On the complexity of sequentially lifting cover inequalities for the knapsack polytope

Wei Kun Chen, Yu Hong Dai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The well-known sequentially lifted cover inequality is widely employed in solving mixed integer programs. However, it is still an open question whether a sequentially lifted cover inequality can be computed in polynomial time for a given minimal cover (Gu et al. (1999)). We show that this problem is NP-hard, thus giving a negative answer to the question.

Original languageEnglish
Pages (from-to)211-220
Number of pages10
JournalScience China Mathematics
Volume64
Issue number1
DOIs
Publication statusPublished - Jan 2021

Keywords

  • 90C11
  • 90C27
  • complexity
  • integer programming
  • lifting problem
  • sequentially lifted cover inequality

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