6 citations · 6 across the 3 of their papers we have counts for
4 papers · 1 filter
Concordance probability in a big data setting: application in non-life insurance
Robin Van Oirbeek, Christopher Grumiau, Tim Verdonck
The concordance probability or C-index is a popular measure to capture the discriminatory ability of a regression model. In this article, the definition of this measure is adapted…
Multiple radial positive solutions of semilinear elliptic problems with Neumann boundary conditions
Denis Bonheure, Christopher Grumiau, Christophe Troestler
Assuming is a ball in , we analyze the positive solutions of the problem \[ \begin{cases} -Δu+u= |u|^{p-2}u, &\text{ in } B_{R},\newline \partial_νu=0,&\text…
Nonlinear Schrödinger problems: symmetries of some variational solutions
Christopher Grumiau
In this paper, we are interested in the nonlinear Schrödinger problem $-Δu + Vu = \abs{u}^{p-2}u$ submitted to the Dirichlet boundary conditions. We consider and we are worki…
Lane Emden problems with large exponents and singular Liouville equations
Massimo Grossi, Christopher Grumiau, Filomena Pacella
We consider the Lane-Emden Dirichlet problem -Δu = \abs{u}^{p-1}u, in B, u =0, on \partial B, where and denotes the unit ball in $\IR^2$. We study the asymptotic behavior…