boone.links

Class MaxPoolLink

java.lang.Object

boone.BrainPart

boone.Link

boone.links.MaxPoolLink

All Implemented Interfaces:

Storable, java.lang.Cloneable

public class MaxPoolLink
extends Link
implements Storable

A link for max pooling. The only specific operation is the unweighted signal transmission. Hence, the output value of the source neuron is passed directly to the sink neuron without applying a weight, Hence, the sink neuron can perform max pooling. The weight of this link is then set to reflect the max pooling operation. Note that this link weight is not subjected to training, but the weights are needed for correct error back-propagation to previous layers.

Since:

July 2021

Version:

$Id$

Author:

Helmut A. Mayer

Field Summary

Fields inherited from class boone.Link

sink, source, value

Fields inherited from class boone.BrainPart

activationFn, name, NO_ID, weight

Constructor Summary

Constructors

Constructor and Description
MaxPoolLink() Creates a not trainable link with a name.
MaxPoolLink(Neuron source, Neuron sink) Creates a new link from source to sink.

Method Summary

Modifier and Type	Method and Description
void	addGradient(double value) Does nothing, as this link is not trained.
MaxPoolLink	clone() Returns a semi-deep copy of this object.
void	propagate() Propagates the output of the source neuron over the link without applying the weight, i.e.

Methods inherited from class boone.Link

clearSink, clearSource, disconnect, fromXML, getOtherNeuron, getSink, getSource, getValue, isDangling, isDirected, isInputOf, isOutputOf, replaceFrom, replaceNeuron, setDirected, setSink, setSource, setValue, toString, toXML

Methods inherited from class boone.BrainPart

addToWeight, calculate, fromXML, getAccu, getActivationFn, getGradient, getID, getLastGradient, getName, getUniqueID, getWeight, isTrainable, randomize, randomize, reset, setAccu, setActivationFn, setGradient, setID, setLastGradient, setName, setTrainable, setWeight

Methods inherited from class java.lang.Object

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

Methods inherited from interface boone.io.Storable

fromXML, toXML

Constructor Detail

MaxPoolLink

public MaxPoolLink()

Creates a not trainable link with a name.

MaxPoolLink

public MaxPoolLink(Neuron source,
                   Neuron sink)

Creates a new link from source to sink.

Parameters:

source - the source neuron

sink - the sink neuron

Method Detail

clone

public MaxPoolLink clone()

Returns a semi-deep copy of this object. Sets the source and sink neuron of the clone to null. Note that the name is taken without change from the cloned neuron.

Overrides:

clone in class Link

Returns:

a semi-deep clone

addGradient

public void addGradient(double value)

Does nothing, as this link is not trained.

Overrides:

addGradient in class BrainPart

Parameters:

value - a value

propagate

public void propagate()

Propagates the output of the source neuron over the link without applying the weight, i.e. the value is not changed.

Overrides:

propagate in class Link