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» The Complexity of the Approximation of the Bandwidth Problem
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INFOCOM
2011
IEEE
13 years 26 days ago
Construction of directional virtual backbones with minimum routing cost in wireless networks
—It is well-known that the application of directional antennas can help conserve bandwidth and energy consumption in wireless networks. Thus, to achieve efficiency in wireless n...
Ling Ding, Weili Wu, James Willson, Hongjie Du, Wo...
MOBIHOC
2008
ACM
14 years 8 months ago
Self-monitoring for sensor networks
Local monitoring is an effective mechanism for the security of wireless sensor networks (WSNs). Existing schemes assume the existence of sufficient number of active nodes to carry...
Dezun Dong, Yunhao Liu, Xiangke Liao
COMPGEOM
2008
ACM
13 years 11 months ago
Circular partitions with applications to visualization and embeddings
We introduce a hierarchical partitioning scheme of the Euclidean plane, called circular partitions. Such a partition consists of a hierarchy of convex polygons, each having small ...
Krzysztof Onak, Anastasios Sidiropoulos
INFOCOM
2009
IEEE
14 years 3 months ago
Minimizing the Cost of Mine Selection Via Sensor Networks
— In this paper, we study sensor enabled landmine networks by formulating a minimum-cost mine selection problem. The problem arises in a target defence scenario, where the object...
Changlei Liu, Guohong Cao
ISAAC
2009
Springer
147views Algorithms» more  ISAAC 2009»
14 years 3 months ago
Computing a Smallest Multi-labeled Phylogenetic Tree from Rooted Triplets
Abstract. We investigate the computational complexity of a new combinatorial problem of inferring a smallest possible multi-labeled phylogenetic tree (MUL tree) which is consistent...
Sylvain Guillemot, Jesper Jansson, Wing-Kin Sung