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» On Graph Complexity
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ICTCS
2005
Springer
14 years 1 months ago
Weighted Coloring: Further Complexity and Approximability Results
Given a vertex-weighted graph G = (V, E; w), w(v) ≥ 0 for any v ∈ V , we consider a weighted version of the coloring problem which consists in finding a partition S = (S1, . ...
Bruno Escoffier, Jérôme Monnot, Vange...
MFCS
1997
Springer
13 years 11 months ago
Resolution Proofs, Exponential Bounds, and Kolmogorov Complexity
We prove an exponential lower bound for the length of any resolution proof for the same set of clauses as the one used by Urquhart [13]. Our contribution is a significant simpli...
Uwe Schöning
WIOPT
2010
IEEE
13 years 6 months ago
K-shell decomposition for dynamic complex networks
—K-shell (or k-core) graph decomposition methods were introduced as a tool for studying the structure of large graphs. K-shell decomposition methods have been recently proposed [...
Daniele Miorandi, Francesco De Pellegrini
CIB
2005
125views more  CIB 2005»
13 years 7 months ago
An On-Line Web Visualization System with Filtering and Clustering Graph
A Web graph refers to the graph that is used to represent relationships between Web pages in cyberspace, where a node represents a URL and an edge indicates a link between two URLs...
Wei Lai, Xiaodi Huang, Ronald Wibowo, Jiro Tanaka
DAM
2000
101views more  DAM 2000»
13 years 7 months ago
The complexity of irredundant sets parameterized by size
An irredundant set of vertices V V in a graph G = (V; E) has the property that for every vertex u V ; N[V - {u}] is a proper subset of N[V ]. We investigate the parameterized co...
Rodney G. Downey, Michael R. Fellows, Venkatesh Ra...