R package: bggum

JBrandon Duck-Mayr, Jacob Montgomery, Patrick Silva, Luwei Ying
Jan 19, 2020

bggum provides R tools for a Bayesian approach to estimating Generalized Graded Unfolding Model (GGUM) (Roberts, Donoghue, and Laughlin 2000) parameters. For more information on the GGUM and our MC3 estimation algorith, please see my paper with Jacob Montgomery, “Ends Against the Middle: Measuring Latent Traits When Opposites Respond the Same Way for Antithetical Reasons”.

You can find it on CRAN, and you can find the development version on my GitHub.

JBrandon Duck-Mayr
JBrandon Duck-Mayr
Assistant Professor of Government

I research American political institutions, with a particular focus on judicial decision making and the role of law in judicial politics.