ActivationCompetitive ClassEncog Machine Learning Framework for .Net
An activation function that only allows a specified number, usually one, of the out-bound connection to win. These connections will share in the sum of the output, whereas the other neurons will receive zero. This activation function can be useful for "winner take all" layers.
Inheritance Hierarchy

System Object
  Encog.Engine.Network.Activation ActivationCompetitive

Namespace: Encog.Engine.Network.Activation
Assembly: encog-core-cs (in encog-core-cs.dll) Version: 3.3.0.0 (3.3.0.0)
Syntax

[SerializableAttribute]
public class ActivationCompetitive : IActivationFunction, 
	ICloneable

The ActivationCompetitive type exposes the following members.

Constructors

  NameDescription
Public methodActivationCompetitive 
Create a competitive activation function with one winner allowed.
Public methodActivationCompetitive(Int32)
Create a competitive activation function with the specified maximum number of winners.
Top
Methods

  NameDescription
Public methodActivationFunction
Implements the activation function. The array is modified according to the activation function being used. See the class description for more specific information on this type of activation function.
Public methodDerivativeFunction
Calculate the derivative. For performance reasons two numbers are provided. First, the value "b" is simply the number that we would like to calculate the derivative of. Second, the value "a", which is the value returned by the activation function, when presented with "b". We use two values because some of the most common activation functions make use of the result of the activation function. It is bad for performance to calculate this value twice. Yet, not all derivatives are calculated this way. By providing both the value before the activation function is applied ("b"), and after the activation function is applied("a"), the class can be constructed to use whichever value will be the most efficient.
Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as a hash function for a particular type.
(Inherited from Object.)
Public methodGetType
Gets the type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Top
Fields

  NameDescription
Public fieldStatic memberParamCompetitiveMaxWinners
The offset to the parameter that holds the max winners.
Top
Properties

  NameDescription
Public propertyHasDerivative
Public propertyMaxWinners
The maximum number of winners this function supports.
Public propertyParamNames
Public propertyParams
Top
See Also