Lateral transfer in Stochastic Dollo models
Lateral transfer, a process whereby species exchange evolutionary traits through non-ancestral relationships, is a frequent source of model misspecification in phylogenetic inference. Lateral transfer obscures the phylogenetic signal in the data as the histories of affected traits are mosaics of the overall phylogeny. We control for the effect of lateral transfer in a Stochastic Dollo model and a Bayesian setting. Our likelihood is highly intractable as the parameters are the solution of a sequence of large systems of differential equations representing the expected evolution of traits along a tree. We illustrate our method on a data set of lexical traits in Eastern Polynesian languages and obtain an improved fit over the corresponding model without lateral transfer..
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Preprint| Erscheinungsjahr: |
2016 |
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| Erschienen: |
2016 |
| Enthalten in: |
arXiv.org - (2016) vom: 28. Jan. Zur Gesamtaufnahme - year:2016 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Kelly, Luke J. [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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XAR006644880 |
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| 520 | |a Lateral transfer, a process whereby species exchange evolutionary traits through non-ancestral relationships, is a frequent source of model misspecification in phylogenetic inference. Lateral transfer obscures the phylogenetic signal in the data as the histories of affected traits are mosaics of the overall phylogeny. We control for the effect of lateral transfer in a Stochastic Dollo model and a Bayesian setting. Our likelihood is highly intractable as the parameters are the solution of a sequence of large systems of differential equations representing the expected evolution of traits along a tree. We illustrate our method on a data set of lexical traits in Eastern Polynesian languages and obtain an improved fit over the corresponding model without lateral transfer. | ||
| 700 | 1 | |a Kelly, Luke J. |e verfasserin |4 aut | |
| 700 | 1 | |a Nicholls, Geoff K. |e verfasserin |4 aut | |
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