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DefaultDensityStructure Class Reference

Default-density term structure. More...

#include <defaultdensitystructure.hpp>

+ Inheritance diagram for DefaultDensityStructure:
+ Collaboration diagram for DefaultDensityStructure:

Public Member Functions

Constructors

See the TermStructure documentation for issues regarding constructors.

 DefaultDensityStructure (const DayCounter &dayCounter=DayCounter(), const std::vector< Handle< Quote > > &jumps={}, const std::vector< Date > &jumpDates={})
 
 DefaultDensityStructure (const Date &referenceDate, const Calendar &cal=Calendar(), const DayCounter &dayCounter=DayCounter(), const std::vector< Handle< Quote > > &jumps={}, const std::vector< Date > &jumpDates={})
 
 DefaultDensityStructure (Natural settlementDays, const Calendar &cal, const DayCounter &dayCounter=DayCounter(), const std::vector< Handle< Quote > > &jumps={}, const std::vector< Date > &jumpDates={})
 
- Public Member Functions inherited from DefaultProbabilityTermStructure
 DefaultProbabilityTermStructure (const DayCounter &dc=DayCounter(), std::vector< Handle< Quote > > jumps={}, const std::vector< Date > &jumpDates={})
 
 DefaultProbabilityTermStructure (const Date &referenceDate, const Calendar &cal=Calendar(), const DayCounter &dc=DayCounter(), std::vector< Handle< Quote > > jumps={}, const std::vector< Date > &jumpDates={})
 
 DefaultProbabilityTermStructure (Natural settlementDays, const Calendar &cal, const DayCounter &dc=DayCounter(), std::vector< Handle< Quote > > jumps={}, const std::vector< Date > &jumpDates={})
 
Probability survivalProbability (const Date &d, bool extrapolate=false) const
 
Probability survivalProbability (Time t, bool extrapolate=false) const
 
Probability defaultProbability (const Date &d, bool extrapolate=false) const
 
Probability defaultProbability (Time t, bool extrapolate=false) const
 
Probability defaultProbability (const Date &, const Date &, bool extrapolate=false) const
 probability of default between two given dates More...
 
Probability defaultProbability (Time, Time, bool extrapo=false) const
 probability of default between two given times More...
 
Real defaultDensity (const Date &d, bool extrapolate=false) const
 
Real defaultDensity (Time t, bool extrapolate=false) const
 
Rate hazardRate (const Date &d, bool extrapolate=false) const
 
Rate hazardRate (Time t, bool extrapolate=false) const
 
const std::vector< Date > & jumpDates () const
 
const std::vector< Time > & jumpTimes () const
 
void update () override
 
- Public Member Functions inherited from TermStructure
 TermStructure (DayCounter dc=DayCounter())
 default constructor More...
 
 TermStructure (const Date &referenceDate, Calendar calendar=Calendar(), DayCounter dc=DayCounter())
 initialize with a fixed reference date More...
 
 TermStructure (Natural settlementDays, Calendar, DayCounter dc=DayCounter())
 calculate the reference date based on the global evaluation date More...
 
 ~TermStructure () override=default
 
virtual DayCounter dayCounter () const
 the day counter used for date/time conversion More...
 
Time timeFromReference (const Date &date) const
 date/time conversion More...
 
virtual Date maxDate () const =0
 the latest date for which the curve can return values More...
 
virtual Time maxTime () const
 the latest time for which the curve can return values More...
 
virtual const DatereferenceDate () const
 the date at which discount = 1.0 and/or variance = 0.0 More...
 
virtual Calendar calendar () const
 the calendar used for reference and/or option date calculation More...
 
virtual Natural settlementDays () const
 the settlementDays used for reference date calculation More...
 
- Public Member Functions inherited from Observer
 Observer ()=default
 
 Observer (const Observer &)
 
Observeroperator= (const Observer &)
 
virtual ~Observer ()
 
std::pair< iterator, boolregisterWith (const ext::shared_ptr< Observable > &)
 
void registerWithObservables (const ext::shared_ptr< Observer > &)
 
Size unregisterWith (const ext::shared_ptr< Observable > &)
 
void unregisterWithAll ()
 
virtual void update ()=0
 
virtual void deepUpdate ()
 
- Public Member Functions inherited from Observable
 Observable ()
 
 Observable (const Observable &)
 
Observableoperator= (const Observable &)
 
 Observable (Observable &&)=delete
 
Observableoperator= (Observable &&)=delete
 
virtual ~Observable ()=default
 
void notifyObservers ()
 
- Public Member Functions inherited from Extrapolator
 Extrapolator ()=default
 
virtual ~Extrapolator ()=default
 
void enableExtrapolation (bool b=true)
 enable extrapolation in subsequent calls More...
 
void disableExtrapolation (bool b=true)
 disable extrapolation in subsequent calls More...
 
bool allowsExtrapolation () const
 tells whether extrapolation is enabled More...
 

Protected Member Functions

DefaultProbabilityTermStructure implementation
Probability survivalProbabilityImpl (Time) const override
 survival probability calculation More...
 
- Protected Member Functions inherited from DefaultProbabilityTermStructure
virtual Real defaultDensityImpl (Time) const =0
 default density calculation More...
 
virtual Real hazardRateImpl (Time) const
 hazard rate calculation More...
 
- Protected Member Functions inherited from TermStructure
void checkRange (const Date &d, bool extrapolate) const
 date-range check More...
 
void checkRange (Time t, bool extrapolate) const
 time-range check More...
 

Additional Inherited Members

- Public Types inherited from Observer
typedef set_type::iterator iterator
 
- Protected Attributes inherited from TermStructure
bool moving_ = false
 
bool updated_ = true
 
Calendar calendar_
 

Detailed Description

Default-density term structure.

This abstract class acts as an adapter to DefaultProbabilityTermStructure allowing the programmer to implement only the defaultDensityImpl(Time) method in derived classes.

Survival/default probabilities and hazard rates are calculated from default densities.

Definition at line 43 of file defaultdensitystructure.hpp.

Constructor & Destructor Documentation

◆ DefaultDensityStructure() [1/3]

DefaultDensityStructure ( const DayCounter dayCounter = DayCounter(),
const std::vector< Handle< Quote > > &  jumps = {},
const std::vector< Date > &  jumpDates = {} 
)

Definition at line 49 of file defaultdensitystructure.cpp.

◆ DefaultDensityStructure() [2/3]

DefaultDensityStructure ( const Date referenceDate,
const Calendar cal = Calendar(),
const DayCounter dayCounter = DayCounter(),
const std::vector< Handle< Quote > > &  jumps = {},
const std::vector< Date > &  jumpDates = {} 
)

Definition at line 55 of file defaultdensitystructure.cpp.

◆ DefaultDensityStructure() [3/3]

DefaultDensityStructure ( Natural  settlementDays,
const Calendar cal,
const DayCounter dayCounter = DayCounter(),
const std::vector< Handle< Quote > > &  jumps = {},
const std::vector< Date > &  jumpDates = {} 
)

Definition at line 63 of file defaultdensitystructure.cpp.

Member Function Documentation

◆ survivalProbabilityImpl()

Probability survivalProbabilityImpl ( Time  t) const
overrideprotectedvirtual

survival probability calculation

implemented in terms of the default density \( p(t) \) as

\[ S(t) = 1 - \int_0^t p(\tau) d\tau. \]

Warning:
This default implementation uses numerical integration, which might be inefficient and inaccurate. Derived classes should override it if a more efficient implementation is available.

Implements DefaultProbabilityTermStructure.

Reimplemented in InterpolatedDefaultDensityCurve< Interpolator >.

Definition at line 71 of file defaultdensitystructure.cpp.

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