3 papers
math.ST2026
Csiszár indices and interpolating copulas
Cristina Butucea, Jean-François Delmas, Anne Dutfoy +1
We study various properties of -divergences and Csiszár indices between two probability distributions in very general setups for the convex function and for the probability…
stat.ME2025
A tree-based Polynomial Chaos expansion for surrogate modeling and sensitivity analysis of complex numerical models
Faten Ben Said, Aurélien Alfonsi, Anne Dutfoy +4
This paper introduces Tree-based Polynomial Chaos Expansion (Tree-PCE), a novel surrogate modeling technique designed to efficiently approximate complex numerical models exhibiting…
stat.ML2025
Off-the-grid learning of mixtures from a continuous dictionary
Cristina Butucea, Jean-François Delmas, Anne Dutfoy +1
We consider a general non-linear model where the signal is a finite mixture of an unknown, possibly increasing, number of features issued from a continuous dictionary parameterized…