genopt.algorithm

Class PSOCC

java.lang.Object

genopt.algorithm.Optimizer

genopt.algorithm.util.pso.ModelPSO

genopt.algorithm.PSOCC

Direct Known Subclasses:

PSOCCMesh

public class PSOCC
extends ModelPSO

Class for minimizing a function the particle swarm optimization algorithm with constriction coefficient for the particle location update equation.

This project was carried out at:

• Lawrence Berkeley National Laboratory (LBNL), Simulation Research Group,

and supported by

• the U.S. Department of Energy (DOE),
• the Swiss Academy of Engineering Sciences (SATW),
• the Swiss National Energy Fund (NEFF), and
• the Swiss National Science Foundation (SNSF)

GenOpt Copyright (c) 1998-2021, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from the U.S. Dept. of Energy). All rights reserved.

Version:

GenOpt(R) 3.1.1 (March 24, 2016)

Author:

Michael Wetter

Field Summary

Fields

Modifier and Type	Field and Description
private double	ConFac Constriction Factor

Fields inherited from class genopt.algorithm.util.pso.ModelPSO

CogAcc, CurPop, dimCon, dimDis, dimF, GloBes, IGen, LenBitStr, LocBes, MaxVelDis, NumGen, NumPar, RanGen, SocAcc, VelCon, VelDis, VelMaxCon

Fields inherited from class genopt.algorithm.Optimizer

done, EXCLUDING, FS, INCLUDING, LS, MAINITERATION, ORIGINAL, SUBITERATION, TRANSFORMED

Constructor Summary

Constructors

Constructor and Description
PSOCC(GenOpt genOptData) Constructor

Method Summary

Modifier and Type	Method and Description
protected void	setConstrictionCoefficientParameter(double conGai) Sets the constriction coefficient parameter
protected void	updateVelocity() Updates the particle velocity

Methods inherited from class genopt.algorithm.util.pso.ModelPSO

clampVelocity, run

Methods inherited from class genopt.algorithm.Optimizer

algorithmRequiresUsageOfStepNumber, appendToOutputListing, checkMaxIteration, checkObjectiveFunctionValue, ensureOnlyContinuousParameters, ensureOnlyDiscreteParameters, getAbsAccuracyFunction, getDimensionContinuous, getDimensionDiscrete, getDimensionF, getDimensionX, getDiscreteValueDouble0, getDx, getDx0, getF, getF, getIndex0, getIndex0, getInputValueBoolean, getInputValueDouble, getInputValueDouble, getInputValueInteger, getInputValueInteger, getInputValueString, getInputValueString, getKindOfConstraint, getL, getLengthDiscrete, getMainIterationNumber, getMaximumThreadPoolSize, getMaxIterationNumber, getMinimumPoint, getMode, getObjectiveFunctionName, getOutputPath, getPointerToEqualPoints, getRelAccuracyFunction, getSimulationNumber, getStepNumber, getU, getVariableNameContinuous, getVariableNameDiscrete, getX0, getX0, goToEndOfCommandFile, increaseStepNumber, increaseStepNumber, isFeasible, isNextToken, maxIterationReached, mustStopOptimization, print, println, replace, report, reportCurrentLowestPoint, reportMinimum, resetStepNumber, roundCoordinates, run, setInfo, setMode, setNumberOfMatchingResults, setToFeasibleCoordinate, setToFeasibleCoordinate, setWarning, simulate, throwInputError, useStepNumber, writeStepNumber

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ConFac

private double ConFac

Constriction Factor

Constructor Detail

PSOCC

public PSOCC(GenOpt genOptData)
      throws OptimizerException,
             java.io.IOException,
             java.lang.Exception,
             InputFormatException

Constructor

Parameters:

genOptData - a reference to the GenOpt object.
Note: the object is used as a reference. Hence, the data of GenOpt are modified by this Class.

Throws:

OptimizerException - if an OptimizerException occurs or if the user required to stop GenOpt

SimulationInputException - if an error in writing the simulation input file occurs

java.lang.NoSuchMethodException - if a method that should be invoked could not be found

java.lang.IllegalAccessException - if an invoked method enforces Java language access control and the underlying method is inaccessible

InvocationTargetException - if an invoked method throws an exception

java.lang.Exception - if an I/O error in the simulation input file occurs

java.io.IOException

InputFormatException

Method Detail

setConstrictionCoefficientParameter

protected final void setConstrictionCoefficientParameter(double conGai)

Sets the constriction coefficient parameter

Parameters:

conGai - gain for constriction factor

updateVelocity

protected void updateVelocity()

Updates the particle velocity

Specified by:

updateVelocity in class ModelPSO