Exemplo n.º 1
0
int DDACEAlgorithmOptions::samplesForCentralComposite(const Problem& problem) {
  if (!problem.allVariablesAreContinuousOrStaticTransformations()) {
    LOG(Info,"Problem '" << problem.name() << "' has un-ignorable discrete variables, which "
        << "means that the central composite algorithm cannot be applied.");
    return 0;
  }
  int n = problem.numContinuousVariables();
  return 1 + 2*n + static_cast<int>(std::pow(2.0,n));
}
Exemplo n.º 2
0
int DDACEAlgorithmOptions::samplesForBoxBehnken(const Problem& problem) {
  if (!problem.allVariablesAreContinuousOrStaticTransformations()) {
    LOG(Info,"Problem '" << problem.name() << "' has un-ignorable discrete variables, which "
        << "means that the box-behnken algorithm cannot be applied.");
    return 0;
  }
  int n = problem.numContinuousVariables();
  return 1 + n * static_cast<int>(std::pow(2.0,n-1));
}
Exemplo n.º 3
0
 bool DDACEAlgorithmOptions_Impl::setSamplesForGrid(int numGridPartitions,const Problem& problem) {
   if (algorithmType() != DDACEAlgorithmType::grid) {
     LOG(Info,"This method only applies to the grid algorithm type, but '" << algorithmType() 
         << "' is selected.");
     return false;
   }
   if (!problem.allVariablesAreContinuousOrStaticTransformations()) {
     LOG(Info,"Problem '" << problem.name() << "' has un-ignorable discrete variables, which "
         << "means that the grid algorithm cannot be applied.");
     return false;
   }
   bool result = setSymbols(numGridPartitions);
   result = result && setSamples(static_cast<int>(std::pow((double)numGridPartitions,problem.numContinuousVariables())));
   return result;
 }
Exemplo n.º 4
0
  bool DDACEAlgorithm_Impl::isCompatibleProblemType(const Problem& problem) const {

    DDACEAlgorithmOptions options = ddaceAlgorithmOptions();

    // Some types only work for continuous problems.
    if (!problem.allVariablesAreContinuousOrStaticTransformations()) {
      switch (options.algorithmType().value()) {
        case DDACEAlgorithmType::central_composite :
        case DDACEAlgorithmType::box_behnken :
        case DDACEAlgorithmType::grid :
          LOG(Warn,"DDACE Central Composite, Box-Behnken and Grid algorithms only work with continuous "
              << "variables. (All discrete variables must be down-selected to 0-1 selected "
              << "perturbations.) DesignOfExperiments can be used to run a grid design on discrete "
              << "variables.");
          return false;
        default :
          break;
      }
    }

    return true;
  }