ultrametric
名词 n.
形容词 adj.
英文释义
名词 n.
-
A metric whose triangle inequality has the stronger form d(x,z)< max d(x,y),d(y,z).
— This relation between hierarchical clusterings and ultrametrics is one-to-one; if, that is, we agree not to distinguish ultrametrics that are (strictly) monotonically related to each other. That is, there is one and only one ultrametric for each hierarchical tree structure. Thus there is an isomorphism between ultrametrics and hierarchical tree structures. In this sense the two can be identified.
形容词 adj.
- Describing a metric whose triangle inequality has the stronger form d(x,z)< max d(x,y),d(y,z).
- Describing a phylogeny in which every tip is the same distance from the root.
词形变化
词汇关系
上位词
相关词
词源
词源 1
From ultra- + metric.
词源 2
From ultra- + metric.
0 次浏览
数据来源: Wiktionary