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From: Ametrano F. <fer...@ca...> - 2007-04-23 10:54:58
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Dear Mark, Glad to hear back from you. > so how's it going? Fine. I've worked on Market Models: - cleaned up the code (checking for increasing times, avoided crashes due to null input vectors), - the AbcdVol and FlatVol MarketModel classes are now using PiecewiseConstantCorrelation base class interface and while integrating the covariance matrices I've managed to take into account the different correlation matrices. Since it is only between two evolution times that we can apply factor reduction, there is no more factor reduction in the PiecewiseConstantCorrelation derived classes. Next step would be to have a base class for volatility models as we now have for correlation models, so that AbcdVol and FlatVol would just collapse in a single generic class - moved our calibration code into CapletCoterminalSwaptionCalibration class, and took into account that factor reduction is not done in PiecewiseConstantCorrelation aymore. The function it's still there, but the Excel interface (i.e. results) is richer using the class with just one iteration. The Excel workbook has been updated accordingly I'm CC-ing qua...@li... so that everybody is updated Stay in touch Ciao -- Nando |