Adding PBIL files - simple PBIL algorithm with simple additive update rule

eo/src/ga/make_PBILdistrib.h

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+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// make_PBILdistrib.h
+// (c) Marc Schoenauer, Maarten Keijzer, 2001
+/* 
+    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: Marc.Schoenauer@polytechnique.fr
+             mkeijzer@dhi.dk
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _make_PBILdistrib_h
+#define _make_PBILdistrib_h
+
+#include <sys/time.h>		   // for time(0) for random seeding
+#include <ga/eoPBILOrg.h>
+#include <utils/eoRNG.h>
+#include <utils/eoParser.h>
+#include <utils/eoState.h>
+
+
+//////////////////////////DISTRIB CONSTRUCTION ///////////////////////////////
+/**
+ * Templatized version of parser-based construct of the distribution
+ * for PBIL distribution evolution algorithm
+ *
+ * It must then be instantiated, and compiled on its own for a given EOType
+ * (see test/t-eoPBIL.cpp
+ *
+ * Last argument is template-disambiguating
+*/
+
+
+template <class EOT>
+eoPBILDistrib<EOT> &  do_make_PBILdistrib(eoParser & _parser, eoState& _state, EOT)
+{
+  // First the random seed
+    eoValueParam<uint32>& seedParam = _parser.createParam(uint32(0), "seed", "Random number seed", 'S');
+    if (seedParam.value() == 0)
+	seedParam.value() = time(0);
+
+    // the representation dependent stuff
+    unsigned chromSize = _parser.createParam(unsigned(10), "chromSize", "The length of the bitstrings", 'n',"Algorithm").value();
+
+    eoPBILDistrib<EOT> * ptDistrib = new eoPBILDistrib<EOT>(chromSize);
+    _state.storeFunctor(ptDistrib);
+
+    // now the initialization: read a previously saved distribution, or random
+  eoValueParam<string>& loadNameParam = _parser.createParam(string(""), "Load","A save file to restart from",'L', "Persistence" ); 
+  if (loadNameParam.value() != "") // something to load
+    {
+      // create another state for reading
+      eoState inState;		// a state for loading - WITHOUT the parser
+      // register the rng and the distribution in the state, 
+      // so they can be loaded,
+      // and the present run will be the exact continuation of the saved run
+      // eventually with different parameters
+      inState.registerObject(*ptDistrib);
+      inState.registerObject(rng);
+      inState.load(loadNameParam.value()); //  load the distrib and the rng
+    }
+  else				// nothing loaded from a file
+    {
+      rng.reseed(seedParam.value());
+    }
+
+  // for future stateSave, register the algorithm into the state
+   _state.registerObject(_parser);
+   _state.registerObject(*ptDistrib);
+   _state.registerObject(rng);
+
+  return *ptDistrib;
+}
+
+#endif