Package org.uma.evolver.parameter.factory

Class PermutationParameterFactory

java.lang.Object

org.uma.evolver.parameter.factory.PermutationParameterFactory

All Implemented Interfaces:

ParameterFactory<org.uma.jmetal.solution.permutationsolution.PermutationSolution<Integer>>

public class PermutationParameterFactory
extends Object
implements ParameterFactory<org.uma.jmetal.solution.permutationsolution.PermutationSolution<Integer>>

Factory class for creating and configuring categorical parameters specific to evolutionary algorithms that operate on permutation-based solutions. This factory implements the ParameterFactory interface to provide type-safe creation of various algorithm components and their parameters.

The factory supports the creation of parameters for different components including:

• Variation operators (crossover, mutation) for permutation solutions
• Selection mechanisms
• Archiving strategies
• Solution initialization methods
• Density estimators
• And other algorithm-specific parameters

This implementation is specifically designed for algorithms working with permutation-encoded solutions and provides appropriate parameter types that are compatible with the PermutationSolution interface.

Since:

1.0

Author:

Antonio J. Nebro

Constructor Summary

Constructors

Constructor	Description
PermutationParameterFactory()

Method Summary

Modifier and Type	Method	Description
CategoricalParameter	createParameter(String parameterName, List<String> values)	Creates and returns a specific CategoricalParameter instance based on the provided parameter name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PermutationParameterFactory

public PermutationParameterFactory()

Method Details

createParameter

public CategoricalParameter createParameter(String parameterName,
 List<String> values)

Creates and returns a specific CategoricalParameter instance based on the provided parameter name. This factory method centralizes the creation of all parameter types used in evolutionary algorithms that operate on permutation-encoded solutions.

The following parameter types are supported:

Supported Parameter Types

Parameter Name	Creates	Description
archiveType	ExternalArchiveParameter	External archive type for storing non-dominated solutions
aggregationFunction	AggregationFunctionParameter	Function for aggregating multiple objectives
createInitialSolutions	CreateInitialSolutionsPermutationParameter	Strategy for creating initial population of permutation solutions
crossover	PermutationCrossoverParameter	Permutation-solution crossover operator
densityEstimator	DensityEstimatorParameter	Density estimation method for solution selection
mutation	PermutationMutationParameter	Permutation-solution mutation operator
sequenceGenerator	SequenceGeneratorParameter	Generator for sequence-based parameters
ranking	RankingParameter	Solution ranking method
replacement	ReplacementParameter	Strategy for population replacement
selection	SelectionParameter	Parent selection mechanism
variation	PermutationVariationParameter	Variation operator for permutation solutions
subProblemIdGenerator	SequenceGeneratorParameter	Generator for sub-problem identifiers
any other value	CategoricalParameter	Basic categorical parameter with the given name

Specified by:

createParameter in interface ParameterFactory<org.uma.jmetal.solution.permutationsolution.PermutationSolution<Integer>>

Parameters:

parameterName - the name of the parameter to create (case-sensitive)

values - the list of possible string values for the parameter (must not be null or empty)

Returns:

an instance of CategoricalParameter corresponding to the specified parameter name

Throws:

IllegalArgumentException - if the values list is null or empty

See Also:

• CategoricalParameter