Sciweavers

WG
2007
Springer
14 years 1 months ago
Proper Helly Circular-Arc Graphs
A circular-arc model M = (C, A) is a circle C together with a collection A of arcs of C. If no arc is contained in any other then M is a proper circular-arc model, if every arc has...
Min Chih Lin, Francisco J. Soulignac, Jayme Luiz S...
WG
2007
Springer
14 years 1 months ago
NLC-2 Graph Recognition and Isomorphism
NLC-width is a variant of clique-width with many application in graph algorithmic. This paper is devoted to graphs of NLC-width two. After giving new structural properties of the ...
Vincent Limouzy, Fabien de Montgolfier, Michaë...
WG
2007
Springer
14 years 1 months ago
Lower Bounds for Three Algorithms for the Transversal Hypergraph Generation
Abstract. The computation of all minimal transversals of a given hypergraph in output-polynomial time is a long standing open question known as the transversal hypergraph generatio...
Matthias Hagen
WG
2007
Springer
14 years 1 months ago
On Restrictions of Balanced 2-Interval Graphs
Philippe Gambette, Stéphane Vialette
WG
2007
Springer
14 years 1 months ago
Complexity and Approximation Results for the Connected Vertex Cover Problem
We study a variation of the vertex cover problem where it is required that the graph induced by the vertex cover is connected. We prove that this problem is polynomial in chordal g...
Bruno Escoffier, Laurent Gourvès, Jé...
WG
2007
Springer
14 years 1 months ago
The 3-Steiner Root Problem
Maw-Shang Chang, Ming-Tat Ko
WG
2007
Springer
14 years 1 months ago
Mixing 3-Colourings in Bipartite Graphs
For a 3-colourable graph G, the 3-colour graph of G, denoted C3(G), is the graph with node set the proper vertex 3-colourings of G, and two nodes adjacent whenever the correspondi...
Luis Cereceda, Jan van den Heuvel, Matthew Johnson
WG
2007
Springer
14 years 1 months ago
On Finding Graph Clusterings with Maximum Modularity
Modularity is a recently introduced quality measure for graph clusterings. It has immediately received considerable attention in several disciplines, and in particular in the compl...
Ulrik Brandes, Daniel Delling, Marco Gaertler, Rob...