Sciweavers

92 search results - page 4 / 19
» Towards a Study of Low-Complexity Graphs
Sort
View
CORR
2008
Springer
131views Education» more  CORR 2008»
13 years 7 months ago
Towards a More Accurate Carrier Sensing Model for CSMA Wireless Networks
Abstract--In the majority of studies on CSMA wireless networks, a contention graph is used to model the carrier sensing relationships among links. This is a 0-1 model in which two ...
Caihong Kai, Soung Chang Liew
SASO
2008
IEEE
14 years 2 months ago
Towards Desynchronization of Multi-hop Topologies
In this paper we study desynchronization, a closelyrelated primitive to graph coloring. A valid graph coloring is an assignment of colors to nodes such that no node’s color is t...
Julius Degesys, Radhika Nagpal
MP
2010
149views more  MP 2010»
13 years 6 months ago
Copositive programming motivated bounds on the stability and the chromatic numbers
The Lov´asz theta number of a graph G can be viewed as a semidefinite programming relaxation of the stability number of G. It has recently been shown that a copositive strengthe...
Igor Dukanovic, Franz Rendl
STACS
2010
Springer
14 years 2 months ago
Large-Girth Roots of Graphs
We study the problem of recognizing graph powers and computing roots of graphs. We provide a polynomial time recognition algorithm for r-th powers of graphs of girth at least 2r + ...
Anna Adamaszek, Michal Adamaszek
EDBT
2012
ACM
228views Database» more  EDBT 2012»
11 years 10 months ago
Towards scalable data integration under constraints
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
George Konstantinidis, José Luis Ambite