Differential evolution (DE) optimization algorithm (see e.g. http://en.wikipedia.org/wiki/Differential_evolution) More...

#include <AlgDifferentialEvolution.h>

Inheritance diagram for DifferentialEvolution:

Public Member Functions
bool	advanceGeneration (StateP state, DemeP deme)
	Perform a single generation on a single deme. More...

bool	initialize (StateP state)
	Initialize the algorithm, read parameters from the system, do a sanity check. More...

void	createDonorVectors (DemeP deme, StateP state)
	create donor vectors (the same number as the population size) More...

void	crossover (DemeP deme, uint index, StateP state)
	cross donor vectors with population members to create trial vectors More...

void	registerParameters (StateP state)
	Register algorithm's parameters (if any). More...

Public Member Functions inherited from Algorithm
std::string	getName ()
	Get algorithm name. Each algorithm is uniquely identified with its name. More...

virtual bool	isParallel ()
	Is algorithm parallel (false by default for all algorithms not inheriting ParallelAlgorithm class). More...

bool	isImplicitParallel ()
	Is algorithm run in implicit parallel mode (in development, see tutorial). More...

virtual bool	advanceGeneration (StateP, DemeP)=0
	Perform a single generation on a single deme. More...

virtual bool	initialize (StateP)
	Initialize the algorithm, read parameters from the system, do a sanity check. More...

virtual void	registerParameters (StateP)
	Register algorithm's parameters (if any). More...

virtual bool	initializePopulation (StateP)
	Evaluate initial population (called by State::run before evolution starts). More...

virtual void	read ()

virtual bool	advanceGeneration (StateP state)
	Perform one generation of the algorithm on the whole population. More...

void	evaluate (IndividualP ind)
	Helper function: evaluate an individual. More...

uint	mutate (const std::vector< IndividualP > &pool)
	Helper function: send a vector of individuals to mutation. More...

uint	mutate (const IndividualP victim)
	Helper function: send a single individual to mutation. More...

void	replaceWith (IndividualP oldInd, IndividualP newInd)
	Helper function: replace an individual in current deme. More...

void	replaceWith (uint oldIndId, IndividualP newInd)
	Helper function: replace an individual at given position in current deme. More...

void	registerParallelParameters (StateP state)
	used only in parallel ECF More...

bool	initializeParallel (StateP state)
	used only in parallel ECF More...

virtual bool	advanceGeneration (StateP state)
	Parallel ECF: Perform one generation of the algorithm.

virtual void	bcastTermination (StateP state)
	Parallel ECF: broadcast termination to worker processes. More...

void	registerParallelParameters (StateP state)
	Parallel ECF: Register parameters for implicit parallel algorithm version.

bool	initializeParallel (StateP state)
	Parallel ECF: Initialize implicit parallel algorithm.

void	initializeImplicit (StateP state)
	Parallel ECF: Initialize implicit parallel mode. More...

bool	implicitParallelOperate (StateP state)
	Parallel ECF: Worker processes in implicit parallel algorithm. More...

void	evaluate (IndividualP ind)
	Parallel ECF: evaluate an individual. More...

void	implicitEvaluate (IndividualP ind)
	Parallel ECF: implicitly evaluate an individual (store for later evaluation in implicit parallel version). More...

uint	mutate (const IndividualP victim)
	Parallel ECF: immediately mutate an individual. More...

uint	mutate (const std::vector< IndividualP > &pool)
	Parallel ECF: mutate a vector of individuals. More...

uint	implicitMutate (IndividualP ind)
	Parallel ECF: implicitly mutate an individual (store for later mutation in implicit parallel version). More...

void	replaceWith (IndividualP oldInd, IndividualP newInd)
	Parallel ECF: replace an individual in a deme.

void	replaceWith (uint oldIndId, IndividualP newInd)
	Parallel ECF: replace an individual at given position in a deme. More...

bool	mate (IndividualP p1, IndividualP p2, IndividualP child)
	Helper function: crossover two individuals. More...

IndividualP	copy (IndividualP source)
	Helper function: make a copy of an individual. More...

bool	removeFrom (IndividualP victim, std::vector< IndividualP > &pool)
	Helper function: remove victim from pool of individual pointers. More...

bool	isMember (IndividualP single, std::vector< IndividualP > &pool)
	Helper function: check if individual is in the pool. More...

Protected Attributes
double	Fconst_
	scaling constant More...

double	CR_
	crossover rate More...

bool	bounded_
	constrained or not More...

SelectionOperatorP	selRandomOp

std::vector< IndividualP >	donor_vector
	vector of donor solutions (individuals) More...

Protected Attributes inherited from Algorithm
DemeP	activeDeme_

std::string	name_
	algorithm name More...

bool	bImplicitParallel_
	implicit parallel flag More...

std::vector< SelectionOperatorP >	selectionOp
	sel. operators used by algorithm More...

std::vector< IndividualP >	requests_

std::vector< IndividualP >	stored_
	individual vectors for implicit evaluation More...

std::vector< uint >	requestIds_
	individual indexes for implicit evaluation More...

std::vector< IndividualP >	demeCopy_

std::vector< IndividualP >	myJob_
	worker's individual vector More...

CommunicatorP	comm_

uint	jobSize_

uint	totalEvaluations_

uint	wastedEvaluations_

bool	bImplicitEvaluation_
	implicit evaluation flag More...

bool	bImplicitMutation_
	implicit mutation flag More...

bool	bSynchronized_
	is implicit paralelization synchronous More...

SelectionOperatorP	selBestOp

std::vector< IndividualP >	requestsMut_

std::vector< IndividualP >	receivedMut_
	individual vectors for implicit mutation More...

std::vector< uint >	requestMutIds_
	individual indexes for implicit mutation More...

IndividualP	currentBest_

std::vector< IndividualP >	storedInds_

std::vector< std::vector< IndividualP > >	sentInds_
	individuals sent for evaluation More...

std::vector< bool >	isConsistent_
	is individual (genotype-fitness pair) consistent More...

Additional Inherited Members
Public Attributes inherited from Algorithm
CrossoverP	crossover_
	sptr to container of crossover operators (set by the system) More...

MutationP	mutation_
	sptr to container of mutation operators (set by the system) More...

EvaluateOpP	evalOp_
	sptr to evaluation operator (set by the system) More...

StateP	state_

Protected Member Functions inherited from Algorithm
bool	registerParameter (StateP state, std::string name, voidP value, enum ECF::type T, std::string description="")
	Helper function: register a single parameter with the system. More...

voidP	getParameterValue (StateP state, std::string name)
	Helper function: get parameter value from the system. More...

void	storeIndividual (IndividualP)
	stores the individual (if it is consistent), resets consistency flag More...

void	storeGenotypes (std::vector< IndividualP > &)
	adds genotypes of individuals to 'sent' repository More...

void	setConsistency (IndividualP)
	denotes current individual as consistent More...

void	restoreIndividuals (std::vector< uint >)
	restores individuals whose fitness is received More...

void	restorePopulation ()
	restores inconsistent individuals to last consistent state More...

Detailed Description

Differential evolution (DE) optimization algorithm (see e.g. http://en.wikipedia.org/wiki/Differential_evolution)

DE algorithm accepts only a single FloatingPoint genotype (vector of real values).

Definition at line 12 of file AlgDifferentialEvolution.h.

Constructor & Destructor Documentation

◆ DifferentialEvolution()

DifferentialEvolution::DifferentialEvolution ( )

Definition at line 9 of file AlgDifferentialEvolution.cpp.

Member Function Documentation

◆ advanceGeneration()

bool DifferentialEvolution::advanceGeneration	(	StateP	,
		DemeP
	)

virtual

Perform a single generation on a single deme.

Must be implemented by a specific algorithm class

Implements Algorithm.

Definition at line 58 of file AlgDifferentialEvolution.cpp.

◆ createDonorVectors()

void DifferentialEvolution::createDonorVectors	(	DemeP	deme,
		StateP	state
	)

create donor vectors (the same number as the population size)

Definition at line 88 of file AlgDifferentialEvolution.cpp.

◆ crossover()

void DifferentialEvolution::crossover	(	DemeP	deme,
		uint	index,
		StateP	state
	)

cross donor vectors with population members to create trial vectors

Definition at line 131 of file AlgDifferentialEvolution.cpp.

◆ initialize()

bool DifferentialEvolution::initialize ( StateP )

virtual

Initialize the algorithm, read parameters from the system, do a sanity check.

Called by the system before the algorithm starts (Algorithm::advanceGeneration)

Reimplemented from Algorithm.

Definition at line 31 of file AlgDifferentialEvolution.cpp.

◆ registerParameters()

void DifferentialEvolution::registerParameters ( StateP )

virtual

Register algorithm's parameters (if any).

Called by the system before algorithm initialization (Algorithm::initialize)

Reimplemented from Algorithm.

Definition at line 22 of file AlgDifferentialEvolution.cpp.

Member Data Documentation

◆ bounded_

bool DifferentialEvolution::bounded_

protected

constrained or not

Definition at line 25 of file AlgDifferentialEvolution.h.

◆ CR_

double DifferentialEvolution::CR_

protected

crossover rate

Definition at line 24 of file AlgDifferentialEvolution.h.

◆ donor_vector

std::vector<IndividualP> DifferentialEvolution::donor_vector

protected

vector of donor solutions (individuals)

Definition at line 27 of file AlgDifferentialEvolution.h.

◆ Fconst_

double DifferentialEvolution::Fconst_

protected

scaling constant

Definition at line 23 of file AlgDifferentialEvolution.h.

◆ selRandomOp

SelectionOperatorP DifferentialEvolution::selRandomOp

protected

Definition at line 26 of file AlgDifferentialEvolution.h.

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

D:/Projekt/ECF_trunk/ECF/AlgDifferentialEvolution.h
D:/Projekt/ECF_trunk/ECF/AlgDifferentialEvolution.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DifferentialEvolution()

Member Function Documentation

◆ advanceGeneration()

◆ createDonorVectors()

◆ crossover()

◆ initialize()

◆ registerParameters()

Member Data Documentation

◆ bounded_

◆ CR_

◆ donor_vector

◆ Fconst_

◆ selRandomOp