org.encog.neural.networks.training.propagation.scg
Class ScaledConjugateGradient

java.lang.Object
  org.encog.neural.networks.training.BasicTraining
      org.encog.neural.networks.training.propagation.Propagation
          org.encog.neural.networks.training.propagation.scg.ScaledConjugateGradient

All Implemented Interfaces:

Train

public class ScaledConjugateGradient
extends Propagation

This is a training class that makes use of scaled conjugate gradient methods. It is a very fast and efficient training algorithm.

Field Summary

protected static double	FIRST_LAMBDA The starting value for lambda.
protected static double	FIRST_SIGMA The starting value for sigma.

Constructor Summary

ScaledConjugateGradient(BasicNetwork network, NeuralDataSet training)
Construct a training class.

Method Summary

void	iteration() Perform one iteration.
void	performIteration(CalculateGradient prop, double[] weights) Not used.

Methods inherited from class org.encog.neural.networks.training.propagation.Propagation

canContinue, getNetwork, getNumThreads, isValidResume, pause, resume, setNumThreads

Methods inherited from class org.encog.neural.networks.training.BasicTraining

addStrategy, finishTraining, getError, getStrategies, getTraining, postIteration, preIteration, setError, setTraining

Methods inherited from class java.lang.Object

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

Field Detail

FIRST_SIGMA

protected static final double FIRST_SIGMA

The starting value for sigma.

See Also:

Constant Field Values

FIRST_LAMBDA

protected static final double FIRST_LAMBDA

The starting value for lambda.

See Also:

Constant Field Values

Constructor Detail

ScaledConjugateGradient

public ScaledConjugateGradient(BasicNetwork network,
                               NeuralDataSet training)

Construct a training class.

Parameters:

network - The network to train.

training - The training data.

Method Detail

iteration

public void iteration()

Perform one iteration.

Specified by:

iteration in interface Train

Overrides:

iteration in class Propagation

performIteration

public void performIteration(CalculateGradient prop,
                             double[] weights)

Not used.

Specified by:

performIteration in class Propagation

Parameters:

prop - Not used.

weights - Not used.