Approximability and parameterized complexity of multicover by c-intervals

René Van Bevern, Jiehua Chen, Falk Hüffner, Stefan Kratsch, Nimrod Talmon, Gerhard J. Woeginger

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A c-interval is the disjoint union of c intervals over N. The c-Interval Multicover problem is the special case of Set Multicover where all sets available for covering are c-intervals. We strengthen known APX-hardness results for c-Interval Multicover, show W[1]-hardness when parameterized by the solution size, and present fixed-parameter algorithms for alternative parameterizations.

Original languageEnglish
Pages (from-to)744-749
Number of pages6
JournalInformation Processing Letters
Issue number10
Publication statusPublished - 1 Oct 2015
Externally publishedYes


  • Algorithms
  • APX-hardness
  • Fixed-parameter tractability
  • NP-hard problems
  • Set cover
  • W[1]-hardness


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