A non-linear conjugate gradient in dual space for Lp-norm regularized non-linear least squares with application in data assimilation
Antoine Bernigaud
,
Serge Gratton
,
Ehouarn Simon
Article dans une revue
hal-04096465v1
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Minimizing convex quadratics with variable precision conjugate gradients
Serge Gratton
,
Ehouarn Simon
,
David Titley-Peloquin
,
Philippe Toint
Numerical Linear Algebra with Applications , 2021, 28 (e2337)
Article dans une revue
hal-02959082v1
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Neural Prediction Model for Transition Onset of a Boundary-Layer in Presence of 2D Surface Defects (ODAS 2022)
Adrien Rouvière
,
Lucas Pascal
,
Fabien Méry
,
Ehouarn Simon
,
Serge Gratton
22th ONERA-DLR Aerospace Symposium (ODAS 2022) , Jun 2022, Hamburg, Germany. pp.1-10
Communication dans un congrès
hal-03774047v1
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Assimilation variationnelle de données pour des modèles emboîtés
Ehouarn Simon
Modélisation et simulation. Université Joseph-Fourier - Grenoble I, 2007. Français.
⟨NNT : ⟩
Thèse
tel-00194593v1
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4D variational data assimilation for locally nested models: optimality system and preliminary experiments
Laurent Debreu
,
Ehouarn Simon
,
Eric Blayo
[Research Report] RR-7675, INRIA. 2011, pp.19
Rapport
inria-00607177v1
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Assimilation de données variationnelle pour des modèles multi-échelles
Ehouarn Simon
,
Laurent Debreu
,
Eric Blayo
Colloque national sur l'assimilation de données , May 2006, Toulouse, France
Communication dans un congrès
hal-00171642v1
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Les algorithmes et la puissance de calcul dans les techniques de prévision pour les géosciences en grande dimension vus sous l'angle de l'optimisation mathématique
Serge Gratton
,
Selime Gürol
,
Ehouarn Simon
,
Philippe Toint
Colloque Modélisation : succès et limites (2016) , Dec 2016, Paris, France. pp.37-47
Communication dans un congrès
hal-03636585v1
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Quelques contributions à l’assimilation de données : des moindres carrés non-linéaires pondérés en grande dimension, applications en océanographie
Ehouarn Simon
Optimisation et contrôle [math.OC]. Toulouse INP, 2023
HDR
hal-04141488v1
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Observation thinning in data assimilation computations
Serge Gratton
,
Monserrat Rincon-Camacho
,
Ehouarn Simon
,
Philippe Toint
Article dans une revue
hal-02960628v1
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Exploiting variable precision in GMRES
Serge Gratton
,
Ehouarn Simon
,
David Titley-Peloquin
,
Philippe Toint
2020
Pré-publication, Document de travail
hal-02943241v1
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Multigrid solvers and multigrid preconditioners for the solution of variational data assimilation problems
Laurent Debreu
,
Emilie Neveu
,
Ehouarn Simon
,
François-Xavier Le Dimet
,
Arthur Vidard
Quarterly Journal of the Royal Meteorological Society , 2016, 142 (694), pp.515-528.
⟨10.1002/qj.2676⟩
Article dans une revue
hal-00874643v1
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Gaussian Anamorphosis for Ensemble Kalman Filter Analysis of SAR-Derived Wet Surface Ratio Observations
Thanh Huy Nguyen
,
Sophie Ricci
,
Andrea Piacentini
,
Ehouarn Simon
,
Raquel Rodriguez-Suquet
,
et al.
Article dans une revue
hal-04318160v1
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Online tuning of ocean biogeochemical model parameters using ensemble estimation techniques: Application to a one-dimensional model in the North Atlantic
M.E. Gharamti
,
A. Samuelsen
,
L. Bertino
,
Ehouarn Simon
,
A. Korosov
,
et al.
Article dans une revue
hal-02960626v1
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Issues in making the weakly-constrained 4DVar formulation computationally efficient
Serge Gratton
,
Selime Gurol
,
Ehouarn Simon
,
Philippe Toint
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⟩
Chapitre d'ouvrage
hal-03176447v1
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A Deep Learning Approach for Estimation of the Nearshore Bathymetry
Rachid Benshila
,
Grégoire Thoumyre
,
Mahmoud Al Najar
,
Grégoire Abessolo
,
Rafael Almar
,
et al.
Article dans une revue
hal-02769859v1
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Covariance matrix estimation for ensemble-based Kalman filters with multiple ensembles
Serge Gratton
,
Ehouarn Simon
,
David Titley-Peloquin
Article dans une revue
hal-04055824v1
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Assimilation de données variationnelle pour des modèles multi-grilles
Ehouarn Simon
,
Laurent Debreu
,
Eric Blayo
Colloque national sur l'assimilation de données , May 2006, Toulouse, France
Communication dans un congrès
hal-00171710v1
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4D-Variational data assimilation for locally nested numerical models
Ehouarn Simon
,
Eric Blayo
,
Laurent Debreu
GODAE Final Symposium , Nov 2008, Nice, France
Communication dans un congrès
inria-00344507v1
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4D-Variational data assimilation for locally nested numerical models
Ehouarn Simon
,
Laurent Debreu
,
Eric Blayo
European Geophysical Union General Assembly 2009 , Apr 2009, Vienna, Austria
Communication dans un congrès
hal-00795819v1
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4D Variational Data Assimilation for Locally Nested Models : complementary theoretical aspects and application to a 2D shallow water model
Ehouarn Simon
,
Laurent Debreu
,
Eric Blayo
International Journal for Numerical Methods in Fluids , 2011, 66 (2), pp.135-161.
⟨10.1002/fld.2244⟩
Article dans une revue
istex
hal-00658105v1
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Neural prediction model for transition onset of a boundary-layer in presence of 2D surface defects
Adrien Rouviere
,
Lucas Pascal
,
Fabien Méry
,
Ehouarn Simon
,
Serge Gratton
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⟩
Communication dans un congrès
hal-03909124v1
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4D variational data assimilation for locally nested models
Ehouarn Simon
,
Laurent Debreu
,
Eric Blayo
European Geophysical Union General Assembly , Apr 2006, Vienne, Austria
Communication dans un congrès
hal-00171657v1
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Multigrid algorithms and local mesh refinement methods in the context of variational data assimilation
Laurent Debreu
,
Emilie Neveu
,
François Xavier Le Dimet
,
Ehouarn Simon
Eric Blayo; Marc Bocquet; Emmanuel Cosme; F. Cugliandolo Leticia.
Advanced Data Assimilation for Geosciences: Lecture Notes of the Les Houches School of Physics: Special Issue, June 2012 ,
Oxford University Press , pp.576, 2014, Lecture notes of "Les Houches" summer school 2012, 9780198723844.
⟨10.1093/acprof:oso/9780198723844.003.0017⟩
Chapitre d'ouvrage
hal-01095939v1
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A Kernel Extension of the Ensemble Transform Kalman Filter
Sophie Mauran
,
Sandrine Mouysset
,
Ehouarn Simon
,
Laurent Bertino
Communication dans un congrès
hal-04145716v1
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A note on preconditioning weighted linear least-squares, with consequences for weakly constrained variational data assimilation
Serge Gratton
,
Selime Gürol
,
Ehouarn Simon
,
Philippe Toint
Quarterly Journal of the Royal Meteorological Society , 2018, 144 (712), pp.934-940.
⟨10.1002/qj.3262⟩
Article dans une revue
hal-02959395v1
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An algorithm for the minimization of nonsmooth nonconvex functions using inexact evaluations and its worst-case complexity
Serge Gratton
,
Ehouarn Simon
,
Philippe Toint
Article dans une revue
hal-02943960v1
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Dealing with Non-Gaussianity of SAR-Derived Wet Surface Ratio for Flood Extent Representation Improvement
Thanh Huy Nguyen
,
Sophie Ricci
,
Andrea Piacentini
,
Ehouarn Simon
,
Raquel Rodriquez Suquet
,
et al.
Communication dans un congrès
hal-04254492v1
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Experiences in multiyear combined state-parameter estimation with an ecosystem model of the North Atlantic and Arctic Oceans using the Ensemble Kalman Filter.
Ehouarn Simon
,
Annette Samuelsen
,
Laurent Bertino
,
Sandrine Mouysset
Article dans une revue
hal-02960624v1
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Neural prediction model for transition onset of a boundary layer in presence of two-dimensional surface defects
Adrien Rouviere
,
Lucas Pascal
,
Fabien Méry
,
Ehouarn Simon
,
Serge Gratton
Article dans une revue
hal-04165542v1
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Lp‐norm regularization approaches in variational data assimilation
Antoine Bernigaud
,
Serge Gratton
,
Flavia Lenti
,
Ehouarn Simon
,
Oumaima Sohab
Quarterly Journal of the Royal Meteorological Society , 2021, 147, pp.2067 - 2081.
⟨10.1002/qj.4010⟩
Article dans une revue
hal-03160275v1
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