org.apache.commons.math3.optim.nonlinear.scalar.gradient

Class NonLinearConjugateGradientOptimizer.BracketingStep

java.lang.Object

org.apache.commons.math3.optim.nonlinear.scalar.gradient.NonLinearConjugateGradientOptimizer.BracketingStep

All Implemented Interfaces:

OptimizationData

Enclosing class:

NonLinearConjugateGradientOptimizer

public static class NonLinearConjugateGradientOptimizer.BracketingStep
extends java.lang.Object
implements OptimizationData

The initial step is a factor with respect to the search direction (which itself is roughly related to the gradient of the function).
It is used to find an interval that brackets the optimum in line search.

Since:

3.1

Field Summary

Fields

Modifier and Type	Field and Description
private double	initialStep Initial step.

Constructor Summary

Constructors

Constructor and Description
NonLinearConjugateGradientOptimizer.BracketingStep(double step)

Method Summary

Methods

Modifier and Type	Method and Description
double	getBracketingStep() Gets the initial step.

Methods inherited from class java.lang.Object

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

Field Detail

initialStep

private final double initialStep

Initial step.

Constructor Detail

NonLinearConjugateGradientOptimizer.BracketingStep

public NonLinearConjugateGradientOptimizer.BracketingStep(double step)

Parameters:

step - Initial step for the bracket search.

Method Detail

getBracketingStep

public double getBracketingStep()

Gets the initial step.

Returns:

the initial step.