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Robust Generative Adversarial Imitation Learning via Local Lipschitzness


Jun 30, 2021
Farzan Memarian, Abolfazl Hashemi, Scott Niekum, Ufuk Topcu


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Robust Training in High Dimensions via Block Coordinate Geometric Median Descent


Jun 16, 2021
Anish Acharya, Abolfazl Hashemi, Prateek Jain, Sujay Sanghavi, Inderjit S. Dhillon, Ufuk Topcu


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DP-NormFedAvg: Normalizing Client Updates for Privacy-Preserving Federated Learning


Jun 13, 2021
Rudrajit Das, Abolfazl Hashemi, Sujay Sanghavi, Inderjit S. Dhillon


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Function Approximation via Sparse Random Features


Mar 04, 2021
Abolfazl Hashemi, Hayden Schaeffer, Robert Shi, Ufuk Topcu, Giang Tran, Rachel Ward


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Physical-Layer Security via Distributed Beamforming in the Presence of Adversaries with Unknown Locations


Feb 28, 2021
Yagiz Savas, Abolfazl Hashemi, Abraham P. Vinod, Brian M. Sadler, Ufuk Topcu

* 5 pages, 3 figures 

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Improved Convergence Rates for Non-Convex Federated Learning with Compression


Dec 12, 2020
Rudrajit Das, Abolfazl Hashemi, Sujay Sanghavi, Inderjit S. Dhillon


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On the Benefits of Multiple Gossip Steps in Communication-Constrained Decentralized Optimization


Nov 20, 2020
Abolfazl Hashemi, Anish Acharya, Rudrajit Das, Haris Vikalo, Sujay Sanghavi, Inderjit Dhillon


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Identifying Low-Dimensional Structures in Markov Chains: A Nonnegative Matrix Factorization Approach


Sep 27, 2019
Mahsa Ghasemi, Abolfazl Hashemi, Haris Vikalo, Ufuk Topcu


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Stochastic-Greedy++: Closing the Optimality Gap in Exact Weak Submodular Maximization


Jul 22, 2019
Gustavo de Veciana, Abolfazl Hashemi, Haris Vikalo


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Evolutionary Self-Expressive Models for Subspace Clustering


Oct 29, 2018
Abolfazl Hashemi, Haris Vikalo

* IEEE Journal of Selected Topics in Signal Processing, Special Issue on Data Science: Robust Subspace Learning and Tracking, vol. 12, no. 6, December 2018 

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Sampling Requirements and Accelerated Schemes for Sparse Linear Regression with Orthogonal Least-Squares


Apr 13, 2018
Abolfazl Hashemi, Haris Vikalo


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Sampling and Reconstruction of Graph Signals via Weak Submodularity and Semidefinite Relaxation


Oct 31, 2017
Abolfazl Hashemi, Rasoul Shafipour, Haris Vikalo, Gonzalo Mateos


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Accelerated Sparse Subspace Clustering


Oct 31, 2017
Abolfazl Hashemi, Haris Vikalo


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Sparse recovery via Orthogonal Least-Squares under presence of Noise


Aug 08, 2016
Abolfazl Hashemi, Haris Vikalo


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Sparse Linear Regression via Generalized Orthogonal Least-Squares


Jul 28, 2016
Abolfazl Hashemi, Haris Vikalo


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