1 code implementation • 17 May 2022 • Andrés F. López-Lopera, François Bachoc, Olivier Roustant
First, we show that our framework enables to satisfy the constraints everywhere in the input space.
no code implementations • 30 Oct 2021 • Jhouben Cuesta-Ramirez, Rodolphe Le Riche, Olivier Roustant, Guillaume Perrin, Cedric Durantin, Alain Gliere
In this article, costly mixed problems are approached through Gaussian processes where the discrete variables are relaxed into continuous latent variables.
no code implementations • 15 Jan 2019 • Andrés F. López-Lopera, François Bachoc, Nicolas Durrande, Jérémy Rohmer, Déborah Idier, Olivier Roustant
Finally, on 2D and 5D coastal flooding applications, we show that more flexible and realistic GP implementations can be obtained by considering noise effects and by enforcing the (linear) inequality constraints.
1 code implementation • 20 Oct 2017 • Andrés F. López-Lopera, François Bachoc, Nicolas Durrande, Olivier Roustant
Introducing inequality constraints in Gaussian process (GP) models can lead to more realistic uncertainties in learning a great variety of real-world problems.
1 code implementation • 18 Apr 2017 • Mickaël Binois, David Ginsbourger, Olivier Roustant
Then, the search of solutions can be reduced to the random embedding of a low dimensional space into the original one, resulting in a more manageable optimization problem.
no code implementations • 12 Dec 2016 • Olivier Roustant, Franck Barthe, Bertrand Iooss
We give semi-analytical results for some frequent distributions (truncated exponential, triangular, truncated normal), and present a numerical method in the general case.
no code implementations • 13 Nov 2014 • Mickaël Binois, David Ginsbourger, Olivier Roustant
This works extends the Random Embedding Bayesian Optimization approach by integrating a warping of the high dimensional subspace within the covariance kernel.
no code implementations • 6 Aug 2013 • David Ginsbourger, Olivier Roustant, Nicolas Durrande
We study pathwise invariances of centred random fields that can be controlled through the covariance.