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» Algorithms for Proximity Problems on Colored Point Sets
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IPPS
2008
IEEE
14 years 2 months ago
Sweep coverage with mobile sensors
Many efforts have been made for addressing coverage problems in sensor networks. They fall into two categories, full coverage and barrier coverage, featured as static coverage. In...
Wei-Fang Cheng, Mo Li, Kebin Liu, Yunhao Liu, Xian...
ICANNGA
2007
Springer
191views Algorithms» more  ICANNGA 2007»
14 years 2 months ago
Novel Multi-layer Non-negative Tensor Factorization with Sparsity Constraints
In this paper we present a new method of 3D non-negative tensor factorization (NTF) that is robust in the presence of noise and has many potential applications, including multi-way...
Andrzej Cichocki, Rafal Zdunek, Seungjin Choi, Rob...
FOCS
2008
IEEE
14 years 2 months ago
Beating the Random Ordering is Hard: Inapproximability of Maximum Acyclic Subgraph
We prove that approximating the Max Acyclic Subgraph problem within a factor better than 1/2 is Unique-Games hard. Specifically, for every constant ε > 0 the following holds:...
Venkatesan Guruswami, Rajsekar Manokaran, Prasad R...
KDD
2007
ACM
159views Data Mining» more  KDD 2007»
14 years 9 months ago
Domain-constrained semi-supervised mining of tracking models in sensor networks
Accurate localization of mobile objects is a major research problem in sensor networks and an important data mining application. Specifically, the localization problem is to deter...
Rong Pan, Junhui Zhao, Vincent Wenchen Zheng, Jeff...
INFOCOM
2006
IEEE
14 years 2 months ago
Broadcasting in Sensor Networks: The Role of Local Information
Abstract— Flooding based strategies are conventionally employed to perform querying and broadcasting in sensor networks. These schemes have low hop-delays of Θ( 1 M(n) ) to reac...
Sundar Subramanian, Sanjay Shakkottai, Ari Arapost...