Efficient estimation of the accuracy of the maximum likelihood method for ancestral state reconstruction

被引:6
|
作者
Ma, Bin [2 ]
Zhang, Louxin [1 ]
机构
[1] Natl Univ Singapore, Dept Math, Singapore 117548, Singapore
[2] Univ Waterloo, David R Cheriton Sch Comp Sci, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Ancestral state reconstruction; Reconstruction accuracy; Maximum likelihood method; Polynomial time approximation; TREE; CHARACTERS; GENOMES;
D O I
10.1007/s10878-009-9261-6
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The marginal maximum likelihood method is a widely-used method for ancestral state reconstruction. Given an evolution model (a phylogeny tree and the edge mutation rates) and the extant states (states on leaves), the method computes efficiently the most likely ancestral state on the root. However, when the extant states are randomly generated by using the evolutionary model, it is unknown how to efficiently calculate the expected reconstruction accuracy of the marginal maximum likelihood method. In this paper, a fully polynomial time approximation scheme (FPTAS) is presented for the calculation.
引用
收藏
页码:409 / 422
页数:14
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