The tail of the distribution of a sum of a random number of independent and identically distributed nonnegative random variables depends on the tails of the number of terms and of the terms themselves. This situation is of interest in the collective risk model, where the total claim size in a portfolio is the sum of a random number of claims. If the tail of the claim number is heavier than the ...

There are two competing paradigms for modeling credit risk: the structural and reduced form models. This paper applies our knowledgeof creditmarket equilibriumto thisdebate.Weshowthat credit markets have asymmetric information in the borrowing and lending relationshipwhich influenceequilibriumprices. Reduced formmodels are consistent with asymmetric equilibrium models, but structural models are...

We consider a discrete-time insurance risk model, in which the financial risks constitute a stationary process with finite dimensional distributions of Farlie–Gumbel–Morgenstern type. We obtain an exact asymptotic formula for the ruin probability, reflecting the impact of this kind of association structure among the financial risks. r 2007 Elsevier B.V. All rights reserved.

From the outsourcer’s perspective, the IS outsourcing literature emphasizes the importance of contracts and risk awareness for managing outsourcing ventures. However, there is a lack of proven and tested outsourcing management concepts in theory and practise incorporating contractual designs to effectively counter risk. By extending the risk model of Bahli and Rivard (2001) we investigate the i...

A theoretical non-risk model was hypothesized to Harvest response to production and asymmetric explain the monthly harvest of food-size catfish. price risk was analyzed using an ordinary least After initial estimation, risk variables were incorposquares model. Statistically significant responses to rated into the model to account for production, input production-quality and output price risk we...

In risk management, ignoring the dependence among various types of claims often results in over-estimating or under-estimating the ruin probabilities of a portfolio. This paper focuses on three commonly used ruin probabilities in multivariate compound risk models, and using the comparison methods, shows how some ruin probabilities increase, whereas the other decreases, as the claim dependence g...

This paper discusses risk modeling and risk management in information and communications technology (ICT) systems for which the attack impact distribution is heavy tailed (e.g., power law distribution) and the average risk is unbounded. Systems with these properties include billing infrastructures used to charge customers for services they access. Attacks against billing infrastructures can be ...