add sampling, add moVectorMonitor

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1774 331e1502-861f-0410-8da2-ba01fb791d7f

trunk/paradiseo-mo/src/sampling/moSampling.h

@@ -0,0 +1,168 @@
+/*
+  <moSampling.h>
+  Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
+
+  Sebastien Verel, Arnaud Liefooghe, Jeremie Humeau
+
+  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
+  professionals having in-depth computer knowledge. Users are therefore
+  encouraged to load and test the software's suitability as regards their
+  requirements in conditions enabling the security of their systems and/or
+  data to be ensured and,  more generally, to use and operate it in the
+  same conditions as regards security.
+  The fact that you are presently reading this means that you have had
+  knowledge of the CeCILL license and that you accept its terms.
+
+  ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+  Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+#ifndef moSampling_h
+#define moSampling_h
+
+#include <vector>
+#include <eoFunctor.h>
+#include <utils/eoMonitor.h>
+#include <continuator/moStat.h>
+#include <continuator/moCheckpoint.h>
+#include <continuator/moVectorMonitor.h>
+#include <eoInit.h>
+
+/**
+ * To sample the search space:
+ * A local search is used to sample the search space
+ * Some statistics are computed at each step of the local search
+ * 
+ * Can be used to study the fitness landscape
+ */
+template <class Neighbor>
+class moSampling : public eoF<void>
+{
+public:
+  typedef typename Neighbor::EOT EOT ;
+  
+  /**
+   * Default Constructor
+   * @param _init initialisation method of the solution
+   * @param _localSearch  local search to sample the search space
+   * @param _stat statistic to compute during the search
+   */
+  template <class ValueType>
+  moSampling(eoInit<EOT> & _init, moLocalSearch<Neighbor> & _localSearch, moStat<EOT,ValueType> & _stat) : init(_init), localSearch(_localSearch), continuator(_localSearch.getContinuator())
+  {
+    checkpoint = new moCheckpoint<Neighbor>(*continuator);
+    add(_stat);
+  }
+
+  ~moSampling() {
+    for(unsigned i = 0; i < monitorVec.size(); i++)
+      delete monitorVec[i];
+
+    delete checkpoint ;
+  }
+
+  /**
+   * Add a statistic
+   * @param _stat another statistic to compute during the search
+   */
+  template< class ValueType >
+  void add(moStat<EOT, ValueType> & _stat) {
+    //    statVec.push_back(&_stat);
+
+    moVectorMonitor * monitor = new moVectorMonitor(_stat);
+    monitorVec.push_back(monitor);
+
+    checkpoint->add(_stat);
+    checkpoint->add(*monitor);
+  }    
+
+  /**
+   * To sample the search and get the statistics
+   */
+  void operator()(void) {
+    // clear all statisic vectors
+    for(unsigned i = 0; i < monitorVec.size(); i++)
+      monitorVec[i]->clear();
+
+    // change the checkpoint to compute the statistics
+    localSearch.setContinuator(*checkpoint);
+
+    // the initial solution
+    EOT solution;
+
+    // initialisation of the solution
+    init(solution);
+
+    // compute the sampling
+    localSearch(solution);
+
+    // set to initial continuator
+    localSearch.setContinuator(*continuator);
+  }
+
+  /**
+   * to export the vector of values into one file
+   */
+  void exportFile(std::string _filename, std::string _delim = " ") {
+    // create file
+    ofstream os(_filename.c_str()); 
+
+    if (!os) {
+      string str = "moSampling: Could not open " + _filename;
+      throw runtime_error(str);
+    }
+    
+    // all vector have the same size
+    unsigned vecSize = monitorVec[0]->size();
+
+    for(unsigned int i = 0; i < vecSize; i++) {
+      std::vector<moVectorMonitor*>::iterator it = monitorVec.begin();
+
+      os << (*it)->getValue(i);
+      
+      for(++it; it != monitorVec.end(); ++it)
+	{
+	  os << _delim.c_str() << (*it)->getValue(i);
+	}
+      
+      os << std::endl ;
+    }
+    
+  }
+
+  /**
+   * @return name of the class
+   */
+  virtual std::string className(void) const {
+    return "moSampling";
+  }
+  
+protected:
+  eoInit<EOT> & init;
+  moLocalSearch<Neighbor> & localSearch;
+
+  moContinuator<Neighbor> * continuator;
+  moCheckpoint<Neighbor> * checkpoint;
+
+  //  std::vector<moStatBase<EOT>*> statVec;
+  std::vector<moVectorMonitor*> monitorVec;
+
+};
+
+
+#endif