Struct template lazy_weighted_variance_impl

Boost , The Boost C++ Libraries BoostBook Documentation Subset , Reference

Struct template lazy_weighted_variance_impl

boost::accumulators::impl::lazy_weighted_variance_impl — Lazy calculation of variance of weighted samples.

Synopsis

// In header: <boost/accumulators/statistics_fwd.hpp>
template<typename Sample, typename Weight, typename MeanFeature> 
struct lazy_weighted_variance_impl : public accumulator_base {
  // construct/copy/destruct
  lazy_weighted_variance_impl(dont_care);
  // public member functions
  template<typename Args> result_type result(Args const &) const;
};

Description

Реализация дисперсии взвешенных образцов по умолчанию основана на втором моменте(weighted_moment<2>) и среднем(weighted_mean):

Equation 1.50. 

где— количество образцов.

lazy_weighted_variance_impl public construct/copy/destruct

1. <

   lazy_weighted_variance_impl(dont_care);

   >

lazy_weighted_variance_impl public member functions

1. <

   template<typenameArgs>result_typeresult(Argsconst&args)const;

   >

Статья Struct template lazy_weighted_variance_impl раздела The Boost C++ Libraries BoostBook Documentation Subset Reference может быть полезна для разработчиков на c++ и boost.

:: Главная :: Reference ::