Julien Chevallier

collaborators

3 papers

math.ST2024

Community detection for binary graphical models in high dimension

Julien Chevallier, Guilherme Ost

Let $N$ components be partitioned into two communities, denoted $P_{+}$ and $P_{-}$ , possibly of different sizes. Assume that they are connected via a directed and weight…

math.ST2024

Inferring the dependence graph density of binary graphical models in high dimension

Julien Chevallier, Eva Löcherbach, Guilherme Ost

We consider a system of binary interacting chains describing the dynamics of a group of $N$ components that, at each time unit, either send some signal to the others or remain sile…

math.PR2017

Mean field limits for nonlinear spatially extended hawkes processes with exponential memory kernels

Julien Chevallier, A Duarte, E Löcherbach +1

We consider spatially extended systems of interacting nonlinear Hawkes processes modeling large systems of neurons placed in Rd and study the associated mean field limits. As the t…