Publications de Ehouarn SIMON
Antoine Bernigaud, Serge Gratton, Ehouarn Simon
A non-linear conjugate gradient in dual space for Lp-norm regularized non-linear least squares with application in data assimilation
Numerical Algorithms, 2023, ⟨10.1007/s11075-023-01578-x⟩
Jean Marc Tregan, Jean Luc Amestoy, Mégane Bati, Jean-Jacques Bézian, Stéphane Blanco, Laurent Brunel, Cyril Caliot, Julien Charon, Jean-Francois Cornet, Christophe Coustet, Louis D’alençon, Jeremi Dauchet, Sebastien Dutour, Simon Eibner, Mouna El-Hafi, Vincent Eymet, Olivier Farges, Vincent Forest, Richard Fournier, Loris Ibarrart, Mathieu Galtier, Victor Gattepaille, Jacques Gautrais, Pascal Lavieille, Zili HE, Frédéric Hourdin, Jean-Louis Joly, Paule Lapeyre, Marie-Helene Lecureux, Jacques Lluc, Marc Miscevic, Nada Mourtaday, Yaniss Nyffenegger-Péré, Lionel Pelissier, Lea Penazzi, Benjamin Piaud, Clément Rodrigues-Viguier, Gisele Roques, Maxime Roger, Thomas Saez, Guillaume Terrée, Najda Villefranque, Thomas Vourc’h, Daniel Yaacoub
Coupling radiative, conductive and convective heat-transfers in a single Monte Carlo algorithm: A general theoretical framework for linear situations
PLoS ONE, 2023, 18 (4), ⟨10.1371/journal.pone.0283681⟩
Serge Gratton, Ehouarn Simon, David Titley-Peloquin
Covariance matrix estimation for ensemble-based Kalman filters with multiple ensembles
Mathematical Geosciences, In press, ⟨10.1007/s11004-023-10063-z⟩
Vinicius Alves de Oliveira, Marie Chabert, Thomas Oberlin, Charly Poulliat, Mickael Bruno, Christophe Latry, Mikael Carlavan, Simon Henrot, Falzon Frédéric, Roberto Camarero
Satellite Image Compression and Denoising With Neural Networks
IEEE Geoscience and Remote Sensing Letters, 2022, 19, pp.1-5. ⟨10.1109/LGRS.2022.3145992⟩
Serge Gratton, Ehouarn Simon, David Titley-Peloquin, Philippe Toint
A note on inexact inner products in GMRES
SIAM Journal on Matrix Analysis and Applications, 2022, 43 (3)
Antoine Bernigaud, Serge Gratton, Flavia Lenti, Ehouarn Simon, Oumaima Sohab
Lp‐norm regularization approaches in variational data assimilation
Quarterly Journal of the Royal Meteorological Society, 2021, 147, pp.2067 – 2081. ⟨10.1002/qj.4010⟩
Vinicius Alves de Oliveira, Marie Chabert, Thomas Oberlin, Charly Poulliat, Mickael Bruno, Christophe Latry, Mikael Carlavan, Simon Henrot, Frederic Falzon, Roberto Camarero
Reduced-Complexity End-to-End Variational Autoencoder for on Board Satellite Image Compression
Remote Sensing, 2021, Special Issue Remote Sensing Data Compression, 13 (3), pp.447. ⟨10.3390/rs13030447⟩
Serge Gratton, Ehouarn Simon, David Titley-Peloquin, Philippe Toint
Minimizing convex quadratics with variable precision conjugate gradients
Numerical Linear Algebra with Applications, 2021, 28 (e2337)
François Beuvin, Simon De Givry, Thomas Schiex, Sébastien Verel, David Simoncini
Iterated local search with partition crossover for computational protein design
Proteins – Structure, Function and Bioinformatics, In press, 89 (11), pp.1522-1529. ⟨10.1002/prot.26174⟩
Rachid Benshila, Grégoire Thoumyre, Mahmoud Al Najar, Grégoire Abessolo, Rafael Almar, Erwin Bergsma, Guillaume Hugonnard, Laurent Labracherie, Benjamin Lavie, Tom Ragonneau, Ehouarn Simon, Bastien Vieuble, Dennis G. Wilson
A Deep Learning Approach for Estimation of the Nearshore Bathymetry
Journal of Coastal Research, 2020, 95 (sp1), pp.1011-1015. ⟨10.2112/SI95-197.1⟩
Serge Gratton, Ehouarn Simon, Philippe Toint
An algorithm for the minimization of nonsmooth nonconvex functions using inexact evaluations and its worst-case complexity
Mathematical Programming, Series A, 2020, ⟨10.1007/s10107-020-01466-5⟩
Martin Cooper, Simon de Givry, Thomas Schiex
Graphical Models: Queries, Complexity, Algorithms
Leibniz International Proceedings in Informatics , 2020, 154, pp.4:1–4:22. ⟨10.4230/LIPIcs.STACS.2020.4⟩
Yanna Cruz Cavalcanti, Thomas Oberlin, Nicolas Dobigeon, Cédric Févotte, Simon Stute, Maria-Joao Ribeiro, Clovis Tauber
Factor analysis of dynamic PET images: beyond Gaussian noise
IEEE Transactions on Medical Imaging, 2019, 38 (9), pp.2231-2241. ⟨10.1109/TMI.2019.2906828⟩
Serge Gratton, Selime Gürol, Ehouarn Simon, Philippe Toint
Guaranteeing the convergence of the saddle formulation for weakly constrained 4D‐Var data assimilation
Quarterly Journal of the Royal Meteorological Society, 2018, 144 (717), pp.2592-2602. ⟨10.1002/qj.3355⟩
Serge Gratton, Selime Gürol, Ehouarn Simon, Philippe Toint
A note on preconditioning weighted linear least-squares, with consequences for weakly constrained variational data assimilation
Quarterly Journal of the Royal Meteorological Society, 2018, 144 (712), pp.934-940. ⟨10.1002/qj.3262⟩
Qi Wei, Marcus Chen, Jean-Yves Tourneret, Simon Godsill
Unsupervised nonlinear spectral unmixing based on a multilinear mixing model
IEEE Transactions on Geoscience and Remote Sensing, 2017, vol. 55 (n° 8), pp. 4534-4544. ⟨10.1109/TGRS.2017.2693366⟩
M.E. Gharamti, A. Samuelsen, L. Bertino, Ehouarn Simon, A. Korosov, Ute Daewel
Online tuning of ocean biogeochemical model parameters using ensemble estimation techniques: Application to a one-dimensional model in the North Atlantic
Journal of Marine Systems, 2017, 168, pp.1-16. ⟨10.1016/j.jmarsys.2016.12.003⟩
Laurent Debreu, Emilie Neveu, Ehouarn Simon, François-Xavier Le Dimet, Arthur Vidard
Multigrid solvers and multigrid preconditioners for the solution of variational data assimilation problems
Dans : Quarterly Journal of the Royal Meteorological Society, Wiley, Vol. 142, p. 515-528, janvier 2016.
Ehouarn Simon, Annette Samuelsen, Laurent Bertino, Sandrine Mouysset
Experiences in multiyear combined state-parameter estimation with an ecosystem model of the North Atlantic and Arctic Oceans using the Ensemble Kalman Filter
Dans : Journal of Marine Systems, Elsevier, Vol. 152, p. 1-17, 2015.
Accès : http://dx.doi.org/10.1016/j.jmarsys.2015.07.004 – https://oatao.univ-toulouse.fr/15387/
BibTeXMarion Gehlen, Rosa Barciela, Laurent Bertino, Pierre Brasseur, Momme Butenschön, Fei Chai, Alessandro Crise, Yann Drillet, David Ford, Diane Lavoie, Patrick Lehodey, Coralie Perruche, Annette Samuelsen, Ehouarn Simon
Building the capacity for forecasting marine biogeochemistry and ecosystems: recent advances and future developments
Dans : Journal of Operational Oceanography (JOO), IMarEST, Numéro spécial GODAE OceanView part 1, Vol. 8, p. 168-187, juin 2015.
Accès : http://www.tandfonline.com/doi/abs/10.1080/1755876X.2015.1022350
BibTeXSerge Gratton, Monserrat Rincon-Camacho, Ehouarn Simon, Philippe Toint
Observation Thinning in Data Assimilation Computations
Dans : EURO Journal on Computational Optimization, Association of European Operational Research Societies, Suisse, Vol. 3 N. 1, p. 31-51, 2015.
Ehouarn Simon, Laurent Bertino
Gaussian anamorphosis extension of the DEnKF for combined state parameter estimation: application to a 1D ocean ecosystem model
Dans : Journal of Marine Systems, Elsevier, Vol. 89, p. 1-18, 2012.
Joanna Pelc, Ehouarn Simon, Laurent Bertino, Ghada El Serafy, Arnold Heemink
Application of model reduced 4D-Var to a 1D ecosystem model
Dans : Ocean Modelling, Elsevier, Vol. 57-58, p. 43-58, 2012.
Ehouarn Simon, Annette Samuelsen, Laurent Bertino, Dany Dumont
Estimation of positive sum-to-one constrained zooplakton grazing preferences with the DEnKF: a twin experiment
Dans : Ocean Science, European Geosciences Union (EGU), Munich – Germany, Vol. 8, p. 587-602, 2012.
Ehouarn Simon, Laurent Debreu, Eric Blayo
4D Variational Data Assimilation for Locally Nested Models: complementary theoretical aspects and application to a 2D shallow water model
Dans : International Journal for Numerical Methods in Fluids, Wiley, Vol. 66, p. 135-161, 2011.
Ehouarn Simon, Laurent Bertino
Application of the Gaussian anamorphosis to assimilation in a 3D coupled physical-ecosystem model of the North Atlantic with the EnKF: a twin experiment
Dans : Ocean Science, European Geosciences Union (EGU), Munich – Germany, Vol. 5, p. 495-510, 2009.
Adrien Rouvière, Lucas Pascal, Fabien Méry, Ehouarn Simon, Serge Gratton
Neural Prediction Model for Transition Onset of a Boundary-Layer in Presence of 2D Surface Defects
22th ONERA-DLR Aerospace Symposium (ODAS 2022), Jun 2022, Hamburg, Germany. pp.1-10
Adrien Rouviere, Lucas Pascal, Fabien Méry, Ehouarn Simon, Serge Gratton
Neural prediction model for transition onset of a boundary-layer in presence of 2D surface defects
56th 3AF International Conference on Applied Aerodynamics (AERO 2022), Association Aéronautique et Astronautique de France (3AF), Mar 2022, Toulouse, France. pp.1073, ⟨10.2514/6.2022-1073⟩
Karen Sanchez, Carlos Hinojosa, Henry Arguello, Simon Freiss, Nicolas Sans, Denis Kouame, Olivier Meyrignac, Adrian Basarab
Subspace-based Domain Adaptation Using Similarity Constraints for Pneumonia Diagnosis within a Small Chest X-ray Image Dataset
IEEE 18th International Symposium on Biomedical Imaging (ISBI 2021), Apr 2021, Nice, France. pp.1232-1235, ⟨10.1109/ISBI48211.2021.9434173⟩
Lancelot Dupont, Christophe Jouffrais, Simon Perrault
Vibrotactile Feedback for Vertical 2D-space Exploration
International Conference on Advanced Visual Interfaces (AVI 2020), Sep 2020, Island of Ischia, Italy
Vinicius Alves de Oliveira, Thomas Oberlin, Marie Chabert, Charly Poulliat, Bruno Mickael, Christophe Latry, Mikael Carlavan, Simon Henrot, Frederic Falzon, Roberto Camarero
Simplified entropy model for reduced-complexity end-to-end variational autoencoder with application to on-board satellite image compression
7th International Workshop on On-Board Payload Data Compression (OBPDC 2020), European Space Agency (ESA); Centre national d’études spatiales (CNES), Sep 2020, Online, Greece. pp.1-8
Sandra Bardot, Marcos Serrano, Simon Perrault, Shengdong Zhao, Christophe Jouffrais
Investigating Feedback for Two-Handed Exploration of Digital Maps Without Vision
17th IFIP Conference on Human-Computer Interaction (INTERACT), Sep 2019, Paphos, Cyprus. pp.305-324, ⟨10.1007/978-3-030-29381-9_19⟩
Yanna Cruz Cavalcanti, Thomas Oberlin, Nicolas Dobigeon, Cédric Févotte, Simon Stute, Clovis Tauber
Unmixing dynamic PET images: combining spatial heterogeneity and non-Gaussian noise
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2019), May 2019, Brighton, United Kingdom. pp.1373-1377
Florine Simon, Anne Roudaut, Pourang Irani, Marcos Serrano
Finding Information on Non-Rectangular Interfaces
ACM International Conference on Human Factors in Computing Systems (ACM CHI 2019), May 2019, Glasgow, United Kingdom. pp.1-8, ⟨10.1145/3290605.3300332⟩
Yanna Cruz Cavalcanti, Thomas Oberlin, Nicolas Dobigeon, Simon Stute, Clovis Tauber
Démélange d’images TEP dynamiques
26eme Colloque GRETSI sur le Traitement du Signal et des Images (GRETSI 2017), Sep 2017, Juan-les-Pins, France. pp.1-4
Ehouarn Simon, Laurent Bertino
Joint state-parameter estimation in a 3D coupled physical-ecosystem model of the North Atlantic: assimilation of SeaWiFS data with a non-Gaussian extension of an ESRF, ESA Living Planet Symposium 2010, Bergen, Norway, European Space Agency (ESA Publications), 2010.
Martin Cooper, Simon de Givry, Thomas Schiex
Valued Constraint Satisfaction Problems
A Guided Tour of Artificial Intelligence Research, 2, Springer International Publishing, pp.185-207, 2020, AI Algorithms, 978-3-030-06167-8. ⟨10.1007/978-3-030-06167-8_7⟩
Serge Gratton, Selime Gurol, Ehouarn Simon, Philippe Toint
Issues in making the weakly-constrained 4DVar formulation computationally efficient
Griewank, Andreas; Reich, Sebastian; Roulstone, Ian; Stuart, Andrew. Mathematical and Algorithmic Aspects of Data Assimilation in the Geosciences, 13 (4), Mathematisches Forschungsinstitut Oberwolfach, pp.2705-2748, 2017, Oberwolfach Reports, ISSN: 1660-8933. ⟨10.4171/OWR/2016/47⟩
Serge Gratton, Selime Gurol, Ehouarn Simon, Philippe Toint
Issues in making the weakly-constrained 4DVar formulation computationally efficient
Dans : Mathematical and Algorithmic Aspects of Data Assimilation in the Geosciences. Andreas Griewank, Sebastian Reich, Ian Roulstone, Andrew Stuart (Eds.) , Mathematisches Forschungsinstitut Oberwolfach, (en ligne), Vol. 13, Oberwolfach Reports, 2016.
Laurent Debreu, Emilie Neveu, Ehouarn Simon, François-Xavier Le Dimet
Multigrid algorithms and local mesh refinement methods in the context of variational data assimilation
Dans : Advanced Data Assimilation for Geosciences. Lecture Notes of Les Houches Summer School 2012. Eric Blayo, Marc Bocquet, Emmanuel Cosme, Leticia Cugliandolo (Eds.) , Oxford University Press, p. 395-412, octobre 2014.
Quelques contributions à l’assimilation de données : des moindres carrés non-linéaires pondérés en grande dimension, applications en océanographie
2023
Jean-Marc Tregan, Jean-Luc Amestoy, Mégane Bati, Jean-Jacques Bézian, Stéphane Blanco, Laurent Brunel, Cyril Caliot, Julien Charon, Jean-François Cornet, Christophe Coustet, Louis D’alençon, Jérémi Dauchet, Sébastien Dutour, Simon Eibner, Mouna El-Hafi, Vincent Eymet, Olivier Farges, Vincent Forest, Richard Fournier, Mathieu Galtier, Victor Gattepaille, Jacques Gautrais, Zili He, Frédéric Hourdin, Loris Ibarrart, Jean-Louis Joly, Paule Lapeyre, Pascal Lavieille, Marie-Hélène Lecureux, Jacques Lluc, Marc Miscevic, Nada Chems Mourtaday, Yaniss NYFFENEGGER-PERE, Lionel Pélissier Pelissier, Léa Penazzi, Benjamin Piaud, Clément Rodrigues-Viguier, Gisèle Roques, Maxime Roger, Thomas Saez, Guillaume Terrée, Najda Villefranque, Thomas Vourc’h, Daniel Yaacoub
Coupling radiative, conductive and convective heat-transfers in a single Monte Carlo algorithm: a general theoretical framework for linear situations
2022
Serge Gratton, Ehouarn Simon, David Titley-Peloquin, Philippe Toint
Exploiting variable precision in GMRES
2020
Yanna Cruz Cavalcanti, Thomas Oberlin, Nicolas Dobigeon, Simon Stute, Maria Ribeiro, Clovis Tauber
Unmixing dynamic PET images for voxel-based kinetic component analysis
2017