My research formalizes model multiplicity to transform the existence of multiple predictive truths into a mechanism for safe, trustworthy, and interpretable AI. I develop the theoretical foundations to characterize Rashomon sets and the optimization algorithms required to navigate them for outcomes like provable recourse and personalized alignment. My work bridges the gap between machine learning theory and the practical needs of high-stakes decision-making in healthcare and policy.

Publications

Google Scholar | dblp | * denotes equal contribution
  1. 2026

    Ethan Hsu, Harry Chen, Chudi Zhong, Lesia Semenova
    Proceedings of the International Conference on Machine Learning (ICML), 2026
    spotlight
    Michal Moshkovitz*, Suraj Srinivas*, Lesia Semenova*, Nave Frost, Cyrus Rashtchian, Valentyn Boreiko, Shichang Zhang, Himabindu Lakkaraju, Cynthia Rudin, Jennifer Wortman Vaughan
    Proceedings of the International Conference on Machine Learning (ICML), 2026
    Harry Chen, Yiyang Sun, Michal Moshkovitz, Zachery Boner, Lesia Semenova, Cynthia Rudin, Ronald Parr
    Proceedings of the International Conference on Machine Learning (ICML), 2026
    An oral workshop version (Transition Noise Facilitates Interpretability) appeared at the Workshop on Interpretable Policies in Reinforcement Learning @ RLC 2024
    Shihan Feng, Cheng Zhang, Michael Xi, Ethan Hsu, Lesia Semenova, Chudi Zhong
    Transactions on Machine Learning Research (TMLR), 2026
    Yingfan Wang, German G. Gornalusse, Urja Bhatt, David A. Siegel, Alton Barbehenn, Rebecca Hoh, Jeffrey Martin, Frederick Hecht, Christopher Pilcher, Lesia Semenova, David M. Murdoch, David M. Margolis, Claire N. Levy, Keith R. Jerome, Cynthia D. Rudin, Florian Hladik, Steven G. Deeks, Sulggi A. Lee, Edward P. Browne
    JAIDS Journal of Acquired Immune Deficiency Syndromes, 2026
    Yuan Wu, Mairui Li, Lesia Semenova, Chudi Zhong
    arXiv preprint arXiv:2608.19670, 2026
    When Are Simple Models Statistically Indistinguishable From the Best Possible Models?
    Panyu Chen, Yiyang Sun, Zachery Boner, Lesia Semenova, Cynthia Rudin
    Under review, 2026
    RECLAIM: Robust Algorithmic Recourse with Actionable Missingness
    Neil Gandhi, Maria George, Harry Chen, Lesia Semenova
    Under review, 2026
  2. 2025

    Bohdan Turbal, Iryna Voitsitska, Lesia Semenova
    Advances in Neural Information Processing Systems (NeurIPS), 2025
    spotlight
    Ethan Hsu, Tony Cao, Lesia Semenova, Chudi Zhong
    Advances in Neural Information Processing Systems (NeurIPS), 2025
    Dennis Tang, Jon Donnelly, Alina Jade Barnett, Lesia Semenova, Jin Jing, Peter Hadar, Ioannis Karakis, Olga Selioutski, Kehan Zhao, M. Brandon Westover, Cynthia Rudin
    Medical Image Computing and Computer Assisted Intervention (MICCAI), 2025
    An oral workshop version (ProtoEEGNet) appeared at the Medical Imaging meets NeurIPS Workshop 2023
    Gaurav Rajesh Parikh, Jenny Huang, Albert Sun, Lesia Semenova, Cynthia Rudin
    Harvard Data Science Review, 2025
    won the 2022 American Statistical Association Data Challenge Expo Student Competition
    A workshop version appeared at the NeurIPS 2022 Workshop on Causality for Real-world Impact
    Chloe Qinyu Zhu, Muhang Tian, Lesia Semenova, Jiachang Liu, Jack Xu, Joseph Scarpa, Cynthia Rudin
    Journal of the American Medical Informatics Association (JAMIA), 2025
  3. 2024

    Zachery Boner*, Harry Chen*, Lesia Semenova*, Ronald Parr, Cynthia Rudin
    Advances in Neural Information Processing Systems (NeurIPS), 2024
    Cynthia Rudin, Chudi Zhong, Lesia Semenova, Margo Seltzer, Ronald Parr, Jiachang Liu, Srikar Katta, Jon Donnelly, Harry Chen, Zachery Boner
    Proceedings of the International Conference on Machine Learning (ICML), 2024
    spotlight
    Siong Thye Goh*, Lesia Semenova*, Cynthia Rudin
    INFORMS Journal on Data Science (IJDS), 2024
    Lesia Semenova, Yingfan Wang, Shane Falcinelli, Nancie Archin, Alicia D. Cooper-Volkheimer, David M. Margolis, Nilu Goonetilleke, David M. Murdoch, Cynthia D. Rudin, Edward P. Browne
    eLife, 2024
  4. 2023

    Lesia Semenova, Harry Chen, Ronald Parr, Cynthia Rudin
    Advances in Neural Information Processing Systems (NeurIPS), 2023
    Shane D. Falcinelli, Alicia Volkheimer, Lesia Semenova, Ethan Wu, Alexander Richardson, Manickam Ashokkumar, David M. Margolis, Nancie M. Archin, Cynthia D. Rudin, David Murdoch, Edward P. Browne
    The Journal of Infectious Diseases (JID), 2023
  5. 2022

    Lesia Semenova, Cynthia Rudin, Ronald Parr
    Proceedings of the ACM Conference on Fairness, Accountability, and Transparency (FAccT), 2022
    Cynthia Rudin, Chaofan Chen, Zhi Chen, Haiyang Huang, Lesia Semenova, Chudi Zhong
    Statistics Surveys, 2022
  6. 2021

    Alex Oesterling, Angikar Ghosal, Haoyang Yu, Rui Xin, Yasa Baig, Lesia Semenova, Cynthia Rudin
    Second Workshop on Scholarly Document Processing (SDP) at NAACL, 2021
    oral, won third place in the 3C Shared Task Competition