Table 2.

StarBeast3 parallel operator scheme for gene trees and their associated site models (assumed to be an HKY model with transition–transversion ratio and nucleotide frequencies )

Operator	Weight	Reference
		Parallel Gene-Tree Operator
Gene trees
	15	Drummond et al. (2002)
	15	Drummond et al. (2002)
	15	Drummond et al. (2002)
	10	Hohna et al. (2008)
	30
	10
	10	Bactrian Operators for Trees
	100
		Hohna et al. (2008)
		Bouckaert (2021)
Site models
	5	Baele et al. (2017)
	0.5
	0.5
	0.5

Notes: Each operator is applicable to a single gene tree or its site model . ) generated proposals for the site model and complete set of tree node heights simultaneously. Operator weights are normalized into proposal probabilities within a single MCMC chain called by . Further operator details can be found in (Drummond and Bouckaert, 2015).

Bactrian kernel applied to random walk (Yang and Rodríguez 2013).