Using a limiting approach to portfolio credit risk, we obtain analyticexpressions for the tail behavior of the distribution of credit losses. We showthat in many cases of practical interest the distribution of these losses haspolynomial ('fat') rather than exponential ('thin') tails. Our...

Holst (1985) introduced a discrete spacings model that is related to the Bose-Einstein distribution and obtained the distribution of the number of vacant slots in an associated circle covering problem. We correct his expression for its probability mass function, obtain the first two moments, and...

Principal component analysis (PCA) is a well established technique for data analysis and processing. Recently, it has been shown that the principal axes of a set of observed data vectors might be determined trough maximum likelihood estimation of parameter in a specific form of latent variable...