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arXiv 2201.06854math.OCcs.NAmath.NAmath.PRstat.ML
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随机控制鲁棒深度FBSDE方法的收敛性

Convergence of a robust deep FBSDE method for stochastic control

Kristoffer Andersson, Adam Andersson, Cornelis W. Oosterlee

摘要:

在本文中,我们提出了一种基于深度学习的数值方案,用于强耦合FBSDES,源于随机控制。它是一种改进的深度Beveling方法,其中向后方程的初始值不是自由参数,新的损失函数是控制问题代价的加权和,方差项与终端条件下的均方误差一致。我们通过一个数值例子表明,经典的深Bundle方法FBSDES的直接扩展,失败的一个简单的线性二次控制问题,并激发为什么新方法的作品。在连续时间和离散时间控制问题的精确控制的正则性和有界性假设下,给出了该方法的误差分析。我们的经验表明,该方法收敛于三个不同的问题,一个是一个失败的直接扩展的深Bendash方法。

英文摘要:

In this paper, we propose a deep learning based numerical scheme for strongly coupled FBSDEs, stemming from stochastic control. It is a modification of the deep BSDE method in which the initial value to the backward equation is not a free parameter, and with a new loss function being the weighted sum of the cost of the control problem, and a variance term which coincides with the mean squared error in the terminal condition. We show by a numerical example that a direct extension of the classical deep BSDE method to FBSDEs, fails for a simple linear-quadratic control problem, and motivate why the new method works. Under regularity and boundedness assumptions on the exact controls of time continuous and time discrete control problems, we provide an error analysis for our method. We show empirically that the method converges for three different problems, one being the one that failed for a direct extension of the deep BSDE method.

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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