Convergence and Sample Complexity of First-Order Methods for Agnostic Reinforcement Learning.
Nearly Optimal Sample Complexity for Learning with Label Proportions.
Benefits of Learning Rate Annealing for Tuning-Robustness in Stochastic Optimization.
From Continual Learning to SGD and Back: Better Rates for Continual Linear Models.
Complexity of Vector-valued Prediction: From Linear Models to Stochastic Convex Optimization.
A General Reduction for High-Probability Analysis with General Light-Tailed Distributions.
Fast Last-Iterate Convergence of SGD in the Smooth Interpolation Regime. (NeurIPS 2025)
Bandit Multiclass List Classification. (NeurIPS 2025)
Optimal Rates in Continual Linear Regression via Increasing Regularization. (NeurIPS 2025)
Multiplicative Reweighting for Robust Neural Network Optimization. (SIAM Journal on Imaging Sciences)
Rapid Overfitting of Multi-Pass SGD in Stochastic Convex Optimization. (ICML 2025, Spotlight)
Convergence of Policy Mirror Descent Beyond Compatible Function Approximation. (ICML 2025)
Faster Stochastic Optimization with Arbitrary Delays via Adaptive Asynchronous Mini-Batching. (ICML 2025)
Nearly Optimal Sample Complexity for Learning with Label Proportions. (ICML 2025)
Dueling Convex Optimization with General Preferences. (ICML 2025)
Locally Optimal Descent for Dynamic Stepsize Scheduling. (AISTATS 2025)
The Dimension Strikes Back with Gradients: Generalization of Gradient Methods in Stochastic Convex Optimization. (ALT 2025, Outstanding Paper Award; Oral presentation at OPT2024)
Fast Rates for Bandit PAC Multiclass Classification. (NeurIPS 2024)
Private Online Learning via Lazy Algorithms. (NeurIPS 2024)
Rate-Optimal Policy Optimization for Linear Markov Decision Processes. (ICML 2024, Oral)
How Free is Parameter-Free Stochastic Optimization? (ICML 2024, Spotlight)
The Real Price of Bandit Information in Multiclass Classification. (COLT 2024)
Faster Convergence with Multiway Preferences. (AISTATS)
Research Experience
Serves as an Associate Professor at Tel Aviv University and a Senior Research Scientist at Google Research, Tel Aviv.
Education
Received his PhD from the Technion—Israel Institute of Technology, where his advisor was Prof. Elad Hazan.
Background
Associate Professor at the Blavatnik School of Computer Science, Tel Aviv University, and a Senior Research Scientist at Google Research, Tel Aviv. His research interests are in machine learning and optimization.