num_collect::opt::concepts::line_searcher Concept Reference

Concept of objects to perform line search in optimization. More...

#include <num_collect/opt/concepts/line_searcher.h>

Concept definition

template<typename T>
concept num_collect::opt::concepts::line_searcher =  requires() {
    typename T::objective_function_type;
    requires differentiable_objective_function<
        typename T::objective_function_type>;
 
    typename T::variable_type;
    requires std::is_same_v<typename T::variable_type,
        typename T::objective_function_type::variable_type>;
 
    typename T::value_type;
    requires std::is_same_v<typename T::value_type,
        typename T::objective_function_type::value_type>;
 
    requires requires(T& obj, const typename T::variable_type& init_variable) {
        { obj.init(init_variable) };
    };
 
    requires requires(T& obj, const typename T::variable_type& direction) {
        { obj.search(direction) };
    };
 
    requires requires(T& obj) {
        {
            obj.obj_fun()
        } -> base::concepts::reference_of<typename T::objective_function_type>;
    };
 
    requires requires(const T& obj) {
        {
            obj.obj_fun()
        } -> base::concepts::const_reference_of<
            typename T::objective_function_type>;
 
        {
            obj.opt_variable()
        } -> base::concepts::const_reference_of<typename T::variable_type>;
 
        {
            obj.opt_value()
        } -> base::concepts::const_reference_of<typename T::value_type>;
 
        {
            obj.gradient()
        } -> base::concepts::const_reference_of<typename T::variable_type>;
 
        {
            obj.evaluations()
        } -> base::concepts::implicitly_convertible_to<index_type>;
    };
}

Detailed Description

Concept of objects to perform line search in optimization.

Template Parameters

T

Type.

Definition at line 38 of file line_searcher.h.