Search Results for author: Steven N. Evans

Found 5 papers, 2 papers with code

Mean-field interacting multi-type birth-death processes with a view to applications in phylodynamics

1 code implementation12 Jul 2023 William S. DeWitt, Steven N. Evans, Ella Hiesmayr, Sebastian Hummel

Here, we introduce a multi-type birth-death process in mean-field interaction with an ensemble of replicas of the focal process.

Probability Populations and Evolution

Progress on Constructing Phylogenetic Networks for Languages

no code implementations9 Jun 2023 Tandy Warnow, Steven N. Evans, Luay Nakhleh

In 2006, Warnow, Evans, Ringe, and Nakhleh proposed a stochastic model (hereafter, the WERN 2006 model) of multi-state linguistic character evolution that allowed for homoplasy and borrowing.

Limit Theorems for Fréchet Mean Sets

no code implementations23 Dec 2020 Steven N. Evans, Adam Q. Jaffe

For $1\le p \le \infty$, the Fr\'echet $p$-mean of a probability measure on a metric space is an important notion of central tendency that generalizes the usual notions in the real line of mean ($p=2$) and median ($p=1$).

Probability Statistics Theory Statistics Theory 60F15, 51F99, 54C60

Representing smooth functions as compositions of near-identity functions with implications for deep network optimization

no code implementations13 Apr 2018 Peter L. Bartlett, Steven N. Evans, Philip M. Long

This implies that $h$ can be represented to any accuracy by a deep residual network whose nonlinear layers compute functions with a small Lipschitz constant.

The phylogenetic Kantorovich-Rubinstein metric for environmental sequence samples

1 code implementation11 May 2010 Steven N. Evans, Frederick A. Matsen

Using modern technology, it is now common to survey microbial communities by sequencing DNA or RNA extracted in bulk from a given environment.

Populations and Evolution

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