Package com.github.raimannma.architecture

Class Node

java.lang.Object

com.github.raimannma.architecture.Node

public class Node
extends Object

The type Node.

Author:

Manuel Raimann

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Node.NodeType	Node types.

Field Summary

Fields

Modifier and Type	Field	Description
Activation	activationType	The Activation type.
double	bias	Neuron's bias.
List<Connection>	gated	Gated connections.
Set<Connection>	in	Incoming connections.
int	index	The Index.
double	mask	Used for dropout.
Set<Connection>	out	Outgoing connections.
Connection	self	Connection to the node itself.
Node.NodeType	type	The NodeType.

Constructor Summary

Constructors

Constructor	Description
Node(Node.NodeType type)	Instantiates a new Node.

Method Summary

Modifier and Type	Method	Description
double	activate()	Activates the node.
void	activate(double input)	Activates the node with input value.
void	clear()	Resets this node.
Connection	connect(Node target, double weight)	Connect this node to another node.
void	disconnect(Node target)	Disconnects this node from the target node.
boolean	equals(Object o)
static @NotNull Node	fromJSON(@NotNull com.google.gson.JsonObject jsonObject)	Convert a JsonObject to a node.
void	gate(@NotNull Connection connection)	Set this node to gate (influences) the given connection.
int	hashCode()
boolean	isNotProjectingTo(Node target)	Checks if there is no connection between this node and the target node.
void	removeGate(Connection connection)	Stops this node from gating (manipulating) the given connection.
com.google.gson.JsonObject	toJSON()	Converts the node to a JsonObject that can later be converted back.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

in

public final Set<Connection> in

Incoming connections.

out

public final Set<Connection> out

Outgoing connections.

gated

public final List<Connection> gated

Gated connections.

self

public Connection self

Connection to the node itself.

activationType

public Activation activationType

The Activation type.

bias

public double bias

Neuron's bias.

See Also:

Neuron's bias

index

public int index

The Index. -used for crossover

type

public Node.NodeType type

The NodeType.

mask

public double mask

Used for dropout. This is either 0 (ignored) or 1 (included) during training and is used to avoid overfit.

Constructor Details

Node

public Node(Node.NodeType type)

Instantiates a new Node.

Parameters:

type - the type

Method Details

fromJSON

@NotNull public static @NotNull Node fromJSON(@NotNull @NotNull com.google.gson.JsonObject jsonObject)

Convert a JsonObject to a node.

Parameters:

jsonObject - the json object which holds the information

Returns:

the node created from the information of the json object

activate

public double activate()

Activates the node.

When a neuron activates, it computes its state from all its input connections and 'squashes' it using its activation function, and returns the output (activation).

Returns:

A neuron's squashed output value.

activate

public void activate(double input)

Activates the node with input value.

When a neuron activates, it computes its state from all its input connections and 'squashes' it using its activation function, and returns the output (activation).

You can also provide the activation (a float between 0 and 1) as a parameter, which is useful for neurons in the input layer.

Parameters:

input - the input to this node

connect

public Connection connect(Node target, double weight)

Connect this node to another node.

Parameters:

target - the target node

weight - the weight value of the connection between this and the target node

Returns:

the created connection pointing from this node to the target node

isNotProjectingTo

public boolean isNotProjectingTo(Node target)

Checks if there is no connection between this node and the target node.

Parameters:

target - the target node

Returns:

is there no connection

clear

public void clear()

Resets this node.

disconnect

public void disconnect(Node target)

Disconnects this node from the target node.

Parameters:

target - the target node

removeGate

public void removeGate(Connection connection)

Stops this node from gating (manipulating) the given connection.

Parameters:

connection - Connection to ungate

gate

public void gate(@NotNull @NotNull Connection connection)

Set this node to gate (influences) the given connection.

Parameters:

connection - Connection to be gated (influenced) by a node.

toJSON

public com.google.gson.JsonObject toJSON()

Converts the node to a JsonObject that can later be converted back.

Returns:

the created JsonObject

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object