V2EX monge property

Monge Property

释义 Definition

Monge 性质(Monge property)指一种常见于矩阵/代价函数中的“交叉不等式”结构:对矩阵 \(A\) 的任意 \(i \[ A_{i j}+A_{k \ell}\ \le\ A_{i \ell}+A_{k j}. \] 满足该性质的矩阵常称为 Monge array(Monge 矩阵)。它在动态规划、运输/分配问题、最短路与某些优化算法中很重要,因为能带来更快的算法(例如利用单调性/分治优化)。

发音 Pronunciation (IPA)

/mn prprti/

例句 Examples

The cost matrix satisfies the Monge property.
这个成本矩阵满足 Monge 性质。

Because the distance table has the Monge property, we can speed up the dynamic programming using divide-and-conquer optimization.
由于距离表具有 Monge 性质,我们可以用分治优化来加速动态规划。

词源 Etymology

Monge 来自法国数学家 Gaspard Monge(加斯帕尔蒙日)的姓氏。许多以他命名的数学概念(如 Monge 阵、Monge-Ampère 方程)都与几何、优化与偏微分方程等领域相关;“Monge property”在算法与组合优化中用于描述一种有利的代价结构。

相关 Related Words

文学与著作 Literary Works

  • Algorithm Design(Jon Kleinberg, va Tardos)在算法设计语境中讨论 Monge 数组/相关优化技巧。
  • Combinatorial Optimization: Polyhedra and Efficiency(Alexander Schrijver)组合优化中涉及 Monge 结构与相关问题。
  • Integer and Combinatorial Optimization(George L. Nemhauser, Laurence A. Wolsey)优化与整数规划背景下提及具有特殊结构的代价矩阵(含 Monge 类)。
  • The MongeAmpère Equation(Cédric Villani 等相关著作/讲义体系)虽侧重 PDE,但展示“Monge”命名传统与数学脉络。
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