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arXiv · 2101.01045

Comparing different subgradient methods for solving convex optimization problems with functional constraints

Thi Lan Dinh·Ngoc Hoang Anh Mai
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Abstract

We consider the problem of minimizing a convex, nonsmooth function subject to a closed convex constraint domain. The methods that we propose are reforms of subgradient methods based on Metel--Takeda's paper [Optimization Letters 15.4 (2021): 1491-1504] and Boyd's works [Lecture notes of EE364b, Stanford University, Spring 2013-14, pp. 1-39]. While the former has complexity $\mathcal{O}(\varepsilon^{-2r})$ for all $r> 1$, the complexity of the latter is $\mathcal{O}(\varepsilon^{-2})$. We perform some comparisons between these two methods using several test examples.

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Thi Lan Dinh, Ngoc Hoang Anh Mai. 2021-01-04. Comparing different subgradient methods for solving convex optimization problems with functional constraints. https://arxiv.org/abs/2101.01045

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