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» From Path Graphs to Directed Path Graphs
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138
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COMGEO
2007
ACM
15 years 2 months ago
Geometric spanners with applications in wireless networks
In this paper we investigate the relations between spanners, weak spanners, and power spanners in RD for any dimension D and apply our results to topology control in wireless netw...
Christian Schindelhauer, Klaus Volbert, Martin Zie...
115
Voted
SIAMDM
2008
143views more  SIAMDM 2008»
15 years 2 months ago
Coloring Bull-Free Perfectly Contractile Graphs
We consider the class of graphs that contain no bull, no odd hole, and no antihole of length at least five. We present a new algorithm that colors optimally the vertices of every g...
Benjamin Lévêque, Frédé...
122
Voted
SIAMDM
2008
101views more  SIAMDM 2008»
15 years 2 months ago
On Planar Quasi-Parity Graphs
A graph G is strict quasi parity (SQP) if every induced subgraph of G that is not a clique contains a pair of vertices with no odd chordless path between them (an even pair). Houga...
Cláudia Linhares Sales, Frédé...
127
Voted
JDA
2010
122views more  JDA 2010»
14 years 9 months ago
Subexponential parameterized algorithms for degree-constrained subgraph problems on planar graphs
We present subexponential parameterized algorithms on planar graphs for a family of problems of the following shape: given a graph, find a connected (induced) subgraph with bounde...
Ignasi Sau, Dimitrios M. Thilikos
143
Voted
EDM
2008
113views Data Mining» more  EDM 2008»
15 years 4 months ago
Mining and Visualizing Visited Trails in Web-Based Educational Systems
A data mining and visualization tool for the discovery of student trails in web-based educational systems is presented and described. The tool uses graphs to visualize results, all...
Cristóbal Romero, Sergio Gutiérrez S...