NDLI: Clock-constrained tree proposal operators in Bayesian phylogenetic inference

Content Provider	IEEE Xplore Digital Library
Author	Hohna, S. Defoin-Platel, M. Drummond, A.J.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Auckland, Auckland (Hohna, S.; Defoin-Platel, M.; Drummond, A.J.)
Abstract	Bayesian Markov chain Monte Carlo (MCMC) has become one of the principle methods of performing inference of phylogenetic trees. The MCMC algorithm requires the definition of a transition kernel over the state space, which depends on tree proposal operators. So, the precise form of these operators has a large impact on the computational efficiency of the algorithm. In this paper we investigate the efficiency of different tree proposals specialized on clock-constrained phylogenetic trees. Two new operators are developed and their efficiency is compared to five standard operators. Each of the seven operators is tested individually on three synthetic datasets and eleven real datasets. In addition, the single operators are compared to different mixtures of operators. Results show that our new operators perform better than their standard counterparts, but no operator alone achieved a high efficiency on the full panel of data sets tested. Finally, our new proposed mixture using all operators together provides better performance than current techniques.
Starting Page	1
Ending Page	7
File Size	2764709
Page Count	7
File Format	PDF
ISBN	9781424428441
DOI	10.1109/BIBE.2008.4696663
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-08
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Clocks Proposals Bayesian methods Phylogeny Inference algorithms Testing Monte Carlo methods Kernel State-space methods Computational efficiency
Content Type	Text
Resource Type	Article

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