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» The Complexity of Graph Connectivity
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DAM
2007
94views more  DAM 2007»
13 years 10 months ago
The harmonious coloring problem is NP-complete for interval and permutation graphs
In this paper, we prove that the harmonious coloring problem is NP-complete for connected interval and permutation graphs. Given a simple graph G, a harmonious coloring of G is a ...
Katerina Asdre, Kyriaki Ioannidou, Stavros D. Niko...
SODA
2010
ACM
178views Algorithms» more  SODA 2010»
14 years 8 months ago
Tree Embeddings for Two-Edge-Connected Network Design
The group Steiner problem is a classical network design problem where we are given a graph and a collection of groups of vertices, and want to build a min-cost subgraph that conne...
Anupam Gupta, Ravishankar Krishnaswamy, R. Ravi
ISCC
2009
IEEE
254views Communications» more  ISCC 2009»
14 years 5 months ago
Monitoring connectivity in wireless sensor networks
It is important to have continuous connectivity in a wireless sensor network after it is deployed in a hostile environment. However, such networks are constrained by the low usert...
Benahmed Khelifa, Hafid Haffaf, Madjid Merabti, Da...
INFOCOM
2007
IEEE
14 years 5 months ago
Detecting Wormhole Attacks in Wireless Networks Using Connectivity Information
Abstract—We propose a novel algorithm for detecting wormhole attacks in wireless multi-hop networks. The algorithm uses only connectivity information to look for forbidden substr...
Ritesh Maheshwari, Jie Gao, Samir R. Das
ENVSOFT
2006
76views more  ENVSOFT 2006»
13 years 10 months ago
LQGraph: A software package for optimizing connectivity in conservation planning
LQGraph implements methods for optimizing the connectivity of sites administered to protect biodiversity (a conservation area network). The methods are suitable for existing prote...
Trevon Fuller, Sahotra Sarkar