Zobrazeno 1 - 10
of 667
pro vyhledávání: '"Rondepierre, A."'
Autor:
Espinos, Driss Oumbarek, Zhidkov, Alexei, Rondepierre, Alexandre, Tawada, Masafumi, Masuzawa, Mika
Particle in cell simulations are widely used in most fields of physics to investigate known and new phenomena which cannot be directly observed or measured yet. However, the computational and time resources needed for PICs make them impractical when
Externí odkaz:
http://arxiv.org/abs/2411.04703
Empirically, it has been observed that adding momentum to Stochastic Gradient Descent (SGD) accelerates the convergence of the algorithm. However, the literature has been rather pessimistic, even in the case of convex functions, about the possibility
Externí odkaz:
http://arxiv.org/abs/2410.07870
Introduced by Beck and Teboulle, FISTA (for Fast Iterative Shrinkage-Thresholding Algorithm) is a first-order method widely used in convex optimization. Adapted from Nesterov's accelerated gradient method for convex functions, the generated sequence
Externí odkaz:
http://arxiv.org/abs/2407.17063
We study the convergence of Nesterov Accelerated Gradient (NAG) minimization algorithm applied to a class of non convex functions called strongly quasar convex functions, which can exhibit highly non convex behaviour. We show that in the case of stro
Externí odkaz:
http://arxiv.org/abs/2405.19809
When considering the minimization of a quadratic or strongly convex function, it is well known that first-order methods involving an inertial term weighted by a constant-in-time parameter are particularly efficient (see Polyak [32], Nesterov [28], an
Externí odkaz:
http://arxiv.org/abs/2403.06930
Autor:
Aujol, Jean-François, Calatroni, Luca, Dossal, Charles, Labarrière, Hippolyte, Rondepierre, Aude
We consider a combined restarting and adaptive backtracking strategy for the popular Fast Iterative Shrinking-Thresholding Algorithm frequently employed for accelerating the convergence speed of large-scale structured convex optimization problems. Se
Externí odkaz:
http://arxiv.org/abs/2307.14323
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract High-power laser applications, and especially laser wakefield acceleration, continue to draw attention through various research topics, and may bring many industrial applications based on compact accelerators, from ultrafast imaging to cance
Externí odkaz:
https://doaj.org/article/93f689149d454b34bc95942d5c9925e3
Autor:
Aujol, Jean-François, Dossal, Charles, Hoàng, Văn Hào, Labarrière, Hippolyte, Rondepierre, Aude
First-order optimization algorithms can be considered as a discretization of ordinary differential equations (ODEs) \cite{su2014differential}. In this perspective, studying the properties of the corresponding trajectories may lead to convergence resu
Externí odkaz:
http://arxiv.org/abs/2206.06853
Publikováno v:
In Optics and Laser Technology January 2025 180
Autor:
Jalenques, Isabelle, Asatryan, Victoria, Tauveron-Jalenques, Urbain, Pereira, Bruno, Rondepierre, Fabien
Publikováno v:
In Journal of Psychiatric Research December 2024 180:24-32