标题： 使用祖先特征定义系统发生网络 显示英文标题

标题： Defining phylogenetic networks using ancestral profiles

摘要： 根系系统发生网络在存在网状进化过程时，比系统发生树更能完整地表示物种之间的祖先关系。 重建系统发生网络的一种方法是考虑其“祖先概要”（每个祖先顶点到每个叶节点的路径数量）。 一般来说，此信息并不能唯一确定底层的系统发生网络。 一篇最近的论文提出了一类新的系统发生网络，称为“果园网络”，并声称这种唯一性成立。 在这里，我们表明，为了使原始的唯一性声明成立，需要对网络施加额外的限制，即“无堆叠”。 另一方面，如果取消这个额外的无堆叠限制，我们建立了一个替代结果；即，在高入度顶点的分辨率方面，果园网络类中存在唯一性。 显示英文摘要

摘要： Rooted phylogenetic networks provide a more complete representation of the ancestral relationship between species than phylogenetic trees when reticulate evolutionary processes are at play. One way to reconstruct a phylogenetic network is to consider its `ancestral profile' (the number of paths from each ancestral vertex to each leaf). In general, this information does not uniquely determine the underlying phylogenetic network. A recent paper considered a new class of phylogenetic networks called `orchard networks' where this uniqueness was claimed to hold. Here we show that an additional restriction on the network, that of being `stack-free', is required in order for the original uniqueness claim to hold. On the other hand, if the additional stack-free restriction is lifted, we establish an alternative result; namely, there is uniqueness within the class of orchard networks up to the resolution of vertices of high in-degree.