# From Nesterov's Estimate Sequence to Riemannian Acceleration

24 Jan 2020  ·  , ·

We propose the first global accelerated gradient method for Riemannian manifolds. Toward establishing our result we revisit Nesterov's estimate sequence technique and develop an alternative analysis for it that may also be of independent interest... Then, we extend this analysis to the Riemannian setting, localizing the key difficulty due to non-Euclidean structure into a certain metric distortion.'' We control this distortion by developing a novel geometric inequality, which permits us to propose and analyze a Riemannian counterpart to Nesterov's accelerated gradient method. read more

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