add algo

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@368 331e1502-861f-0410-8da2-ba01fb791d7f

branches/paradiseo-moeo-1.0/src/algo/moeoHybridLS.h

@@ -0,0 +1,76 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// moeoHybridLS.h
+// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
+/*
+    This library...
+
+    Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef MOEOHYBRIDLS_H_
+#define MOEOHYBRIDLS_H_
+
+#include <eoContinue.h>
+#include <eoPop.h>
+#include <eoSelect.h>
+#include <utils/eoUpdater.h>
+#include <algo/moeoLS.h>
+#include <archive/moeoArchive.h>
+
+/**
+ * This class allows to apply a multi-objective local search to a number of selected individuals contained in the archive
+ * at every generation until a stopping criteria is verified.
+ */
+template < class MOEOT >
+class moeoHybridLS : public eoUpdater
+{
+public:
+
+    /**
+     * Ctor
+     * @param _term stopping criteria
+     * @param _select selector
+     * @param _mols a multi-objective local search
+     * @param _arch the archive
+     */
+    moeoHybridLS (eoContinue < MOEOT > & _term, eoSelect < MOEOT > & _select, moeoLS < MOEOT, MOEOT > & _mols, moeoArchive < MOEOT > & _arch) :
+            term(_term), select(_select), mols(_mols), arch(_arch)
+    {}
+
+
+    /**
+     * Applies the multi-objective local search to selected individuals contained in the archive if the stopping criteria is not verified 
+     */
+    void operator () ()
+    {
+        if (! term (arch))
+        {
+            // selection of solutions
+            eoPop < MOEOT > selectedSolutions;
+            select(arch, selectedSolutions);
+            // apply the local search to every selected solution
+            for (unsigned int i=0; i<selectedSolutions.size(); i++)
+            {
+                mols(selectedSolutions[i], arch);
+            }
+        }
+    }
+
+
+private:
+
+    /** stopping criteria */
+    eoContinue < MOEOT > & term;
+    /** selector */
+    eoSelect < MOEOT > & select;
+    /** multi-objective local search */
+    moeoLS < MOEOT, MOEOT > & mols;
+    /** archive */
+    moeoArchive < MOEOT > & arch;
+
+};
+
+#endif /*MOEOHYBRIDLS_H_*/