96 search results - page 12 / 20 » Factoring cardinal product graphs in polynomial time |
STOC
2010
ACM
15 years 9 months ago
2010
ACM
We consider the problem of maintaining a large matching or a small vertex cover in a dynamically changing graph. Each update to the graph is either an edge deletion or an edge ins...
104
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FOCS
2004
IEEE
15 years 3 months ago
2004
IEEE
Let p > 1 be any fixed real. We show that assuming NP RP, there is no polynomial time algorithm that approximates the Shortest Vector Problem (SVP) in p norm within a constant ...
102
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ESA
2004
Springer
15 years 5 months ago
2004
Springer
Edge contraction is shown to be a useful mechanism to improve lower bound heuristics for treewidth. A successful lower bound for treewidth is the degeneracy: the maximum over all ...
SIAMDM
2000
14 years 11 months ago
2000
Abstract. We describe fully polynomial time approximation schemes for various multicommodity flow problems in graphs with m edges and n vertices. We present the first approximation...
129
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SWAT
2010
Springer
15 years 4 months ago
2010
Springer
We consider the problem of partitioning the set of vertices of a given unit disk graph (UDG) into a minimum number of cliques. The problem is NP-hard and various constant factor a...