Dimension independent data sets approximation and applications to classification - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Advanced Modeling and Simulation in Engineering Sciences Année : 2024

Dimension independent data sets approximation and applications to classification

Résumé

We revisit the classical kernel method of approximation/interpolation theory in a very specific context from the particular point of view of partial differential equations. The goal is to highlight the role of regularization by casting it in terms of actual smoothness of the interpolant obtained by the procedure. The latter will be merely continuous on the data set but smooth otherwise. While the method obtained fits into the category of RKHS methods and hence shares their main features, it explicitly uses smoothness, via a dimension dependent (pseudo-)differential operator, to obtain a flexible and robust interpolant, which can adapt to the shape of the data while quickly transitioning away from it and maintaining continuous dependence on them. The latter means that a perturbation or pollution of the data set, small in size, leads to comparable results in classification applications. The method is applied to both low dimensional examples and a standard high dimensioal benchmark problem (MNIST digit classification).
Fichier principal
Vignette du fichier
s40323-023-00256-w.pdf (2.32 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04458279 , version 1 (23-02-2024)

Identifiants

Citer

Patrick Guidotti. Dimension independent data sets approximation and applications to classification. Advanced Modeling and Simulation in Engineering Sciences, 2024, Recent advances in Fourier-based computational approaches for PDEs, 11 (1), pp.1-20. ⟨10.1186/s40323-023-00256-w⟩. ⟨hal-04458279⟩

Collections

AMSES
16 Consultations
4 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More