Kfir Y. Levy
I am an Assistant Professor at the ECE Department of the Technion
My research is in Machine Learning and Optimization. I am focused on the design and analysis of efficient algorithms for a wide class of Machine Learning and decision making scenarios.
Short bio:
I did my post-doc at the Institute for Machine Learning at ETHZ working with Prof. Andreas Krause. Previously, I did my PhD at the IE&M Department of the Technion, working under the guidance of Prof. Elad Hazan. Before that, I completed my master's at the EE Department of the Technion under the guidance of Prof. Nahum Shimkin.
Office: Fishbach, 459 Contact: kfirylevy@technion.ac.il
Preprints
Publications
Learning under Delayed Feedback: Implicitly Adapting to Gradient Delays Rotem Aviv, Ido Hakimi, Assaf Schuster and Kfir Y. Levy
Learning Measuring Explainability and Trustworthiness of Power Quality
Disturbances Classifiers Using XAI - Explainable Artificial Intelligence
Ram Machlev, Michael Perl, Juri Belikov, Kfir Y. Levy and Yoash Levron
In IEEE Transactions on Industrial Informatics 2021. [pdf]
Faster Neural Network Training with Approximate Tensor Operations.
Menachem Adelman, Kfir Y. Levy, Ido Hakimi and Mark Silberstein
In NeurIPS 2021. [pdf]
LAGA: Lagged AllReduce with Gradient Accumulation for Minimal Idle Time Ido Hakimi, Rotem Aviv, Kfir Y. Levy and Assaf Schuster
In ICDM 2021. [pdf]
STORM+: Fully Adaptive SGD with Momentum for Non-convex Optimization. Kfir Y. Levy, Ali Kavis and Volkan Cevher
In NeurIPS 2021. [pdf][arXiv]
No-Regret Dynamics in the Fenchel Game: A Unified Framework
for Algorithmic Convex Optimization
Jun-Kun Wang, Jacob Abernethy and Kfir Y. Levy
Submitted. [arXiv]
Multi-Player Bandits: The Adversarial Case
Pragnya Alatur, Kfir Y. Levy and Andreas Krause.
In JMLR 2020. [arXiv]
Fast Projection onto Convex Smooth Constraints
Ilnura Usmanuva, Kfir Y. Levy, Maryam Kamgarpour and Andreas Krause.
In ICML 2021. [pdf]
Evaluating GANs via Duality
Paulina Grnarova, Kfir Y. Levy, Aurelien Lucchi, Nathanael Perraudin,
Ian Goodfellow, Thomas Hofmann and Andreas Krause.
To appear in NeurIPS 2019. [arXiv]
Projection Free Online Learning over Smooth Sets
Kfir Y. Levy and Andreas Krause.
In AISTATS 2019. [pdf]
Online Adaptive Methods, Universality and Acceleration
Kfir Y. Levy, Alp Yurtsever, and Volkan Cevher.
In NeurIPS 2018. [pdf] [arXiv]
Online Variance Reduction for Stochastic Optimization
Zalán Borsos, Andreas Krause, and Kfir Y. Levy.
In COLT 2018. [pdf] [arXiv] [Code]
Faster Rates for Convex-Concave Games
Jacob Abernethy, Kevin A. Lai, Kfir Y. Levy, and Jun-Kun Wang.
An Online Learning Approach to Generative Adversarial Networks
Paulina Grnarova, Kfir Y. Levy, Aurelien Lucchi, Thomas Hofmann, and Andreas Krause.
Online to Offline Conversions, Universality and Adaptive Minibatch Sizes
Continuous DR-submodular Maximization: Structure and Algorithms
An Bian, Kfir Y. Levy, Andreas Krause, and Joachim M. Buhmann.
k*-Nearest Neighbors: From Global to Local
Oren Anava and Kfir Y. Levy.
In NIPS 2016. [pdf] [arXiv] [Code]
On Graduated Optimization for Stochastic Non-Convex Problems
Elad Hazan, Kfir Y. Levy, and Shai Shalev-Shwartz.
In ICML 2016. [pdf] [arXiv][Code]
Beyond Convexity: Stochastic Quasi-Convex Optimization
Elad Hazan, Kfir Y. Levy, and Shai Shalev-Shwartz.
Unsupervised Imitation Learning
Sebastian Curi, Kfir Y. Levy, and Andreas Krause.
To appear in CDC 2019. [arXiv]
A Universal Algorithm for Variational Inequalities Adaptive to Smoothness and Noise
Francis Bach and Kfir Y. Levy.
In COLT 2019. [arXiv]
Online Variance Reduction with Mixtures
Zalán Borsos, Sebastian Curi, Kfir Y. Levy, and Andreas Krause.
In ICML 2019. [pdf]
UniXGrad: A Universal, Adaptive Algorithm with Optimal Guarantees for Constrained Optimization
Ali Kavis, Kfir Y. Levy, Francis Bach, and Volkan Cevher.
To appear In NeurIPS 2019. [arXiv]
Online Convex Optimization In the Random Order Model
Dan Garber, Gal Korcia and Kfir Y. Levy
In ICML 2020. [pdf]
Adaptive Sampling for Stochastic Risk-averse Learning
Sebastian Curi, Kfir Y. Levy, Stefanie Jegelka and Andreas Krause.
In NeurIPS 2020. [pdf]
Fast Rates for Exp-concave Empirical Risk Minimization
Tomer Koren and Kfir Y. Levy.
In NIPS 2015. [pdf]
Bandit Convex Optimization: Towards Tight Bounds
Elad Hazan and Kfir Y. Levy.
In NIPS 2014. [pdf] [Full Version]
Logistic Regression: Tight Bounds for Stochastic and Online Optimization
Elad Hazan, Tomer Koren and Kfir Y. Levy.
Unified Inter and Intra Options Learning Using Policy Gradient Methods
Kfir Y. Levy and Nahum Shimkin.
In EWRL 2011. [pdf]