org.encog.neural.rbf

Class RBFNetwork

java.lang.Object

org.encog.ml.BasicML

org.encog.neural.rbf.RBFNetwork

All Implemented Interfaces:

java.io.Serializable, MLEncodable, MLError, MLInput, MLInputOutput, MLMethod, MLOutput, MLProperties, MLRegression, MLResettable, ContainsFlat

public class RBFNetwork
extends BasicML
implements MLError, MLRegression, ContainsFlat, MLResettable, MLEncodable

RBF neural network.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RBFNetwork() Construct RBF network.
RBFNetwork(int inputCount, int hiddenCount, int outputCount, RBFEnum t) Construct RBF network.
RBFNetwork(int inputCount, int outputCount, RadialBasisFunction[] rbf) Construct RBF network.

Method Summary

Modifier and Type	Method and Description
double	calculateError(MLDataSet data) Calculate the error for this neural network.
MLData	compute(MLData input) Compute regression.
void	decodeFromArray(double[] encoded) Decode an array to this object.
int	encodedArrayLength()
void	encodeToArray(double[] encoded) Encode the object to the specified array.
FlatNetwork	getFlat()
int	getInputCount()
int	getOutputCount()
RadialBasisFunction[]	getRBF() Get the RBF's.
void	randomizeRBFCentersAndWidths(double min, double max, RBFEnum t) Set the RBF components to random values.
void	reset() Reset the weights.
void	reset(int seed) Reset the weights with a seed.
void	setRBF(RadialBasisFunction[] rbf) Set the RBF's.
void	setRBFCentersAndWidths(double[][] centers, double[] widths, RBFEnum t) Array containing center position.
void	setRBFCentersAndWidthsEqualSpacing(double minPosition, double maxPosition, RBFEnum t, double volumeNeuronRBFWidth, boolean useWideEdgeRBFs) Equally spaces all hidden neurons within the n dimensional variable space.
void	setRBFFunction(int index, RBFEnum t, double[] centers, double width) Set an RBF function.
void	updateProperties() Update any objeccts when a property changes.

Methods inherited from class org.encog.ml.BasicML

getProperties, getPropertyDouble, getPropertyLong, getPropertyString, setProperty, setProperty, setProperty

Methods inherited from class java.lang.Object

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

Constructor Detail

RBFNetwork

public RBFNetwork()

Construct RBF network.

RBFNetwork

public RBFNetwork(int inputCount,
                  int hiddenCount,
                  int outputCount,
                  RBFEnum t)

Construct RBF network.

Parameters:

inputCount - The input count.

hiddenCount - The hidden count.

outputCount - The output count.

t - The RBF type.

RBFNetwork

public RBFNetwork(int inputCount,
                  int outputCount,
                  RadialBasisFunction[] rbf)

Construct RBF network.

Parameters:

inputCount - The input count.

outputCount - The output count.

rbf - The RBF type.

Method Detail

calculateError

public double calculateError(MLDataSet data)

Calculate the error for this neural network.

Specified by:

calculateError in interface MLError

Parameters:

data - The training set.

Returns:

The error percentage.

compute

public MLData compute(MLData input)

Compute regression.

Specified by:

compute in interface MLRegression

Parameters:

input - The input data.

Returns:

The output data.

getFlat

public FlatNetwork getFlat()

Specified by:

getFlat in interface ContainsFlat

Returns:

The flat network associated with this neural network.

getInputCount

public int getInputCount()

Specified by:

getInputCount in interface MLInput

Returns:

The input.

getOutputCount

public int getOutputCount()

Specified by:

getOutputCount in interface MLOutput

Returns:

The output count.

getRBF

public RadialBasisFunction[] getRBF()

Get the RBF's.

Returns:

The RBF's.

randomizeRBFCentersAndWidths

public void randomizeRBFCentersAndWidths(double min,
                                         double max,
                                         RBFEnum t)

Set the RBF components to random values.

Parameters:

min - Minimum random value.

max - Max random value.

t - The type of RBF to use.

setRBF

public void setRBF(RadialBasisFunction[] rbf)

Set the RBF's.

Parameters:

rbf - The RBF's.

setRBFCentersAndWidths

public void setRBFCentersAndWidths(double[][] centers,
                                   double[] widths,
                                   RBFEnum t)

Array containing center position. Row n contains centers for neuron n. Row n contains x elements for x number of dimensions.

Parameters:

centers - The centers.

widths - Array containing widths. Row n contains widths for neuron n. Row n contains x elements for x number of dimensions.

t - The RBF Function to use for this layer.

setRBFCentersAndWidthsEqualSpacing

public void setRBFCentersAndWidthsEqualSpacing(double minPosition,
                                               double maxPosition,
                                               RBFEnum t,
                                               double volumeNeuronRBFWidth,
                                               boolean useWideEdgeRBFs)

Equally spaces all hidden neurons within the n dimensional variable space.

Parameters:

minPosition - The minimum position neurons should be centered. Typically 0.

maxPosition - The maximum position neurons should be centered. Typically 1

t - The RBF Function to use for this layer.

volumeNeuronRBFWidth - The neuron width of neurons within the mesh.

useWideEdgeRBFs - Enables wider RBF's around the boundary of the neuron mesh.

setRBFFunction

public void setRBFFunction(int index,
                           RBFEnum t,
                           double[] centers,
                           double width)

Set an RBF function.

Parameters:

index - The index to set.

t - The function type.

centers - The centers.

width - The width.

updateProperties

public void updateProperties()

Update any objeccts when a property changes.

Specified by:

updateProperties in interface MLProperties

Specified by:

updateProperties in class BasicML

reset

public void reset()

Reset the weights.

Specified by:

reset in interface MLResettable

reset

public void reset(int seed)

Reset the weights with a seed.

Specified by:

reset in interface MLResettable

Parameters:

seed - The seed value.

encodedArrayLength

public int encodedArrayLength()

Specified by:

encodedArrayLength in interface MLEncodable

Returns:

The length of an encoded array.

encodeToArray

public void encodeToArray(double[] encoded)

Encode the object to the specified array.

Specified by:

encodeToArray in interface MLEncodable

Parameters:

encoded - The array.

decodeFromArray

public void decodeFromArray(double[] encoded)

Decode an array to this object.

Specified by:

decodeFromArray in interface MLEncodable

Parameters:

encoded - The encoded array.