Package dk.alexandra.fresco.stat.mlp.activationfunction

Enum ActivationFunction

Object

Enum<ActivationFunction>

ActivationFunction

All Implemented Interfaces:

Serializable, Comparable<ActivationFunction>, Constable

public enum ActivationFunction
extends Enum<ActivationFunction>

This enum represents the available activation functions f: Rⁿ→ Rⁿ for use with neural networks. Use the get(ArrayList, ActivationFunction) or getDerivative(ArrayList, ArrayList, ActivationFunction) to get computations for the function and the derivative resp.

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
RELU
SIGMOID

Method Summary

Modifier and Type	Method	Description
static Computation<ArrayList<DRes<SFixed>>,ProtocolBuilderNumeric>	get(ArrayList<DRes<SFixed>> x, ActivationFunction type)
static Computation<ArrayList<DRes<SFixed>>,ProtocolBuilderNumeric>	getDerivative(ArrayList<DRes<SFixed>> x, ArrayList<DRes<SFixed>> y, ActivationFunction type)	Compute f'(x) for the given activation function f: Rn → Rn.
static ActivationFunction	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ActivationFunction[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

SIGMOID

public static final ActivationFunction SIGMOID

RELU

public static final ActivationFunction RELU

Method Details

values

public static ActivationFunction[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ActivationFunction valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

get

public static Computation<ArrayList<DRes<SFixed>>,ProtocolBuilderNumeric> get(ArrayList<DRes<SFixed>> x, ActivationFunction type)

getDerivative

public static Computation<ArrayList<DRes<SFixed>>,ProtocolBuilderNumeric> getDerivative(ArrayList<DRes<SFixed>> x, ArrayList<DRes<SFixed>> y, ActivationFunction type)

Compute f'(x) for the given activation function f: Rⁿ → Rⁿ. The function value y = f(x) may be used in the computation if it makes the computation easier for the given function.