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Changed the single objective shortcut calculation

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This commit is contained in:
maartenkeijzer 2001-03-22 10:51:16 +00:00
commit 94f0558d43
1 changed files with 17 additions and 7 deletions
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24
eo/src/eoNDSorting.h
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@ -48,6 +48,11 @@ class eoNDSorting : public eoPerf2WorthCached<EOT, double>
/** implements fast nondominated sorting
*/
class DummyEO : public EO<typename EOT::Fitness>
{
public: unsigned index;
};
void calculate_worths(const eoPop<EOT>& _pop)
{
value().resize(_pop.size());
@ -57,17 +62,23 @@ class eoNDSorting : public eoPerf2WorthCached<EOT, double>
if (traits::nObjectives() == 1)
{ // no need to do difficult sorting,
eoPop<DummyEO> tmp_pop;
tmp_pop.resize(_pop.size());
// copy pop to dummy population (only need the fitnesses)
for (unsigned i = 0; i < _pop.size(); ++i)
{
value()[i] = _pop[i].fitness()[0];
tmp_pop[i].fitness(_pop[i].fitness());
tmp_pop[i].index = i;
}
if (!traits::maximizing(0))
// sort it
tmp_pop.sort();
//
for (unsigned i = 0; i < _pop.size(); ++i)
{
for (unsigned i = 0; i < value().size(); ++i)
{
value()[i] = exp(-value()[i]);
}
value()[tmp_pop[i].index] = _pop.size() - i; // set rank
}
return;
@ -159,7 +170,6 @@ class eoNDSorting : public eoPerf2WorthCached<EOT, double>
value()[i] = max_fitness - value()[i];
assert(n[i] == 0);
}
}
};