QuantLib: a free/open-source library for quantitative finance
Reference manual - version 1.40
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LeastSquareProblem Class Referenceabstract

Base class for least square problem. More...

#include <ql/math/optimization/leastsquare.hpp>

Public Member Functions

virtual Size size ()=0
 size of the problem ie size of target vector
virtual void targetAndValue (const Array &x, Array &target, Array &fct2fit)=0
 compute the target vector and the values of the function to fit
virtual void targetValueAndGradient (const Array &x, Matrix &grad_fct2fit, Array &target, Array &fct2fit)=0

Detailed Description

Base class for least square problem.

Member Function Documentation

◆ targetValueAndGradient()

virtual void targetValueAndGradient ( const Array & x,
Matrix & grad_fct2fit,
Array & target,
Array & fct2fit )
pure virtual

compute the target vector, the values of the function to fit and the matrix of derivatives