Results 31 to 40 of about 66,063 (262)
Calibrating the GAMIL3-1° climate model using a derivative-free optimization method [PDF]
Geoscientific Model DevelopmentParameterization in climate models often involves parameters that are poorly constrained by observations or theoretical understanding alone. Manual tuning by experts can be time-consuming, subjective, and prone to underestimating uncertainties. Automated
W. Liang +10 more
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RF cavity design exploiting a new derivative-free trust region optimization approach
Journal of Advanced Research, 2015 In this article, a novel derivative-free (DF) surrogate-based trust region optimization approach is proposed. In the proposed approach, quadratic surrogate models are constructed and successively updated.
Abdel-Karim S.O. Hassan +4 more
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Curvature-Aware Derivative-Free Optimization
Journal of Scientific ComputingThe paper discusses derivative-free optimization (DFO), which involves minimizing a function without access to gradients or directional derivatives, only function evaluations. Classical DFO methods, which mimic gradient-based methods, such as Nelder-Mead and direct search have limited scalability for high-dimensional problems. Zeroth-order methods have
Bumsu Kim +3 more
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Derivative-free nonlinear optimization filter simplex [PDF]
International Journal of Applied Mathematics and Computer Science, 2010 Derivative-free nonlinear optimization filter simplexThe filter method is a technique for solving nonlinear programming problems. The filter algorithm has two phases in each iteration. The first one reduces a measure of infeasibility, while in the second the objective function value is reduced.
Aldina Correia +3 more
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The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli +3 more
wiley +1 more source
Free-form optimization of shell structures for maximizing elastic buckling load
Nihon Kikai Gakkai ronbunshu, 2014 This paper presents a free-form optimization method for maximizing the elastic buckling load of a shell structure. A shell structure is assumed to be movable in the normal or the tangent direction to the surface for the shape optimization.
Masatoshi SHIMODA, Tomoki OKADA
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
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Nihon Kikai Gakkai ronbunshu, 2014 This paper describes a parameter-free free-form optimization method for reducing the radiated noise from vibrating shell structures in an open space. Squared sound pressure, which is evaluated by solving fully coupled shell-acoustic interaction system ...
Kensuke SHIMOIDE, Masatoshi SHIMODA
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A Hybrid Stochastic Deterministic Algorithm for Solving Unconstrained Optimization Problems
Mathematics, 2022 In this paper, a new deterministic method is proposed. This method depends on presenting (suggesting) some modifications to existing parameters of some conjugate gradient methods.
Ahmad M. Alshamrani +4 more
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Constrained derivative-free optimization on thin domains [PDF]
Journal of Global Optimization, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
José Mario Martínez, F. N. C. Sobral
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