V2EX min cut

Min Cut

定义 Definition

min cut(最小割):在图论中,指把一个网络/图分成两个部分(通常包含源点 s 和汇点 t 分别在不同部分)所需要“切断”的边的最小总容量/最小代价。常与 max flow(最大流)一起出现(最大流最小割定理)。在更广义语境中也可指“最小切割”这一类优化问题。

发音 Pronunciation (IPA)

/mn kt/

例句 Examples

The algorithm computes the min cut in the network.
该算法会计算网络中的最小割。

By the max-flow min-cut theorem, the value of the maximum flow equals the capacity of the min cut.
根据最大流最小割定理,最大流的值等于最小割的容量。

词源 Etymology

minminimum(最小值)的缩写;cut 在图论里指把图“割开/切分”的操作或结果。合起来 min cut 就是“最小的切割(代价)”,用来描述在网络流问题中代价最小的分割方式。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein,常称 CLRS):在“最大流”章节系统讲解 min cut 与相关定理。
  • Network Flows: Theory, Algorithms, and Applications(Ahuja, Magnanti, Orlin):以网络流为核心,频繁使用 minimum cut / min cut
  • Ford, L. R. & Fulkerson, D. R. 的经典网络流研究论文与专著(20 世纪中期):奠定最大流/最小割理论框架,讨论 min cut 概念与算法。
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