Stats.hpp

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#pragma once
 
#include "utils/Types.hpp"
#include "utils/Invariant.hpp"
 
#include <set>
#include <stdexcept>
#include <pcg_random.hpp>

namespace ppforest2::stats {
  using RNG = pcg32;
 

  void sort(types::FeatureMatrix& x, types::ResponseVector& y);

  std::set<types::Response> unique(types::ResponseVector const& column);

  float accuracy(types::ResponseVector const& predictions, types::ResponseVector const& actual);

  double error_rate(types::ResponseVector const& predictions, types::ResponseVector const& actual);

  double sd(types::FeatureVector const& data);

  types::FeatureVector sd(types::FeatureMatrix const& data);
}