genopt.algorithm.util.linesearch

Class ModelFiniteIntervalSearcher

java.lang.Object

genopt.algorithm.Optimizer

genopt.algorithm.util.linesearch.ModelFiniteIntervalSearcher

Direct Known Subclasses:

Fibonacci, GoldenSection

public abstract class ModelFiniteIntervalSearcher
extends Optimizer

Abstract class for doing a one-dimensional minimization in a finite interval.
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) 1998-2021, 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
protected IntervalDivider	id The IntervalDivider that performs the line search

Fields inherited from class genopt.algorithm.Optimizer

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

Constructor Summary

Constructors

Constructor and Description
ModelFiniteIntervalSearcher(GenOpt genOptData) Constructor

Method Summary

Modifier and Type	Method and Description
protected void	initialize() Initializes the IntervalDivider instance
int	run(Point xIni) Runs the optimization process until a termination criteria is satisfied

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

id

protected IntervalDivider id

The IntervalDivider that performs the line search

Constructor Detail

ModelFiniteIntervalSearcher

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

Constructor

Parameters:

genOptData - 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, or if independent variable does not have a lower and upper bound

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

java.lang.Exception - if an exception occurs

Method Detail

initialize

protected void initialize()
                   throws java.lang.Exception,
                          InputFormatException,
                          OptimizerException

Initializes the IntervalDivider instance

Throws:

OptimizerException

java.lang.Exception

InputFormatException

OptimizerException

run

public int run(Point xIni)
        throws OptimizerException,
               java.lang.Exception

Runs the optimization process until a termination criteria is satisfied

Specified by:

run in class Optimizer

Parameters:

xIni - initial point

Returns:

-1 if the maximum number of iteration is exceeded
+1 if the required accuracy is reached

Throws:

java.lang.Exception

OptimizerException

InputFormatException - if an InputFormatException 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

java.lang.reflect.InvocationTargetException - if an invoked method throws an exception