A multilevel approach for stochastic nonlinear optimal control
A multilevel approach for stochastic nonlinear optimal control
复制标题
随机非线性最优控制的多级方法
DOI:
10.1080/00207179.2020.1849805
复制
发表时间:
2019
影响因子:
2.1
通讯作者:
A. Bishop
中科院分区:
文献类型:
--
作者:
A. Jasra;J. Heng;Yaxian Xu;A. Bishop
We consider a class of finite-time horizon nonlinear stochastic optimal control problem. Although the optimal control admits a path integral representation for this class of control problems, efficient computation of the associated path integrals remains a challenging task. We propose a new Monte Carlo approach that significantly improves upon existing methodology. We tackle the issue of exponential growth in variance with the time horizon by casting optimal control estimation as a smoothing problem for a state-space model, and applying smoothing algorithms based on particle Markov chain Monte Carlo. To further reduce the cost, we then develop a multilevel Monte Carlo method which allows us to obtain an estimator of the optimal control with mean squared error with a cost of . In contrast, a cost of is required for the existing methodology to achieve the same mean squared error. Our approach is illustrated on two numerical examples.
影响因子:
1.5
作者:
Andrieu, Christophe;Lee, Anthony;Vihola, Matti
通讯作者:
Vihola, Matti
影响因子:
2.7
作者:
Giles, Michael B.
通讯作者:
Giles, Michael B.
影响因子:
14.2
作者:
Giles, Michael B.
通讯作者:
Giles, Michael B.