129 citations · 497 across the 43 of their papers we have counts for
8 papers · 1 filter
A comparison between Bayesian and ordinary kriging based on validation criteria: application to radiological characterisation
Martin Wieskotten, Marielle Crozet, Bertrand Iooss +2
In decommissioning projects of nuclear facilities, the radiological characterisation step aims to estimate the quantity and spatial distribution of different radionuclides. To carr…
Background Error Covariance Iterative Updating with Invariant Observation Measures for Data Assimilation
Sibo Cheng, Jean-Philippe Argaud, Bertrand Iooss +2
In order to leverage the information embedded in the background state and observations, covariance matrices modelling is a pivotal point in data assimilation algorithms. These matr…
Optimal Uncertainty Quantification of a risk measurement from a thermal-hydraulic code using Canonical Moments
Jerome Stenger, Fabrice Gamboa, Merlin Keller +1
We study an industrial computer code related to nuclear safety. A major topic of interest is to assess the uncertainties tainting the results of a computer simulation. In this work…
Model Assisted Probability of Detection curves: New statistical tools and progressive methodology
Loïc Le Gratiet, Bertrand Iooss, Géraud Blatman +3
The Probability Of Detection (POD) curve is a standard tool in several industries to evaluate the performance of Non Destructive Testing (NDT) procedures for the detection of harmf…
Stochastic simulators based optimization by Gaussian process metamodels -- Application to maintenance investments planning issues
Thomas Browne, Bertrand Iooss, Loïc Le Gratiet +2
This paper deals with the optimization of industrial asset management strategies, whose profitability is characterized by the Net Present Value (NPV) indicator which is assessed by…
Calculations of Sobol indices for the Gaussian process metamodel
Amandine Marrel, Bertrand Iooss, Beatrice Laurent +1
Global sensitivity analysis of complex numerical models can be performed by calculating variance-based importance measures of the input variables, such as the Sobol indices. Howeve…