License: 
Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ISAAC.2019.44
URN: urn:nbn:de:0030-drops-115406
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2019/11540/
Bredereck, Robert ;
Heeger, Klaus ;
Knop, Dusan ;
Niedermeier, Rolf
Parameterized Complexity of Stable Roommates with Ties and Incomplete Lists Through the Lens of Graph Parameters
Abstract
We continue and extend previous work on the parameterized complexity analysis of the NP-hard Stable Roommates with Ties and Incomplete Lists problem, thereby strengthening earlier results both on the side of parameterized hardness as well as on the side of fixed-parameter tractability. Other than for its famous sister problem Stable Marriage which focuses on a bipartite scenario, Stable Roommates with Incomplete Lists allows for arbitrary acceptability graphs whose edges specify the possible matchings of each two agents (agents are represented by graph vertices). Herein, incomplete lists and ties reflect the fact that in realistic application scenarios the agents cannot bring all other agents into a linear order. Among our main contributions is to show that it is W[1]-hard to compute a maximum-cardinality stable matching for acceptability graphs of bounded treedepth, bounded tree-cut width, and bounded feedback vertex number (these are each time the respective parameters). However, if we "only" ask for perfect stable matchings or the mere existence of a stable matching, then we obtain fixed-parameter tractability with respect to tree-cut width but not with respect to treedepth. On the positive side, we also provide fixed-parameter tractability results for the parameter feedback edge set number.
BibTeX - Entry
@InProceedings{bredereck_et_al:LIPIcs:2019:11540,
author = {Robert Bredereck and Klaus Heeger and Dusan Knop and Rolf Niedermeier},
title = {{Parameterized Complexity of Stable Roommates with Ties and Incomplete Lists Through the Lens of Graph Parameters}},
booktitle = {30th International Symposium on Algorithms and Computation (ISAAC 2019)},
pages = {44:1--44:14},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-130-6},
ISSN = {1868-8969},
year = {2019},
volume = {149},
editor = {Pinyan Lu and Guochuan Zhang},
publisher = {Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/opus/volltexte/2019/11540},
URN = {urn:nbn:de:0030-drops-115406},
doi = {10.4230/LIPIcs.ISAAC.2019.44},
annote = {Keywords: Stable matching, acceptability graph, fixed-parameter tractability, W[1]-hardness, treewidth, treedepth, tree-cut width, feedback set numbers}
}
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Keywords: |
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Stable matching, acceptability graph, fixed-parameter tractability, W[1]-hardness, treewidth, treedepth, tree-cut width, feedback set numbers |
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Collection: |
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30th International Symposium on Algorithms and Computation (ISAAC 2019) |
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Issue Date: |
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2019 |
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Date of publication: |
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28.11.2019 |
