mlpack_optimization_test_SGDTestFunction3
Very, very simple test function which is the composite of three other functions.
Usage
Public Member Functions
SGDTestFunction ()
Return 3
(the
number
of
functions).
Detailed Description
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.
Constructor & Destructor Documentation
mlpack::optimization::test::SGDTestFunction::SGDTestFunction () [inline]
Nothing to do for the constructor.
Definition at line 39 of file test_function.hpp.
Member Function Documentation
double mlpack::optimization::test::SGDTestFunction::Evaluate (const arma::mat &coordinates, const size_ti) 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_ti, 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.