gal::Chromosome< T > Class Template Reference

Represents a chromosome that models a value of any type T. More...

#include <Chromosome.h>

Inheritance diagram for gal::Chromosome< T >:

[legend]List of all members.

Public Member Functions
	Chromosome ()
	Constructs an empty Chromosome.
	Chromosome (int length)
	Constructs a Chromosome, initialised with a random bitstring.
int	length ()
	Returns the length of the bitstring.
bool	isElite ()
	Returns whether this Chromosome has the elite-status, which is needed in the Population evolution.
void	setElite (bool isElite=true)
	Sets the elite status of this chromosome.
void	setLength (int length)
	Sets the number of bits in this Chromosome's bitstring.
virtual void	setBits (char *c)
	Sets the bitstring of this chromosome, from begin to end.
virtual std::list< char > const	getInterpretedBitstring ()
	Returns the actual interpretation of a bit string.
virtual T const	getValue ()
	Returns the represented value of this Chromosome.
virtual std::string const	getValueText ()
	Returns the represented value of this Chromosome as a string.
virtual std::string const	getBitstringText ()
	Returns a string representation of the raw bitstring.
virtual std::string const	getInterpretedBitstringText ()
	Returns a string representation of the interpreted bitstring.
virtual void	mutate (double prob)
	Perform mutation, i.e.
virtual void	crossover (int pos, Chromosome< T > *g)
	Perform crossover with another Chromosome, i.e.
virtual void	crossover (Chromosome< T > *g)
	Perform crossover with an other Chromosome at a random position.
Protected Attributes
std::list< char >	_bits
	The bitstring as a list of chars.

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Detailed Description

template<class T>
class gal::Chromosome< T >

Represents a chromosome that models a value of any type T.

Examples of type T are: int for one variable, vector<double> for a point in n-dimensional space.

One always needs to use a subclass of this class, where all virtual functions are defined.

See also:

IntChromosome

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Constructor & Destructor Documentation

template<class T> gal::Chromosome< T >::Chromosome (   )  [inline]

Constructs an empty Chromosome.

template<class T> gal::Chromosome< T >::Chromosome (  int  length  )  [inline]

Constructs a Chromosome, initialised with a random bitstring. Parameters: length  The number of bits in this Chromosome.

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Member Function Documentation

template<class T> virtual void gal::Chromosome< T >::crossover (  Chromosome< T > *  g  )  [inline, virtual]

Perform crossover with an other Chromosome at a random position. See also: Chromosome<T>::crossover(int pos, Chromosome<T>* g)

template<class T> virtual void gal::Chromosome< T >::crossover (  int  pos, Chromosome< T > *  g )  [inline, virtual]

Perform crossover with another Chromosome, i.e. split both this and the other chromosome at the same position in their bitstring, and exchange one of their halves. chromosome 1: AAAABBB --> AAAADDD chromosome 2: CCCCDDD --> CCCCBBB ^pos = 4 (i.e. start at 0) Parameters: pos  bit position where crossover takes place. g  The other 'parent' in this crossover.

template<class T> virtual std::string const gal::Chromosome< T >::getBitstringText (   )  [inline, virtual]

Returns a string representation of the raw bitstring.

template<class T> virtual std::list<char> const gal::Chromosome< T >::getInterpretedBitstring (   )  [inline, virtual]

Returns the actual interpretation of a bit string. By default, this is just the same bit string, but an alternative would be the Gray-decoded value of the raw bit string. See also: GrayCodeChromosome Reimplemented in gal::GrayCodeChromosome< T >, and gal::GrayCodeChromosome< int >.

template<class T> virtual std::string const gal::Chromosome< T >::getInterpretedBitstringText (   )  [inline, virtual]

Returns a string representation of the interpreted bitstring. See also: getInterpretedBitstring()

template<class T> virtual T const gal::Chromosome< T >::getValue (   )  [inline, virtual]

Returns the represented value of this Chromosome. This method should always be defined in a derived class. Reimplemented in gal::IntChromosome, and gal::IntGCChromosome.

template<class T> virtual std::string const gal::Chromosome< T >::getValueText (   )  [inline, virtual]

Returns the represented value of this Chromosome as a string. This method should always be defined in a derived class. Reimplemented in gal::IntChromosome, and gal::IntGCChromosome.

template<class T> bool gal::Chromosome< T >::isElite (   )  [inline]

Returns whether this Chromosome has the elite-status, which is needed in the Population evolution.

template<class T> int gal::Chromosome< T >::length (   )  [inline]

Returns the length of the bitstring.

template<class T> virtual void gal::Chromosome< T >::mutate (  double  prob  )  [inline, virtual]

Perform mutation, i.e. flip each bit with specified probability. Parameters: prob  Probability of a single bitflip.

template<class T> virtual void gal::Chromosome< T >::setBits (  char *  c  )  [inline, virtual]

Sets the bitstring of this chromosome, from begin to end. Parameters: c  Array of bits (generally 0 and 1's).

template<class T> void gal::Chromosome< T >::setElite (  bool  isElite = true  )  [inline]

Sets the elite status of this chromosome. Parameters: isElite  When no value is specified, the status defaults to true.

template<class T> void gal::Chromosome< T >::setLength (  int  length  )  [inline]

Sets the number of bits in this Chromosome's bitstring.

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The documentation for this class was generated from the following file:

• Chromosome.h

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