pass::schwefel_function Class Reference
#include <schwefel_function.hpp>
Inheritance diagram for pass::schwefel_function:
Collaboration diagram for pass::schwefel_function:
Public Member Functions | |
| schwefel_function (const arma::uword dimension) | |
| double | evaluate (const arma::vec &agent) const override |
 Public Member Functions inherited from pass::problem | |
| arma::vec | bounds_range () const noexcept |
| arma::uword | dimension () const noexcept |
| problem (const arma::uword dimension, const double lower_bound, const double upper_bound, const std::string &name) | |
| problem (const arma::vec &lower_bounds, const arma::vec &upper_bounds, const std::string &name) | |
| double | evaluate_normalised (const arma::vec &normalised_agent) const |
| arma::mat | normalised_random_agents (const arma::uword count) const |
| arma::mat | normalised_hammersley_agents (const arma::uword count) const |
| arma::mat | initialise_normalised_agents (const arma::uword count) const |
Additional Inherited Members | |
| Public Attributes inherited from pass::problem | |
| const arma::vec | lower_bounds |
| const arma::vec | upper_bounds |
| const std::string | name |
Detailed Description
The Schwefel function is complex, with many local minima.
Its optimal parameter = (420.9687, ..., 420.9687) and optimal function value = 0. In this implementation for the optimal parameter the function value = 5.42627e-10.
\[ f(x_1 \cdots x_n) = \sum_{i=1}^n (-x_i sin(\sqrt{|x_i|})) + \alpha \cdot n \]
\[ \alpha = 418.982887 \]
\[ 500.00 \leq x_i \leq 500.00 \]
\[ \text{minimum at }f(420.968746, 420.968746, \cdots, 420.968746) = 0 \]
Constructor & Destructor Documentation
◆ schwefel_function()
|
explicit |
Initialises a schwefel function with dimension dimensions, lower bounds of -500.0 and upper bounds of 500.0.
Member Function Documentation
◆ evaluate()
|
overridevirtual |
Evaluates this problem at agent, which must match the dimensions of this problem.
Implements pass::problem.
The documentation for this class was generated from the following files:
- /Users/romeo/Desktop/PASS/include/pass_bits/problem/optimisation_benchmark/schwefel_function.hpp
- /Users/romeo/Desktop/PASS/src/problem/optimisation_benchmark/schwefel_function.cpp