Achim Zeileis

Overview

Achim Zeileis is a statistician and econometrician (Universität Innsbruck; formerly WU Vienna) known for prolific contributions to statistical computing in R — including packages for econometrics (sandwich, lmtest, AER), count-data models (pscl, countreg), and recursive partitioning (party/partykit).

Key Contributions / Features

• Count-data regression in R — Zeileis–Kleiber–Jackman (2008): With Christian Kleiber and Simon Jackman, the reference implementation and review of Poisson, quasi-Poisson, negative-binomial, hurdle, and zero-inflated regression models, via pscl::hurdle/zeroinfl. See Count-Data Regression and Zeileis-Kleiber-Jackman (2008).
• Econometric computing in R: Author/co-author of the sandwich (robust covariances), lmtest, and AER (with Kleiber) packages, and of Applied Econometrics with R (Kleiber–Zeileis 2008).

Related

• Count-Data Regression
• Christian Kleiber
• Simon Jackman
• Zeileis-Kleiber-Jackman (2008)