CostFunction Class Reference
#include <ql/math/optimization/costfunction.hpp>
Inheritance diagram for CostFunction:

Detailed Description
Cost function abstract class for optimization problem.Public Member Functions | |
| virtual Real | value (const Array &x) const =0 |
| method to overload to compute the cost function value in x | |
| virtual Disposable< Array > | values (const Array &x) const =0 |
| method to overload to compute the cost function values in x | |
| virtual void | gradient (Array &grad, const Array &x) const |
| method to overload to compute grad_f, the first derivative of | |
| virtual Real | valueAndGradient (Array &grad, const Array &x) const |
| method to overload to compute grad_f, the first derivative of | |
| virtual Real | finiteDifferenceEpsilon () const |
| Default epsilon for finite difference method :. | |