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Public Member Functions | List of all members
EqBsParametrization Class Referenceabstract

EQ Black Scholes parametrizations. More...

#include <qle/models/eqbsparametrization.hpp>

+ Inheritance diagram for EqBsParametrization:

Public Member Functions

 EqBsParametrization (const Currency &eqCcy, const std::string &eqName, const Handle< Quote > &equitySpotToday, const Handle< Quote > &fxSpotToday, const Handle< YieldTermStructure > &equityIrCurveToday, const Handle< YieldTermStructure > &equityDivYieldCurveToday)
 
virtual Real variance (const Time t) const =0
 
virtual Real sigma (const Time t) const
 
virtual Real stdDeviation (const Time t) const
 
const Handle< Quote > eqSpotToday () const
 
const Handle< Quote > fxSpotToday () const
 
const Handle< YieldTermStructure > equityIrCurveToday () const
 
const Handle< YieldTermStructure > equityDivYieldCurveToday () const
 
Size numberOfParameters () const override
 
- Public Member Functions inherited from Parametrization
 Parametrization (const Currency &currency, const std::string &name="")
 
virtual const Currency & currency () const
 
virtual const Array & parameterTimes (const Size) const
 
virtual Array parameterValues (const Size) const
 
virtual const boost::shared_ptr< Parameterparameter (const Size) const
 
virtual void update () const
 
const std::string & name () const
 
virtual Real direct (const Size, const Real x) const
 
virtual Real inverse (const Size, const Real y) const
 

Additional Inherited Members

- Protected Member Functions inherited from Parametrization
Time tr (const Time t) const
 
Time tl (const Time t) const
 
Time tr2 (const Time t) const
 
Time tm2 (const Time t) const
 
Time tl2 (const Time t) const
 
- Protected Attributes inherited from Parametrization
const Real h_
 
const Real h2_
 

Detailed Description

EQ Black Scholes parametrizations.

Base class for EQ Black Scholes parametrizations

Constructor & Destructor Documentation

◆ EqBsParametrization()

EqBsParametrization ( const Currency &  eqCcy,
const std::string &  eqName,
const Handle< Quote > &  equitySpotToday,
const Handle< Quote > &  fxSpotToday,
const Handle< YieldTermStructure > &  equityIrCurveToday,
const Handle< YieldTermStructure > &  equityDivYieldCurveToday 
)

The currency refers to the equity currency, the equity and fx spots are as of today (i.e. the discounted spot)

Member Function Documentation

◆ variance()

virtual Real variance ( const Time  t) const
pure virtual

must satisfy variance(0) = 0.0, variance'(t) >= 0

Implemented in EqBsPiecewiseConstantParametrization, and EqBsConstantParametrization.

◆ sigma()

Real sigma ( const Time  t) const
virtual

is supposed to be positive

Reimplemented in EqBsPiecewiseConstantParametrization, and EqBsConstantParametrization.

◆ numberOfParameters()

Size numberOfParameters ( ) const
overridevirtual

the number of parameters in this parametrization

Reimplemented from Parametrization.