NelderMeadSimplex (Apache Commons Math 3.6.1 API)

java.lang.Object
- org.apache.commons.math3.optimization.direct.AbstractSimplex
- - org.apache.commons.math3.optimization.direct.NelderMeadSimplex

All Implemented Interfaces:

OptimizationData

Deprecated.
As of 3.1 (to be removed in 4.0).
```
@Deprecated
public class NelderMeadSimplex
extends AbstractSimplex
```
This class implements the Nelder-Mead simplex algorithm.

Since:

3.0

Constructor Summary

Constructors
Constructor and Description
`NelderMeadSimplex(double[] steps)` Deprecated. Build a Nelder-Mead simplex with default coefficients.
`NelderMeadSimplex(double[][] referenceSimplex)` Deprecated. Build a Nelder-Mead simplex with default coefficients.
`NelderMeadSimplex(double[][] referenceSimplex, double rho, double khi, double gamma, double sigma)` Deprecated. Build a Nelder-Mead simplex with specified coefficients.
`NelderMeadSimplex(double[] steps, double rho, double khi, double gamma, double sigma)` Deprecated. Build a Nelder-Mead simplex with specified coefficients.
`NelderMeadSimplex(int n)` Deprecated. Build a Nelder-Mead simplex with default coefficients.
`NelderMeadSimplex(int n, double sideLength)` Deprecated. Build a Nelder-Mead simplex with default coefficients.
`NelderMeadSimplex(int n, double rho, double khi, double gamma, double sigma)` Deprecated. Build a Nelder-Mead simplex with specified coefficients.
`NelderMeadSimplex(int n, double sideLength, double rho, double khi, double gamma, double sigma)` Deprecated. Build a Nelder-Mead simplex with specified coefficients.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`iterate(MultivariateFunction evaluationFunction, 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, replaceWorstPoint, setPoint, setPoints

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NelderMeadSimplex
```
public NelderMeadSimplex(int n)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with default coefficients. The default coefficients are 1.0 for rho, 2.0 for khi and 0.5 for both gamma and sigma.
    
    Parameters:
    n - Dimension of the simplex.
  - NelderMeadSimplex
```
public NelderMeadSimplex(int n,
                 double sideLength)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with default coefficients. The default coefficients are 1.0 for rho, 2.0 for khi and 0.5 for both gamma and sigma.
    
    Parameters:
    n - Dimension of the simplex.
    sideLength - Length of the sides of the default (hypercube) simplex. See AbstractSimplex.AbstractSimplex(int,double).
  - NelderMeadSimplex
```
public NelderMeadSimplex(int n,
                 double sideLength,
                 double rho,
                 double khi,
                 double gamma,
                 double sigma)
```
    Deprecated.
    
    Build a Nelder-Mead 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).
    rho - Reflection coefficient.
    khi - Expansion coefficient.
    gamma - Contraction coefficient.
    sigma - Shrinkage coefficient.
  - NelderMeadSimplex
```
public NelderMeadSimplex(int n,
                 double rho,
                 double khi,
                 double gamma,
                 double sigma)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with specified coefficients.
    
    Parameters:
    n - Dimension of the simplex. See AbstractSimplex.AbstractSimplex(int).
    rho - Reflection coefficient.
    khi - Expansion coefficient.
    gamma - Contraction coefficient.
    sigma - Shrinkage coefficient.
  - NelderMeadSimplex
```
public NelderMeadSimplex(double[] steps)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with default coefficients. The default coefficients are 1.0 for rho, 2.0 for khi and 0.5 for both gamma and sigma.
    
    Parameters:
    steps - Steps along the canonical axes representing box edges. They may be negative but not zero. See
  - NelderMeadSimplex
```
public NelderMeadSimplex(double[] steps,
                 double rho,
                 double khi,
                 double gamma,
                 double sigma)
```
    Deprecated.
    
    Build a Nelder-Mead 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[]).
    rho - Reflection coefficient.
    khi - Expansion coefficient.
    gamma - Contraction coefficient.
    sigma - Shrinkage coefficient.
    
    Throws:
    
    IllegalArgumentException - if one of the steps is zero.
  - NelderMeadSimplex
```
public NelderMeadSimplex(double[][] referenceSimplex)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with default coefficients. The default coefficients are 1.0 for rho, 2.0 for khi and 0.5 for both gamma and sigma.
    
    Parameters:
    referenceSimplex - Reference simplex. See AbstractSimplex.AbstractSimplex(double[][]).
  - NelderMeadSimplex
```
public NelderMeadSimplex(double[][] referenceSimplex,
                 double rho,
                 double khi,
                 double gamma,
                 double sigma)
```
    Deprecated.
    
    Build a Nelder-Mead simplex with specified coefficients.
    
    Parameters:
    referenceSimplex - Reference simplex. See AbstractSimplex.AbstractSimplex(double[][]).
    rho - Reflection coefficient.
    khi - Expansion coefficient.
    gamma - Contraction coefficient.
    sigma - Shrinkage 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,
           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.

Class NelderMeadSimplex

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

NelderMeadSimplex

Method Detail

iterate