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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/weighted_variance.hpp>

template<typename Sample, typename Weight, typename MeanFeature> 
struct lazy_weighted_variance_impl : public  {
  // types
  typedef     ;
  typedef  ;    

  // construct/copy/destruct
  ();

  // public member functions
  template<typename Args>  () ;
};

Description

The default implementation of the variance of weighted samples is based on the second moment (weighted_moment<2>) and the mean (weighted_mean):

Equation 1.48. 


where is the number of samples.

lazy_weighted_variance_impl public construct/copy/destruct

  1. ();

lazy_weighted_variance_impl public member functions

  1. template<typename Args>  ( args) ;

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