PrioriTree: a utility for improving phylodynamic analyses in BEAST

Summary Phylodynamic methods are central to studies of the geographic and demographic history of disease outbreaks. Inference under discrete-geographic phylodynamic models—which involve many parameters that must be inferred from minimal information—is inherently sensitive to our prior beliefs about the model parameters. We present an interactive utility, PrioriTree, to help researchers identify and accommodate prior sensitivity in discrete-geographic inferences. Specifically, PrioriTree provides a suite of functions to generate input files for—and summarize output from—BEAST analyses for performing robust Bayesian inference, data-cloning analyses, and assessing the relative and absolute fit of candidate discrete-geographic (prior) models to empirical datasets. Availability and Implementation PrioriTree is distributed as an R package available at , with a comprehensive user manual provided at . Contact jsigao{at}ucdavis.edu ### Competing Interest Statement The authors have declared no competing interest.