Robuta

https://www.boost.org/doc/libs/1_51_0/doc/html/boost/accumulators/impl/with_density_weig_id574254.html

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/extract/weighted_median.html

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/impl/weighted_median_impl.html

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/as_feature_tag_idp27278880.html