genopt.algorithm
Class GoldenSection

java.lang.Object
  genopt.algorithm.Optimizer
      genopt.algorithm.util.linesearch.ModelFiniteIntervalSearcher
          genopt.algorithm.GoldenSection

public class GoldenSection
extends ModelFiniteIntervalSearcher

Class for doing a one-dimensional minimization using the Golden Section algorithm.

To do the optimization, a unimodal interval of the parameter being varied must be specified. The interval is given by the lower and upper bound of the parameter specified in the command file.

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) 1998-2011, 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) 3.1.0 (December 8, 2011)

Author:

Michael Wetter

Field Summary

Fields inherited from class genopt.algorithm.util.linesearch.ModelFiniteIntervalSearcher

id

Fields inherited from class genopt.algorithm.Optimizer

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

Constructor Summary

GoldenSection(GenOpt genOptData)
Constructor

Method Summary

Methods inherited from class genopt.algorithm.util.linesearch.ModelFiniteIntervalSearcher

initialize, 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

Constructor Detail

GoldenSection

public GoldenSection(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 datas of GenOpt are modified by this Class.

Throws:

OptimizerException - if algorithm is used for problems with more than 1 independent variable

java.lang.Exception

java.io.IOException - if an I/O exception occurs

InputFormatException