论文标题
在两个物种树模型下的分布，用于匹配基因树和物种树的根祖先配置数量
The distributions under two species-tree models of the number of root ancestral configurations for matching gene trees and species trees
论文作者
论文摘要
对于由基因树和物种树组成的一对，物种树的内部节点的祖先构型是可以存在于该节点上的不同基因谱系的集合。祖先的构型出现在固定物种树上的进化模型下的基因树概率的计算中，以及根祖先构型的枚举 - 物种树根的祖先配置 - 有助于描述这些计算的复杂性。如果基因树在拓扑中与物种树相匹配，我们研究了两个模型下每个模型下随机标记的树拓扑的根祖传构型的分布。
For a pair consisting of a gene tree and a species tree, the ancestral configurations at an internal node of the species tree are the distinct sets of gene lineages that can be present at that node. Ancestral configurations appear in computations of gene tree probabilities under evolutionary models conditional on fixed species trees, and the enumeration of root ancestral configurations -- ancestral configurations at the root of the species tree -- assists in describing the complexity of these computations. In the case that the gene tree matches the species tree in topology, we study the distribution of the number of root ancestral configurations of a random labeled tree topology under each of two models.
