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arXiv 2408.08046math.OCmath.PR
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带广义平均场动力学的最优控制问题与Master Bellman方程的粘性解

Optimal control problems with generalized mean-field dynamics and viscosity solution to Master Bellman equation

Rainer Buckdahn, Juan Li, Zhanxin Li

AI总结:

针对常规值函数不满足动态规划原理的广义平均场开环控制最优问题,引入关联新值函数并建立其DPP,证明其为Master Bellman方程的粘性解且在特定系数下唯一,推广了已有平均场PDE结果。

摘要:

我们研究一类带开环控制的广义平均场动力学最优控制问题,其系数不仅依赖于状态过程与控制,还依赖于二者的联合分布。按常规方式定义的值函数$V$不满足动态规划原理(简称DPP)。为此,我们巧妙引入了一个与原值函数$V$密切相关的新型值函数$\boldsymbol{\theta}$,使得对$\boldsymbol{\theta}$的偏微分方程(PDE)解的刻画也能表征$V$。我们建立了$\boldsymbol{\theta}$的动态规划原理。借助最初由Burzoni、Ignazio、Reppen和Soner[8]提出、专门适配我们框架的一种内蕴粘性解概念,我们证明值函数$\boldsymbol{\theta}$是概率测度Wasserstein空间的一个子集上Master Bellman方程的粘性解。对于依赖时间以及控制过程与受控过程联合分布的系数,我们证明了粘性解的唯一性。我们的方法受Buckdahn、Li、Peng和Rainer[7]的启发,将[7]中的平均场偏微分方程推广到了带控制情形下的Master Bellman方程。

英文摘要:

We study an optimal control problem of generalized mean-field dynamics with open-loop controls, where the coefficients depend not only on the state processes and controls, but also on the joint law of them. The value function $V$ defined in a conventional way, but it does not satisfy the Dynamic Programming Principle (DPP for short). For this reason we introduce subtly a novel value function $\vartheta$, which is closely related to the original value function $V$, such that, a description of $\vartheta$, as a solution of a partial differential equation (PDE), also characterizes $V$. We establish the DPP for $\vartheta$. By using an intrinsic notion of viscosity solutions, initially introduced in Burzoni, Ignazio, Reppen and Soner [8] and specifically tailored to our framework, we show that the value function $\vartheta$ is a viscosity solution to a Master Bellman equation on a subset of Wasserstein space of probability measures. The uniqueness of viscosity solution is proved for coefficients which depend on the time and the joint law of the control process and the controlled process. Our approach is inspired by Buckdahn, Li, Peng and Rainer [7], and leads to a generalization of the mean-field PDE in [7] to a Master Bellman equation in the case of controls.

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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