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We define forward copula models and introduce the concept of "chaining" such models. We discuss the use of these concepts in the calibration to the term structure of tranche quotes.
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We present the SPA framework, a novel approach to the modeling of the dynamics of portfolio default losses. In this framework, models are specified by a two-layer process. The first layer models the dynamics of portfolio loss distributions in the absence of information about default times. This...
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