaluationFunction - Evaluation function.

comparator - Comparator to use to sort simplex vertices from best to worst.