Extending short-rate models for credit / inflation.

Posted by Simon Ibbotson-2 on
URL: http://quantlib.414.s1.nabble.com/Extending-short-rate-models-for-credit-inflation-tp13367.html

Hi,

 

I’m looking at extending the definitions in the short-rate models for credit (or inflation) purposes.

Problems arise with the TermStructureConsistentModel, TermStructureFittingParameters etc.

There are two possible approaches:

 

1)       Specialise using templates for the short-rate models.

2)       Specialise by adding to the TermStructure class.

 

The first method requires rewriting of many classes within a template structure – and specialising some of the class functions to return the survival probability instead of the discount factor. The second requires adding a function named oneFactorPrimitive() (or similar) to TermStructure which specialises using the standard C++ inheritance.

 

I’m leaning towards the second method as it is much simpler.

 

Any advice?

 

Simon

 

 



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