MLPACK
1.0.4
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Very, very simple test function which is the composite of three other functions. More...
Public Member Functions | |
SGDTestFunction () | |
Nothing to do for the constructor. | |
double | Evaluate (const arma::mat &coordinates, const size_t i) const |
Evaluate a function. | |
arma::mat | GetInitialPoint () const |
Get the starting point. | |
void | Gradient (const arma::mat &coordinates, const size_t i, arma::mat &gradient) const |
Evaluate the gradient of a function. | |
size_t | NumFunctions () const |
Return 3 (the number of functions). |
Very, very simple test function which is the composite of three other functions.
It turns out that although this function is very simple, optimizing it fully can take a very long time. It seems to take in excess of 10 million iterations with a step size of 0.0005.
Definition at line 35 of file test_function.hpp.
Nothing to do for the constructor.
Definition at line 39 of file test_function.hpp.
double mlpack::optimization::test::SGDTestFunction::Evaluate | ( | const arma::mat & | coordinates, |
const size_t | i | ||
) | const |
Evaluate a function.
arma::mat mlpack::optimization::test::SGDTestFunction::GetInitialPoint | ( | ) | const [inline] |
Get the starting point.
Definition at line 45 of file test_function.hpp.
void mlpack::optimization::test::SGDTestFunction::Gradient | ( | const arma::mat & | coordinates, |
const size_t | i, | ||
arma::mat & | gradient | ||
) | const |
Evaluate the gradient of a function.
size_t mlpack::optimization::test::SGDTestFunction::NumFunctions | ( | ) | const [inline] |
Return 3 (the number of functions).
Definition at line 42 of file test_function.hpp.