de.htwdd.rosenkoenig.neuro.net
Class Sigmoid

java.lang.Object
  de.htwdd.rosenkoenig.neuro.net.Sigmoid

All Implemented Interfaces:

ActivationFunction

public class Sigmoid
extends java.lang.Object
implements ActivationFunction

A sigmoid activation function.

Field Summary

private static Sigmoid

instance Create a new instance of the class to return to all that call the function getInstance.

Constructor Summary

private

Sigmoid() Default ctor

Method Summary

double	compute(double value)
double	computeDerivation(double value)
static Sigmoid	getInstance()

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static Sigmoid instance

Create a new instance of the class to return to all that call the function getInstance.

Constructor Detail

Sigmoid

private Sigmoid()

Default ctor

Method Detail

compute

public double compute(double value)

Specified by:

compute in interface ActivationFunction

Parameters:

value - value to compute something from.

Returns:

result computed from value. Takes value and computes something from it using a function.

computeDerivation

public double computeDerivation(double value)

Specified by:

computeDerivation in interface ActivationFunction

Parameters:

value - value to compute something from.

Returns:

result computed from value. Takes value and computes something from it using a derivation of a function.

getInstance

public static Sigmoid getInstance()

Returns:

the instance of this class