Every year the APO team organizes a PhD day where all PhD students present their work. Here we gather their presentations.

• Tzvetomila Slavova "Parallel solution of sparse linear systems in an out of core environnement."
• Cyril Allignol "Optimisation des créneaux de décollage pour la déconfliction des trajectoires 4D d'avions."
• Sandrine Mouysset "Spectral Clustering et Matrice d'Affinité Gaussienne : Paramétrisations Locales et Globales."
• Bilel Daoud "Transfert orbital à poussée faible avec minimisation de la consommation."
• François Huchet "Optimisation de prévision de trajectoires d'avions."
• Jordan Ninin "Optimisation globale exacte basée sur des reformulations linéaires automatiques."
• Romain Dujol, Post-Doc CNES "Augmented lagrangian for infinite-dimentional equality constrained optimisation."

• Raphael Deau "Optimisation des séquences de piste et des mouvements au sol sur les grands aéroports."
• Francois-Henry Rouet " Calcul partiel de l'inverse d'une matrice creuse de grande taille "
• Cyril Allignol " Planification de trajectoires 4D d'avions pour la résolution de conflits "
• Sandrine Mouysset " On the efficiency of Spectral Clustering : interpretation and results "
• Bilel Daoud " Transfert terre-lune en temps minimal "
• Jordan Ninin " An Automatic Linear Reformulation Technique Based on Affine Arithmetic "
• Olivier Cots " Suivi de chemin par les méthodes homotopiques différentielles : application au contrôle optimal "
• Xavier Pinel " Perturbed two-level preconditioner for the solution of three-dimentional Helmholtz problems in the frequency domain "
• Anke Troeltzsch " Self-correcting geometry technique for derivative free unconstrained optimization "

• Sandrine Mouysset " On the efficiency of Spectral Clustering : interpretation, parallel computation and results "
• Selime Gurol "Moindres carrés linéaires pour l'assimilation"
• Anke Troeltzsch "Optimisation sans dérivées"
• François-Henry Rouet "Calcul en parallèle d'entrées de l'inverse d'une matrice et scalabilité mémoire d'un solveur multifrontal"
• Cyril Allignol "Planification de trajectoires 4D d'avions pour la résolution de conflits"
• Raphael Deau "Optimisation des séquences de pistes et des mouvements au sol sur grands aéroports"
• Raphael Lago "Problèmes inverses en géophysique"
• Jordan Ninin "A mixed affine reformulation method for global optimization"
• Olivier Cots "Une application du contrôle optimal au contrôle quantique"
• Brice Foucault “Elaboration d'un logiciel de clé de décision pour l'analyse de biopuces”
• Clément Weisbecker “Efficient solution of sparse linear systems through low-rank approximation”

• Cyril Allignol “Combining Flight Level Allocation with Ground Holding to Optimize 4D-Deconfliction”
• Selime Gurol “Preconditioning Krylov subspace methods in dual space with an application to 4D-Variational data assimilation”
• François-Henry Rouet “Memory scalability of a multifrontal solver”
• Richard Alligier “Genetic Programming applied to aircraft trajectory prediction”
• Clément Weisbecker “Grouping variables in Frontal Matrices to improve Low-Rank Approximations in a Multifrontal Solver.”
• Mohamed Zenadi “Solving Linear Systems with Block Cimmino Algorithm”

• Youssef DIOUANE "Globally Convergent Evolution Strategies and CMA-ES"
• Selime GUROL "Preconditioning least-squares problems using duality with an application to data assimilation"
• Raphael LAGO "Deflated Minimal Block Residual - A New Iterative Method for Solving Linear Systems With Multiple Right Hand Sides"
• David TITLEcdY PELOQUIN "Linearizing the Method of Conjugate Gradients"
• Richard ALLIGIER "Inferring a mass and a thrust setting law from data to improve aircraft trajectory prediction"
• Loïc CELLIER "Optimal control model and resolution approaches for aircraft conflict avoidance problems via speed regulation"
• Charlie VANARET "Hybridization of evolutionary algorithms and interval analysis for global optimization"
• Clément WEISBECKER "Improving multifrontal methods by means of low-rank approximation techniques"
• Florent LOPEZ "Direct solvers for GPU-accelerated multi-core architectures"
• Mohamed ZENADI "The Augmented Block-Cimmino Distributed Method"

• Youssef DIOUANE "Globally convergent evolution strategies for unconstrained and constrained optimization"
• Richard ALLIGIER "Aircraft Trajectory Prediction: Regression Method vs Point-Mass Model"
• Charlie VANARET "Preventing Premature Convergence and Proving the Optimality in Evolutionary Algorithms"
• Mohamed ZENADI "The augmented block Cimmino distributed method"
• Ehouarn SIMON "Assimilation de données pour les fluides géophysiques : approches multiéchelles et non-gaussiennes"
• Clément ROYER "Direct search using probabilistic descent"
• Sylvain MERCIER "Limited Memory Preconditioners for symmetric indefinite linear systems"
• Elhoucine BERGOU "Hybrid 4DVAR and Ensemble Kalman Smoother (EnKS) methods without tangents and adjoints"

• Youssef DIOUANE "Globally convergent evolution strategies for constrained optimization
• Clément ROYER "Direct search using probabilistic descent
• Nasser SOUALMI "Asynchronous parallel optimization methods
• Anne CASSIER "Theoretical and numerical study of a preconditioner for saddle-point systems
• Olivier COTS "On numerical methods and applications in optimal control
• Charlie VANARET "Combining Interval Methods with Evolutionary Algorithms for Global Optimization
• Richard ALLIGIER "Machine Learning Applied to Aircraft Trajectory Prediction
• Damien GOUBINAT "Optimisation de trajectoires avion : Présentation des problèmes
• Théo MARY "Performance of Random Sampling for Computing Low-Rank Approximation on GPUs

• Clément ROYER "From first to second-order quality measures in direct-search methods"
• Damien GOUBINAT "Numerical analysis in optimal control problem for aircraft trajectories"
• Théo MARY "3D frequency-domain seismic modeling with a parallel BLR multifrontal direct solver"
• Florent LOPEZ "task-based multifrontal qr solver for heterogeneous architectures"
• Pierre JOLIVET "large-scale linear solvers using domain decomposition preconditioners"