An evolving organism. More...
#include <organism.h>
Public Member Functions | |
| organism () | |
| Creation constructor. More... | |
| organism (const Genotype &a_value) | |
| Value constructor. More... | |
| organism (const organism &a_source) | |
| Copy constructor. More... | |
| organism (const organism &a_parent1, const organism &a_parent2) | |
| Crossover constructor. More... | |
| virtual | ~organism () |
| Virtual destructor. More... | |
| organism & | operator= (const organism &a_source) |
| assignment operator More... | |
| virtual bool | operator< (const organism &a_right) const |
| Comparison operator for algorithms. More... | |
| virtual void | reset_all () |
| Comparison operator for algorithms. More... | |
| double & | fitness () |
| Get fitness (read-write) More... | |
| double | fitness () const |
| Get fitness (read-only) More... | |
| Genotype & | genes () |
| Get genes (read-write) More... | |
| const Genotype & | genes () const |
| Get genes (read-only) More... | |
Protected Attributes | |
| double | m_fitness |
| Fitness value. | |
| Genotype | m_genes |
| Genetic material; could be almost anything. | |
Additional Inherited Members | |
 Static Protected Member Functions inherited from libevocosm::globals | |
| static size_t | rand_index (size_t n) |
| Static function to allow use of g_random function pointer in random_shuffle. | |
| static void | set_random_seed (uint32_t a_seed) |
| Set the seed for the random number generator. | |
| static uint32_t | get_seed () |
| Set the seed for the random number generator. | |
| static std::string | version () |
| Get version number. | |
| Static Protected Attributes inherited from libevocosm::globals | |
| static prng | g_random |
| A shared random number generator. | |
| static std::string | g_version |
| Version number. | |
Detailed Description
template<typename Genotype>
class libevocosm::organism< Genotype >
An organism is a solution to a problem posed by a fitness landscape; it has "genes" that define its behavior, and a fitness value assigned during fitness testing.
Evocosm provides the freedom to define organisms as anything: bit strings, floating-point numbers, finite state machines, LISP programs, or external robots controlled via radio waves.
- Parameters
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Genotype - The type of genes for this organism class
Constructor & Destructor Documentation
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Creates a new organism, with default genes and zero fitness.
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Creates a new organism with specific genes.
- Parameters
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a_value - Gene value for the new organism
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Creates a new object identical to an existing one.
- Parameters
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a_source - The source object
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Creates a new object identical to an existing one.
- Parameters
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a_parent1 - First parent object a_parent2 - Second parent object
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A virtual destructor. By default, it does nothing; this is a placeholder that identifies this class as a potential base, ensuring that objects of a derived class will have their destructors called if they are destroyed through a base-class pointer.
Member Function Documentation
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Fitness is assigned by the landscape in which an organism is tested. A scaler object may alter fitness values after testing; a selector uses fitness to determine which organisms survive from one generation to the next, and a reproducer creates new organisms from parents selected by fitness.
Giving direct access to a member violates encapsulation, but it vastly simplifies the numerous functions that manipulate organisms.
- Returns
- Fitness for this organism
- See also
- landscape, scaler, selector, reproducer
References libevocosm::organism< Genotype >::m_fitness.
Referenced by libevocosm::scaler< OrganismType >::invert().
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Fitness is assigned by the landscape in which an organism is tested. A scaler object may alter fitness values after testing; a selector uses fitness to determine which organisms survive from one generation to the next, and a reproducer creates new organisms from parents selected by fitness.
Giving direct access to a member violates encapsulation, but it vastly simplifies the numerous functions that manipulate organisms.
- Returns
- Fitness for this organism
- See also
- landscape, scaler, selector, reproducer
References libevocosm::organism< Genotype >::m_fitness.
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Genes define an organism's behavior in a fitness landscape. An initial population usually (but not always) contains organisms with random genes; a landscape tests the behavior defined by genes to calculate the fitness of an organism. A reproducer will create children from the genes of their parents, and a mutator may make random changes in those genes.
- Returns
- Genes encapsulated by this organism
- See also
- landscape, mutator, reproducer
References libevocosm::organism< Genotype >::m_genes.
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Genes define an organism's behavior in a fitness landscape. An initial population usually (but not always) contains organisms with random genes; a landscape tests the behavior defined by genes to calculate the fitness of an organism. A reproducer will create children from the genes of their parents, and a mutator may make random changes in those genes.
- Returns
- Genes encapsulated by this organism
- See also
- landscape, mutator, reproducer
References libevocosm::organism< Genotype >::m_genes.
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Many Standard C++ algorithms require a "less than" comparison operator for container elements.
- Parameters
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a_right - Right hand argument for less than operator
References libevocosm::organism< Genotype >::m_fitness.
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Assigns an existing object the state of another.
- Parameters
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a_source - The source object
- Returns
- A reference to this
References libevocosm::organism< Genotype >::m_fitness, and libevocosm::organism< Genotype >::m_genes.
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Resets all data in an organisim to the initial (or startup) state, including setting the fitness to zero. Derived classes should override this method to "clear" any data.
The documentation for this class was generated from the following file: