author keywords: Bayesian inference; divergence time estimation; effective sample size; Hamiltonian Monte Carlo; pathogens; phylogenetics; ratio transformation

TL;DR: A ratio transformation is explored that maps the original N-1 internal node heights into a space of one height parameter and N-2 ratio parameters and improves inference efficiency by at least 5-fold and makes it computationally feasible to incorporate mixed-effects molecular clock models for the Ebola virus example. (via Semantic Scholar)