NAME¶

mlpack::optimization::test::SGDTestFunction - Very, very simple test function which is the composite of three other functions.

SYNOPSIS¶

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).

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.

Author¶

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