108 citations · 109 across the 2 of their papers we have counts for
6 papers
On gradient bounds for the heat kernel on the Heisenberg group
Dominique Bakry, Fabrice Baudoin, Michel Bonnefont +1
It is known that the couple formed by the two dimensional Brownian motion and its Lévy area leads to the heat kernel on the Heisenberg group, which is one of the simplest sub-Riema…
A new method for the estimation of variance matrix with prescribed zeros in nonlinear mixed effects models
Djalil Chafai, Didier Concordet
We propose a new method for the Maximum Likelihood Estimator (MLE) of nonlinear mixed effects models when the variance matrix of Gaussian random effects has a prescribed pattern of…
On the strong consistency of asymptotic M-estimators
Djalil Chafai, Didier Concordet
The aim of this article is to simplify Pfanzagl's proof of consistency for asymptotic maximum likelihood estimators, and to extend it to more general asymptotic M-estimators. The m…
Explicit formulas for a continuous stochastic maturation model. Application to anticancer drug pharmacokinetics/pharmacodynamics
Djalil Chafai, Didier Concordet
We present a continuous time model of maturation and survival, obtained as the limit of a compartmental evolution model when the number of compartments tends to infinity. We establ…
On nonparametric maximum likelihood for a class of stochastic inverse problems
Djalil Chafai, Jean-Michel Loubes
We establish the consistency of a nonparametric maximum likelihood estimator for a class of stochastic inverse problems. We proceed by embedding the framework into the general sett…
Glauber versus Kawasaki for spectral gap and logarithmic Sobolev inequalities of some unbounded conservative spin systems
Djalil Chafai
Inspired by the recent results of C. Landim, G. Panizo and H.-T. Yau [LPY] on spectral gap and logarithmic Sobolev inequalities for unbounded conservative spin systems, we study un…