标题： 最小生成树结构的定量确定：使用脉冲星树分析新类型脉冲星的出现 显示英文标题

标题： Quantitative determination of minimum spanning tree structures: Using the pulsar tree for analyzing the appearance of new classes of pulsars

摘要： 在本工作中，我们引入了一种定量方法来定义最小生成树（MST）的主要主干和显著分支。我们将它应用于脉冲星树，即基于脉冲星固有属性的欧几里得距离构建的脉冲星种群的MST。我们的方法利用了介数中心性估计器以及非参数检验来确定所定义分支的独特特性。借助这些概念，我们研究了脉冲星种群随时间的演化，并分析了如何判断在新数据、未来调查或脉冲星目录的新版本中是否出现新的脉冲星类别。 显示英文摘要

摘要： In this work, we introduce a quantitative methodology to define what is the main trunk and what are the significant branches of a minimum spanning tree (MST). We apply it to the pulsar tree, i.e. the MST of the pulsar population constructed upon a Euclidean distance over the pulsar's intrinsic properties. Our method makes use of the betweenness centrality estimator, as well as of non-parametric tests to establish the distinct character of the defined branches. Armed with these concepts, we study how the pulsar population has evolved throughout history, and analyze how to judge whether a new class of pulsars appears in new data, future surveys, or new incarnations of pulsar catalogs.