数学物理学报(英文版) ›› 2020, Vol. 40 ›› Issue (1): 170-198.doi: 10.1007/s10473-020-0112-1

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OPTIMAL DIVIDEND-PENALTY STRATEGIES FOR INSURANCE RISK MODELS WITH SURPLUS-DEPENDENT PREMIUMS

李静伟1, 刘国欣2, 赵锦艳3   

  1. 1. School of Economics and Management, Hebei University of Technology, Tianjin 300401, China;
    2. Department of Applied Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
    3. School of Science, Hebei University of Technology, Tianjin 300401, China
  • 收稿日期:2018-10-25 修回日期:2019-02-23 出版日期:2020-02-25 发布日期:2020-04-14
  • 通讯作者: Jinyan ZHAO E-mail:zhaojinyan@hebut.edu.cn
  • 基金资助:
    This work was supported by National Natural Science Foundation of China (11471218), Hebei Higher School Science and Technology Research Projects (ZD20131017), Joint Doctoral Training Foundation of HEBUT (2018GN0001).

OPTIMAL DIVIDEND-PENALTY STRATEGIES FOR INSURANCE RISK MODELS WITH SURPLUS-DEPENDENT PREMIUMS

Jingwei LI1, Guoxin LIU2, Jinyan ZHAO3   

  1. 1. School of Economics and Management, Hebei University of Technology, Tianjin 300401, China;
    2. Department of Applied Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
    3. School of Science, Hebei University of Technology, Tianjin 300401, China
  • Received:2018-10-25 Revised:2019-02-23 Online:2020-02-25 Published:2020-04-14
  • Contact: Jinyan ZHAO E-mail:zhaojinyan@hebut.edu.cn
  • Supported by:
    This work was supported by National Natural Science Foundation of China (11471218), Hebei Higher School Science and Technology Research Projects (ZD20131017), Joint Doctoral Training Foundation of HEBUT (2018GN0001).

摘要: This paper concerns an optimal dividend-penalty problem for the risk models with surplus-dependent premiums. The objective is to maximize the difference of the expected cumulative discounted dividend payments received until the moment of ruin and a discounted penalty payment taken at the moment of ruin. Since the value function may be not smooth enough to be the classical solution of the HJB equation, the viscosity solution is involved. The optimal value function can be characterized as the smallest viscosity supersolution of the HJB equation and the optimal dividend-penalty strategy has a band structure. Finally, some numerical examples with gamma distribution for the claims are analyzed.

关键词: band strategy, risk models with surplus-dependent premiums, HJB equation, viscosity solution, Gerber-shiu function

Abstract: This paper concerns an optimal dividend-penalty problem for the risk models with surplus-dependent premiums. The objective is to maximize the difference of the expected cumulative discounted dividend payments received until the moment of ruin and a discounted penalty payment taken at the moment of ruin. Since the value function may be not smooth enough to be the classical solution of the HJB equation, the viscosity solution is involved. The optimal value function can be characterized as the smallest viscosity supersolution of the HJB equation and the optimal dividend-penalty strategy has a band structure. Finally, some numerical examples with gamma distribution for the claims are analyzed.

Key words: band strategy, risk models with surplus-dependent premiums, HJB equation, viscosity solution, Gerber-shiu function

中图分类号: 

  • 91B30