On the severity of ruin in a Markov-modulated risk model

Yi Lu

Scandinavian Actuarial Journal, 2006, vol. 2006, issue 4, 183-202

Abstract: We consider a Markov-modulated risk model in which the claim inter-arrivals, amounts and premiums are influenced by an external Markovian environment process. A system of Laplace transforms of the probabilities of the severity of ruin, given the initial environment state, is established from a system of integro-differential equations derived by Snoussi [The severity of ruin in Markov-modulated risk models Schweiz Aktuarver. Mitt., 2002, 1, 31–43]. In the two-state model, explicit formulas for probabilities of the severity of ruin are derived, when the initial reserve is zero or when both claim amount distributions are from the rational family. Numerical illustrations are also given.

Date: 2006
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DOI: 10.1080/03461230600889652

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