RastriginFunction Class Reference
The Rastrigin function, defined by. More...
Public Member Functions | |
| RastriginFunction (const size_t n) | |
| double | Evaluate (const arma::mat &coordinates, const size_t begin, const size_t batchSize) const |
| double | Evaluate (const arma::mat &coordinates) const |
| arma::mat | GetInitialPoint () const |
| Get the starting point. More... | |
| void | Gradient (const arma::mat &coordinates, const size_t begin, arma::mat &gradient, const size_t batchSize) const |
| void | Gradient (const arma::mat &coordinates, arma::mat &gradient) |
| size_t | NumFunctions () const |
| Return 1 (the number of functions). More... | |
| void | Shuffle () |
| Shuffle the order of function visitation. More... | |
Detailed Description
The Rastrigin function, defined by.
![\[ f(x) = 10 * d * \sum_{i=1}^{d} x_i^2 - 10 * \cos(2 * \pi * x_i) \]](form_108.png)
This should optimize to f(x) = 0 at x = [0, ..., 0].
For more information, please refer to:
@article{Jamil2013,
title = {Systems of extremal control},
author = {Rastrigin, L. A.},
journal = {Mir},
year = {1974}
}
Definition at line 42 of file rastrigin_function.hpp.
Constructor & Destructor Documentation
◆ RastriginFunction()
| RastriginFunction | ( | const size_t | n | ) |
Member Function Documentation
◆ Evaluate() [1/2]
| double Evaluate | ( | const arma::mat & | coordinates, |
| const size_t | begin, | ||
| const size_t | batchSize | ||
| ) | const |
Referenced by RastriginFunction::GetInitialPoint().
◆ Evaluate() [2/2]
| double Evaluate | ( | const arma::mat & | coordinates | ) | const |
◆ GetInitialPoint()
|
inline |
Get the starting point.
Definition at line 62 of file rastrigin_function.hpp.
References RastriginFunction::Evaluate(), and RastriginFunction::Gradient().
◆ Gradient() [1/2]
| void Gradient | ( | const arma::mat & | coordinates, |
| const size_t | begin, | ||
| arma::mat & | gradient, | ||
| const size_t | batchSize | ||
| ) | const |
Referenced by RastriginFunction::GetInitialPoint().
◆ Gradient() [2/2]
| void Gradient | ( | const arma::mat & | coordinates, |
| arma::mat & | gradient | ||
| ) |
◆ NumFunctions()
|
inline |
Return 1 (the number of functions).
Definition at line 59 of file rastrigin_function.hpp.
◆ Shuffle()
| void Shuffle | ( | ) |
Shuffle the order of function visitation.
This may be called by the optimizer.
The documentation for this class was generated from the following file:
- src/mlpack/core/optimizers/problems/rastrigin_function.hpp