net.sf.tweety.math.opt.solver

Class ApacheCommonsNonLinearConjugateGradientOptimizer

java.lang.Object

net.sf.tweety.math.opt.Solver

net.sf.tweety.math.opt.solver.ApacheCommonsNonLinearConjugateGradientOptimizer

public class ApacheCommonsNonLinearConjugateGradientOptimizer
extends Solver

This class is a wrapper for the Apache Commons Math3 Non-Linear Conjugate Gradient Optimizer. See https://commons.apache.org/proper/commons-math/.

NOTE: this solver does not allow any constraints, box constraints of variables are ignored!

Author:

Matthias Thimm

Field Summary

Fields

Modifier and Type	Field and Description
private int	maxEval The maximum number of evaluations.
private double	precision The precision

Constructor Summary

Constructors

Constructor and Description
ApacheCommonsNonLinearConjugateGradientOptimizer(int maxEval, double precision) Creates a new solver.

Method Summary

Modifier and Type	Method and Description
static boolean	isInstalled()
java.util.Map<Variable,Term>	solve(ConstraintSatisfactionProblem problem) Computes a solution to the given constraint satisfaction or optimization problem, i.e.

Methods inherited from class net.sf.tweety.math.opt.Solver

getDefaultGeneralSolver, getDefaultIntegerLinearSolver, getDefaultLinearSolver, hasDefaultGeneralSolver, hasDefaultIntegerLinearSolver, hasDefaultLinearSolver, setDefaultGeneralSolver, setDefaultIntegerLinearSolver, setDefaultLinearSolver

Methods inherited from class java.lang.Object

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

Field Detail

maxEval

private int maxEval

The maximum number of evaluations.

precision

private double precision

The precision

Constructor Detail

ApacheCommonsNonLinearConjugateGradientOptimizer

public ApacheCommonsNonLinearConjugateGradientOptimizer(int maxEval,
                                                        double precision)

Creates a new solver.

Parameters:

maxEval - the maximum number of evaluations.

precision - the precision.

Method Detail

solve

public java.util.Map<Variable,Term> solve(ConstraintSatisfactionProblem problem)
                                   throws GeneralMathException

Description copied from class: Solver

Computes a solution to the given constraint satisfaction or optimization problem, i.e. a mapping from variables of the problem to terms.

Specified by:

solve in class Solver

Parameters:

problem - the actual problem

Returns:

a mapping from variables of the problem to terms.

Throws:

GeneralMathException - if something went wrong.

isInstalled

public static boolean isInstalled()
                           throws java.lang.UnsupportedOperationException

Throws:

java.lang.UnsupportedOperationException