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The Frank-Wolfe algorithm is a popular method in structurally constrained machine learning applications, due to its fast per-iteration complexity. However, one major limitation of the method is a slow rate of convergence that is difficult…

最优化与控制 · 数学 2023-04-14 Zhaoyue Chen , Yifan Sun

We provide a template to derive convergence rates for the following popular versions of the Frank-Wolfe algorithm on polytopes: vanilla Frank-Wolfe, Frank-Wolfe with away steps, Frank-Wolfe with blended pairwise steps, and Frank-Wolfe with…

最优化与控制 · 数学 2025-05-21 Elias Wirth , Javier Pena , Sebastian Pokutta

Frank-Wolfe methods are projection-free algorithms for constrained optimization whose practical performance often depends critically on the choice of step size. Classical closed-loop step-size rules typically require prior knowledge of a…

最优化与控制 · 数学 2026-05-29 Khanh-Hung Giang-Tran , Soroosh Shafiee , Nam Ho-Nguyen

This paper studies the empirical efficacy and benefits of using projection-free first-order methods in the form of Conditional Gradients, a.k.a. Frank-Wolfe methods, for training Neural Networks with constrained parameters. We draw…

机器学习 · 计算机科学 2020-10-22 Sebastian Pokutta , Christoph Spiegel , Max Zimmer

We address the problem of minimizing a convex smooth function $f(x)$ over a compact polyhedral set $D$ given a stochastic zeroth-order constraint feedback model. This problem arises in safety-critical machine learning applications, such as…

最优化与控制 · 数学 2019-12-10 Ilnura Usmanova , Andreas Krause , Maryam Kamgarpour

In this paper, we consider approximate Frank-Wolfe (FW) algorithms to solve convex optimization problems over graph-structured support sets where the linear minimization oracle (LMO) cannot be efficiently obtained in general. We first…

最优化与控制 · 数学 2022-06-20 Baojian Zhou , Yifan Sun

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 are based on the Frank-Wolfe method, which replaces…

机器学习 · 计算机科学 2020-02-17 Elad Hazan , Edgar Minasyan

This paper considers stochastic convex optimization problems with two sets of constraints: (a) deterministic constraints on the domain of the optimization variable, which are difficult to project onto; and (b) deterministic or stochastic…

最优化与控制 · 数学 2022-05-25 Zeeshan Akhtar , Ketan Rajawat

The Frank-Wolfe (FW) optimization algorithm has lately re-gained popularity thanks in particular to its ability to nicely handle the structured constraints appearing in machine learning applications. However, its convergence rate is known…

最优化与控制 · 数学 2015-11-19 Simon Lacoste-Julien , Martin Jaggi

The stochastic Frank-Wolfe method has recently attracted much general interest in the context of optimization for statistical and machine learning due to its ability to work with a more general feasible region. However, there has been a…

最优化与控制 · 数学 2019-11-06 Haihao Lu , Robert M. Freund

In this paper, we show that the Away-step Stochastic Frank-Wolfe Algorithm (ASFW) and Pairwise Stochastic Frank-Wolfe algorithm (PSFW) converge linearly in expectation. We also show that if an algorithm convergences linearly in expectation…

最优化与控制 · 数学 2017-03-22 Donald Goldfarb , Garud Iyengar , Chaoxu Zhou

Minimizing a function over an intersection of convex sets is an important task in optimization that is often much more challenging than minimizing it over each individual constraint set. While traditional methods such as Frank-Wolfe (FW) or…

最优化与控制 · 数学 2018-04-11 Gauthier Gidel , Fabian Pedregosa , Simon Lacoste-Julien

Frank-Wolfe algorithms (FW) are popular first-order methods for solving constrained convex optimization problems that rely on a linear minimization oracle instead of potentially expensive projection-like oracles. Many works have identified…

最优化与控制 · 数学 2023-09-18 Elias Wirth , Thomas Kerdreux , Sebastian Pokutta

We develop a Frank-Wolfe algorithm with corrective steps, generalizing previous algorithms including blended conditional gradients, blended pairwise conditional gradients, and fully-corrective Frank-Wolfe. For this, we prove tight…

Differentiable optimization has received a significant amount of attention due to its foundational role in the domain of machine learning based on neural networks. This paper proposes a differentiable layer, named Differentiable Frank-Wolfe…

机器学习 · 计算机科学 2024-04-01 Zixuan Liu , Liu Liu , Xueqian Wang , Peilin Zhao

In this paper we provide an introduction to the Frank-Wolfe algorithm, a method for smooth convex optimization in the presence of (relatively) complicated constraints. We will present the algorithm, introduce key concepts, and establish…

最优化与控制 · 数学 2023-11-30 Sebastian Pokutta

The complexity in large-scale optimization can lie in both handling the objective function and handling the constraint set. In this respect, stochastic Frank-Wolfe algorithms occupy a unique position as they alleviate both computational…

最优化与控制 · 数学 2021-02-16 Cyrille W. Combettes , Christoph Spiegel , Sebastian Pokutta

A broad class of convex optimization problems can be formulated as a semidefinite program (SDP), minimization of a convex function over the positive-semidefinite cone subject to some affine constraints. The majority of classical SDP solvers…

最优化与控制 · 数学 2019-10-30 Francesco Locatello , Alp Yurtsever , Olivier Fercoq , Volkan Cevher

This paper analyzes the convergence rates of the {\it Frank-Wolfe } method for solving convex constrained multiobjective optimization. We establish improved convergence rates under different assumptions on the objective function, the…

最优化与控制 · 数学 2024-06-11 Douglas S. Gonçalves , Max L. N. Gonçalves , Jefferson G. Melo

Federated learning (FL) has gained a lot of attention in recent years for building privacy-preserving collaborative learning systems. However, FL algorithms for constrained machine learning problems are still limited, particularly when the…

机器学习 · 计算机科学 2024-08-20 Ali Dadras , Sourasekhar Banerjee , Karthik Prakhya , Alp Yurtsever