Abstract
We study the problem of covering a set of segments on a line with the minimum number of unit-length intervals, where an interval covers a segment if at least one of the two endpoints of the segment falls in the unit interval. We also study several variants of this problem. We show that the restrictions of the aforementioned problems to the set of instances in which all the segments have the same length are NP-hard. This result implies several NP-hardness results in the literature for variants and generalizations of the problems under consideration. We then study the parameterized complexity of the aforementioned problems. We provide tight results for most of them by showing that they are fixed-parameter tractable for the restrictions in which all the segments have the same length, and are W[1]-complete otherwise.
Original language | English |
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Pages | 13:1-13:17 |
Number of pages | 17 |
DOIs | |
Publication status | Published - 27 Feb 2020 |
Event | The 37th International Symposium on Theoretical Aspects of Computer Science - Montpellier, France Duration: 10 Mar 2020 → 13 Mar 2020 https://stacs2020.sciencesconf.org/ |
Conference
Conference | The 37th International Symposium on Theoretical Aspects of Computer Science |
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Abbreviated title | STACS 2020 |
Country/Territory | France |
City | Montpellier |
Period | 10/03/20 → 13/03/20 |
Internet address |