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- W2949253746 abstract "Binary trait data record the presence or absence of distinguishing traits in individuals. We treat the problem of estimating ancestral trees with time depth from binary trait data. Simple analysis of such data is problematic. Each homology class of traits has a unique birth event on the tree, and the birth event of a trait visible at the leaves is biased towards the leaves. We propose a model-based analysis of such data, and present an MCMC algorithm that can sample from the resulting posterior distribution. Our model is based on using a birth-death process for the evolution of the elements of sets of traits. Our analysis correctly accounts for the removal of singleton traits, which are commonly discarded in real data sets. We illustrate Bayesian inference for two binary-trait data sets which arise in historical linguistics. The Bayesian approach allows for the incorporation of information from ancestral languages. The marginal prior distribution of the root time is uniform. We present a thorough analysis of the robustness of our results to model mispecification, through analysis of predictive distributions for external data, and fitting data simulated under alternative observation models. The reconstructed ages of tree nodes are relatively robust, whilst posterior probabilities for topology are not reliable." @default.
- W2949253746 created "2019-06-27" @default.
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- W2949253746 date "2007-11-12" @default.
- W2949253746 modified "2023-09-27" @default.
- W2949253746 title "Dated ancestral trees from binary trait data and its application to the diversification of languages" @default.
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