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arXiv 2101.03261math.OC
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混合随机SIS模型的最优控制与数值方法

Optimal Control and Numerical Methods for Hybrid Stochastic SIS Models

Ky Tran, George Yin

摘要:

研究了一类随机SIS传染病模型在状态转换下的最优控制问题。通过假设决策者可以影响传染期或隔离感染者,我们的目标是最小化由于疾病,医疗和对社会的不利影响的预期贴现成本。此外,提出了一个模型与疫苗接种。数值格式是通过使用马尔可夫链近似方法来近似连续时间动力学而开发的。结果表明,当网格步长趋于零时,逼近方案收敛于最优策略。数值例子来说明我们的结果。

英文摘要:

This work focuses on optimal controls of a class of stochastic SIS epidemic models under regime switching. By assuming that a decision maker can either influence the infectivity period or isolate infected individuals, our aim is to minimize the expected discounted cost due to illness, medical treatment, and the adverse effect on the society. In addition, a model with the incorporation of vaccination is proposed. Numerical schemes are developed by approximating the continuous-time dynamics using Markov chain approximation methods. It is demonstrated that the approximation schemes converge to the optimal strategy as the mesh size goes to zero. Numerical examples are provided to illustrate our results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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