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TWC
2008
109views more  TWC 2008»
14 years 11 months ago
Service Time Approximation in IEEE 802.11 Single-Hop Ad Hoc Networks
Abstract-- This paper investigates the near-memoryless behavior of the service time for IEEE 802.11 saturated single-hop ad hoc networks. We show that the number of packets success...
Atef Abdrabou, Weihua Zhuang
STOC
2005
ACM
146views Algorithms» more  STOC 2005»
16 years 4 days ago
Approximation algorithms for combinatorial auctions with complement-free bidders
We exhibit three approximation algorithms for the allocation problem in combinatorial auctions with complement free bidders. The running time of these algorithms is polynomial in ...
Shahar Dobzinski, Noam Nisan, Michael Schapira
PDCAT
2005
Springer
15 years 5 months ago
Approximating Spanning Trees with Inner Nodes Cost
We consider the practical NP-complete problem of finding a minimum weight spanning tree with both edge weights and inner nodes weights. We present two polynomial time algorithms ...
Rudolf Fleischer, Qi Ge, Jian Li, Shijun Tian, Hai...
CISS
2008
IEEE
15 years 6 months ago
On sparse representations of linear operators and the approximation of matrix products
—Thus far, sparse representations have been exploited largely in the context of robustly estimating functions in a noisy environment from a few measurements. In this context, the...
Mohamed-Ali Belabbas, Patrick J. Wolfe
FSTTCS
2003
Springer
15 years 5 months ago
Distance-Preserving Approximations of Polygonal Paths
Given a polygonal path P with vertices p1, p2, . . . , pn and a real number t ≥ 1, a path Q = (pi1 , pi2 , . . . , pik ) is a t-distance-preserving approximation of P if 1 = i1 &...
Joachim Gudmundsson, Giri Narasimhan, Michiel H. M...