keel.Algorithms.Genetic_Rule_Learning.CORE

Class Gene

java.lang.Object

keel.Algorithms.Genetic_Rule_Learning.CORE.Gene

public class Gene
extends java.lang.Object

This class represents a gene (i.e. a relation for a set of attribute values). The real values are stored in normalized form, and the nominal values are stored in a list form.

Constructor Summary

Constructors

Constructor and Description
Gene(Attribute a, int rel) Parameterized constructor
Gene(Gene g) Deep-copy constructor

Method Summary

Modifier and Type	Method and Description
void	addNominalValues(java.util.ArrayList<java.lang.String> values) add a set of nominal values, so their status are now active
Attribute	getAttribute() Gets the attribute associated to this gene
double	getRealValue() Retrieves the real value of this gene
void	mutate() Mutates this gene.
void	removeNominalValues(java.util.ArrayList<java.lang.String> values) removes a set of nominal values from the active list (if active)
boolean	same(Gene g) Test if two genes are the same, comparing all their values.
void	setNominalValue(int index, boolean activation) sets the activation for a nominal value, represented by its index in the nominal values list of the attribute
void	setRealmaxBound(double _value) Sets the maximum bound of this gene for the real values (for interval-based relations)
void	setRealminBound(double _value) Sets the minimum bound of this gene for the real values (for interval-based relations)
void	setRealValue(double _value) Sets the real value of this gene (for one value relations, i.e.
boolean	test(double input) Test a value from an instance (of the data set), to see if it is covered.

Methods inherited from class java.lang.Object

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

Constructor Detail

Gene

public Gene(Attribute a,
            int rel)

Parameterized constructor

Parameters:

a - the attribute of this gene

rel - the type of relation for the values of this gene

Gene

public Gene(Gene g)

Deep-copy constructor

Parameters:

g - the original gene

Method Detail

setRealValue

public void setRealValue(double _value)

Sets the real value of this gene (for one value relations, i.e. "greater than", "less or equal than", etc.)

Parameters:

_value - the new real value

setRealminBound

public void setRealminBound(double _value)

Sets the minimum bound of this gene for the real values (for interval-based relations)

Parameters:

_value - the new minimum bound

setRealmaxBound

public void setRealmaxBound(double _value)

Sets the maximum bound of this gene for the real values (for interval-based relations)

Parameters:

_value - the new maximum bound

getRealValue

public double getRealValue()

Retrieves the real value of this gene

Returns:

the real value of this relation (normalized!)

setNominalValue

public void setNominalValue(int index,
                            boolean activation)

sets the activation for a nominal value, represented by its index in the nominal values list of the attribute

Parameters:

index - the index of the nominal value

activation - the new activation status

addNominalValues

public void addNominalValues(java.util.ArrayList<java.lang.String> values)

add a set of nominal values, so their status are now active

Parameters:

values - the arraylist with the nominal values to be added

removeNominalValues

public void removeNominalValues(java.util.ArrayList<java.lang.String> values)

removes a set of nominal values from the active list (if active)

Parameters:

values - arraylist with the proper nominal values

getAttribute

public Attribute getAttribute()

Gets the attribute associated to this gene

Returns:

the attribute of this gene

mutate

public void mutate()

Mutates this gene. If nominal, swaps its activation status with 0.5 probability. If real valued, generates a random new value or new bounds.

same

public boolean same(Gene g)

Test if two genes are the same, comparing all their values.

Parameters:

g - the reference gene to be compared with

Returns:

True if equals in values, false otherwise

test

public boolean test(double input)

Test a value from an instance (of the data set), to see if it is covered.

Parameters:

input - the input value (of the same attribute as this Gene!)

Returns:

true if covered, false if not