GPTreeChromosome Class

Tree chromosome represents a tree of genes, which is is used for different tasks of Genetic Programming (GP).

Inheritance Hierarchy

SystemObject
Accord.GeneticChromosomeBase
Accord.GeneticGPTreeChromosome

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

Syntax

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public class GPTreeChromosome : ChromosomeBase

Public Class GPTreeChromosome
	Inherits ChromosomeBase

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The GPTreeChromosome type exposes the following members.

Constructors

	Name	Description
	GPTreeChromosome(GPTreeChromosome)	Initializes a new instance of the GPTreeChromosome class.
	GPTreeChromosome(IGPGene)	Initializes a new instance of the GPTreeChromosome class.

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Properties

	Name	Description
	Fitness	Chromosome's fitness value. (Inherited from ChromosomeBase.)
	MaxInitialLevel	Maximum initial level of genetic trees, [1, 25].
	MaxLevel	Maximum level of genetic trees, [1, 50].

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Methods

	Name	Description
	Clone	Clone the chromosome. (Overrides ChromosomeBaseClone.)
	CompareTo	Compare two chromosomes. (Inherited from ChromosomeBase.)
	CreateNew	Create new random chromosome with same parameters (factory method). (Overrides ChromosomeBaseCreateNew.)
	Crossover	Crossover operator. (Overrides ChromosomeBaseCrossover(IChromosome).)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Evaluate	Evaluate chromosome with specified fitness function. (Inherited from ChromosomeBase.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	Generate	Generate random chromosome value. (Overrides ChromosomeBaseGenerate.)
	Generate(GPTreeNode, Int32)	Generate chromosome's subtree of specified level.
	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.)
	Mutate	Mutation operator. (Overrides ChromosomeBaseMutate.)
	ToString	Get string representation of the chromosome by providing its expression in reverse polish notation (postfix notation). (Overrides ObjectToString.)

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Fields

	Name	Description
	fitness	Chromosome's fitness value. (Inherited from ChromosomeBase.)

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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

This type of chromosome represents a tree, where each node is represented by GPTreeNode containing IGPGene. Depending on type of genes used to build the tree, it may represent different types of expressions aimed to solve different type of tasks. For example, a particular implementation of IGPGene interface may represent simple algebraic operations and their arguments.

See documentation to IGPGene implementations for additional information about possible Genetic Programming trees.

Reference

Accord.Genetic Namespace