In this paper we make a comparison between two composite models: lognormal-Pareto and Weibull-Pareto. The first one was introduced by Cooray and Ananda in 2005. The second composite distribution was constructed in the same manner as lognormal-Pareto. Here, we prove that these models behave...

Multicriteria portfolio optimization started with the Markowitz mean-variance model (Markowitz 1952, 1959). This model assumes that the goal of an average or standard investor is to maximize the unknown return on investment. In this paper we propose a risk model related to insurance industry....