accuracy_impl.hpp

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#ifndef MLPACK_CORE_CV_METRICS_ACCURACY_IMPL_HPP
#define MLPACK_CORE_CV_METRICS_ACCURACY_IMPL_HPP

namespace mlpack {
namespace cv {

template<typename MLAlgorithm, typename DataType>
double Accuracy::Evaluate(MLAlgorithm& model,
                          const DataType& data,
                          const arma::Row<size_t>& labels)
{
  util::CheckSameSizes(data, labels, "Accuracy::Evaluate()");

  arma::Row<size_t> predictedLabels;
  model.Classify(data, predictedLabels);
  size_t amountOfCorrectPredictions = arma::sum(predictedLabels == labels);

  return (double) amountOfCorrectPredictions / labels.n_elem;
}

} // namespace cv
} // namespace mlpack

#endif