Qi, Howard; Xie, Yan Alice; Liu, Sheen - In: The International Journal of Business and Finance Research 4 (2010) 1, pp. 37-49
This paper examines one of the major problems in credit risk models widely used in the financial industry to forecast future defaults and bankruptcies. We find that even after proper calibration, a representative credit risk model can severely underestimate default correlation. We further find...