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On the Moments of the Time of Ruin with Applications to Phase-Type Claims

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  • Steve Drekic
  • Gordon Willmot

Abstract

We describe an approach to the evaluation of the moments of the time of ruin in the classical Poisson risk model. The methodology employed involves the expression of these moments in terms of linear combinations of convolutions involving compound negative binomial distributions. We then adapt the results for use in the practically important case involving phase-type claim size distributions. We present numerical examples to illuminate the influence of claim size variability on the moments of the time of ruin.

Suggested Citation

  • Steve Drekic & Gordon Willmot, 2005. "On the Moments of the Time of Ruin with Applications to Phase-Type Claims," North American Actuarial Journal, Taylor & Francis Journals, vol. 9(2), pages 17-30.
    • Handle: RePEc:taf:uaajxx:v:9:y:2005:i:2:p:17-30
    DOI: 10.1080/10920277.2005.10596195
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    Cited by:

    1. Landriault, David & Lemieux, Christiane & Willmot, Gordon E., 2012. "An adaptive premium policy with a Bayesian motivation in the classical risk model," Insurance: Mathematics and Economics, Elsevier, vol. 51(2), pages 370-378.
    2. Lee, Wing Yan & Willmot, Gordon E., 2014. "On the moments of the time to ruin in dependent Sparre Andersen models with emphasis on Coxian interclaim times," Insurance: Mathematics and Economics, Elsevier, vol. 59(C), pages 1-10.
    3. Upadhye, N.S. & Vellaisamy, P., 2013. "Improved bounds for approximations to compound distributions," Statistics & Probability Letters, Elsevier, vol. 83(2), pages 467-473.
    4. Vaios Dermitzakis & Konstadinos Politis, 2011. "Asymptotics for the Moments of the Time to Ruin for the Compound Poisson Model Perturbed by Diffusion," Methodology and Computing in Applied Probability, Springer, vol. 13(4), pages 749-761, December.
    5. Alessandra Carleo & Mariafortuna Pietroluongo, 2014. "On matrix-exponential distributions in risk theory," Discussion Papers 2_2014, CRISEI, University of Naples "Parthenope", Italy.
    6. Jiechang Ruan & Wenguang Yu & Ke Song & Yihan Sun & Yujuan Huang & Xinliang Yu, 2019. "A Note on a Generalized Gerber–Shiu Discounted Penalty Function for a Compound Poisson Risk Model," Mathematics, MDPI, vol. 7(10), pages 1-12, September.

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