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Publications

Affichage des publications 101 à 110 sur 315 au total

Optimisation et contrôle

Improving NMF clustering by leveraging contextual relationships among words

Non-negative Matrix Factorization (NMF) and its variants have been successfully used for clustering text documents. However, NMF approaches like other models do not explicitly account for the contextual dependencies between words. To remedy this…

Mickael Febrissy, Aghiles Salah, Melissa Ailem, Mohamed Nadif

Neurocomputing -

Traitement du signal et de l'image

An Uncertainty Principle for Lowband Graph Signals

In this article, we introduce a novel lower bound on the support size of lowband graph signals. This result allows the deduction of an optimality criterion for the lowband and sparse decomposition of any graph signal, establishing the uniqueness of…

Antoine Mazarguil, Laurent Oudre, Nicolas Vayatis

IEEE Signal Processing Letters -

Machine Learning

Self-supervision versus synthetic datasets: which is the lesser evil in the context of video denoising?

L'entraînement supervisé a conduit à l'état de l'art en débruitage d'images et de vidéos. Cependant, son application aux données réelles est limitée car il nécessite de grandes bases de données formées de paires donnée bruitée / donnée vérité…

Valéry Dewil, Arnaud Barral, Gabriele Facciolo, Pablo Arias

The 1st Workshop on Vision Datasets Understanding (CVPR 2022) -

Ingénierie biomédicale

Assessing Smoothness of Arm Movements With Jerk: A Comparison of Laterality, Contraction Mode and Plane of Elevation. A Pilot Study

Measuring the quality of movement is a need and a challenge for clinicians. Jerk, defined as the quantity of acceleration variation, is a kinematic parameter used to assess the smoothness of movement. We aimed to assess and compare jerk metrics in…

Alexandra Roren, Antoine Mazarguil, Diego Vaquero-Ramos, Jean-Baptiste Deloose, Pierre-Paul Vidal, Christelle Nguyen, François Rannou, Danping Wang, Laurent Oudre, Marie-Martine Lefèvre-Colau

Frontiers in Bioengineering and Biotechnology -

Neurobiologie

Function of the Retinal Pigment Epithelium in Patients With Neurofibromatosis Type 1

PURPOSE. Retinal and choroidal abnormalities in neurofibromatosis type 1 (NF1) remain poorly studied. It has been reported, however, that the function of the retinal pigment epithelium (RPE) in NF1 was abnormal, with a supra-normal Arden ratio of…

Romain Touzé, Marc Abitbol, Dominique Bremond-Gignac, Matthieu Robert

Investigative Ophthalmology & Visual Science -

Mathématiques

Single pass eikonal solver in tilted transversely anisotropic media

We present a numerical scheme to solve the eikonal equation in a Tilted Transversely Isotropic (TTI) medium. The solution to this equation corresponds to the first arrival time of seismic pressure waves in the high frequency asymptotic regime, whose…

François Desquilbet, Jean-Marie Mirebeau, Ludovic Métivier