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math.OC2021★ 4 cited
A Stochastic Newton Algorithm for Distributed Convex Optimization
Brian Bullins, Kumar Kshitij Patel, Ohad Shamir +2
We propose and analyze a stochastic Newton algorithm for homogeneous distributed stochastic convex optimization, where each machine can calculate stochastic gradients of the same p…
math.OC2021★ 5 cited
Oracle Complexity in Nonsmooth Nonconvex Optimization
Guy Kornowski, Ohad Shamir
It is well-known that given a smooth, bounded-from-below, and possibly nonconvex function, standard gradient-based methods can find -stationary points (with gradient norm less t…