Phylogenetic analysis using Lévy processes: finding jumps in the evolution of continuous traits.

  title={Phylogenetic analysis using L{\'e}vy processes: finding jumps in the evolution of continuous traits.},
  author={Michael J. Landis and Joshua G. Schraiber and Mason Liang},
  journal={Systematic biology},
  volume={62 2},
Gaussian processes, a class of stochastic processes including Brownian motion and the Ornstein-Uhlenbeck process, are widely used to model continuous trait evolution in statistical phylogenetics. Under such processes, observations at the tips of a phylogenetic tree have a multivariate Gaussian distribution, which may lead to suboptimal model specification under certain evolutionary conditions, as supposed in models of punctuated equilibrium or adaptive radiation. To consider non-normally… CONTINUE READING
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