bbm::concepts::sampledlossfunction Concept Reference

sampled loss function concept More...

#include <sampledlossfunction.h>

Concept definition

template<typename LOSSFUNC>
concept bbm::concepts::sampledlossfunction =  requires(LOSSFUNC func)
    {
      requires concepts::lossfunction<LOSSFUNC>;
      
      { std::as_const(func).samples() } -> std::same_as<Size_t<LOSSFUNC>>;
 
      { std::as_const(func)(std::declval<Size_t<LOSSFUNC>>()) } -> std::same_as<Value_t<LOSSFUNC>>;
      { std::as_const(func)(std::declval<Size_t<LOSSFUNC>>(), std::declval<Mask_t<LOSSFUNC>>()) } -> std::same_as<Value_t<LOSSFUNC>>;
      requires concepts::has_addition<Value_t<LOSSFUNC>>;
    }

Detailed Description

sampled loss function concept

Each loss sampled function requires:

• concepts::lossfunction
• Size_t samples(void) const returns the number of samples.
• Value_t operator(Size_t index, Mask=true) const that returns the loss of the index-the sample
• The returned loss should support addition.