The island EA model

eo/src/paradisEO/island/eoIslandsEasyEA.h

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+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+// "eoIslandsEasyEA"
+
+// (c) OPAC Team, LIFL, 2002
+
+/* 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
+   
+   Cont	act: cahon@lifl.fr
+*/
+
+#ifndef eoIslandsEasyEA_h
+#define eoIslandsEasyEA_h
+
+#include <vector>
+#include <string>
+#include <paradisEO/comm/eoListener.h>
+#include <paradisEO/island/eoConnectivity.h>
+#include <paradisEO/island/eoMigUpdater.h>
+#include <eoContinue.h>
+#include <eoSelect.h>
+#include <eoReplacement.h>
+#include <utils/eoCheckPoint.h>
+#include <utils/eoUpdater.h>
+
+/**
+   An island distributed easy evolutionary algorithm.
+   It embeds an instance of easyEA. The behavior of this
+   last one isn't modified. However, exchanges of individuals
+   are performed with other EAs.
+ */
+
+template <class EOT> class eoIslandsEasyEA : public eoEasyEA <EOT> {
+  
+public :
+  
+  /**
+     Constructor
+  */
+  
+  eoIslandsEasyEA (string _id,
+		   eoListener <EOT> & _listen,
+		   eoConnectivity <EOT> & _conn,
+		   eoEasyEA <EOT> & _ea,
+		   eoContinue <EOT> & _cont,
+		   eoSelect <EOT> & _select,
+		   eoReplacement <EOT> & _replace
+		   ) :
+    id (_id),
+    listen (_listen),
+    conn (_conn),
+    chkp (_ea.continuator),
+    mig_upd (_listen,
+	     _conn,
+	     _cont,
+	     _select,
+	     _replace),
+    eoEasyEA <EOT> (chkp,
+		    _ea.eval,
+		    _ea.breed,
+		    _ea.replace
+		    ) {
+    chkp.add (mig_upd) ;
+  }
+  
+  virtual void operator () (eoPop <EOT> & pop) {
+    
+    mig_upd (pop) ; // Sets pop. to send/receive EO
+    listen.publish (id) ;
+    eoEasyEA <EOT> :: operator () (pop) ;
+    listen.publish ("_") ;
+  }
+
+private :
+
+  // Internal components
+  
+  string id ; // String identifiant of this algorithm
+  eoListener <EOT> & listen ; // The neighbouring of concurrent algos
+  eoConnectivity <EOT> & conn ; // Communication topology
+  eoCheckPoint <EOT> chkp ;
+  eoMigUpdater <EOT> mig_upd ;
+} ;
+
+#endif