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ParadisEO-PEO sources added

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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@94 331e1502-861f-0410-8da2-ba01fb791d7f
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legrand 2006-12-20 12:52:07 +00:00
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// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
// "peoSyncMultiStart.h"
// (c) OPAC Team, LIFL, August 2005
/* 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: paradiseo-help@lists.gforge.inria.fr
*/
#ifndef __peoSyncMultiStart_h
#define __peoSyncMultiStart_h
#include <utils/eoUpdater.h>
#include <moAlgo.h>
#include <eoSelect.h>
#include <eoReplacement.h>
#include <eoContinue.h>
#include "core/service.h"
#include "core/messaging.h"
#include "core/peo_debug.h"
extern int getNodeRank();
//! Class providing the basis for the synchronous multi-start model.
//! The peoSyncMultiStart class provides the basis for implementing the synchronous multi-start model,
//! for launching several solution-based algorithms in parallel on a specified initial population. As a simple
//! example, several hill climbing algorithms may be synchronously launched on the specified population, each
//! algorithm acting upon one individual only, the final result being integrated back in the population. A
//! peoSyncMultiStart object can be specified as checkpoint object for a classic ParadisEO evolutionary algorithm
//! thus allowing for simple hybridization schemes which combine the evolutionary approach with a local search approach,
//! for example, executed at the end of each generation.
template< class EOT > class peoSyncMultiStart : public Service, public eoUpdater {
public:
//! Constructor function - several simple parameters are required for defining the characteristics of the multi-start model.
//!
//! @param eoContinue< EOT >& __cont - defined for including further functionality - no semantics associated at this time;
//! @param eoSelect< EOT >& __select - selection strategy for obtaining a subset of the initial population on which to apply the specified algorithm;
//! @param eoReplacement< EOT >& __replace - replacement strategy for integrating the resulting individuals in the initial population;
//! @param moAlgo< EOT >& __ls - algorithm to be applied on each of the selected individuals - a <b>moAlgo< EOT ></b>-derived object must be specified;
//! @param eoPop< EOT >& __pop - the initial population from which the individuals are selected for applying the specified algorithm.
peoSyncMultiStart(
eoContinue< EOT >& __cont,
eoSelect< EOT >& __select,
eoReplacement< EOT >& __replace,
moAlgo< EOT >& __ls,
eoPop< EOT >& __pop
);
//! Operator which synchronously executes the specified algorithm on the individuals selected from the initial population.
//! There is no need to explicitly call the operator - automatically called as checkpoint operator.
void operator()();
//! Auxiliary function for transferring data between the process requesting the synchronous execution of the specified
//! algorithm and the process which actually executes the algorithm. There is no need to explicitly call the function.
void packData();
//! Auxiliary function for transferring data between the process requesting the synchronous execution of the specified
//! algorithm and the process which actually executes the algorithm. There is no need to explicitly call the function.
void unpackData();
//! Auxiliary function for actually executing the specified algorithm on one assigned individual. There is no need to
//! explicitly call the function.
void execute();
//! Auxiliary function for transferring data between the process requesting the synchronous execution of the specified
//! algorithm and the process which actually executes the algorithm. There is no need to explicitly call the function.
void packResult();
//! Auxiliary function for transferring data between the process requesting the synchronous execution of the specified
//! algorithm and the process which actually executes the algorithm. There is no need to explicitly call the function.
void unpackResult();
//! Auxiliary function for notifications between the process requesting the synchronous multi-start execution
//! and the processes that performs the actual execution phase. There is no need to explicitly call the function.
void notifySendingData();
//! Auxiliary function for notifications between the process requesting the synchronous multi-start execution
//! and the processes that performs the actual execution phase. There is no need to explicitly call the function.
void notifySendingAllResourceRequests();
private:
eoContinue< EOT >& cont;
eoSelect< EOT >& select;
eoReplacement< EOT >& replace;
moAlgo< EOT >& ls;
eoPop< EOT >& pop;
eoPop< EOT > sel;
eoPop< EOT > impr_sel;
EOT sol;
unsigned idx;
unsigned num_term;
};
template< class EOT > peoSyncMultiStart< EOT > :: peoSyncMultiStart(
eoContinue < EOT >& __cont,
eoSelect< EOT >& __select,
eoReplacement< EOT >& __replace,
moAlgo < EOT >& __ls,
eoPop< EOT >& __pop
) : cont( __cont ), select( __select ), replace( __replace ), ls( __ls ), pop( __pop )
{
}
template< class EOT > void peoSyncMultiStart< EOT > :: packData() {
:: pack( sel[ idx++ ] );
}
template< class EOT > void peoSyncMultiStart< EOT > :: unpackData() {
unpack( sol );
}
template< class EOT > void peoSyncMultiStart< EOT > :: execute() {
ls( sol );
}
template< class EOT > void peoSyncMultiStart< EOT > :: packResult() {
pack( sol );
}
template< class EOT > void peoSyncMultiStart< EOT > :: unpackResult() {
unpack( sol );
impr_sel.push_back( sol );
num_term++;
if ( num_term == sel.size() ) {
getOwner()->setActive();
replace( pop, impr_sel );
printDebugMessage( "replacing the improved individuals in the population." );
resume();
}
}
template< class EOT > void peoSyncMultiStart< EOT > :: operator()() {
printDebugMessage( "performing the parallel multi-start hybridization." );
select( pop, sel );
impr_sel.clear();
idx = num_term = 0;
requestResourceRequest( sel.size() );
stop();
}
template< class EOT > void peoSyncMultiStart< EOT > :: notifySendingData() {
}
template< class EOT > void peoSyncMultiStart< EOT > :: notifySendingAllResourceRequests() {
getOwner()->setPassive();
}
#endif