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» Modular Decomposition of Hypergraphs
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COMBINATORICS
2007
87views more  COMBINATORICS 2007»
13 years 7 months ago
Bartholdi Zeta Functions for Hypergraphs
Recently, Storm [8] defined the Ihara-Selberg zeta function of a hypergraph, and gave two determinant expressions of it. We define the Bartholdi zeta function of a hypergraph, a...
Iwao Sato
TALG
2010
110views more  TALG 2010»
13 years 5 months ago
Approximating fractional hypertree width
Fractional hypertree width is a hypergraph measure similar to tree width and hypertree width. Its algorithmic importance comes from the fact that, as shown in previous work [14], ...
Dániel Marx
JCSS
2008
107views more  JCSS 2008»
13 years 7 months ago
A unified theory of structural tractability for constraint satisfaction problems
In this paper we derive a generic form of structural decomposition for the constraint satisfaction problem, which we call a guarded decomposition. We show that many existing decom...
David A. Cohen, Peter Jeavons, Marc Gyssens
PARA
1995
Springer
13 years 11 months ago
Decomposing Linear Programs for Parallel Solution
Coarse grain parallelism inherent in the solution of Linear Programming (LP) problems with block angular constraint matrices has been exploited in recent research works. However, t...
Ali Pinar, Ümit V. Çatalyürek, Ce...
ICDT
2010
ACM
137views Database» more  ICDT 2010»
13 years 6 months ago
A Greedy Algorithm for Constructing a Low-Width Generalized Hypertree Decomposition
We propose a greedy algorithm which, given a hypergraph H and a positive integer k, produces a hypertree decomposition of width less than or equal to 3k −1, or determines that H...
Kaoru Katayama, Tatsuro Okawara, Yuka Itou