arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.4650math.PRmath.STq-bio.PEstat.TH
收藏

扩散过程和聚结树

Diffusion processes and coalescent trees

Robert C. Griffiths, Dario Spano`

摘要:

谨以此文献给约翰·金曼爵士70岁生日。在现代数学群体遗传学中,一个基因群体的祖先历史可以用约翰·金曼的结合树来描述。经典和现代的方法模型基因频率的扩散过程。本文从分析和概率的角度讨论了聚结过程与扩散过程的对偶性。Bochner(1954)和Gasper(1972)对具有Beta平稳分布和雅可比多项式特征函数的过程的特征化很感兴趣。我们将讨论与赖特-费舍尔扩散和这些过程的特征的连接。从属Wright-Fisher扩散属于这种类型。逆高斯从属子在从属Wright-Fisher扩散中是一个有趣而重要的概念,它与正交多项式理论中的Jacobi泊松核有关。一个相关的时间从属森林的非突变边缘的金曼合并是新颖的。

英文摘要:

We dedicate this paper to Sir John Kingman on his 70th Birthday. In modern mathematical population genetics the ancestral history of a population of genes back in time is described by John Kingman's coalescent tree. Classical and modern approaches model gene frequencies by diffusion processes. This paper, which is partly a review, discusses how coalescent processes are dual to diffusion processes in an analytic and probabilistic sense. Bochner (1954) and Gasper (1972) were interested in characterizations of processes with Beta stationary distributions and Jacobi polynomial eigenfunctions. We discuss the connection with Wright--Fisher diffusions and the characterization of these processes. Subordinated Wright--Fisher diffusions are of this type. An Inverse Gaussian subordinator is interesting and important in subordinated Wright--Fisher diffusions and is related to the Jacobi Poisson Kernel in orthogonal polynomial theory. A related time-subordinated forest of non-mutant edges in the Kingman coalescent is novel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑