org.encog.mathutil.randomize

Class BasicRandomizer

java.lang.Object

org.encog.mathutil.randomize.BasicRandomizer

All Implemented Interfaces:

Randomizer

Direct Known Subclasses:

ConsistentRandomizer, ConstRandomizer, Distort, FanInRandomizer, GaussianRandomizer, NguyenWidrowRandomizer, RangeRandomizer

public abstract class BasicRandomizer
extends java.lang.Object
implements Randomizer

Provides basic functionality that most randomizers will need.

Constructor Summary

Constructors

Constructor and Description
BasicRandomizer() Construct a random number generator with a random(current time) seed.

Method Summary

Modifier and Type	Method and Description
GenerateRandom	getRandom()
double	nextDouble()
double	nextDouble(double min, double max) Generate a random number in the specified range.
void	randomize(BasicNetwork network, int fromLayer) Randomize one level of a neural network.
void	randomize(double[] d) Randomize the array based on an array, modify the array.
void	randomize(double[][] d) Randomize the 2d array based on an array, modify the array.
void	randomize(double[] d, int begin, int size) Randomize the array based on an array, modify the array.
void	randomize(Matrix m) Randomize the matrix based on an array, modify the array.
void	randomize(MLMethod method) Randomize the synapses and biases in the basic network based on an array, modify the array.
void	setRandom(GenerateRandom theRandom) Explicitly set the Random source

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.encog.mathutil.randomize.Randomizer

randomize

Constructor Detail

BasicRandomizer

public BasicRandomizer()

Construct a random number generator with a random(current time) seed. If you want to set your own seed, just call "getRandom().setSeed".

Method Detail

getRandom

public final GenerateRandom getRandom()

Specified by:

getRandom in interface Randomizer

Returns:

The random number generator in use. Use this to set the seed, if desired.

nextDouble

public final double nextDouble()

Returns:

The next double.

nextDouble

public final double nextDouble(double min,
                               double max)

Generate a random number in the specified range.

Parameters:

min - The minimum value.

max - The maximum value.

Returns:

A random number.

randomize

public void randomize(BasicNetwork network,
                      int fromLayer)

Randomize one level of a neural network.

Parameters:

network - The network to randomize

fromLayer - The from level to randomize.

randomize

public void randomize(double[] d)

Randomize the array based on an array, modify the array. Previous values may be used, or they may be discarded, depending on the randomizer.

Specified by:

randomize in interface Randomizer

Parameters:

d - An array to randomize.

randomize

public void randomize(double[] d,
                      int begin,
                      int size)

Randomize the array based on an array, modify the array. Previous values may be used, or they may be discarded, depending on the randomizer.

Specified by:

randomize in interface Randomizer

Parameters:

d - An array to randomize.

begin - The beginning element of the array.

size - The size of the array to copy.

randomize

public void randomize(double[][] d)

Randomize the 2d array based on an array, modify the array. Previous values may be used, or they may be discarded, depending on the randomizer.

Specified by:

randomize in interface Randomizer

Parameters:

d - An array to randomize.

randomize

public void randomize(Matrix m)

Randomize the matrix based on an array, modify the array. Previous values may be used, or they may be discarded, depending on the randomizer.

Specified by:

randomize in interface Randomizer

Parameters:

m - A matrix to randomize.

randomize

public void randomize(MLMethod method)

Randomize the synapses and biases in the basic network based on an array, modify the array. Previous values may be used, or they may be discarded, depending on the randomizer.

Specified by:

randomize in interface Randomizer

Parameters:

method - A network to randomize.

setRandom

public final void setRandom(GenerateRandom theRandom)

Description copied from interface: Randomizer

Explicitly set the Random source

Specified by:

setRandom in interface Randomizer

Parameters:

theRandom - the random to set