keel.Algorithms.Genetic_Rule_Learning.CORE

Class Population

java.lang.Object

keel.Algorithms.Genetic_Rule_Learning.CORE.Population

public class Population
extends java.lang.Object

This class represents the population of chromosomes in the CORE algorithm. It is composed by a set of subpopulations (many as number of different classes in the data set)

Constructor Summary

Constructors

Constructor and Description
Population() Constructor which initializes the memory allocations.

Method Summary

Modifier and Type	Method and Description
void	addRule(int _class, Chromosome rule) Adds a rule to the specified subpopulation
void	evaluate(InstanceSet ISet) Evaluates all this population with a given data set.
int	getMu(int _class) Gets the mu value of one subpopulation
int	getNumGenes(int _class) Gets the number of genes of one subpopulation
int	getNumRules(int _class) Gets the number of rules of the specified subpopulation
Chromosome	getRule(int globalIndex) Gets one rule using its global index, that is, the index across all subpopulations
Chromosome	getRule(int _class, int index) Gets the indicated rule
void	mutate(int _class, int chrom, int gen) Mutates a chromosome in a specified subpopulation
void	removeRule(int _class, Chromosome r) Removes one rule of the specified subpopulation
void	setEvaluated(int _class, int chrom, boolean evaluated) Sets the evaluation status of one rule in a specific subpopulation
void	setMu(int _class, int newMu) Sets the new mu value for one subpopulation

Methods inherited from class java.lang.Object

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

Constructor Detail

Population

public Population()

Constructor which initializes the memory allocations.

Method Detail

getRule

public Chromosome getRule(int _class,
                          int index)

Gets the indicated rule

Parameters:

_class - class of the subpopulation which the rule belongs to

index - index of the rule in the proper subpopulation

Returns:

the rule we want

getRule

public Chromosome getRule(int globalIndex)

Gets one rule using its global index, that is, the index across all subpopulations

Parameters:

globalIndex - global index of the rule

Returns:

the indicated rule

addRule

public void addRule(int _class,
                    Chromosome rule)

Adds a rule to the specified subpopulation

Parameters:

_class - the class which identifies the subpopulation

rule - the rule to be added

getNumGenes

public int getNumGenes(int _class)

Gets the number of genes of one subpopulation

Parameters:

_class - the class which identifies the subpopulation

Returns:

the number of genes of the specified subpopulation

getNumRules

public int getNumRules(int _class)

Gets the number of rules of the specified subpopulation

Parameters:

_class - the class which identifies the subpopulation

Returns:

the number of rules of the specified subpopulation

getMu

public int getMu(int _class)

Gets the mu value of one subpopulation

Parameters:

_class - the class which identifies the subpopulation

Returns:

the mu value of the subpopulation

setMu

public void setMu(int _class,
                  int newMu)

Sets the new mu value for one subpopulation

Parameters:

_class - the class which identifies the subpopulation

newMu - the new mu value for mutation

mutate

public void mutate(int _class,
                   int chrom,
                   int gen)

Mutates a chromosome in a specified subpopulation

Parameters:

_class - the class which identifies the subpopulation

chrom - the index of the chromosome to be mutated

gen - the gene of the chromosome to be mutated

setEvaluated

public void setEvaluated(int _class,
                         int chrom,
                         boolean evaluated)

Sets the evaluation status of one rule in a specific subpopulation

Parameters:

_class - the class which identifies the subpopulation

chrom - the chromosome (rule) to be changed

evaluated - the new evaluation status of the rule

removeRule

public void removeRule(int _class,
                       Chromosome r)

Removes one rule of the specified subpopulation

Parameters:

_class - the class which identifies the subpopulation

r - the rule to be deleted

evaluate

public void evaluate(InstanceSet ISet)

Evaluates all this population with a given data set. Stores the obtained fitness in each rule, updating the previous one, and setting the evaluated status of the rules to True.

Parameters:

ISet - the data set to evaluate with