Learning Linear-Quadratic Regulators Efficiently with only $\sqrt{T}$ Regret

17 Feb 2019  ·  Alon Cohen, Tomer Koren, Yishay Mansour ·

We present the first computationally-efficient algorithm with $\widetilde O(\sqrt{T})$ regret for learning in Linear Quadratic Control systems with unknown dynamics. By that, we resolve an open question of Abbasi-Yadkori and Szepesv\'ari (2011) and Dean, Mania, Matni, Recht, and Tu (2018).

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