期刊
METHODS IN ECOLOGY AND EVOLUTION
卷 8, 期 1, 页码 22-27出版社
WILEY
DOI: 10.1111/2041-210X.12612
关键词
fast methods; linear-time algorithm; missing data; multivariate Ornstein-Uhlenbeck; phylogenetic comparative method; phylogenetic generalized least squares; phylogenetic imputation
类别
资金
- NERC National Capability in Marine Modelling
- Natural Environment Research Council [pml010010, NE/L003066/1] Funding Source: researchfish
- NERC [NE/L003066/1, pml010010] Funding Source: UKRI
Over the past several years, phylogenetic comparative studies have increasingly approached trait evolution in a multivariate context, with a number of taxa that continues to rise dramatically. Recent methods for phylogenetic comparative studies have provided ways to incorporate measurement error and to address computational challenges. However, missing data remain a particularly common problem, in which data are unavailable for some but not all traits of interest for a given species (or individual), leaving researchers with the choice between omitting observations or utilizing imputation-based approaches. Here, we introduce an r implementation of PhyloPars, a tool for phylogenetic imputation of missing data and estimation of trait covariance across species (phylogenetic covariance) and within species (phenotypic covariance). Rphylopars provides expanded capabilities over the original PhyloPars interface including a fast linear-time algorithm, thus allowing for extremely large data sets (which were previously computationally infeasible) to be analysed in seconds or minutes rather than hours. In addition to providing fast and computationally efficient implementations, we introduce in Rphylopars methods to estimate macroevolutionary parameters under alternative evolutionary models (e.g. Early-Burst, multivariate Ornstein-Uhlenbeck). By providing fast and computationally efficient methods with flexible options for various phylogenetic comparative approaches, Rphylopars expands the possibilities for researchers to analyse large and complex data with missing observations, within-species variation and deviations from Brownian motion.
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