Selector::TruncationSelector Class Reference

Selection class that will do a selection with a truncation. This is the classic selection methods used in the earliest works of TPGs. More...

#include <truncationSelector.h>

Inheritance diagram for Selector::TruncationSelector:

Public Member Functions
	TruncationSelector (std::shared_ptr< TPG::TPGGraph > graph, const Learn::LearningParameters &params)
	Constructor for Selector.
virtual void	doSelection (std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > &results, Mutator::RNG &rng) override
	override of doSelection method
Public Member Functions inherited from Selector::Selector
	Selector (std::shared_ptr< TPG::TPGGraph > graph, const Learn::LearningParameters &params)
	Constructor for Selector.
virtual void	launchSelection (std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > &results, Mutator::RNG &rng)
	This method execute the doSelection method.
virtual std::shared_ptr< SelectionMetrics >	createSelectionMetrics ()
virtual void	keepBestPolicy ()
	This method keeps only the bes tRoot policy in the TPGGraph.
virtual void	updateEvaluationRecords (const std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > &results)
	Update the bestRoot and resultsPerRoot attributes.
virtual void	updateResultsPerRoot (const std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > &results)
	Update the resultsPerRoot.
virtual void	updateBestRoot (const std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > &results)
	Update the bestRoot attribute.
virtual const std::pair< const TPG::TPGVertex *, std::shared_ptr< Learn::EvaluationResult > > &	getBestRoot () const
	Get the best root TPG::Vertex encountered since the last init.
virtual std::shared_ptr< TPG::TPGGraph >	getGraph ()
	Getter for the TPGGraph built by the LearningAgent.
virtual void	forgetPreviousResults ()
	This method resets the previous registered scores per root.
virtual const std::map< const TPG::TPGVertex *, std::shared_ptr< Learn::EvaluationResult > > &	getResultsPerRoot () const
	Return the resultsPerRoot map.
virtual const SelectionContext &	updateContext ()
	Update the SelectionContext structure and return it.
virtual void	updateAfterPopulate ()
	Method to call at the end of TPGMutator::populateTPG.

Additional Inherited Members
Protected Attributes inherited from Selector::Selector
std::shared_ptr< TPG::TPGGraph >	graph
	TPGGraph on which the TPGVertex can be selected or deleted.
const Learn::LearningParameters &	params
	Parameters for the selection.
std::pair< const TPG::TPGVertex *, std::shared_ptr< Learn::EvaluationResult > >	bestRoot {nullptr, nullptr}
std::map< const TPG::TPGVertex *, std::shared_ptr< Learn::EvaluationResult > >	resultsPerRoot
	Map associating root TPG::TPGVertex to their EvaluationResult.
SelectionContext	context
	context used by the TPGMutator to populate the TPGGraph.

Detailed Description

Selection class that will do a selection with a truncation. This is the classic selection methods used in the earliest works of TPGs.

Constructor & Destructor Documentation

TruncationSelector()

Selector::TruncationSelector::TruncationSelector ( std::shared_ptr< TPG::TPGGraph > graph, const Learn::LearningParameters & params )

inline

Constructor for Selector.

Parameters

[in]	graph	shared pointer of the graph on which the selection is done.
[in]	params	parameters used by the Selector.

Member Function Documentation

doSelection()

void Selector::TruncationSelector::doSelection ( std::multimap< std::shared_ptr< Learn::EvaluationResult >, const TPG::TPGVertex * > & results, Mutator::RNG & rng )

overridevirtual

override of doSelection method

Removed the worst agents from the population with a truncation process where the worst proportion set in the parameters is deleted.

Parameters

[in,out]	results	a multimap containing root TPGVertex associated to their score during an evaluation.
[in]	rng	Random Number Generator used in the mutation process.

Reimplemented from Selector::Selector.

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

• D:/a/gegelati/gegelati/gegelatilib/include/selector/truncationSelector.h
• D:/a/gegelati/gegelati/gegelatilib/src/selector/truncationSelector.cpp