org.simnet.synapses
Class OjaSynapse

java.lang.Object
  org.simnet.interfaces.Synapse
      org.simnet.synapses.OjaSynapse

All Implemented Interfaces:

GaugeSource

public class OjaSynapse
extends Synapse

OjaSynapse is a synapse which asymptotically normalizes the sum of squares of the weights attaching to a neuron to a user-defined value.

Field Summary

Fields inherited from class org.simnet.interfaces.Synapse

id, increment, lowerBound, NUM_PARAMETERS, source, spikeResponder, strength, target, upperBound

Constructor Summary

OjaSynapse()
Default constructor needed for external calls which create neurons then set their parameters.

OjaSynapse(Neuron source, Neuron target)
Creates a weight connecting source and target neurons.

OjaSynapse(Neuron src, Neuron tar, double val, String theId)
Creates a weight of some value connecting two neurons.

OjaSynapse(Synapse s)
This constructor is used when creating a neuron of one type from another neuron of another type Only values common to different types of neuron are copied.

Method Summary

Synapse	duplicate()
double	getLearningRate()
static String	getName()
double	getNormalizationFactor()
void	setLearningRate(double momentum)
void	setNormalizationFactor(double normalizationFactor)
void	update() Updates the synapse.

Methods inherited from class org.simnet.interfaces.Synapse

checkBounds, clip, decrementWeight, duplicate, getDelay, getGaugeValue, getId, getIncrement, getLowerBound, getParent, getSource, getSpikeResponder, getStrength, getSynapseTypeIndex, getTarget, getType, getTypeList, getUpperBound, getValue, incrementWeight, init, initSpikeResponder, randomize, reinforce, setDelay, setId, setIncrement, setLowerBound, setParent, setSource, setSpikeResponder, setStrength, setTarget, setUpperBound, toString, weaken

Methods inherited from class java.lang.Object

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

Constructor Detail

OjaSynapse

public OjaSynapse(Neuron src,
                  Neuron tar,
                  double val,
                  String theId)

Creates a weight of some value connecting two neurons.

Parameters:

src - source neuron

tar - target neuron

val - initial weight value

theId - Id of the synapse

OjaSynapse

public OjaSynapse()

Default constructor needed for external calls which create neurons then set their parameters.

OjaSynapse

public OjaSynapse(Synapse s)

This constructor is used when creating a neuron of one type from another neuron of another type Only values common to different types of neuron are copied.

Parameters:

s - Synapse to make of the type

OjaSynapse

public OjaSynapse(Neuron source,
                  Neuron target)

Creates a weight connecting source and target neurons.

Parameters:

source - source neuron

target - target neuron

Method Detail

getName

public static String getName()

Returns:

Name of synapse type.

duplicate

public Synapse duplicate()

Specified by:

duplicate in class Synapse

Returns:

duplicate OjaSynapse (used, e.g., in copy/paste).

update

public void update()

Updates the synapse.

Specified by:

update in class Synapse

getLearningRate

public double getLearningRate()

Returns:

Returns the momentum.

setLearningRate

public void setLearningRate(double momentum)

Parameters:

momentum - The momentum to set.

getNormalizationFactor

public double getNormalizationFactor()

Returns:

Returns the normalizationFactor.

setNormalizationFactor

public void setNormalizationFactor(double normalizationFactor)

Parameters:

normalizationFactor - The normalizationFactor to set.