Results 21 to 30 of about 678,745 (265)
Worst case complexity of direct search
EURO Journal on Computational Optimization, 2013 In this paper, we prove that the broad class of direct-search methods of directional type based on imposing sufficient decrease to accept new iterates shares the worst case complexity bound of steepest descent for the unconstrained minimization of a ...
L.N. Vicente
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Геофизический журнал, 2020 In geophysical inverse problems, there are two approaches to data inversion. The first is the search for a number of unknowns by minimizing the residual function.
T.N. Kyshman-Lavanova
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Retraction-Based Direct Search Methods for Derivative Free Riemannian Optimization
Journal of Optimization Theory and Applications, 2023 AbstractDirect search methods represent a robust and reliable class of algorithms for solving black-box optimization problems. In this paper, the application of those strategies is exported to Riemannian optimization, wherein minimization is to be performed with respect to variables restricted to lie on a manifold.
Kungurtsev V., Rinaldi F., Zeffiro D.
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Direct Search Methods on Reductive Homogeneous Spaces [PDF]
Journal of Optimization Theory and Applications, 2018 Direct search methods are mainly designed for use in problems with no equality constraints. However, there are many instances where the feasible set is of measure zero in the ambient space and no mesh point lies within it. There are methods for working with feasible sets that are (Riemannian) manifolds, but not all manifolds are created equal.
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Predictive Control of Ancillary Services Using Direct Search Methods [PDF]
IFAC Proceedings Volumes, 2009 Abstract The paper is focused on usage of direct search methods of an optimum in the area of predictive control. The aim of the process is to find an optimal coverage of a given predicted course of output variable by means of a set of sources. Proposed approach can be used in multi source tasks where overall output is given as the sum of outputs of ...
Chalupa, Petr +2 more
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Dynamic Equivalents in Power System Studies: A Review
Energies, 2022 In this paper, the available methods and procedures for creating equivalents for the analysis of electromagnetic transients in power systems are presented and discussed.
Paweł Sowa, Daria Zychma
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Directed search methods for surface structure determination by LEED [PDF]
Surface Science, 1990 Conventional surface crystallography by low-energy electron diffraction employs a trial-and-error search controlled at each step by a human being. This trial-and-error approach becomes very cumbersome and unreliable when it is applied to complex surfaces with a large number of unknown structural parameters.
Rous, P.J. +2 more
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Memory-Based Evolutionary Algorithms for Nonlinear and Stochastic Programming Problems
Mathematics, 2019 In this paper, we target the problems of finding a global minimum of nonlinear and stochastic programming problems. To solve this type of problem, we propose new approaches based on combining direct search methods with Evolution Strategies (ESs) and ...
Abdel-Rahman Hedar +2 more
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Google Search Trends to assess public interest in and concern about Vuity for treating presbyopia.
PLoS ONE, 2023 PurposeTo assess public awareness, interest, and concerns regarding Vuity (1.25% pilocarpine hydrochloride ophthalmic solution), an eye drop for the treatment of presbyopia, based on Google Trends.MethodsWe used Google Trends that provides a relative ...
Taku Wakabayashi +9 more
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Advantages and Disadvantages of Different Methods of Hospitals' Downsizing: A Narrative Systematic Review [PDF]
Health Promotion Perspectives, 2013 Background:Hospitals as key actors in health systems face growing pressures especially cost cutting and search for cost-effective ways to resources management. Downsizing is one of these ways.
Yalda Mousazadeh +4 more
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