QuantLib_HullWhite_FittingParameter man page

HullWhite::FittingParameter — Analytical term-structure fitting parameter $ varphi(t) $.

Synopsis

#include <ql/models/shortrate/onefactormodels/hullwhite.hpp>

Inherits TermStructureFittingParameter.

Public Member Functions

FittingParameter (const Handle< YieldTermStructure > &termStructure, Real a, Real sigma)

Additional Inherited Members

Detailed Description

Analytical term-structure fitting parameter $ varphi(t) $.

$ varphi(t) $ is analytically defined by [ varphi(t) = f(t) + ac{1}{2}[ac{sigma(1-e^{-at})}{a}]^2, ] where $ f(t) $ is the instantaneous forward rate at $ t $.

Author

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Info

Fri Sep 1 2017 Version 1.10.1 QuantLib