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hypervolume 2D archive added

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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1882 331e1502-861f-0410-8da2-ba01fb791d7f
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jhumeau 2010-07-08 13:25:19 +00:00
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305
trunk/paradiseo-moeo/src/archive/moeo2DMinHypervolumeArchive.h Normal file
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@ -0,0 +1,305 @@
/*
* <moeo2DMinHypervolumeArchive.h>
* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
* (C) OPAC Team, LIFL, 2002-2007
*
* Arnaud Liefooghe
* Jérémie Humeau
*
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL license and that you accept its terms.
*
* ParadisEO WebSite : http://paradiseo.gforge.inria.fr
* Contact: paradiseo-help@lists.gforge.inria.fr
*
*/
//-----------------------------------------------------------------------------
#ifndef MOEO2DMINHYPERVOLUMEARCHIVE_H_
#define MOEO2DMINHYPERVOLUMEARCHIVE_H_
#include <set>
#include <climits>
template < class MOEOT >
struct comp
{
// returns a "before" b
// all objectives = min
bool operator() (const MOEOT & a, const MOEOT & b)
{
return ((a.objectiveVector()[1] < b.objectiveVector()[1]) || ((a.objectiveVector()[1] == b.objectiveVector()[1]) && (a.objectiveVector()[0] < b.objectiveVector()[0])));
}
};
/** 2D (minimization) bounded archive by hypervolume , base on a set */
template < class MOEOT >
class moeo2DMinHypervolumeArchive : public std::set<MOEOT, comp < MOEOT > >
{
public:
typedef typename MOEOT::Fitness Fitness;
typedef typename MOEOT::ObjectiveVector ObjectiveVector;
typedef typename std::set < MOEOT, comp<MOEOT> >::iterator Iterator;
using std::set < MOEOT, comp<MOEOT> > :: begin;
using std::set < MOEOT, comp<MOEOT> > :: end;
using std::set < MOEOT, comp<MOEOT> > :: insert;
using std::set < MOEOT, comp<MOEOT> > :: erase;
using std::set < MOEOT, comp<MOEOT> > :: size;
using std::set < MOEOT, comp<MOEOT> > :: upper_bound;
/**
* Ctr.
* @param _maxSize size of the archive (must be >1)
* @param _maxValue fitness assigned to the first and the last solution in the archive (default LONG_MAX)
*/
moeo2DMinHypervolumeArchive(unsigned int _maxSize, double _maxValue=LONG_MAX) : std::set < MOEOT, comp<MOEOT> > (), maxSize(_maxSize), maxValue(_maxValue)
{
if(maxSize<2)
maxSize=2;
}
/**
* update the archive with a solution
* @param _moeo a solution
* @return true if _moeo has been added to the archive
*/
bool operator()(const MOEOT & _moeo)
{
//store result
bool result;
//used to affect the fitness value
MOEOT* tmp;
//used to find sol with minimum fitness value
double minFit=maxValue;
Iterator itMinFit;
//If archive is empty -> add the sol and affect its fitness value
if (size()==0){
result = true;
insert(_moeo);
tmp = (MOEOT*)&(*begin());
tmp->fitness(maxValue);
}
else{
//else test if sol can be added to the archive
result = insert(_moeo.objectiveVector());
if (result){
//if yes, insert it and recompute fitness value of MOEOT and its neighbors
insert(hint,_moeo);
if(size()>2){
//general case
hint--;
computeFitness(hint);
}
else{
//archive size < 3, fitness=maxValue for each sol
Iterator it=begin();
while(it!=end()){
tmp = (MOEOT*)&(*it);
tmp->fitness(maxValue);
it++;
}
}
//remove MOEOT with the lowest fitness value if archive size > maxSize
if(size()>maxSize){
//find sol with minimum fitness
for(Iterator i=begin(); i!=end(); i++){
if(i->fitness() < minFit){
minFit=i->fitness();
itMinFit=i;
}
}
//remove it and recompute fitness of its neighbors
Iterator ittmp=itMinFit;
ittmp--;
erase(itMinFit);
compute(ittmp);
ittmp++;
compute(ittmp);
}
}
}
return result;
}
/**
* update the archive with a population
* @param _pop a pop
* @return true if at least one solution of _pop has been added to the archive
*/
bool operator()(const eoPop < MOEOT > & _pop)
{
bool result = false;
bool tmp = false;
for (unsigned int i=0; i<_pop.size(); i++)
{
tmp = (*this)(_pop[i]);
result = tmp || result;
}
return result;
}
/**
* Test if insertion is possible and fix hint if yes
* @param _objVec the objective vector of the sol to insert
* @return true if objVec can be added to the archive wrt Pareto-dominance
*/
bool insert(const ObjectiveVector & _objVec)
{
bool result = false;
Iterator it;
double min;
// set the objVec to the empty solution
empty.objectiveVector(_objVec);
// compute the position where it would possibly be added
it = upper_bound(empty);
// compute the weigth from the previous solution
min = begin()->objectiveVector()[0];
if (it != begin())
{
it--;
min = (*it).objectiveVector()[0];
it++;
}
// if it has a better weitgh, or if it's an extreme sol, let's add it
if (it == begin() || _objVec[0]<min)
{
// remove dominated solutions
remove(it,_objVec);
// set hint to the current iterator (probably modified by "remove")
hint=it;
// set result to true
result = true;
}
return result;
}
/**
* print objective vector and fitness value of the archive
*/
void print(){
Iterator it = begin();
while(it!=end()){
std::cout << (*it).objectiveVector()[0] << " " << (*it).objectiveVector()[1] << ", fit: " << (*it).fitness() << std::endl;
it++;
}
}
protected:
/** an empty MOEOT used for checking insertion */
MOEOT empty;
/** hint for the insertion */
Iterator hint;
/** Size max of the archive*/
unsigned int maxSize;
/** fitness assigned to the first and the last solution in the archive */
double maxValue;
/**
* remove solutions from the archive that are dominated by _objVec
* @param _it an iterator beginning on the first potentialy sol to remove
* @param _objVec the objective vector of the new solution
*/
void remove(Iterator & _it, const ObjectiveVector & _objVec)
{
Iterator itd;
while ((_it!=end()) && ((*_it).objectiveVector()[0] >= _objVec[0]))
{
itd = _it;
_it++;
erase(itd);
}
}
/**
* compute fitness value of a solution and its two neighbors
* @param _it refer to the solution
*/
void computeFitness(Iterator& _it){
Iterator tmp;
if(_it!=begin()){
tmp=_it;
tmp--;
compute(tmp);
}
_it++;
if(_it!=end()){
_it--;
tmp=_it;
tmp++;
compute(tmp);
}
else{
_it--;
}
compute(_it);
}
/**
* compute fitness value of a solution
* @param _it refer to the solution
*/
void compute(Iterator& _it){
double x0, x1, y0, y1, fit;
MOEOT* tmp;
if(_it==begin()){
tmp = (MOEOT*)&(*_it);
tmp->fitness(maxValue);
}
else if((++_it)==end()){
_it--;
tmp = (MOEOT*)&(*_it);
tmp->fitness(maxValue);
}
else{
_it--;
x0 = (*_it).objectiveVector()[0];
y0 = (*_it).objectiveVector()[1];
_it--;
x1 = (*_it).objectiveVector()[0];
_it++;
_it++;
y1 = (*_it).objectiveVector()[1];
_it--;
fit= (x1 - x0) * (y1 - y0);
tmp = (MOEOT*)&(*_it);
tmp->fitness(fit);
}
}
};
#endif /*MOEO2DMINHYPERVOLUMEARCHIVE_H_ */

1
trunk/paradiseo-moeo/src/moeo
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@ -57,6 +57,7 @@
#include <algo/moeoSPEA2.h>
#include <algo/moeoUnifiedDominanceBasedLS.h>
#include <archive/moeo2DMinHypervolumeArchive.h>
#include <archive/moeoArchive.h>
#include <archive/moeoBoundedArchive.h>
#include <archive/moeoEpsilonHyperboxArchive.h>

1
trunk/paradiseo-moeo/test/CMakeLists.txt
View file

@ -103,6 +103,7 @@ SET (TEST_LIST
t-moeoNumberUnvisitedSelect
t-moeoDMLSMonOp
t-moeoDMLSGenUpdater
t-moeo2DMinHypervolumeArchive
)
FOREACH (test ${TEST_LIST})

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trunk/paradiseo-moeo/test/t-moeo2DMinHypervolumeArchive.cpp Normal file
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/*
* <t-moeo2DMinHypervolumeArchive.cpp>
* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
* (C) OPAC Team, LIFL, 2002-2007
*
* Arnaud Liefooghe
*
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL license and that you accept its terms.
*
* ParadisEO WebSite : http://paradiseo.gforge.inria.fr
* Contact: paradiseo-help@lists.gforge.inria.fr
*
*/
//-----------------------------------------------------------------------------
// t-moeo2DMinHypervolumeArchive.cpp
//-----------------------------------------------------------------------------
#include <eo>
#include <moeo>
#include <cassert>
//-----------------------------------------------------------------------------
class ObjectiveVectorTraits : public moeoObjectiveVectorTraits
{
public:
static bool minimizing (int i)
{
return true;
}
static bool maximizing (int i)
{
return false;
}
static unsigned int nObjectives ()
{
return 2;
}
};
typedef moeoRealObjectiveVector < ObjectiveVectorTraits > ObjectiveVector;
typedef moeoBitVector < ObjectiveVector > Solution;
//-----------------------------------------------------------------------------
int main()
{
std::cout << "[moeo2DMinHyperVolumeArchive]\t=>\t";
// objective vectors
ObjectiveVector obj;
obj[0] = 7;
obj[1] = 15;
// population
eoPop < Solution > pop;
pop.resize(0);
//Solutions
Solution a;
a.objectiveVector(obj);
// archive
moeo2DMinHypervolumeArchive< Solution > arch(5,1000);
//test archive
pop.push_back(a);
obj[0]=10;
obj[1]=14;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=8;
obj[1]=14.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=6;
obj[1]=15;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=14;
obj[1]=13;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=12;
obj[1]=13.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=14.5;
obj[1]=12.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=14;
obj[1]=13;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=11.5;
obj[1]=11.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=5.5;
obj[1]=12.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=3.5;
obj[1]=13.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=15;
obj[1]=3.5;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=13.5;
obj[1]=8;
a.objectiveVector(obj);
pop.push_back(a);
obj[0]=1;
obj[1]=15;
a.objectiveVector(obj);
pop.push_back(a);
arch(pop);
moeo2DMinHypervolumeArchive< Solution >::iterator it;
it=arch.begin();
assert(it->objectiveVector()[0]==15);
assert(it->objectiveVector()[1]==3.5);
assert(it->fitness()==1000);
it++;
assert(it->objectiveVector()[0]==13.5);
assert(it->objectiveVector()[1]==8);
assert(it->fitness()==6.75);
it++;
assert(it->objectiveVector()[0]==5.5);
assert(it->objectiveVector()[1]==12.5);
assert(it->fitness()==8);
it++;
assert(it->objectiveVector()[0]==3.5);
assert(it->objectiveVector()[1]==13.5);
assert(it->fitness()==3);
it++;
assert(it->objectiveVector()[0]==1);
assert(it->objectiveVector()[1]==15);
assert(it->fitness()==1000);
std::cout << "OK" << std::endl;
return EXIT_SUCCESS;
}
//-----------------------------------------------------------------------------