indepTestChi2.cpp

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#include <agrum/base/stattests/indepTestChi2.h>
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS

#  ifdef GUM_NO_INLINE
#    include <agrum/base/stattests/indepTestChi2_inl.h>
#  endif /* GUM_NO_INLINE */
 
namespace gum {
 
  namespace learning {

    IndepTestChi2& IndepTestChi2::operator=(const IndepTestChi2& from) = default;

    IndepTestChi2& IndepTestChi2::operator=(IndepTestChi2&& from) noexcept {
      IndependenceTest::operator=(std::move(from));
      return *this;
    }

    std::pair< double, double > IndepTestChi2::statistics_(const IdCondSet& idset) {
      // computeStatistics_ guarantees margX * margY != 0 before calling this lambda,
      // so E > 0 is assured — no need to guard against division by zero here.
      return computeStatistics_(idset, [](double O, double margX, double margY, double total) {
        const double E = (margX * margY) / total;
        const double d = O - E;
        return (d * d) / E;
      });
    }
 
  } /* namespace learning */
 
} /* namespace gum */
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */