publications

2026

  1. Working paper
    Lower Bound on Policy Gradient with Decreasing Stepsizes
    T. D. Chu, T. Kitamura, J. Mei, C. Szepesvári, and T. Lattimore
    2026
    Working paper
  2. Preprint
    Revisiting Subgradient Dominance in Robust MDPs: Counterexamples, Hardness, and Sufficient Conditions
    T. Kitamura, A. Ghosh, A. Ayoub, T. D. Chu, and C. Szepesvári
    Preprint, 2026
    arXiv HTML

2025

  1. NeurIPS
    REINFORCE Converges to Optimal Policies with Any Learning Rate
    S. M. Robertson, T. D. Chu, B. Dai, D. Schuurmans, C. Szepesvári, and J. Mei
    In Advances in Neural Information Processing Systems, 2025
    Equal contribution between S. M. Robertson and T. D. Chu
    PDF

2023

  1. IEEE/ACM
    Graph Transformer for Drug Response Prediction
    T. D. Chu, T. T. Nguyen, B. D. Hai, Q. H. Nguyen, and T. Nguyen
    IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2023
    HTML