de.jungblut.math.activation

Class StepActivationFunction

java.lang.Object

de.jungblut.math.activation.AbstractActivationFunction

de.jungblut.math.activation.StepActivationFunction

All Implemented Interfaces:

ActivationFunction

public class StepActivationFunction
extends AbstractActivationFunction

Classic perceptron-like step function. If the given input is greater than the threshold it will emit 1, else 0.

Author:

thomas.jungblut

Constructor Summary

Constructors

Constructor and Description
StepActivationFunction(double threshold)

Method Summary

Modifier and Type	Method and Description
double	apply(double input) Applies the activation function on the given element.
double	gradient(double input) Applies the gradient of the activation function on the given element.

Methods inherited from class de.jungblut.math.activation.AbstractActivationFunction

apply, apply, gradient, gradient, newInstance, newInstance, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

StepActivationFunction

public StepActivationFunction(double threshold)

Method Detail

apply

public double apply(double input)

Description copied from interface: ActivationFunction

Applies the activation function on the given element.

gradient

public double gradient(double input)

Description copied from interface: ActivationFunction

Applies the gradient of the activation function on the given element.