org.jscience.computing.ai.neurocomputing
Class Activation.Tanh

java.lang.Object
  org.jscience.computing.ai.neurocomputing.Activation.Tanh

All Implemented Interfaces:

Activation

Enclosing interface:

Activation

public static class Activation.Tanh
extends java.lang.Object
implements Activation

Hyperbolic tangent activation function.

Nested Class Summary

Nested classes/interfaces inherited from interface org.jscience.computing.ai.neurocomputing.Activation

Activation.None, Activation.Sigmoid, Activation.Stepped, Activation.Tanh

Constructor Summary

Activation.Tanh()

Method Summary

double

function(double in) Return f(x) = ex-e-x) /(ex+e-x.

Methods inherited from class java.lang.Object

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

Constructor Detail

Activation.Tanh

public Activation.Tanh()

Method Detail

function

public double function(double in)

Return f(x) = e^x-e^-x) /(e^x+e^-x.

Specified by:

function in interface Activation

Parameters:

in - the input weight.

Returns:

tanh activation result.