org.ddogleg.optimization.wrap

Class CachedNumericalGradientLineFunction

java.lang.Object

org.ddogleg.optimization.wrap.CachedNumericalGradientLineFunction

All Implemented Interfaces:

CoupledDerivative, CoupledGradient, GradientLineFunction, LineSearchFunction

public class CachedNumericalGradientLineFunction
extends java.lang.Object
implements GradientLineFunction

Numerically computes the gradient and line derivative. Results are cached independently for function output, gradient, and line derivative.

Constructor Summary

Constructors

Constructor and Description
CachedNumericalGradientLineFunction(FunctionNtoS function)

Method Summary

Modifier and Type	Method and Description
double	computeDerivative()
double	computeFunction()
void	computeGradient(double[] gradient)
double[]	getCurrentState()
int	getN()
void	setInput(double x)
void	setInput(double[] x)
void	setLine(double[] start, double[] direction)

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedNumericalGradientLineFunction

public CachedNumericalGradientLineFunction(FunctionNtoS function)

Method Detail

setLine

public void setLine(double[] start,
                    double[] direction)

Specified by:

setLine in interface LineSearchFunction

getCurrentState

public double[] getCurrentState()

Specified by:

getCurrentState in interface LineSearchFunction

setInput

public void setInput(double x)

Specified by:

setInput in interface CoupledDerivative

getN

public int getN()

Specified by:

getN in interface CoupledGradient

setInput

public void setInput(double[] x)

Specified by:

setInput in interface CoupledGradient

computeFunction

public double computeFunction()

Specified by:

computeFunction in interface CoupledDerivative

Specified by:

computeFunction in interface CoupledGradient

computeGradient

public void computeGradient(double[] gradient)

Specified by:

computeGradient in interface CoupledGradient

computeDerivative

public double computeDerivative()

Specified by:

computeDerivative in interface CoupledDerivative