Search Results for author: Luis Espath

Found 4 papers, 1 papers with code

Physics-informed Spectral Learning: the Discrete Helmholtz--Hodge Decomposition

no code implementations21 Feb 2023 Luis Espath, Pouria Behnoudfar, Raul Tempone

In this work, we further develop the Physics-informed Spectral Learning (PiSL) by Espath et al. \cite{Esp21} based on a discrete $L^2$ projection to solve the discrete Hodge--Helmholtz decomposition from sparse data.

Deep nurbs -- admissible neural networks

no code implementations25 Oct 2022 Hamed Saidaoui, Luis Espath, Rául Tempone

In this study, we propose a new numerical scheme for physics-informed neural networks (PINNs) that enables precise and inexpensive solution for partial differential equations (PDEs) in case of arbitrary geometries while strictly enforcing Dirichlet boundary conditions.

On the equivalence of different adaptive batch size selection strategies for stochastic gradient descent methods

no code implementations22 Sep 2021 Luis Espath, Sebastian Krumscheid, Raúl Tempone, Pedro Vilanova

In this study, we demonstrate that the norm test and inner product/orthogonality test presented in \cite{Bol18} are equivalent in terms of the convergence rates associated with Stochastic Gradient Descent (SGD) methods if $\epsilon^2=\theta^2+\nu^2$ with specific choices of $\theta$ and $\nu$.

Stochastic Optimization

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