DBTranslator4DiscretizedVariable_tpl.h

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#pragma once
 

 
#include <sstream>
#include <utility>
#include <vector>
 
#include <agrum/base/database/DBCell.h>
#include <agrum/base/database/DBTranslator4DiscretizedVariable.h>
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
namespace gum {
 
  namespace learning {
 

    template < typename GUM_SCALAR >
    DBTranslator4DiscretizedVariable::DBTranslator4DiscretizedVariable(
        const DiscretizedVariable< GUM_SCALAR >& var,
        const std::vector< std::string >&        missing_symbols,
        std::size_t                              max_dico_entries) :
        DBTranslator(DBTranslatedValueType::DISCRETE,
                     false,
                     missing_symbols,
                     false,
                     max_dico_entries),
        _variable_(var.name(), var.description()) {
      // check that the variable has not too many entries
      if (var.domainSize() > max_dico_entries) {
        GUM_ERROR(SizeError, "the dictionary induced by the variable is too large")
      }
 
      // copy the ticks of var into our internal variable
      const auto& ticks = var.ticks();
      for (const auto tick: ticks) {
        _variable_.addTick((float)tick);
      }
 
      // the the bounds of the discretized variable
      const auto lower_bound = (float)ticks[0];
      const auto upper_bound = (float)ticks.back();
 
      // remove all the missing symbols corresponding to a number between
      // lower_bound and upper_bound
      for (auto iter = this->missing_symbols_.beginSafe(); iter != this->missing_symbols_.endSafe();
           ++iter) {
        if (DBCell::isReal(*iter)) {
          const float missing_val = std::stof(*iter);
          if ((missing_val >= lower_bound) && (missing_val <= upper_bound)) {
            this->missing_symbols_.erase(iter);
          }
        }
      }
 
      // add the content of the variable into the back dictionary
      std::size_t size = 0;
      for (const auto& label: var.labels()) {
        // if the label corresponds to a missing value, then remove it from
        // the set of missing symbols. If, in addition, it has already
        // been entered into the back_dictionary, then, this has been done
        // because the label corresponded to a missing value, so we should
        // remove the label as well from the back_dictionary.
        if (this->missing_symbols_.exists(label)) { this->missing_symbols_.erase(label); }
 
        this->back_dico_.insert(size, label);
        ++size;
      }
 
      // store a copy of the variable, that should be used by method variable ()
      _real_variable_ = var.clone();
 
      GUM_CONSTRUCTOR(DBTranslator4DiscretizedVariable);
    }

    template < typename GUM_SCALAR >
    DBTranslator4DiscretizedVariable::DBTranslator4DiscretizedVariable(
        const DiscretizedVariable< GUM_SCALAR >& var,
        std::size_t                              max_dico_entries) :
        DBTranslator(DBTranslatedValueType::DISCRETE, false, false, max_dico_entries),
        _variable_(var.name(), var.description()) {
      // check that the variable has not too many entries
      if (var.domainSize() > max_dico_entries) {
        GUM_ERROR(SizeError, "the dictionary induced by the variable is too large")
      }
 
      // copy the ticks of var into our internal variable
      const auto& ticks = var.ticks();
      for (const auto tick: ticks) {
        _variable_.addTick((float)tick);
      }
 
      // add the content of the variable into the back dictionary
      std::size_t size = 0;
      for (const auto& label: var.labels()) {
        this->back_dico_.insert(size, label);
        ++size;
      }
 
      // store a copy of the variable, that should be used by method variable ()
      _real_variable_ = var.clone();
 
      GUM_CONSTRUCTOR(DBTranslator4DiscretizedVariable);
    }
 
 
  } /* namespace learning */
 
} /* namespace gum */
 
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */