simulated_annealing.cpp

/* 
* <simulated_annealing.cpp>
* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
* (C) OPAC Team, LIFL, 2002-2007
*
* Sébastien Cahon, Jean-Charles Boisson
*
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software.  You can  use,
* modify and/ or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and  rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty  and the software's author,  the holder of the
* economic rights,  and the successive licensors  have only  limited liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading,  using,  modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean  that it is complicated to manipulate,  and  that  also
* therefore means  that it is reserved for developers  and  experienced
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*/

#include <mo.h>

#include <graph.h>
#include <route.h>
#include <route_eval.h>
#include <route_init.h>

#include <two_opt.h>
#include <two_opt_rand.h>
#include <two_opt_incr_eval.h>

int
main (int __argc, char * __argv []) 
{
  if (__argc != 2) 
    {
      std :: cerr << "Usage : ./simulated_annealing [instance]" << std :: endl ;
      return 1 ;
    }
  
  Graph :: load (__argv [1]) ; // Instance

  Route route ; // Solution
  
  RouteInit init ; // Sol. Random Init.
  init (route) ;

  RouteEval full_eval ; // Full. Eval.
  full_eval (route) ;
  
  std :: cout << "[From] " << route << std :: endl ;
  
  /* Tools for an efficient (? :-))
     local search ! */
  
  TwoOptRand two_opt_rand ; // Route Random. Gen.
     
  TwoOptIncrEval two_opt_incr_eval ; // Eff. eval.
  
  TwoOpt move ;
  
  moExponentialCoolingSchedule cool_sched (0.1, 0.98) ; // Exponential Cooling Schedule 
  //moLinearCoolingSchedule cool_sched (0.1, 0.5) ; // Linear Cooling Schedule 
  
  moGenSolContinue <Route> cont (1000) ; /* Temperature Descreasing
                                            will occur each 1000
                                            iterations */ 
  
  moSA <TwoOpt> simulated_annealing (two_opt_rand, two_opt_incr_eval, cont, 1000, cool_sched, full_eval) ;
  simulated_annealing (route) ;

  std :: cout << "[To] " << route << std :: endl ;
  
  return 0 ;
}

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