Contents -- Chapter 1 Determinants of small business default, Sumit Agarwal, Souphala Chomsisengphet and Chunlin Liu -- Chapter 2 Validation of stress testing models, Jospeh L. Breeden -- Chapter 3 The validity of credit risk model validation methods, George Christodoulakis and Stephen Satchell -- Chapter 4 A moment-based procedure for evaluating risk forecasting models, Kevin Dowd -- -- Chpater 5 Measuring concentration risk in credit portfolios, Klaus Duellmann -- Chapter 6 A simple method for regulators to cross-check operational risk loss models for banks, Wayne Holland and ManMohan S. Sodhi -- Chapter 7 Of the credibility of mapping and bencmarking credit risk estimates for internal rating systems, Vichett Oung -- Chapter 8 Analytic models of the ROC curve: Applications to credit rating model validation, Stephen Satchell and Wei Xia -- Chapter 9 The validation of the equity portfolio risk models, Stephen Satchell -- Chapter 10 Dynamic risk analysis and risk model evaluation, Gunter Schwarz and Christoph Kessler -- Chapter 11 Validation of internal rating systems and PD esitmates, Dirk Tasche -- Index.