Mixed Poisson regression models, a class of generalized linear mixed models, are commonly used to analyze count data that exhibit overdispersion. Because inference for these models can be computationally difficult, simplifying distributional assumptions are often made. We consider an influence function representing effects of infinitesimal perturbations of the mixing distribution. This function...

s and List of Participants Systemes dynamiques Lotka-Volterra et methodes de points interieurs en optimisation sous contraintes. Etude de la dynamique limite lorsque le parametre barriere tend vers zero. Hedy Attouch Laboratoire ACSIOM Université Montpellier II A One Perturbation Variational Principle and Applications Jonathan Borwein CECM Simon Fraser University BC, V5A 1S6 In a typical variat...

In this paper we determine the number of the meaningful compositions of higher order of the differential operations and Gateaux directional derivative.

We find an expression for the Gateaux derivative of C⁎-algebra norm. Using this, we obtain a characterization orthogonality operator A∈B(H,K) to subspace, under assumption dist(A,K(H,K))<‖A‖. subdifferential set norm function at A∈B(H) when dist(A,K(H))<‖A‖. also give new proofs known results on closely related notions smooth points and Birkhoff-James spaces B(H) Cb(Ω), respectively.

This paper deals with the number of meaningful compositions of higher order of differential operations and the Gateaux directional derivative.