Abstract
We give tight algorithmic lower and upper bounds for some double-parameterized subgraph problems when the clique-width of the input graph is one of the parameters. Let G be an arbitrary input graph on n vertices with clique-width at most w. We prove the following results.
The Dense (Sparse) k -Subgraph problem, which asks whether there exists an induced subgraph of G with k vertices and at least q edges (at most q edges, respectively), can be solved in time k O(w)·n, but it cannot be solved in time 2 o(wlogk)·n O(1) unless the Exponential Time Hypothesis (ETH) fails.
The d -Regular Induced Subgraph problem, which asks whether there exists a d-regular induced subgraph of G, and the Minimum Subgraph of Minimum Degree at least d problem, which asks whether there exists a subgraph of G with k vertices and minimum degree at least d, can be solved in time d O(w)·n, but they cannot be solved in time 2 o(wlogd)·n O(1) unless ETH fails.
Original language | English |
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Title of host publication | Parameterized and Exact Computation |
Subtitle of host publication | 6th International Symposium, IPEC 2011, Saarbrücken, Germany, September 6-8, 2011. Revised Selected Papers |
Editors | Dániel Marx, Peter Rossmanith |
Place of Publication | London |
Publisher | Springer |
Pages | 207-218 |
Number of pages | 12 |
ISBN (Print) | 978-3-642-28049-8 |
DOIs | |
Publication status | Published - 2012 |
Event | 6th International Symposium on Parameterized and Exact Computation, IPEC 2011 - Saarbrücken, Germany Duration: 6 Sep 2011 → 8 Sep 2011 Conference number: 6 |
Publication series
Name | Lecture Notes in Computer Science |
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Publisher | Springer |
Volume | 7112 |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 6th International Symposium on Parameterized and Exact Computation, IPEC 2011 |
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Abbreviated title | IPEC |
Country/Territory | Germany |
City | Saarbrücken |
Period | 6/09/11 → 8/09/11 |
Keywords
- FPT
- Exponential time hypothesis
- FPT algorithm
- MSC-68R10
- MSC-05C85
- EWI-22745
- Clique-width
- IR-83471
- METIS-296438
- Dense subgraph