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FOCS
2009
IEEE
15 years 6 months ago
Local Graph Partitions for Approximation and Testing
—We introduce a new tool for approximation and testing algorithms called partitioning oracles. We develop methods for constructing them for any class of bounded-degree graphs wit...
Avinatan Hassidim, Jonathan A. Kelner, Huy N. Nguy...
GLOBECOM
2009
IEEE
15 years 6 months ago
Optimal Resource Allocation in the OFDMA Downlink with Feedback of Buffer State Information
—With the advent of new applications, one of the primary applications supported in downlink cellular systems is streaming video. QoS for streaming video entails data transmission...
Rajiv Agarwal, John M. Cioffi
ESA
2003
Springer
189views Algorithms» more  ESA 2003»
15 years 5 months ago
On the Complexity of Approximating TSP with Neighborhoods and Related Problems
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
Shmuel Safra, Oded Schwartz
ICPPW
2002
IEEE
15 years 4 months ago
Quantitative Analysis of Transmission Power Control in Wireless Ad-hoc Networks
Abstract—In this paper, we address the issue of transmission power control in wireless ad-hoc networks. In general, it is assumed that minimum transmission power achieves the opt...
Seung-Jong Park, Raghupathy Sivakumar
IPPS
2000
IEEE
15 years 4 months ago
On Optimal Fill-Preserving Orderings of Sparse Matrices for Parallel Cholesky Factorizations
In this paper, we consider the problem of nding llpreserving ordering of a sparse symmetric and positive de nite matrix such that the reordered matrix is suitable for parallel fac...
Wen-Yang Lin, Chuen-Liang Chen