Arnesh M. Sujanani

University of Waterloo. Department of Combinatorics and Optimization. Faculty of Mathematics.

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Office: MC 5461

200 University Avenue West

Waterloo, Ontario

I am a postdoctoral fellow at University of Waterloo’s Department of Combinatorics and Optimization where I am advised by Henry Wolkowicz (24-26), Saeed Ghadimi (24-26), Walaa Moursi (24-26), and Stephen Vavasis (24-25). I am interested broadly in optimization for machine learning, continuous optimization, semidefinite programming, scientific computing, and numerical linear algebra. The main focus of my research is to develop scalable, fast, and parameter-free first order-methods for large-scale optimization problems, particularly those arising in machine learning and data science.

Previously, I received my PhD in Operations Research in Summer 2024 from Georgia Tech ISyE where I was advised by Renato D.C. Monteiro. I also received my M.S. in Mathematics in Spring 2024 from Georgia Tech and a B.S. in Applied and Computational Mathematics in Spring 2019 from University of Southern California.

news

Apr 29, 2026 The paper ``A low-rank augmented Lagrangian method for large-scale semidefinite programming based on a hybrid convex-nonconvex approach’’ has been published online in Mathematical Programming.
Oct 14, 2025 The paper ``cuHALLaR: A GPU Accelerated Low-Rank Augmented Lagrangian Method for Large-Scale Semidefinite Programming’’ has been submitted to Mathematical Programming Computation.
Sep 14, 2025 The paper ``Asymptotically Fair and Truthful Allocation of Public Goods’’ has been accepted to Journal of Artificial Intelligence Research.
Jun 09, 2025 The paper ``Efficient Parameter-Free Restarted Accelerated Gradient Methods for Convex and Strongly Convex Optimization’’ has been published online in Journal of Optimization Theory and Applications.
layout: post date: 2025-09-14 07:59:00-0400 inline: true related_posts: false — The paper ``Asymptotically Fair and Truthful Allocation of Public Goods’’ has been accepted to Journal of Artificial Intelligence Research.

selected publications

  1. preconditioning.jpg
    Optimal Diagonal Preconditioning Beyond Worst-Case Conditioning: Theory and Practice of Omega Scaling
    S. Ghadimi, W. Jung, A. Sujanani, D. Torregrosa-Belén, and H. Wolkowicz (alphabetical order)
    Available on arXiv, 2026
  2. restart.jpg
    Efficient Parameter-Free Restarted Accelerated Gradient Methods for Convex and Strongly Convex Optimization
    A. Sujanani, and R.D.C. Monteiro
    Journal of Optimization Theory and Applications, 2025
  3. parallel.jpg
    cuHALLaR: A GPU Accelerated Low-Rank Augmented Lagrangian Method for Large-Scale Semidefinite Programming
    J. Aguirre, D. Cifuentes, V. Guigues, R.D.C. Monteiro, V.H. Nascimento, and A. Sujanani (alphabetical order)
    Available on arXiv:2404.15996. Submitted to Mathematical Programming Computation, 2025
  4. burermonteiro.jpg
    A low-rank augmented Lagrangian method for large-scale semidefinite programming based on a hybrid convex-nonconvex approach
    R.D.C. Monteiro, A. Sujanani, and D. Cifuentes
    Available on arXiv:2401.12490. Major Revision in Mathematical Programming, 2024