Harnessing structures in big data via guaranteed low-rank matrix estimation: Recent theory and fast algorithms via convex and nonconvex optimization

Y Chen, Y Chi - IEEE Signal Processing Magazine, 2018 - ieeexplore.ieee.org
Low-rank modeling plays a pivotal role in signal processing and machine learning, with
applications ranging from collaborative filtering, video surveillance, and medical imaging to …

Chain of lora: Efficient fine-tuning of language models via residual learning

W **a, C Qin, E Hazan - arxiv preprint arxiv:2401.04151, 2024 - arxiv.org
Fine-tuning is the primary methodology for tailoring pre-trained large language models to
specific tasks. As the model's scale and the diversity of tasks expand, parameter-efficient fine …

Introduction to online convex optimization

E Hazan - Foundations and Trends® in Optimization, 2016 - nowpublishers.com
This monograph portrays optimization as a process. In many practical applications the
environment is so complex that it is infeasible to lay out a comprehensive theoretical model …

Breaking the linear iteration cost barrier for some well-known conditional gradient methods using maxip data-structures

Z Xu, Z Song, A Shrivastava - Advances in Neural …, 2021 - proceedings.neurips.cc
Conditional gradient methods (CGM) are widely used in modern machine learning. CGM's
overall running time usually consists of two parts: the number of iterations and the cost of …

Faster projection-free online learning

E Hazan, E Minasyan - Conference on Learning Theory, 2020 - proceedings.mlr.press
In many online learning problems the computational bottleneck for gradient-based methods
is the projection operation. For this reason, in many problems the most efficient algorithms …

Projection-free optimization on uniformly convex sets

T Kerdreux, A d'Aspremont… - … conference on artificial …, 2021 - proceedings.mlr.press
Abstract The Frank-Wolfe method solves smooth constrained convex optimization problems
at a generic sublinear rate of $\mathcal {O}(1/T) $, and it (or its variants) enjoys accelerated …

Fast projection onto convex smooth constraints

I Usmanova, M Kamgarpour… - … on Machine Learning, 2021 - proceedings.mlr.press
The Euclidean projection onto a convex set is an important problem that arises in numerous
constrained optimization tasks. Unfortunately, in many cases, computing projections is …

Iterative hard thresholding with adaptive regularization: Sparser solutions without sacrificing runtime

K Axiotis, M Sviridenko - International Conference on …, 2022 - proceedings.mlr.press
We propose a simple modification to the iterative hard thresholding (IHT) algorithm, which
recovers asymptotically sparser solutions as a function of the condition number. When …

Minimally distorted structured adversarial attacks

E Kazemi, T Kerdreux, L Wang - International Journal of Computer Vision, 2023 - Springer
White box adversarial perturbations are generated via iterative optimization algorithms most
often by minimizing an adversarial loss on a ℓ p neighborhood of the original image, the so …

Improved regret bounds for projection-free bandit convex optimization

D Garber, B Kretzu - International Conference on Artificial …, 2020 - proceedings.mlr.press
We revisit the challenge of designing online algorithms for the bandit convex optimization
problem (BCO) which are also scalable to high dimensional problems. Hence, we consider …