,
Claire Hanen
,
Alix Munier-Kordon
Creative Commons Attribution 4.0 International license
In this paper we consider the parameterized complexity of two versions of a parallel machine scheduling problem with precedence delays, unit processing times and time windows. In the first version - with exact delays - we assume that the delay between two jobs must be exactly respected, whereas in the second version - with minimum delays - the delay between two jobs is a lower bound on the time between them. Two parameters are considered for this analysis: the pathwidth of the interval graph induced by the time windows and the maximum precedence delay value. We prove that our problems are para-NP-complete with respect to any of the two parameters and fixed-parameter tractable parameterized by the pair of parameters.
@InProceedings{mallem_et_al:LIPIcs.IPEC.2022.21,
author = {Mallem, Maher and Hanen, Claire and Munier-Kordon, Alix},
title = {{Parameterized Complexity of a Parallel Machine Scheduling Problem}},
booktitle = {17th International Symposium on Parameterized and Exact Computation (IPEC 2022)},
pages = {21:1--21:21},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-260-0},
ISSN = {1868-8969},
year = {2022},
volume = {249},
editor = {Dell, Holger and Nederlof, Jesper},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.IPEC.2022.21},
URN = {urn:nbn:de:0030-drops-173774},
doi = {10.4230/LIPIcs.IPEC.2022.21},
annote = {Keywords: parameterized complexity, scheduling, precedence delays, pathwidth, chains, parallel processors}
}