org.coinor.examples.scalable
Class LuksanVlcek1

java.lang.Object
  org.coinor.Ipopt
      org.coinor.examples.scalable.Scalable
          org.coinor.examples.scalable.LuksanVlcek1

public class LuksanVlcek1
extends Scalable

Implementation of Example 5.1 from "Sparse and Parially Separable Test Problems for Unconstrained and Equality Constrained Optimization" by L. Luksan and J. Vlcek.

This code was based on Ipopt file with same name.

Author:

Rafael de Pelegrini Soares

Field Summary

Fields inherited from class org.coinor.Ipopt

ACCEPTABLE_LEVEL, C_STYLE, DIVERGING_ITERATES, DLLNAME, DLLPATH, ERROR_IN_STEP_COMPUTATION, FORTRAN_STYLE, INFEASIBLE_PROBLEM, INSUFFICIENT_MEMORY, INTERNAL_ERROR, INVALID_NUMBER_DETECTED, INVALID_OPTION, INVALID_PROBLEM_DEFINITION, ITERATION_EXCEEDED, KEY_ACCEPTABLE_COMPL_INF_TOL, KEY_ACCEPTABLE_CONSTR_VIOL_TOL, KEY_ACCEPTABLE_DUAL_INF_TOL, KEY_ACCEPTABLE_TOL, KEY_BARRIER_TOL_FACTOR, KEY_BOUND_RELAX_FACTOR, KEY_COMPL_INF_TOL, KEY_CONSTR_VIOL_TOL, KEY_DERIVATIVE_TEST, KEY_DERIVATIVE_TEST_PRINT_ALL, KEY_DERIVATIVE_TEST_TOL, KEY_DUAL_INF_TOL, KEY_FILE_PRINT_LEVEL, KEY_HESSIAN_APPROXIMATION, KEY_LIMITED_MEMORY_MAX_HISTORY, KEY_LINEAR_SOLVER, KEY_MAX_ITER, KEY_MU_STRATEGY, KEY_OBJ_SCALING_FACTOR, KEY_OUTPUT_FILE, KEY_PRINT_LEVEL, KEY_PRINT_USER_OPTIONS, KEY_TOL, NON_IPOPT_EXCEPTION, NOT_ENOUGH_DEGREES_OF_FRE, RESTORATION_FAILED, SEARCH_DIRECTION_TOO_SMALL, SOLVE_SUCCEEDED, UNRECOVERABLE_EXCEPTION, USER_REQUESTED_STOP

Constructor Summary

LuksanVlcek1(java.lang.String name, double gl, double gu)
Constructor.

Method Summary

boolean

initialize(int n) In this function all problem sizes, bounds and initial guess should be initialized.

Methods inherited from class org.coinor.examples.scalable.Scalable

create, getInitialGuess, toString

Methods inherited from class org.coinor.Ipopt

addIntOption, addNumOption, addStrOption, create, dispose, finalize, getMultConstraints, getMultLowerBounds, getMultUpperBounds, getObjVal, getStatus, openOutputFile, setProblemScaling, solve

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LuksanVlcek1

public LuksanVlcek1(java.lang.String name,
                    double gl,
                    double gu)

Constructor. Here, gl and gu are the bounds for the constraints. The original formulation is obtained by setting gl and gu to zero. Using gl lower than gu allows the obtain a problem formulation with inequality constraints.

Method Detail

initialize

public boolean initialize(int n)

Description copied from class: Scalable

In this function all problem sizes, bounds and initial guess should be initialized.

Specified by:

initialize in class Scalable

Parameters:

n - the problem size

Returns:

true if the given size is valid for this problem