tstbcqnewton.html.svn-base

OPT++

/** \page tstbcqnewton Bound-constrained Quasi-Newton method with line-search

\code

   #include <fstream>

   #include "OptBCQNewton.h"
   #include "NLF.h"
   #include "tstfcn.h"
   #include "Constraint.h"
   #include "BoundConstraint.h"
   #include "CompoundConstraint.h"
   #include "OptppArray.h"

   using NEWMAT::ColumnVector;
   using namespace OPTPP;

   void update_model(int, int, ColumnVector) {}

   int main ()
   {
      int n = 2;
      ColumnVector lower(n), upper(n);
     
      static char *status_file = {"tstbcqnewton.out"};

      lower    = -2.0; upper    =  2.0;
      Constraint bc = new BoundConstraint(n, lower, upper);
      CompoundConstraint* cc = new CompoundConstraint(bc);

      //  Create a Nonlinear problem object
      NLF1 nlp(n,rosen, init_rosen, cc);

      //  Build a Newton object and optimize 
      OptBCQNewton objfcn(&nlp, update_model);

      objfcn.setOutputFile(status_file, 0);
      objfcn.setSearchStrategy(LineSearch);
      objfcn.optimize();
      objfcn.printStatus("Solution from newton");
      objfcn.cleanup();      
   }
\endcode
<p> <a href="tstbcnips.html"> Next Section: Finite-difference nonlinear 
	interior-point method </a> |  <a href="BoundConstrainedProblems.html">
		        Back to Bound-constrained minimization </a> </p> 

Last revised <em> September 14, 2006 </em>.
*/