boone.util

Class Nets

java.lang.Object

boone.util.Nets

public class Nets
extends java.lang.Object

A class supporting network operations.

Since:

November 2021

Version:

$Id: DataSet.java 2271 2015-03-22 jmory $

Author:

Helmut A. Mayer

Constructor Summary

Constructors

Constructor and Description
Nets()

Method Summary

Modifier and Type	Method and Description
static boolean	isSame(java.util.List<Map> maps) Checks, if all the maps in the list are of same type and size.
static int	purify(NeuralNet net) Removes safely all dangling links and neurons of a network.
static int	removeDanglingLinks(NeuralNet net) Removes safely all dangling links of a network.
static int	removeDanglingNeurons(NeuralNet net) Removes safely all dangling hidden neurons of a network.
static Link	searchDanglingLink(java.util.List<Link> links, long id) Searches a dangling link of given ID in a list.
static Link	searchLink(java.util.List<Link> links, long id) Searches the link of given ID in a list.
static Neuron	searchNeuron(java.util.List<Neuron> neurons, long id) Searches the neuron of given ID in a list.

Methods inherited from class java.lang.Object

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

Constructor Detail

Nets

public Nets()

Method Detail

searchNeuron

public static Neuron searchNeuron(java.util.List<Neuron> neurons,
                                  long id)

Searches the neuron of given ID in a list. A simple heuristic is used to speed up the search by starting the search at the position, where the last part was found. From this position the list is searched backwards.

Parameters:

neurons - a list of neurons

id - an ID

Returns:

the neuron, null, if not found

searchLink

public static Link searchLink(java.util.List<Link> links,
                              long id)

Searches the link of given ID in a list. A simple heuristic is used to speed up the search by starting the search at the position, where the last part was found. From this position the list is searched backwards.

Parameters:

links - a list of links

id - an ID

Returns:

the link, null, if not found

searchDanglingLink

public static Link searchDanglingLink(java.util.List<Link> links,
                                      long id)

Searches a dangling link of given ID in a list. A simple heuristic is used to speed up the search by starting the search at the position, where the last part was found. From this position the list is searched forwards.

Parameters:

links - a list of links

id - an ID

Returns:

the link, null, if not found

isSame

public static boolean isSame(java.util.List<Map> maps)

Checks, if all the maps in the list are of same type and size.

Parameters:

maps - the maps (it is assumed that there is at least one map)

Returns:

true, if all have same width and height

purify

public static int purify(NeuralNet net)

Removes safely all dangling links and neurons of a network.

Parameters:

net - a neural net

Returns:

the number of removed brain parts

removeDanglingLinks

public static int removeDanglingLinks(NeuralNet net)

Removes safely all dangling links of a network.

Parameters:

net - a neural net

Returns:

the number of removed links

removeDanglingNeurons

public static int removeDanglingNeurons(NeuralNet net)

Removes safely all dangling hidden neurons of a network. Input and output neurons are not removed.

Parameters:

net - a neural net

Returns:

the number of removed neurons