We consider the problem of finding the monotone eccentricity of a vertex v of a polytope. This is the largest number of pivots through the graph of the polytope required to reach an optimal vertex starting from v. In particular, we study a polytope introduced by Frieze and Teng [3] derived from the exact partition problem. This polytope is simple and nearly 0/1, with at most two fractional components per vertex. We show that Frieze and Teng’s result on the complexity of computing lower bounds on diameters of exact partition polytopes can be extended to show that computing monotone eccentricity is also NP-Hard, and in fact \(\textsf {D}^\textsf {P}\) -hard, even on simple polytopes.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

The Hardness of Monotone Eccentricity on Polytopes

  • Krishna Narayanan,
  • Tamon Stephen

摘要

We consider the problem of finding the monotone eccentricity of a vertex v of a polytope. This is the largest number of pivots through the graph of the polytope required to reach an optimal vertex starting from v. In particular, we study a polytope introduced by Frieze and Teng [3] derived from the exact partition problem. This polytope is simple and nearly 0/1, with at most two fractional components per vertex. We show that Frieze and Teng’s result on the complexity of computing lower bounds on diameters of exact partition polytopes can be extended to show that computing monotone eccentricity is also NP-Hard, and in fact \(\textsf {D}^\textsf {P}\) -hard, even on simple polytopes.