예제 #1
0
/*------------------------------------------------------------------*/
void NOMAD::Phase_One_Evaluator::compute_f(NOMAD::Eval_Point &x) const
{
    if (x.get_bb_outputs().size() != _p.get_bb_nb_outputs())
    {
        std::ostringstream err;
        err << "Phase_One_Evaluator::compute_f(x): "
            << "x has a wrong number of blackbox outputs ("
            << x.get_bb_outputs().size() <<  " != " << _p.get_bb_nb_outputs() << ")";
        throw NOMAD::Exception("Phase_One_Evaluator.cpp" , __LINE__ , err.str());
    }

    // objective value for MADS phase 1: the squared sum of all EB constraint violations
    // (each EB constraint has been previously transformed into OBJ values):
    const std::list<int>                &index_obj = _p.get_index_obj();
    const std::list<int>::const_iterator end       = index_obj.end();
    const NOMAD::Point                  &bbo       = x.get_bb_outputs();
    NOMAD::Double                        h_min     = _p.get_h_min();
    NOMAD::Double                        sum       = 0.0;
    NOMAD::Double                        v;

    for (std::list<int>::const_iterator it = index_obj.begin() ; it != end ; ++it)
    {
        v = bbo[*it];
        if (v > h_min)
            sum += v.pow2();
    }

    x.set_f(sum);
}
예제 #2
0
 /*-----------------------------------------------------------------------*/
 bool NOMAD::Evaluator::interrupt_evaluations ( const NOMAD::Eval_Point & x     ,
                                               const NOMAD::Double     & h_max   ) const
 {
     int                                        nbo     = _p.get_bb_nb_outputs();
     const NOMAD::Point                       & bbo     = x.get_bb_outputs();
     const std::vector<NOMAD::bb_output_type> & bbot    = _p.get_bb_output_type();
     NOMAD::Double                              h       = 0.0;
     bool                                       check_h = h_max.is_defined();
     
     for ( int i = 0 ; i < nbo ; ++i ) {
         
         if ( bbo[i].is_defined()                                 &&
             ( bbot[i] == NOMAD::EB || bbot[i] == NOMAD::PEB_E ) &&
             bbo[i] > _p.get_h_min() )
             return true;
         
         if ( check_h && bbo[i].is_defined() &&
             (bbot[i] == NOMAD::FILTER ||
              bbot[i] == NOMAD::PB     ||
              bbot[i] == NOMAD::PEB_P     ) ) {
                 
                 if ( bbo[i] > _p.get_h_min() ) {
                     switch ( _p.get_h_norm() ) {
                         case NOMAD::L1:
                             h += bbo[i];
                             break;
                         case NOMAD::L2:
                             h += bbo[i].pow2();
                             break;
                         case NOMAD::LINF:
                             if ( bbo[i] > h )
                                 h = bbo[i];
                             break;
                     }
                     
                     if ( _p.get_h_norm() == NOMAD::L2 ) {
                         if ( h > h_max.pow2() )
                             return true;
                     }
                     else if ( h > h_max )
                         return true;
                 }
             }
     }
     return false;
 }