Search Results for author: Zhaonan Qu

Found 6 papers, 2 papers with code

Inferring Dynamic Networks from Marginals with Iterative Proportional Fitting

1 code implementation28 Feb 2024 Serina Chang, Frederic Koehler, Zhaonan Qu, Jure Leskovec, Johan Ugander

A common network inference problem, arising from real-world data constraints, is how to infer a dynamic network from its time-aggregated adjacency matrix and time-varying marginals (i. e., row and column sums).

On Sinkhorn's Algorithm and Choice Modeling

no code implementations30 Sep 2023 Zhaonan Qu, Alfred Galichon, Johan Ugander

For a broad class of choice and ranking models based on Luce's choice axiom, including the Bradley--Terry--Luce and Plackett--Luce models, we show that the associated maximum likelihood estimation problems are equivalent to a classic matrix balancing problem with target row and column sums.

Optimal Diagonal Preconditioning

1 code implementation2 Sep 2022 Zhaonan Qu, Wenzhi Gao, Oliver Hinder, Yinyu Ye, Zhengyuan Zhou

Moreover, our implementation of customized solvers, combined with a random row/column sampling step, can find near-optimal diagonal preconditioners for matrices up to size 200, 000 in reasonable time, demonstrating their practical appeal.

A Unified Linear Speedup Analysis of Federated Averaging and Nesterov FedAvg

no code implementations11 Jul 2020 Zhaonan Qu, Kaixiang Lin, Zhaojian Li, Jiayu Zhou, Zhengyuan Zhou

For strongly convex and convex problems, we also characterize the corresponding convergence rates for the Nesterov accelerated FedAvg algorithm, which are the first linear speedup guarantees for momentum variants of FedAvg in convex settings.

Distributed Optimization Federated Learning

Interpretable Personalization via Policy Learning with Linear Decision Boundaries

no code implementations17 Mar 2020 Zhaonan Qu, Isabella Qian, Zhengyuan Zhou

Our findings suggest that our proposed policy learning framework using tools from causal inference and Bayesian optimization provides a promising practical approach to interpretable personalization across a wide range of applications.

Bayesian Optimization BIG-bench Machine Learning +2

Ensemble Methods for Causal Effects in Panel Data Settings

no code implementations24 Mar 2019 Susan Athey, Mohsen Bayati, Guido Imbens, Zhaonan Qu

This paper studies a panel data setting where the goal is to estimate causal effects of an intervention by predicting the counterfactual values of outcomes for treated units, had they not received the treatment.

counterfactual Matrix Completion +1

Cannot find the paper you are looking for? You can Submit a new open access paper.