In a recent paper [Albrecher, Constantinescu and Loisel (2011). Explicit ruin formulas for models with dependence among risks. Insurance: Mathematics and Economics 48(2), 265 – 270] Professors Hansjörg Albrecher, Corina Constantinescu and Stephane Loisel noted – in passing – a way to...

One way to formulate a multivariate probability distribution with dependent univariate margins distributed gamma is by using the closure under convolutions property. This direction yields an additive background risk model, and it has been very well-studied. An alternative way to accomplish the...

We demonstrate both analytically and numerically that the existing methods for measuring tail dependence in copulas may sometimes underestimate the extent of extreme co-movements of dependent risks and, therefore, may not always comply with the new paradigm of prudent risk management. This...

We introduce a class of dependence structures, that we call the Multiple Risk Factor (MRF) dependence structures. On the one hand, the new constructions extend the popular CreditRisk approach, and as such they formally describe default risk portfolios exposed to an arbitrary number of fatal risk...