An algorithm for finding a representation of a subtree distance
An algorithm for finding a representation of a subtree distance
复制标题
一种查找子树距离表示的算法
DOI:
10.1007/s10878-017-0145-x
复制
发表时间:
2018
影响因子:
1
通讯作者:
Sato Koki
中科院分区:
文献类型:
--
作者:
Ando Kazutoshi;Sato Koki
Generalizing the concept of tree metric, Hirai (Ann Combinatorics 10:111–128, 2006) introduced the concept of subtree distance. A nonnegative-valued mappingis called a subtree distance if there exist a weighted treeTand a familyof subtrees ofTindexed by the elements inXsuch that, whereis the distance betweenandinT. Hirai (2006) provided a characterization of subtree distances that corresponds to Buneman’s (J Comb Theory, Series B 17:48–50, 1974) four-point condition for tree metrics. Using this characterization, we can decide whether or not a given mapping is a subtree distance in Otime. In this paper, we show an Otime algorithm that finds a representation of a given subtree distance. This results in an Otime algorithm for deciding whether a given mapping is a subtree distance.