Global Convergence of Policy Gradient Algorithms for Indefinite Least Squares Stationary Optimal Control

preprint2020arXivOpen access

Abstract

We consider policy gradient algorithms for the indefinite least squares stationary optimal control, e.g., linear-quadratic-regulator (LQR) with indefinite state and input penalization matrices. Such a setup has important applications in control design with conflicting objectives, such as linear quadratic dynamic games. We show the global convergence of gradient, natural gradient and quasi-Newton policies for this class of indefinite least squares problems.

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