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arXiv 1906.05076math.PRmath.OC
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谱负Lévy过程的具有Paris破产的De Finetti控制问题

De Finetti's control problem with Parisian ruin for spectrally negative Lévy processes

Jean-François Renaud

摘要:

我们考虑de Finetti的随机控制问题时,(受控)过程被允许花费的时间下的临界水平。更确切地说,我们考虑了这个控制问题的广义版本中的谱负Lévy模型指数巴黎破产。我们证明了,在Lévy测度的温和假设下,一个最优策略是由一个障碍策略构成的,并且这个最优障碍水平总是小于经典破产时的最优障碍水平.同时,我们给出了零层障碍策略为最优的充要条件。

英文摘要:

We consider de Finetti's stochastic control problem when the (controlled) process is allowed to spend time under the critical level. More precisely, we consider a generalized version of this control problem in a spectrally negative Lévy model with exponential Parisian ruin. We show that, under mild assumptions on the Lévy measure, an optimal strategy is formed by a barrier strategy and that this optimal barrier level is always less than the optimal barrier level when classical ruin is implemented. Also, we give necessary and sufficient conditions for the barrier strategy at level zero to be optimal.

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