org.apache.commons.math3.optim

Class AbstractOptimizationProblem<PAIR>

java.lang.Object

org.apache.commons.math3.optim.AbstractOptimizationProblem<PAIR>

Type Parameters:

PAIR - Type of the point/value pair returned by the optimization algorithm.

All Implemented Interfaces:

OptimizationProblem<PAIR>

Direct Known Subclasses:

LeastSquaresFactory.LocalLeastSquaresProblem

public abstract class AbstractOptimizationProblem<PAIR>
extends java.lang.Object
implements OptimizationProblem<PAIR>

Base class for implementing optimization problems. It contains the boiler-plate code for counting the number of evaluations of the objective function and the number of iterations of the algorithm, and storing the convergence checker.

Since:

3.3

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	AbstractOptimizationProblem.MaxEvalCallback Defines the action to perform when reaching the maximum number of evaluations.
private static class	AbstractOptimizationProblem.MaxIterCallback Defines the action to perform when reaching the maximum number of evaluations.

Field Summary

Fields

Modifier and Type	Field and Description
private ConvergenceChecker<PAIR>	checker Convergence checker.
private static AbstractOptimizationProblem.MaxEvalCallback	MAX_EVAL_CALLBACK Callback to use for the evaluation counter.
private static AbstractOptimizationProblem.MaxIterCallback	MAX_ITER_CALLBACK Callback to use for the iteration counter.
private int	maxEvaluations max evaluations
private int	maxIterations max iterations

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractOptimizationProblem(int maxEvaluations, int maxIterations, ConvergenceChecker<PAIR> checker) Create an AbstractOptimizationProblem from the given data.

Method Summary

Methods

Modifier and Type	Method and Description
ConvergenceChecker<PAIR>	getConvergenceChecker() Gets the convergence checker.
Incrementor	getEvaluationCounter() Get a independent Incrementor that counts up to the maximum number of evaluations and then throws an exception.
Incrementor	getIterationCounter() Get a independent Incrementor that counts up to the maximum number of iterations and then throws an exception.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_EVAL_CALLBACK

private static final AbstractOptimizationProblem.MaxEvalCallback MAX_EVAL_CALLBACK

Callback to use for the evaluation counter.

MAX_ITER_CALLBACK

private static final AbstractOptimizationProblem.MaxIterCallback MAX_ITER_CALLBACK

Callback to use for the iteration counter.

maxEvaluations

private final int maxEvaluations

max evaluations

maxIterations

private final int maxIterations

max iterations

checker

private final ConvergenceChecker<PAIR> checker

Convergence checker.

Constructor Detail

AbstractOptimizationProblem

protected AbstractOptimizationProblem(int maxEvaluations,
                           int maxIterations,
                           ConvergenceChecker<PAIR> checker)

Create an AbstractOptimizationProblem from the given data.

Parameters:

maxEvaluations - the number of allowed model function evaluations.

maxIterations - the number of allowed iterations.

checker - the convergence checker.

Method Detail

getEvaluationCounter

public Incrementor getEvaluationCounter()

Get a independent Incrementor that counts up to the maximum number of evaluations and then throws an exception.

Specified by:

getEvaluationCounter in interface OptimizationProblem<PAIR>

Returns:

a counter for the evaluations.

getIterationCounter

public Incrementor getIterationCounter()

Get a independent Incrementor that counts up to the maximum number of iterations and then throws an exception.

Specified by:

getIterationCounter in interface OptimizationProblem<PAIR>

Returns:

a counter for the evaluations.

getConvergenceChecker

public ConvergenceChecker<PAIR> getConvergenceChecker()

Gets the convergence checker.

Specified by:

getConvergenceChecker in interface OptimizationProblem<PAIR>

Returns:

the object used to check for convergence.