• Publications
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Improving the Flexibility and Robustness of Model-based Derivative-free Optimization Solvers
TLDR
We present two software packages for derivative-free optimization (DFO): DFO-LS for nonlinear least-squares problems and Py-BOBYQA for general objectives, both with optional bound constraints. Expand
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A Heuristic Method for Large-Scale Cognitive-Diagnostic Computerized Adaptive Testing
TLDR
We present a new method to provide adaptive tests and useful feedback to the examinee, even with large databases of skills. Expand
  • 5
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A generalization of the local gradual deformation method using domain parameterization
TLDR
In recent years, the local gradual deformation method has been widely used to parameterize geostatistical realizations. Expand
  • 4
Some inverse problems around the tokamak Tore Supra
We consider two inverse problems related to the tokamak \textsl{Tore Supra} through the study of the magnetostatic equation for the poloidal flux. The first one deals with the Cauchy issue ofExpand
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A Derivative Free Optimization Method Adapted to Partially Separable Functions for History Matching Problems
History matching is a challenging optimization problem that involves numerous evaluations of a very expensive objective function through the simulation of complex fluids flows inside an oilExpand
A Generalized Local Gradual Deformation Method for History Matching
Geostatistical methods are commonly used to characterize oil field heterogeneities in order to establish a predictive reservoir model. To reduce the model uncertainties, dynamic information, such asExpand
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La séparation chez les couples corésidents de même sexe et de sexe différent
Les couples de meme sexe s’inscrivent dans un schema de diversification des situations conjugales et familiales en Europe. L’enquete Generations et genre (Generations and Gender Survey), utilisee iciExpand
Paramétrisation et optimisation sans dérivées pour le problème de calage d'historique. (Parametrization and derivative free optimization for the history matching problem)
  • B. Marteau
  • Physics, Computer Science
  • 4 February 2015
TLDR
Un nouvel algorithme d’optimisation geostatistique sans derivees adaptes aux particularitesdu probleme sont presentes ici. Expand