jenes.chromosome
Class IntegerChromosome

java.lang.Object
  jenes.chromosome.IntegerChromosome

All Implemented Interfaces:

java.lang.Cloneable, Chromosome<IntegerChromosome>

public final class IntegerChromosome
extends java.lang.Object
implements Chromosome<IntegerChromosome>

An IntegerChromosome is made of an array of integers. Each value (i.e. allele) is within the range [lowerBound,upperBound]. Both bounds are included. These bounds are specified ad the instantiation time. IntegerChromosome is a fixed length chromosome. Thus the numebr of genes is specified at the instantiation time and cannot be modified after.

Since:

1.0

Version:

1.2

Author:

Luigi Troiano, Pierpaolo Lombardi, Giuseppe Pascale, Thierry Bodhuin

See Also:

Chromosome

Constructor Summary

IntegerChromosome(IntegerChromosome chromosome)
Creates a new IntegerIndividual with the specified chromosome

IntegerChromosome(int length, int lowerBound, int upperBound)
Creates a new IntegerIndividual with each allele in the range [lowerBound, upperBound]

Method Summary

IntegerChromosome	clone() Performs a chromosome deep-cloning.
void	cross(IntegerChromosome chromosome, int from) Exchanges the genes chromosome starting from a given position
void	cross(IntegerChromosome chromosome, int from, int to) Exchanges the genes chromosome within the range [from,to]
boolean	equals(IntegerChromosome chromosome) Compares the chromosome with another.
int	getDefaultValue() Returns the default value of this chromosome
int	getLowerBound() Returns the lower bound value for a gene of this chromosome
int	getUpperBound() Returns the upper bound value for a gene of this chromosome
int	getValue(int pos) Returns the integer value at the specified position
int[]	getValues() Returns the integer values
int[]	getValues(int[] values) Provides the gene values by the array passed as parameter and returning it on return.
void	leftShift(int from, int to) Makes a left-shift of the genes between two positions.
int	length() Returns the number of genes contained in the chromosome.
void	randomize() Fills the chromosome with random value.
void	randomize(int pos) Sets a random value in the specified position
void	rightShift(int from, int to) Makes a right-shift of the genes between two positions.
void	setAs(IntegerChromosome chromosome) Makes the chromosome a copy of another chromosome.
void	setDefaultValue(int defaultValue) Sets the default value of this chromosome
void	setDefaultValueAt(int pos) Sets the default value at a given position
void	setValue(int pos, int value) Sets the specified value at the specified position
void	swap(int pos1, int pos2) Exchanges two genes at the specified positions
java.lang.String	toString() Provides a textual chromosome representation

Methods inherited from class java.lang.Object

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

Constructor Detail

IntegerChromosome

public IntegerChromosome(IntegerChromosome chromosome)

Creates a new IntegerIndividual with the specified chromosome

Parameters:

chromosome - the parameters source chromosome

IntegerChromosome

public IntegerChromosome(int length,
                         int lowerBound,
                         int upperBound)

Creates a new IntegerIndividual with each allele in the range [lowerBound, upperBound]

Parameters:

length - the chromosome length

lowerBound - the allele lower bound

upperBound - the allele upper bound

Method Detail

getLowerBound

public final int getLowerBound()

Returns the lower bound value for a gene of this chromosome

Returns:

the alleles lower bound

getUpperBound

public final int getUpperBound()

Returns the upper bound value for a gene of this chromosome

Returns:

the alleles upper bound

setDefaultValueAt

public final void setDefaultValueAt(int pos)

Description copied from interface: Chromosome

Sets the default value at a given position

Specified by:

setDefaultValueAt in interface Chromosome<IntegerChromosome>

Parameters:

pos - the position where to set the default value

clone

public final IntegerChromosome clone()

Description copied from interface: Chromosome

Performs a chromosome deep-cloning.

Specified by:

clone in interface Chromosome<IntegerChromosome>

Overrides:

clone in class java.lang.Object

Returns:

a chromosome clone.

randomize

public final void randomize()

Description copied from interface: Chromosome

Fills the chromosome with random value.

Specified by:

randomize in interface Chromosome<IntegerChromosome>

swap

public final void swap(int pos1,
                       int pos2)

Description copied from interface: Chromosome

Exchanges two genes at the specified positions

Specified by:

swap in interface Chromosome<IntegerChromosome>

Parameters:

pos1 - the position of first gene

pos2 - the position of second gene

randomize

public final void randomize(int pos)

Description copied from interface: Chromosome

Sets a random value in the specified position

Specified by:

randomize in interface Chromosome<IntegerChromosome>

Parameters:

pos - a position where to set the random value

leftShift

public final void leftShift(int from,
                            int to)

Description copied from interface: Chromosome

Makes a left-shift of the genes between two positions. The shift is circular, so the most left-side gene becomes the last gene on right.

Specified by:

leftShift in interface Chromosome<IntegerChromosome>

Parameters:

from - the start position to be shifted

to - the final position to be shifted

rightShift

public final void rightShift(int from,
                             int to)

Description copied from interface: Chromosome

Makes a right-shift of the genes between two positions. The shift is circular, so the most right-side gene becomes the first gene on left.

Specified by:

rightShift in interface Chromosome<IntegerChromosome>

Parameters:

from - the start position to be shifted

to - the final position to be shifted

length

public final int length()

Description copied from interface: Chromosome

Returns the number of genes contained in the chromosome.

Specified by:

length in interface Chromosome<IntegerChromosome>

Returns:

the length of chromosome.

setAs

public final void setAs(IntegerChromosome chromosome)

Description copied from interface: Chromosome

Makes the chromosome a copy of another chromosome.

Specified by:

setAs in interface Chromosome<IntegerChromosome>

Parameters:

chromosome - the chromosome to be copied

cross

public final void cross(IntegerChromosome chromosome,
                        int from)

Description copied from interface: Chromosome

Exchanges the genes chromosome starting from a given position

Specified by:

cross in interface Chromosome<IntegerChromosome>

Parameters:

chromosome - the chromosome to cross with

from - the start position of the genes to exchange

cross

public final void cross(IntegerChromosome chromosome,
                        int from,
                        int to)

Description copied from interface: Chromosome

Exchanges the genes chromosome within the range [from,to]

Specified by:

cross in interface Chromosome<IntegerChromosome>

Parameters:

chromosome - the chromosome to cross with

from - the start position of the genes to exchange

to - the final position of the genes to exchange

getValue

public final int getValue(int pos)

Returns the integer value at the specified position

Parameters:

pos - a position into this population

Returns:

the integer value at the specified position

getValues

public final int[] getValues()

Returns the integer values

Returns:

values

getValues

public final int[] getValues(int[] values)

Provides the gene values by the array passed as parameter and returning it on return. If the argument values is null, the array is first created.

Parameters:

values - the array to fill

Returns:

the array of values

setDefaultValue

public final void setDefaultValue(int defaultValue)

Sets the default value of this chromosome

Parameters:

defaultValue - the new default value to be used

getDefaultValue

public final int getDefaultValue()

Returns the default value of this chromosome

Returns:

the integer default value of this chromosome

setValue

public final void setValue(int pos,
                           int value)

Sets the specified value at the specified position

Parameters:

pos - the position to be modify

value - the value to be insert

toString

public final java.lang.String toString()

Provides a textual chromosome representation

Overrides:

toString in class java.lang.Object

Returns:

the textual chromosome representation

equals

public final boolean equals(IntegerChromosome chromosome)

Compares the chromosome with another.

Specified by:

equals in interface Chromosome<IntegerChromosome>

Parameters:

chromosome - the chromosome to compare to.

Returns:

True, if the two chromosome are equal.