Search Results for author: Zhen Dai

Found 4 papers, 0 papers with code

Fair Representation Clustering with Several Protected Classes

no code implementations3 Feb 2022 Zhen Dai, Yury Makarychev, Ali Vakilian

For this special case, we present an $O(\log k)$-approximation algorithm that runs in $(kf)^{O(\ell)}\log n + poly(n)$ time.

Clustering Fairness

Representation Costs of Linear Neural Networks: Analysis and Design

no code implementations NeurIPS 2021 Zhen Dai, Mina Karzand, Nathan Srebro

For different parameterizations (mappings from parameters to predictors), we study the regularization cost in predictor space induced by $l_2$ regularization on the parameters (weights).

Line Outage Identification Based on AC Power Flow and Synchronized Measurements

no code implementations18 Nov 2020 Zhen Dai, Joseph Euzebe Tate

This paper proposes a method of identifying single line outages in power systems based on phasor measurement unit (PMU) measurements and ac power flow models.

Is Local SGD Better than Minibatch SGD?

no code implementations ICML 2020 Blake Woodworth, Kumar Kshitij Patel, Sebastian U. Stich, Zhen Dai, Brian Bullins, H. Brendan McMahan, Ohad Shamir, Nathan Srebro

We study local SGD (also known as parallel SGD and federated averaging), a natural and frequently used stochastic distributed optimization method.

Distributed Optimization

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