From 25b3719ce7e8c3351b1f46aca6d1dcff54f38162 Mon Sep 17 00:00:00 2001
From: cahon <cahon>
Date: Thu, 25 Apr 2002 14:06:43 +0000
Subject: [PATCH] Cellular parallel easy algorithm

---
 eo/src/eoCellularEasyEA.h | 161 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 eo/src/eoCellularEasyEA.h

diff --git a/eo/src/eoCellularEasyEA.h b/eo/src/eoCellularEasyEA.h
new file mode 100644
index 00000000..5369feb2
--- /dev/null
+++ b/eo/src/eoCellularEasyEA.h
@@ -0,0 +1,161 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+// "eoCellularEasyEA.h"
+
+// (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
+   
+   Contact: cahon@lifl.fr
+*/
+
+#ifndef eoCellularEasyEA_h
+#define eoCellularEasyEA_h
+
+#include <eoContinue.h>
+#include <eoEvalFunc.h>
+#include <eoSelectOne.h>
+#include <eoPopEvalFunc.h>
+#include <eoAlgo.h>
+#include <eoOp.h>
+
+/**
+   The abstract cellular easy algorithm. 
+ */
+
+template <class EOT> class eoCellularEasyEA : public eoAlgo <EOT> {
+  
+public :
+  
+  /**
+     Two constructors
+   */
+
+  eoCellularEasyEA (eoContinue <EOT> & _cont, // Stop. criterion
+		    eoEvalFunc <EOT> & _eval, // Evaluation function
+		    eoSelectOne <EOT> & _sel_neigh, // To choose a partner
+		    eoBinOp <EOT> & _cross, // Cross-over operator
+		    eoMonOp <EOT> & _mut, // Mutation operator
+		    eoSelectOne <EOT> & _sel_repl /* Which to keep between the new
+						     child and the old individual ? */
+		    ) :
+    cont (_cont),
+    eval (_eval),
+    popEval (_eval),
+    sel_neigh (_sel_neigh),
+    cross (_cross),
+    mut (_mut),
+    sel_child (eoSelectFirstOne ()),
+    sel_repl (_sel_repl) {
+    
+  }
+  
+  eoCellularEasyEA (eoContinue <EOT> & _cont,
+		    eoEvalFunc <EOT> & _eval,
+		    eoSelectOne <EOT> & _sel_neigh,
+		    eoQuadOp <EOT> & _cross,
+		    eoMonOp <EOT> & _mut,
+		    eoSelectOne <EOT> & _sel_child, /* To choose one from
+						       the both children */
+		    eoSelectOne <EOT> & _sel_repl
+		    ) :
+    cont (_cont),
+    eval (_eval),
+    popEval (_eval),
+    sel_neigh (_sel_neigh),
+    cross (_cross),
+    mut (_mut),
+    sel_child (_sel_child),
+    sel_repl (_sel_repl) {
+    
+  }
+
+  /**
+     For a given population.
+   */
+
+  void operator () (eoPop <EOT> & pop) {
+    
+    do {
+      
+      for (unsigned i = 0 ; i < pop.size () ; i ++) {
+	
+	// Who are neighbouring to the current individual ?
+	eoPop <EOT> neigh = neighbours (pop, i) ;
+	
+	// To select a partner
+	EOT part, old_sol = pop [i] ;
+	part = sel_neigh (neigh) ;
+
+	// To perform cross-over
+	cross (pop [i], part) ;
+
+	// To perform mutation
+	mut (pop [i]) ;
+	mut (part) ;
+	
+	pop [i].invalidate () ;
+	part.invalidate () ;
+	eval (pop [i]) ;
+	eval (part) ;
+
+	// To choose one of the two children ...
+	eoPop <EOT> pop_loc ;
+	pop_loc.push_back (pop [i]) ;
+	pop_loc.push_back (part) ;
+
+	pop [i] = sel_child (pop_loc) ;
+
+	// To choose only one between the new made child and the old individual
+	pop_loc.clear () ;
+	pop_loc.push_back (pop [i]) ;
+	
+	pop_loc.push_back (old_sol) ;
+	
+	pop [i] = sel_repl (pop_loc) ;	
+      }
+      
+    } while (cont (pop)) ;
+  }
+
+protected :
+  
+  virtual eoPop <EOT> neighbours (const eoPop <EOT> & pop, int rank) = 0 ;
+
+private :
+  
+  eoContinue <EOT> & cont ;
+  eoEvalFunc <EOT> & eval ;
+  eoPopLoopEval <EOT> popEval ;
+  eoSelectOne <EOT> & sel_neigh ;
+  eoBF <EOT &, EOT &, bool> & cross ;
+  eoMonOp <EOT> & mut ;
+  eoSelectOne <EOT> & sel_child ;
+  eoSelectOne <EOT> & sel_repl ;
+  
+  class eoSelectFirstOne : public eoSelectOne <EOT> {
+    
+  public :
+    
+    const EOT & operator () (const eoPop <EOT> & pop) {
+      
+      return pop [0] ; 
+    }
+    
+  } ; 
+  
+} ;
+
+#endif