Results 21 to 30 of about 884 (184)

Relaxation Subgradient Algorithms with Machine Learning Procedures

open access: yesMathematics, 2022
In the modern digital economy, optimal decision support systems, as well as machine learning systems, are becoming an integral part of production processes.
Vladimir Krutikov   +4 more
doaj   +1 more source

On Mann implicit composite subgradient extragradient methods for general systems of variational inequalities with hierarchical variational inequality constraints

open access: yesJournal of Inequalities and Applications, 2022
In a real Hilbert space, let the VIP, GSVI, HVI, and CFPP denote a variational inequality problem, a general system of variational inequalities, a hierarchical variational inequality, and a common fixed-point problem of a countable family of uniformly ...
Lu-Chuan Ceng   +2 more
doaj   +1 more source

Clarke Subgradients of Stratifiable Functions [PDF]

open access: yesSIAM Journal on Optimization, 2007
We establish the following result: if the graph of a (nonsmooth) real-extended-valued function $f:\mathbb{R}^{n}\to \mathbb{R}\cup\{+\infty\}$ is closed and admits a Whitney stratification, then the norm of the gradient of $f$ at $x\in{dom}f$ relative to the stratum containing $x$ bounds from below all norms of Clarke subgradients of $f$ at $x$.
Jérôme Bolte   +3 more
openaire   +3 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

An introduction to non-smooth convex analysis via multiplicative derivative

open access: yesJournal of Taibah University for Science, 2019
In this study, *-directional derivative and *-subgradient are defined using the multiplicative derivative, making a new contribution to non-Newtonian calculus for use in non-smooth analysis.
Ali Hakan Tor
doaj   +1 more source

On interval-subgradient and no-good cuts [PDF]

open access: yesOperations Research Letters, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Claudia D'Ambrosio   +3 more
openaire   +4 more sources

On \(\beta\)-differentiability of norms

open access: yesJournal of Numerical Analysis and Approximation Theory, 2004
In this note we give some characterizations for the differentiability with respect to a bornology of a continuous convex function. The special case of seminorms is treated.
Valeriu Anisiu
doaj   +2 more sources

A Refined Inertial-like Subgradient Method for Split Equality Problems

open access: yesAppliedMath
This paper presents the convergence analysis of a newly proposed algorithm for approximating solutions to split equality variational inequality and fixed point problems in real Hilbert spaces.
Khushdil Ahmad   +2 more
doaj   +1 more source

A Quantised Push‐Sum Distributed Adaptive Momentum Algorithm for Optimisation Over Directed Networks

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT In this paper, we investigate a distributed constrained optimisation problem over directed networks. The agents in the networks conduct local computations and communications, endeavouring to collaboratively minimise the aggregation of all locally known convex cost functions subject to a global constraint set.
Qingguo Lü   +6 more
wiley   +1 more source

Fixed point quasiconvex subgradient method [PDF]

open access: yesEuropean Journal of Operational Research, 2020
Constrained quasiconvex optimization problems appear in many fields, such as economics, engineering, and management science. In particular, fractional programming, which models ratio indicators such as the profit/cost ratio as fractional objective functions, is an important instance.
Kazuhiro Hishinuma, Hideaki Iiduka
openaire   +2 more sources

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