arundel.core

Class Operator

java.lang.Object

arundel.core.Operator

All Implemented Interfaces:

Gate

public class Operator
extends java.lang.Object
implements Gate

An Operator is a site for computation of data. It essentially has some inputs, performs computation on these inputs with the function it has been initialized with and writes the result of thr computation to it output links. Note that this is the Gate responsible for branching computation and the flow of gradient in the computation graph.

Constructor Summary

Constructors

Constructor and Description
Operator(Function function) Creates an instance of Operator using a Function

Method Summary

Modifier and Type	Method and Description
void	backward() Method to compute the backward computation for this gate.
void	forward() Method to compute the forward computation for this gate.
void	initialize(Gate... gates) Initializes the inputs of this gate using the given list of parameters.
java.util.List<Link>	inputs() Returns the list of input links (incoming edges) for this Gate.
java.util.List<Link>	outputs() Returns the list of output links (outgoing edges) for this Gate.
void	update() Update the parmameters of this gate on the basis of backward computation.

Methods inherited from class java.lang.Object

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

Constructor Detail

Operator

public Operator(Function function)

Creates an instance of Operator using a Function

Parameters:

function - the funtion to be used for operating on the parameters

Method Detail

initialize

public void initialize(Gate... gates)

Initializes the inputs of this gate using the given list of parameters. It essentially establishes the required links between the invoking object and the parmter gates. Note that this method essentially responsible for establishing edges in the computation DAG

Parameters:

gates - the gates to receive inputs from

inputs

public java.util.List<Link> inputs()

Description copied from interface: Gate

Returns the list of input links (incoming edges) for this Gate.

Specified by:

inputs in interface Gate

Returns:

a List of Links, null if no inputs

outputs

public java.util.List<Link> outputs()

Description copied from interface: Gate

Returns the list of output links (outgoing edges) for this Gate.

Specified by:

outputs in interface Gate

Returns:

a List of Links

forward

public void forward()

Description copied from interface: Gate

Method to compute the forward computation for this gate.

Specified by:

forward in interface Gate

backward

public void backward()

Description copied from interface: Gate

Method to compute the backward computation for this gate.

Specified by:

backward in interface Gate

update

public void update()

Description copied from interface: Gate

Update the parmameters of this gate on the basis of backward computation.

Specified by:

update in interface Gate