opennlp.tools.ml.maxent.quasinewton

Class QNMinimizer.L2RegFunction

java.lang.Object

opennlp.tools.ml.maxent.quasinewton.QNMinimizer.L2RegFunction

All Implemented Interfaces:

Function

Enclosing class:

QNMinimizer

public static class QNMinimizer.L2RegFunction
extends Object
implements Function

L2-regularized objective function

Constructor Summary

Constructors

Constructor and Description
L2RegFunction(Function f, double l2Cost)

Method Summary

Modifier and Type	Method and Description
int	getDimension()
double[]	gradientAt(double[] x)
double	valueAt(double[] x)

Methods inherited from class java.lang.Object

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

Constructor Detail

L2RegFunction

public L2RegFunction(Function f,
                     double l2Cost)

Method Detail

getDimension

public int getDimension()

Specified by:

getDimension in interface Function

valueAt

public double valueAt(double[] x)

Specified by:

valueAt in interface Function

gradientAt

public double[] gradientAt(double[] x)

Specified by:

gradientAt in interface Function