SimpleGA Class Reference

Classes | |
class | evaluationThread |
Public Member Functions | |
SimpleGA () | |
Constructor. | |
virtual | ~SimpleGA () |
Destructor. | |
virtual void | configure (ConfigurationParameters ¶ms, QString prefix) |
Configure the object using the ConfigurationParameters specified. | |
virtual QVector< Evaluation * > | evaluationPool () |
Return the Evaluation Pool containing the Evaluations used. | |
virtual Evaluation * | evaluationPrototype () |
Returns the Evaluation object used as prototype to eventually generate other evaluators. | |
virtual void | finalize () |
Finalize the Genetic Algorithm Process. | |
virtual void | gaStep () |
Execute a single minor step and return. | |
virtual void | initialize () |
Initializes the Genetic Algorithm Process and sets current generation to zero. | |
int | numThreads () |
Return the number of thread currently used. | |
Reproduction * | reproduction () |
Return the Reproduction operator. | |
virtual void | save (ConfigurationParameters ¶ms, QString prefix) |
Save the actual status of parameters into the ConfigurationParameters object passed. | |
void | setEvaluation (Evaluation *fitfunc) |
Set the fitness function to use. | |
void | setNumThreads (int numThreads) |
Set the number of thread to use; or in other words the number of parallel evaluation of Genotypes. | |
void | setReproduction (Reproduction *reproduct) |
Set the Reproduction operator to use. | |
virtual void | skipEvaluation () |
Skip the evaluation phase and put the algorithm in the state just after the evaluation. | |
Static Public Member Functions | |
static void | describe (QString type) |
Add to Factory::typeDescriptions() the descriptions of all parameters and subgroups. | |
Protected Types | |
enum | GAPhases { initEvaluation, evaluating, nextGeneration_pass1, nextGeneration_pass2, endEvolution } |
used for manage GA cycle More... | |
Protected Attributes | |
GAPhases | currPhase |
current Phase | |
Evaluation * | fitfunc |
fitness function | |
bool | isFinalized |
True if SimpleGA is finalized. | |
bool | isInitialized |
True if SimpleGA is initialized. | |
Reproduction * | reprod |
reproduction operator |
Detailed Description
- Description
- SimpleGA implements a Simple Genetic Algorithm, some features are:
- you can customize Reproduction process using setReproduction
- you can customize, of course, the Fitness function using setEvaluation
- it use a multi-thread approach for parallel evaluation of Genotypes (see numThreads)
- Warnings
Definition at line 43 of file simplega.h.
Member Enumeration Documentation
enum GAPhases [protected] |
used for manage GA cycle
Definition at line 106 of file simplega.h.
Constructor & Destructor Documentation
SimpleGA | ( | ) |
Constructor.
Definition at line 31 of file simplega.cpp.
References SimpleGA::currPhase, SimpleGA::fitfunc, SimpleGA::isFinalized, SimpleGA::isInitialized, GeneticAlgo::numGens, and SimpleGA::reprod.
~SimpleGA | ( | ) | [virtual] |
Member Function Documentation
void configure | ( | ConfigurationParameters & | params, |
QString | prefix | ||
) | [virtual] |
Configure the object using the ConfigurationParameters specified.
- Parameters:
-
params the object with configuration parameters prefix the group in which parameters are expected to be (this is terminated by a separator character). We expect to receive as prefix the groupwhich contains all GA parameters
Implements ParameterSettableWithConfigureFunction.
Definition at line 49 of file simplega.cpp.
References SimpleGA::fitfunc, GeneticAlgo::genome(), ConfigurationParameters::getObjectFromGroup(), ConfigurationParameters::getValue(), GeneticAlgo::numGenerations(), SimpleGA::setEvaluation(), Evaluation::setGenome(), GeneticAlgo::setGenome(), GeneticAlgo::setNumGenerations(), SimpleGA::setNumThreads(), and SimpleGA::setReproduction().
void describe | ( | QString | type | ) | [static] |
Add to Factory::typeDescriptions() the descriptions of all parameters and subgroups.
Reimplemented from ParameterSettable.
Definition at line 73 of file simplega.cpp.
References ParameterSettable::addTypeDescription(), ParameterSettable::IntDescriptor::def(), ParameterSettable::Descriptor::describeInt(), ParameterSettable::Descriptor::describeSubgroup(), ParameterSettable::SubgroupDescriptor::help(), ParameterSettable::IntDescriptor::help(), ParameterSettable::IsMandatory, ParameterSettable::IntDescriptor::limits(), ParameterSettable::SubgroupDescriptor::props(), and ParameterSettable::SubgroupDescriptor::type().
QVector< Evaluation * > evaluationPool | ( | ) | [virtual] |
Return the Evaluation Pool containing the Evaluations used.
Implements GeneticAlgo.
Definition at line 110 of file simplega.cpp.
Evaluation * evaluationPrototype | ( | ) | [virtual] |
Returns the Evaluation object used as prototype to eventually generate other evaluators.
This object could be or could be not used to compute the fitness of genotypes (depending on the specific genetic algorithm)
Implements GeneticAlgo.
Definition at line 105 of file simplega.cpp.
References SimpleGA::fitfunc.
void finalize | ( | ) | [virtual] |
Finalize the Genetic Algorithm Process.
Implements GeneticAlgo.
Definition at line 228 of file simplega.cpp.
References GeneticAlgo::evolutionEnd, SimpleGA::isFinalized, and SimpleGA::isInitialized.
Referenced by SimpleGA::gaStep().
void gaStep | ( | ) | [virtual] |
Execute a single minor step and return.
Implements GeneticAlgo.
Definition at line 154 of file simplega.cpp.
References SimpleGA::currPhase, GeneticAlgo::evaluationDone, SimpleGA::finalize(), SimpleGA::fitfunc, GeneticAlgo::generation(), GeneticAlgo::genome(), GeneticAlgo::numGens, Genotype::rankGreaterThanComparator(), SimpleGA::reprod, Reproduction::reproduction(), GeneticAlgo::setGeneration(), Evaluation::setGenome(), GeneticAlgo::setGenome(), Genome::size(), and GeneticAlgo::updateStats().
void initialize | ( | ) | [virtual] |
Initializes the Genetic Algorithm Process and sets current generation to zero.
Implements GeneticAlgo.
Definition at line 127 of file simplega.cpp.
References SimpleGA::currPhase, GeneticAlgo::evaluationDone, GeneticAlgo::evolutionEnd, SimpleGA::fitfunc, SimpleGA::isFinalized, SimpleGA::isInitialized, SimpleGA::reprod, and GeneticAlgo::setGeneration().
int numThreads | ( | ) |
Return the number of thread currently used.
Definition at line 96 of file simplega.cpp.
Referenced by SimpleGA::save(), and SimpleGA::setNumThreads().
Reproduction * reproduction | ( | ) |
Return the Reproduction operator.
Definition at line 123 of file simplega.cpp.
References SimpleGA::reprod.
Referenced by SimpleGA::save().
void save | ( | ConfigurationParameters & | params, |
QString | prefix | ||
) | [virtual] |
Save the actual status of parameters into the ConfigurationParameters object passed.
- Parameters:
-
params the configuration parameters object on which save actual parameters prefix the prefix to use to access the object configuration parameters.
Implements ParameterSettable.
Definition at line 61 of file simplega.cpp.
References ConfigurationParameters::createParameter(), ConfigurationParameters::createSubGroup(), SimpleGA::fitfunc, GeneticAlgo::genome(), GeneticAlgo::numGenerations(), SimpleGA::numThreads(), SimpleGA::reproduction(), Genome::save(), and ParameterSettable::save().
void setEvaluation | ( | Evaluation * | fitfunc | ) |
Set the fitness function to use.
Definition at line 100 of file simplega.cpp.
References SimpleGA::fitfunc, and Evaluation::setGA().
Referenced by SimpleGA::configure().
void setNumThreads | ( | int | numThreads | ) |
Set the number of thread to use; or in other words the number of parallel evaluation of Genotypes.
Definition at line 82 of file simplega.cpp.
References SimpleGA::fitfunc, SimpleGA::isFinalized, SimpleGA::isInitialized, and SimpleGA::numThreads().
Referenced by SimpleGA::configure().
void setReproduction | ( | Reproduction * | reproduct | ) |
Set the Reproduction operator to use.
Definition at line 118 of file simplega.cpp.
References SimpleGA::reprod, and Reproduction::setGA().
Referenced by SimpleGA::configure().
void skipEvaluation | ( | ) | [virtual] |
Skip the evaluation phase and put the algorithm in the state just after the evaluation.
This can be used after restarting an interrupted evolution to prevent re-evaluation of the genome that was loaded from file.
Implements GeneticAlgo.
Definition at line 218 of file simplega.cpp.
References SimpleGA::currPhase, GeneticAlgo::evaluationDone, GeneticAlgo::generation(), and GeneticAlgo::numGens.
Member Data Documentation
current Phase
Definition at line 108 of file simplega.h.
Referenced by SimpleGA::gaStep(), SimpleGA::initialize(), SimpleGA::SimpleGA(), and SimpleGA::skipEvaluation().
Evaluation* fitfunc [protected] |
fitness function
Definition at line 102 of file simplega.h.
Referenced by SimpleGA::configure(), SimpleGA::evaluationPrototype(), SimpleGA::gaStep(), SimpleGA::initialize(), SimpleGA::save(), SimpleGA::setEvaluation(), SimpleGA::setNumThreads(), SimpleGA::SimpleGA(), and SimpleGA::~SimpleGA().
bool isFinalized [protected] |
True if SimpleGA is finalized.
Definition at line 112 of file simplega.h.
Referenced by SimpleGA::finalize(), SimpleGA::initialize(), SimpleGA::setNumThreads(), and SimpleGA::SimpleGA().
bool isInitialized [protected] |
True if SimpleGA is initialized.
Definition at line 110 of file simplega.h.
Referenced by SimpleGA::finalize(), SimpleGA::initialize(), SimpleGA::setNumThreads(), and SimpleGA::SimpleGA().
Reproduction* reprod [protected] |
reproduction operator
Definition at line 104 of file simplega.h.
Referenced by SimpleGA::gaStep(), SimpleGA::initialize(), SimpleGA::reproduction(), SimpleGA::setReproduction(), and SimpleGA::SimpleGA().
The documentation for this class was generated from the following files:
- ga/include/gas/simplega.h
- ga/src/gas/simplega.cpp