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Risk aggregation with dependence and overdispersion based on the compound Poisson INAR(1) process

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  • Mi Chen
  • Xiang Hu

Abstract

This paper considers an extension of the classical discrete time risk model for which the claim numbers are assumed to be temporal dependence and overdispersion. The risk model proposed is based on the first-order integer-valued autoregressive (INAR(1)) process with discrete compound Poisson distributed innovations. The explicit expression for the moment generating function of the discounted aggregate claim amount is derived. Some numerical examples are provided to illustrate the impacts of dependence and overdispersion on related quantities such as the stop-loss premium, the value at risk and the tail value at risk.

Suggested Citation

  • Mi Chen & Xiang Hu, 2020. "Risk aggregation with dependence and overdispersion based on the compound Poisson INAR(1) process," Communications in Statistics - Theory and Methods, Taylor & Francis Journals, vol. 49(16), pages 3985-4001, August.
    • Handle: RePEc:taf:lstaxx:v:49:y:2020:i:16:p:3985-4001
    DOI: 10.1080/03610926.2019.1594297
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