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Direct search methods: then and now [PDF]
Journal of Computational and Applied Mathematics, 2000 The authors discuss direct search methods for unconstrained optimization. They discuss how direct search methods are characterized by the absence of the construction of a model of the objective. The article is informative and well-written. It makes a rather pleasant introduction to a very active survey area.
Robert Michael Lewis +2 more
exaly +3 more sources
Direct Differentiable Augmentation Search [PDF]
2021 IEEE/CVF International Conference on Computer Vision (ICCV), 2021 Data augmentation has been an indispensable tool to improve the performance of deep neural networks, however the augmentation can hardly transfer among different tasks and datasets.
Aoming Liu +3 more
semanticscholar +6 more sources
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
doaj +4 more sources
Optimization by Direct Search in Matrix Computations [PDF]
SIAM Journal on Matrix Analysis and Applications, 1993 Many questions about algorithms in matrix computations can be expressed in terms of the maximum value of some easily computable function \(f\). For many algorithms it is known that direct search is capable of revealing instability or proof performance.
Nicholas Higham
exaly +7 more sources
DELight: A Direct search Experiment for Light dark matter with superfluid helium [PDF]
SciPost Physics Proceedings, 2023 To reach ultra-low detection thresholds necessary to probe unprecedentedly low Dark Matter masses, target material alternatives and novel detector designs are essential.
Belina von Krosigk, Klaus Eitel, Christian Enss, Torben Ferber, Loredana Gastaldo, Felix Kahlhoefer, Sebastian Kempf, Markus Klute, Sebastian Lindemann, Marc Schumann, Francesco Toschi, Kathrin Valerius
doaj +2 more sources
Load estimation data using direct search method based on pattern search [PDF]
Data in BriefAccurately estimating load is essential for effective electric distribution planning, assets management, precise power flow predictions, accurate power losses calculations, and efficient integration of distributed energy resources.
Leonardo Ramos Pereira +1 more
doaj +2 more sources
A Direct Search Algorithm for Global Optimization
Algorithms, 2016 A direct search algorithm is proposed for minimizing an arbitrary real valued function. The algorithm uses a new function transformation and three simplex-based operations.
Enrique Baeyens +2 more
doaj +2 more sources
A modified simplex based direct search optimization algorithm for adaptive transversal FIR filters [PDF]
Science Progress, 2021 In this paper, a novel modified optimization algorithm is presented, which combines Nelder-Mead (NM) method with a gradient-based approach. The well-known Nelder Mead optimization technique is widely used but it suffers from convergence issues in higher ...
Armaghan Mohsin +3 more
doaj +2 more sources
A Merit Function Approach for Direct Search [PDF]
SIAM Journal on Optimization, 2014 In this paper it is proposed to equip direct-search methods with a general procedure to minimize an objective function, possibly nonsmooth, without using derivatives and subject to constraints on the variables. One aims at considering constraints, most likely nonlinear or nonsmooth, for which the derivatives of the corresponding functions are also ...
S. Gratton, L. N. Vicente
semanticscholar +5 more sources
Optimization by Direct Search: New Perspectives on Some Classical and Modern Methods
SIAM Review, 2003 Tamara Kolda +2 more
exaly +2 more sources