Gelman is currently a professor of political science and statistics at Columbia University, where he also directs the Applied Statistics Center.
The Applied Statistics Center conducts research with several other departments at Columbia University, as well as containing a number of individual projects.
Gelman is a practitioner of Bayesian statistics, and hierarchical models.

He is a major contributor to the statistical programming framework Stan.
Gelman is currently a professor of political science and statistics at Columbia University, where he also directs the Applied Statistics Center. The Applied Statistics Center conducts research with several other departments at Columbia University, as well as containing a number of individual projects. Gelman is a practitioner of Bayesian statistics, and hierarchical models.
He is a major contributor to the statistical programming framework Stan.
Andrew Gelman