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Added the eoVariableParetoTraits that allows to specify the number

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of objectives and the max/min for each one at run-time
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evomarc 2002-01-31 17:42:03 +00:00
commit 52bc2ed4f8
1 changed files with 57 additions and 4 deletions
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61
eo/src/eoParetoFitness.h
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@ -19,7 +19,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact: mak@dhi.dk
Marc.Schoenauer@polytechnique.fr
Marc.Schoenauer@inria.fr
*/
//-----------------------------------------------------------------------------
@ -28,11 +28,14 @@
#include <math.h>
#include <vector>
#include <stdexcept>
/**
eoFitnessTraits: a traits class to specify the number of objectives and which one are maximizing
or not. See eoParetoFitness for its use. If you define your own, make sure you make the functions
static!
* eoFitnessTraits: a traits class to specify
* the number of objectives and which one are maximizing or not
* See test/t-eoParetoFitness for its use.
*
* If you define your own, make sure you make the functions static!
*/
class eoParetoFitnessTraits
{
@ -43,6 +46,50 @@ class eoParetoFitnessTraits
static bool maximizing(int which) { return true; } // by default: all are maximizing
};
/**
* eoVariableParetoTraits : an eoParetoFitnessTraits whose characteristics
* can be set at run-time (nb objectives and min/max's)
* Why bother? For didactical purposes (and EASEA implementation :-)
*/
class eoVariableParetoTraits : public eoParetoFitnessTraits
{
public :
/** setting the static stuff */
static void setUp(unsigned _n, vector<bool> & _b)
{
nObj=_n;
bObj=_b;
if (nObj != bObj.size())
throw runtime_error("Number of objectives and min/max size don't match in VariableParetoTraits::setup");
}
/** the accessors */
static unsigned nObjectives()
{
#ifndef NDEBUG
if (!nObj)
throw runtime_error("Number of objectives not assigned in VariableParetoTraits");
#endif
return nObj;
}
static bool maximizing(unsigned _i)
{
#ifndef NDEBUG
if (_i >= bObj.size())
throw runtime_error("Wrong index in VariableParetoTraits");
#endif
return bObj[_i];
}
private:
static unsigned nObj;
static vector<bool> bObj;
};
// need to allocate these -> should probably be done in some cpp file!
unsigned eoVariableParetoTraits::nObj;
vector<bool> eoVariableParetoTraits::bObj;
/**
eoParetoFitness class: vector of doubles with overloaded comparison operators. Comparison is done
on pareto dominance. The template argument FitnessTraits defaults to eoParetoFitnessTraits, which
@ -61,6 +108,12 @@ public :
eoParetoFitness(void) : std::vector<double>(FitnessTraits::nObjectives(),0.0) {}
/** access to the traits characteristics (so you don't have to write
* a lot of typedef's around
*/
static void setUp(unsigned _n, vector<bool> & _b) {FitnessTraits::setUp(_n, _b);}
static bool maximizing(unsigned _i) { return FitnessTraits::maximizing(_i);}
/// Partial order based on Pareto-dominance
//bool operator<(const eoParetoFitness<FitnessTraits>& _other) const
bool dominates(const eoParetoFitness<FitnessTraits>& _other) const