Sasha Voitovych
Contact: voitovyc@mit.edu
I am a second-year PhD student at MIT IDSS / LIDS, very fortunate to be advised by Alexander (Sasha) Rakhlin. My interests are in the foundations of interactive learning. Recently, I have been working on oracle-efficient online learning and reinforcement learning for language model post-training.
During my undergrad at the University of Toronto, I was very lucky to work with Daniel Roy, Rachid Guerraoui, and Dan Alistarh.
Links: CV, Google Scholar, LinkedIn.
Highlights
- • I was named an Amazon AI Fellow 🎓 for the 2025–2026 and 2026–2027 academic years.
- • Our paper on traceability in SCO received a Spotlight ⭐ at NeurIPS 2025.
Publications
-
On Traceability in $\ell_p$ Stochastic Convex Optimization
Conference on Neural Information Processing Systems (NeurIPS), 2025
⭐ Spotlight Presentation -
Byzantine-Robust Federated Learning: Impact of Client Subsampling and Local Updates
International Conference on Machine Learning (ICML), 2024 -
On the Inherent Anonymity of Gossiping
International Symposium on Distributed Computing (DISC), 2023 -
Near-Optimal Leader Election in Population Protocols on Graphs
ACM Symposium on Principles of Distributed Computing (PODC), 2022