From 6ac32c4d0c6a8ffb2d0e1630ce8ad76b405e20f5 Mon Sep 17 00:00:00 2001
From: verel <verel@331e1502-861f-0410-8da2-ba01fb791d7f>
Date: Tue, 17 Aug 2010 13:15:53 +0000
Subject: [PATCH] Ajout de moPopSolEval.h pour evaluer a solution-set

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1904 331e1502-861f-0410-8da2-ba01fb791d7f
---
 trunk/problems/eval/moPopSolEval.h | 82 ++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 trunk/problems/eval/moPopSolEval.h

diff --git a/trunk/problems/eval/moPopSolEval.h b/trunk/problems/eval/moPopSolEval.h
new file mode 100644
index 000000000..a393fd0dd
--- /dev/null
+++ b/trunk/problems/eval/moPopSolEval.h
@@ -0,0 +1,82 @@
+/*
+<moPopSolEval.h>
+Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
+
+Sébastien Verel, Arnaud Liefooghe, Jérémie Humeau
+
+This software is governed by the CeCILL license under French law and
+abiding by the rules of distribution of free software.  You can  ue,
+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".
+
+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 _moPopSolEval_h
+#define _moPopSolEval_h
+
+#include <problems/bitString/moPopSol.h>
+#include <eoEvalFunc.h>
+#include <cmath>
+
+/**
+ * To compute the fitness of a pop-based solution
+ */
+template< class EOT >
+class moPopSolEval : public eoEvalFunc<EOT>
+{
+public:
+  typedef typename EOT::SUBEOT SUBEOT;
+
+  /**
+   * default constructor
+   *
+   * @param _eval evaluation function of the solution
+   * @param _p the exponent of the p-norm to compute the population based fitness
+   */
+  moPopSolEval(eoEvalFunc<SUBEOT>& _eval, unsigned int _p): eval(_eval), p(_p){}
+  
+  /**
+   * to compute the fitness of a population-based solution
+   * which is the norm p of the fitness of solutions: ( sigma_{i} f(s_i)^p )^(1/p) 
+   *
+   * re-compute the fitness of solution which are invalid
+   *
+   * @param _sol the population-based solution to evaluate
+   */
+  void operator() (EOT& _sol) {
+    double fit = 0;
+
+    for (unsigned int i = 0; i < _sol.size(); i++) {
+      if(_sol[i].invalid())
+	eval(_sol[i]);
+
+      fit += pow((double) _sol[i].fitness(), (int) p);
+    }
+
+    fit = pow((double) fit, (double)1/p);
+
+    _sol.fitness(fit);
+  }
+
+private:
+  eoEvalFunc<SUBEOT>& eval;
+  unsigned int p;
+};
+
+#endif