Search Results for author: Xingtu Liu

Found 3 papers, 0 papers with code

Improved Rates for Differentially Private Stochastic Convex Optimization with Heavy-Tailed Data

no code implementations2 Jun 2021 Gautam Kamath, Xingtu Liu, Huanyu Zhang

Finally, we prove nearly-matching lower bounds for private stochastic convex optimization with strongly convex losses and mean estimation, showing new separations between pure and concentrated DP.

Neural Networks with Complex-Valued Weights Have No Spurious Local Minima

no code implementations31 Jan 2021 Xingtu Liu

We study the benefits of complex-valued weights for neural networks.

Complex neural networks have no spurious local minima

no code implementations1 Jan 2021 Xingtu Liu

In this work we demonstrate for the first time that a non-linear neural network can have no poor local minima under no assumptions.

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