Class ActivationFunction

java.lang.Object

org.episteme.core.util.ExtensibleEnum

org.episteme.core.mathematics.ml.neural.ActivationFunction

All Implemented Interfaces:

Serializable, Comparable<ExtensibleEnum>

public final class ActivationFunction
extends ExtensibleEnum

Extensible categorization of neural network activation functions.

This class provides a standardized way to reference activation functions across different layers and models.

Since:

2.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final ActivationFunction	IDENTITY
static final ActivationFunction	LEAKY_RELU
static final EnumRegistry<ActivationFunction>	REGISTRY
static final ActivationFunction	RELU
static final ActivationFunction	SIGMOID
static final ActivationFunction	SOFTMAX
static final ActivationFunction	TANH

Constructor Summary

Constructors

Constructor	Description
ActivationFunction(String name)

Method Summary

Modifier and Type	Method	Description
boolean	isBuiltIn()	Checks if this is a built-in (predefined) value.
static String	normalizeName(String name)	Normalizes a name used for lookup.
static ActivationFunction	of(String name)	Gets or registers an activation function by name.
static ActivationFunction	valueOf(String name)
static ActivationFunction[]	values()

Methods inherited from class ExtensibleEnum

compareTo, description, equals, getDeclaringClass, hashCode, name, ordinal, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

REGISTRY

public static final EnumRegistry<ActivationFunction> REGISTRY

SIGMOID

public static final ActivationFunction SIGMOID

TANH

public static final ActivationFunction TANH

RELU

public static final ActivationFunction RELU

LEAKY_RELU

public static final ActivationFunction LEAKY_RELU

SOFTMAX

public static final ActivationFunction SOFTMAX

IDENTITY

public static final ActivationFunction IDENTITY

Constructor Details

ActivationFunction

public ActivationFunction(String name)

Method Details

isBuiltIn

public boolean isBuiltIn()

Description copied from class: ExtensibleEnum

Checks if this is a built-in (predefined) value. Default implementation returns true to mimic standard Enum behavior unless explicitly overridden.

Overrides:

isBuiltIn in class ExtensibleEnum

valueOf

public static ActivationFunction valueOf(String name)

values

public static ActivationFunction[] values()

normalizeName

public static String normalizeName(String name)

Normalizes a name used for lookup.

Parameters:

name - The name to normalize

Returns:

Normalized name

of

public static ActivationFunction of(String name)

Gets or registers an activation function by name.

Parameters:

name - Name of the activation function

Returns:

The activation function instance