Migration from SVN

2012-08-30 11:30:11 +02:00 · 2012-08-30 11:30:11 +02:00 · 8cd56f37db
commit 8cd56f37db
parent d7d6c3a217
29069 changed files with 0 additions and 4096888 deletions
--- a/eo/src/eoSGA.h
+++ b/eo/src/eoSGA.h
@ -0,0 +1,121 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoSGA.h
+// (c) GeNeura Team, 2000 - EEAAX 1999 - Maarten Keijzer 2000
+/*
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
+             Marc.Schoenauer@polytechnique.fr
+             mak@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _eoSGA_h
+#define _eoSGA_h
+
+#include <eoInvalidateOps.h>
+#include <eoContinue.h>
+#include <eoPop.h>
+#include <eoSelectOne.h>
+#include <eoSelectPerc.h>
+#include <eoEvalFunc.h>
+#include <eoAlgo.h>
+#include <apply.h>
+
+/** The Simple Genetic Algorithm, following Holland and Goldberg
+ *
+ * Needs a selector (class eoSelectOne) a crossover (eoQuad, i.e. a
+ * 2->2 operator) and a mutation with their respective rates, of
+ * course an evaluation function (eoEvalFunc) and a continuator
+ * (eoContinue) which gives the stopping criterion. Performs full
+ * generational replacement.
+ *
+ * @ingroup Algorithms
+ */
+template <class EOT>
+class eoSGA : public eoAlgo<EOT>
+{
+public :
+
+  // added this second ctor as I didn't like the ordering of the parameters
+  // in the one above. Any objection :-) MS
+  eoSGA(
+        eoSelectOne<EOT>& _select,
+        eoQuadOp<EOT>& _cross, float _crate,
+        eoMonOp<EOT>& _mutate, float _mrate,
+        eoEvalFunc<EOT>& _eval,
+        eoContinue<EOT>& _cont)
+    : cont(_cont),
+          mutate(_mutate),
+          mutationRate(_mrate),
+          cross(_cross),
+          crossoverRate(_crate),
+          select(_select),
+          eval(_eval) {}
+
+  void operator()(eoPop<EOT>& _pop)
+  {
+    eoPop<EOT> offspring;
+
+    do
+      {
+        select(_pop, offspring);
+
+        unsigned i;
+
+        for (i=0; i<_pop.size()/2; i++)
+          {
+            if ( rng.flip(crossoverRate) )
+            {
+                    // this crossover generates 2 offspring from two parents
+                    if (cross(offspring[2*i], offspring[2*i+1]))
+        {
+          offspring[2*i].invalidate();
+          offspring[2*i+1].invalidate();
+        }
+      }
+          }
+
+        for (i=0; i < offspring.size(); i++)
+          {
+            if (rng.flip(mutationRate) )
+            {
+                     if (mutate(offspring[i]))
+          offspring[i].invalidate();
+            }
+          }
+
+        _pop.swap(offspring);
+        apply<EOT>(eval, _pop);
+
+      } while (cont(_pop));
+  }
+
+private :
+
+  eoContinue<EOT>& cont;
+  /// eoInvalidateMonOp invalidates the embedded operator
+  eoInvalidateMonOp<EOT> mutate;
+  float mutationRate;
+  // eoInvalidateQuadOp invalidates the embedded operator
+  eoInvalidateQuadOp<EOT> cross;
+  float crossoverRate;
+  eoSelectPerc<EOT> select;
+  eoEvalFunc<EOT>& eval;
+};
+
+#endif