Umberto, Cherubini; Sabrina, Mulinacci; Silvia, Romagnoli - In: Statistics & Risk Modeling 26 (2008) 2, pp. 75-88
We design a discrete time arbitrage-free model under incomplete information for application to credit risk models in the spirit of Duffie and Lando (2001). We assume a fundamental value process evolving according to a complete market model and a sequence of imperfect signals conveying...