org.simbrain.network.subnetworks

Class BPTTNetwork

java.lang.Object

org.simbrain.network.groups.Group

org.simbrain.network.groups.Subnetwork

org.simbrain.network.subnetworks.FeedForward

org.simbrain.network.subnetworks.BPTTNetwork

All Implemented Interfaces:

Trainable

public final class BPTTNetwork
extends FeedForward
implements Trainable

Implements a network to be trained using backprop through time.

Author:

Jeff Yoshimi

Constructor Summary

Constructors

Constructor and Description
BPTTNetwork(Network network, int numInputNodes, int numHiddenNodes, int numOutputNodes, java.awt.geom.Point2D initialPosition) Constructor specifying root network, and number of nodes in each layer.

Method Summary

Modifier and Type	Method and Description
NeuronGroup	getHiddenLayer() Returns the hidden layer.
Group	getNetwork() Returns a reference to the subnetwork or synapse group being trained.
int	getStepsPerSequences()
TrainingSet	getTrainingSet() Returns the the training set, which contains input and target data.
java.lang.String	getUpdateMethodDesecription() Returns a description of this group's update method, which is displayed in the update manager panel.
void	initNetwork() Initialize the network.
void	setStepsPerSequences(int stepsPerSequences)
void	update() Update this group.

Methods inherited from class org.simbrain.network.subnetworks.FeedForward

addNeuronGroup, getBetweenLayerInterval, getInputLayer, getInputNeurons, getOutputLayer, getOutputNeurons, setBetweenLayerInterval

Methods inherited from class org.simbrain.network.groups.Subnetwork

addAndLabelSynapseGroup, addRowToTrainingSet, addSynapseGroup, clearActivations, connectNeuronGroups, connectNeuronGroups, connectNeuronGroups, delete, displayNeuronGroups, getEnabled, getFlatNeuronList, getFlatSynapseList, getIndexOfNeuronGroup, getLongDescription, getModifiableNeuronList, getNeuronGroup, getNeuronGroup, getNeuronGroupByLabel, getNeuronGroupCount, getNeuronGroupList, getNeuronGroupsAsList, getSynapseGroup, getSynapseGroup, getSynapseGroupByLabel, getSynapseGroupCount, getSynapseGroupList, isEmpty, recursivelySetIds, removeNeuronGroup, removeSynapseGroup, setDisplayNeuronGroups, setEnabled, size, toString

Methods inherited from class org.simbrain.network.groups.Group

getId, getLabel, getParentGroup, getParentNetwork, getStateInfo, hasParentGroup, isMarkedForDeletion, isTopLevelGroup, setId, setLabel, setMarkedForDeletion, setParentGroup, setStateInfo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.simbrain.network.trainers.Trainable

getInputNeurons, getOutputNeurons

Constructor Detail

BPTTNetwork

public BPTTNetwork(Network network,
                   int numInputNodes,
                   int numHiddenNodes,
                   int numOutputNodes,
                   java.awt.geom.Point2D initialPosition)

Constructor specifying root network, and number of nodes in each layer.

Parameters:

network - underlying network

numInputNodes - number of nodes in the input layer

numHiddenNodes - number of nodes in the hidden and context layers

numOutputNodes - number of output nodes

initialPosition - where to position the network (upper left)

Method Detail

initNetwork

public void initNetwork()

Description copied from interface: Trainable

Initialize the network. E.g. used before a training run for SRN's to clear activations.

Specified by:

initNetwork in interface Trainable

update

public void update()

Description copied from class: Group

Update this group.

Overrides:

update in class Subnetwork

getHiddenLayer

public NeuronGroup getHiddenLayer()

Returns the hidden layer.

Returns:

the hidden layer

getTrainingSet

public TrainingSet getTrainingSet()

Description copied from interface: Trainable

Returns the the training set, which contains input and target data.

Specified by:

getTrainingSet in interface Trainable

Returns:

the training set.

getStepsPerSequences

public int getStepsPerSequences()

Returns:

the stepsPerSequences

setStepsPerSequences

public void setStepsPerSequences(int stepsPerSequences)

Parameters:

stepsPerSequences - the stepsPerSequences to set

getUpdateMethodDesecription

public java.lang.String getUpdateMethodDesecription()

Description copied from class: Group

Returns a description of this group's update method, which is displayed in the update manager panel.

Overrides:

getUpdateMethodDesecription in class FeedForward

Returns:

a description of the update method.

getNetwork

public Group getNetwork()

Description copied from interface: Trainable

Returns a reference to the subnetwork or synapse group being trained.

Specified by:

getNetwork in interface Trainable

Returns:

the network being trained.