V2EX disjoint set

Disjoint Set

释义 Definition

不相交集合(族):指一组集合,它们两两之间没有共同元素。在计算机科学中常特指用于维护“元素分组/连通性”的数据结构与问题模型(也称 Union-Find / 并查集),支持高效的合并(union)查找所属集合(find)操作。

发音 Pronunciation (IPA)

/dsdnt st/

例句 Examples

A and B are disjoint sets because they share no elements.
集合 A 和集合 B 是不相交集合,因为它们没有任何共同元素。

The algorithm uses a disjoint set to track connectivity as edges are added to the graph.
该算法使用并查集(不相交集合结构)在向图中不断添加边时跟踪连通性。

词源 Etymology

disjoint 来自前缀 dis-(表示“分开、否定”)+ joint(“连接的、关节/接合处”),字面意思是“不连接的”。set 表示“集合”,源自法语 set(与“放置、设定”相关的词源)。合起来 disjoint set 即“互不相交的集合”,在数学与计算机科学语境中被固定化使用。

相关词 Reated Words

文学与经典著作 Literary Works

  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein;常称 CLRS)在数据结构章节中讲解 disjoint-set data structure
  • The Art of Computer Programming, Volume 1: Fundamental Algorithms(Donald E. Knuth)涉及集合、等价类与相关算法思想(与不相交集合/等价类划分紧密相关)。
  • Algorithms(Robert Sedgewick & Kevin Wayne)在图算法与动态连通性问题中使用并讲解 Union-Find / disjoint set
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