Sciweavers

736 search results - page 29 / 148
» Approximating the Number of Network Motifs
Sort
View
EURONGI
2005
Springer
15 years 3 months ago
A Low Computation Cost Algorithm to Solve Cellular Systems with Retrials Accurately
Abstract. This paper proposes an approximate methodology for solving Markov models that compete for limited resources and retry when access fails, like those arising in mobile cell...
Maria José Doménech-Benlloch, Jos&ea...
MOBIHOC
2002
ACM
15 years 9 months ago
Message-optimal connected dominating sets in mobile ad hoc networks
A connected dominating set (CDS) for a graph G(V, E) is a subset V of V , such that each node in V - V is adjacent to some node in V , and V induces a connected subgraph. A CDS ha...
Khaled M. Alzoubi, Peng-Jun Wan, Ophir Frieder
JCO
2006
103views more  JCO 2006»
14 years 9 months ago
On optimal placement of relay nodes for reliable connectivity in wireless sensor networks
The paper addresses the relay node placement problem in two-tiered wireless sensor networks. Given a set of sensor nodes in Euclidean plane, our objective is to place minimum numbe...
Hai Liu, Peng-Jun Wan, Xiaohua Jia
ALGORITHMICA
1998
94views more  ALGORITHMICA 1998»
14 years 9 months ago
A Fully Dynamic Approximation Scheme for Shortest Paths in Planar Graphs
In this paper we give a fully dynamic approximation scheme for maintaining all-pairs shortest paths in planar networks. Given an error parameter ε such that 0 < ε, our algorit...
Philip N. Klein, Sairam Subramanian
SODA
2008
ACM
135views Algorithms» more  SODA 2008»
14 years 11 months ago
Improved algorithms for orienteering and related problems
In this paper we consider the orienteering problem in undirected and directed graphs and obtain improved approximation algorithms. The point to point-orienteering-problem is the f...
Chandra Chekuri, Nitish Korula, Martin Pál