RouletteWheelSelection Class

Roulette wheel selection method.

Inheritance Hierarchy

SystemObject
Accord.GeneticRouletteWheelSelection

Namespace: Accord.Genetic
Assembly: Accord.Genetic (in Accord.Genetic.dll) Version: 3.8.0

Syntax

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public class RouletteWheelSelection : ISelectionMethod

Public Class RouletteWheelSelection
	Implements ISelectionMethod

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The RouletteWheelSelection type exposes the following members.

Constructors

	Name	Description
	RouletteWheelSelection	Initializes a new instance of the RouletteWheelSelection class.

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Methods

	Name	Description
	ApplySelection	Apply selection to the specified population.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Extension Methods

	Name	Description
	HasMethod	Checks whether an object implements a method with the given name. (Defined by ExtensionMethods.)
	IsEqual	Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices. (Defined by Matrix.)
	To(Type)	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)
	ToT	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)

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Remarks

The algorithm selects chromosomes to the new generation according to their fitness values - the more fitness value chromosome has, the more chances it has to become member of new generation. Each chromosome can be selected several times to the new generation.

The "roulette's wheel" is divided into sectors, which size is proportional to the fitness values of chromosomes - the size of the wheel is the sum of all fitness values, size of each sector equals to fitness value of chromosome.

Reference

Accord.Genetic Namespace