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Navigation: Code Documentation > GeneticAlgorithm

RSGenerics.GeneticProgramming Namespace

Defines generics classes for adding genetic programs to your applications.

Genetic programming is a computer science method, inspired by evolutionary biology, for automatically solving problems, without having to know or define the form or structure of optimum problem structure beforehand. You define the basic building blocks (functions, constants, and variables) of the problem and then the component does the rest. Genetic programming solves problems by evolving a group or population of candidate individuals through successive generations, selecting fitter (or better) child individuals for each generation, until a solution is found. It uses evolutionary biology techniques such as inheritance, mutation, selection, and crossover (also called recombination).

Name

Description

public class

TRSCustomGeneticProgramming<T>

The TRSCustomGeneticProgramming<T> component is the base class for including genetic programming (GP) in your programs. The descendant classes (TRSBinaryGeneticProgramming, TRSGeneticProgramming, etc) instantiate this generic type for floating point values and publish the properties of this class and are what you will drop on your forms or data module.

The TRSCustomGeneticProgramming<T> class contains a population of individuals (TRSGPPopulation<T>), which contain genetic program trees as DNA. These DNA are used to represent the solution to the search problem. They represent the functions, constants, and variables of each candidate solution (or individual), represented by a TRSGPIndividual<T> class.

After setting up the Instructions that your genetic programs can use, you set the InitialPopulation , define a fitness function ( OnEvaluateFitness event) to properly "score" each individual, and then Evolve your solution.

Note
This is a generics-based implementation of a genetic programming component. For the RSGeneticProgramming\|TRSGeneticProgramming class, the generics class is instantiated as floating point values. However, you can define your own genetic programming component using whatever type you want.

public class

TRSCustomGeneticProgrammingExecutor<T>

Defines the base class for a component that can read and execute a genetic program. Use this class when you have already evolved a solution to your problem and need to execute the genetic program.

Note
This is a generics-based implementation of a genetic programming executor component. For the RSGeneticProgramming\|TRSGeneticProgrammingExecutor class, the generics class is instantiated as floating point values. However, you can define your own genetic programming executor component using whatever type you want.

public class

TRSGPIndividual<T>

Represents one individual, or candidate solution, in the Population of solutions in a genetic programming problem. In genetic programming ( RSGenerics.GeneticProgramming.TRSCustomGeneticProgramming<T> component), there is a population of individuals (TRSGPPopulation<T>), which contain tree-based DNA programs. Each candidate individual (represented by a TRSGPIndividual<T> class) has "DNA", which contains one program containing functions and terminals (constants and variables)

Genetic Programming works by evolving your population towards the solution of the problem. Parents are selected from the current generation to reproduce the children of the next generation. Evolving a new generation involves:

• Selecting 2 parents (Individuals) to reproduce

• Splicing the DNA program trees of the 2 parents together to make a child (the child inherits the parents trees or sub-trees)

• Optionally Mutating and Inverting the DNA trees of the child to provide randomness

• Repeating the above steps until the population of the new generation has been produced.

After the new generation is bred, genetic programming looks at the new population to see if any of the individuals solve the problem. In genetic programming terms, this usually means evaluating the "fitness" of each individual (a numeric score that measures the ability of the individual). If any individual is "fit enough", the evolutionary search stops.

Note
This is a generics-based implementation of a genetic programming population. For the RSGeneticProgramming\|TRSGeneticProgramming class, the generics class is instantiated as floating point values. However, you can define your own genetic programming component using whatever type you want.

public class

TRSGPPopulation<T>

Represents the entire population (collection of RSGenerics.GeneticProgramming.TRSGPIndividual<T> ) in a genetic programming problem. The population class represents the set of candidate solutions in a genetic programming problem. In genetic programming ( RSGenerics.GeneticProgramming.TRSCustomGeneticProgramming<T> component), there is a population of individuals (TRSGPPopulation<T>), which contain tree-based DNA programs. Each candidate individual (represented by a TRSGPIndividual<T> class) has "DNA", which contains one program containing functions and terminals (constants and variables)

• Selecting 2 parents (Individuals) to reproduce

• Splicing the DNA program trees of the 2 parents together to make a child (the child inherits the parents trees or sub-trees)

• Optionally Mutating and Inverting the DNA trees of the child to provide randomness

• Repeating the above steps until the population of the new generation has been produced.

Note
This is a generics-based implementation of a genetic programming population. For the RSGeneticProgramming\|TRSGeneticProgramming class, the generics class is instantiated as floating point values. However, you can define your own genetic programming component using whatever type you want.

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	Name	Description
	TRSCustomGeneticProgramming<T>.TContext	Represents an alias of the TRSGPContext<T> type.
	TRSCustomGeneticProgramming<T>.TIndividual	Represents an alias of the TRSGPIndividual<T> type.
	TRSCustomGeneticProgramming<T>.TInstruction	Represents an alias of the TRSGPInstruction<T> type.
	TRSCustomGeneticProgramming<T>.TInstructionList	Represents an alias of the TList type.
	TRSCustomGeneticProgramming<T>.TInstructions	Represents an alias of the TRSGPInstructions<T> type.
	TRSCustomGeneticProgramming<T>.TNode	Represents an alias of the TRSGPNode<T> type.
	TRSCustomGeneticProgramming<T>.TNodeList	Represents an alias of the TList type.
	TRSCustomGeneticProgramming<T>.TPopulation	Represents an alias of the TRSGPPopulation<T> type.
	TRSCustomGeneticProgramming<T>.TValues	Represents an alias of the TRSGPValues<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TContext	Represents an alias of the TRSGPContext<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TIndividual	Represents an alias of the TRSGPIndividual<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TInstruction	Represents an alias of the TRSGPInstruction<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TInstructions	Represents an alias of the TRSGPInstructions<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TNode	Represents an alias of the TRSGPNode<T> type.
	TRSCustomGeneticProgrammingExecutor<T>.TValues	Represents an alias of the TRSGPValues<T> type.
	TRSGPIndividual<T>.TNode	Represents an alias of the TRSGPNode<T> type.
	TRSGPIndividual<T>.TNodeList	Represents an alias of the TList type.

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	Name	Description
	Correlation(Double[],Double[])	Represents method Correlation(Double[],Double[]).
	CoVariance(Double[],Double[])	Represents method CoVariance(Double[],Double[]).

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