Results 21 to 30 of about 2,178 (210)

An Analytical Method to Determine the Optimal Switching of Modular Multilevel Converter in HVDC System

open access: yesIEEE Access, 2021
The lifetime of the submodules (SMs) in a modular multilevel converter (MMC) is significantly impacted by its switching frequency. In this work, the determination of the switching frequency, to be applied to the nearest level modulation (NLM) method used
Yonghui Li   +3 more
doaj   +1 more source

Distributed subgradient methods and quantization effects [PDF]

open access: yes2008 47th IEEE Conference on Decision and Control, 2008
We consider a convex unconstrained optimization problem that arises in a network of agents whose goal is to cooperatively optimize the sum of the individual agent objective functions through local computations and communications. For this problem, we use averaging algorithms to develop distributed subgradient methods that can operate over a time ...
Angelia Nedic   +3 more
openaire   +2 more sources

Modified Mann-Type Subgradient Extragradient Rules for Variational Inequalities and Common Fixed Points Implicating Countably Many Nonexpansive Operators

open access: yesMathematics, 2022
In a real Hilbert space, let the CFPP, VIP, and HFPP denote the common fixed-point problem of countable nonexpansive operators and asymptotically nonexpansive operator, variational inequality problem, and hierarchical fixed point problem, respectively ...
Yun-Ling Cui   +6 more
doaj   +1 more source

Incremental Subgradient Methods for Nondifferentiable Optimization [PDF]

open access: yesSIAM Journal on Optimization, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Angelia Nedic, Dimitri P. Bertsekas
openaire   +1 more source

A delayed subgradient method for nonsmooth convex-concave min–max optimization problems

open access: yesResults in Control and Optimization, 2023
In this paper, we aim to solve a convex-concave min–max optimization problem, where the convex-concave coupling function is nonsmooth in both variables.
Tipsuda Arunrat, Nimit Nimana
doaj   +1 more source

Radial Subgradient Method [PDF]

open access: yesSIAM Journal on Optimization, 2018
We present a subgradient method for minimizing non-smooth, non-Lipschitz convex optimization problems. The only structure assumed is that a strictly feasible point is known. We extend the work of Renegar [5] by taking a different perspective, leading to an algorithm which is conceptually more natural, has notably improved convergence rates, and for ...
openaire   +3 more sources

Distributed Asymptotic Minimization of Sequences of Convex Functions by a Broadcast Adaptive Subgradient Method [PDF]

open access: yes, 2011
We propose a non-hierarchical decentralized algorithm for the asymptotic minimization of possibly time-varying convex functions. In our method, each agent in a network has a private, local (possibly time-varying) cost function, and the objective is to ...
Renato L. G. Cavalcante   +11 more
core   +1 more source

A subgradient method with non-monotone line search

open access: yes, 2023
In this paper we present a subgradient method with non-monotone line search for the minimization of convex functions with simple convex constraints. Different from the standard subgradient method with prefixed step sizes, the new method selects the step ...
Nunes Grapiglia, Geovani   +3 more
core   +2 more sources

Scaling Techniques for $\epsilon$-Subgradient Methods [PDF]

open access: yesSIAM Journal on Optimization, 2016
Summary: The recent literature on first order methods for smooth optimization shows that significant improvements on the practical convergence behavior can be achieved with variable step size and scaling for the gradient, making this class of algorithms attractive for a variety of relevant applications.
BONETTINI, Silvia   +2 more
openaire   +2 more sources

Modified Inertial-Type Subgradient Extragradient Methods for Variational Inequalities and Fixed Points of Finite Bregman Relatively Nonexpansive and Demicontractive Mappings

open access: yesAxioms, 2023
In this paper, we design two inertial-type subgradient extragradient algorithms with the linear-search process for resolving the two pseudomonotone variational inequality problems (VIPs) of and the common fixed point problem (CFPP) of finite Bregman ...
Cong-Shan Wang   +5 more
doaj   +1 more source

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