Sciweavers

370 search results - page 45 / 74
» Improved Approximation Algorithms for Connected Sensor Cover
Sort
View
COCOON
2008
Springer
14 years 11 months ago
Approximating the Generalized Capacitated Tree-Routing Problem
In this paper, we introduce the generalized capacitated tree-routing problem (GCTR), which is described as follows. Given a connected graph G = (V, E) with a sink s V and a set M...
Ehab Morsy, Hiroshi Nagamochi
CIAC
2006
Springer
106views Algorithms» more  CIAC 2006»
15 years 1 months ago
On the Hardness of Range Assignment Problems
We investigate the computational hardness of the Connectivity, the Strong Connectivity and the Broadcast type of Range Assignment Problems in R2 and R3. We present new reductions ...
Bernhard Fuchs
IWDC
2005
Springer
138views Communications» more  IWDC 2005»
15 years 3 months ago
Hierarchical Routing in Sensor Networks Using k-Dominating Sets
For a connected graph, representing a sensor network, distributed algorithms for the Set Covering Problem can be employed to construct reasonably small subsets of the nodes, calle...
Michael Q. Rieck, Subhankar Dhar
COMPGEOM
2006
ACM
15 years 3 months ago
Minimum-cost coverage of point sets by disks
We consider a class of geometric facility location problems in which the goal is to determine a set X of disks given by their centers (tj) and radii (rj) that cover a given set of...
Helmut Alt, Esther M. Arkin, Hervé Brö...
INFOCOM
2003
IEEE
15 years 3 months ago
Optimal Partition of QoS Requirements for Many-to-Many Connections
— We study problems related to supporting multicast connections with Quality of Service (QoS) requirements. We investigate the problem of optimal resource allocation in the conte...
Dean H. Lorenz, Ariel Orda, Danny Raz