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APPROX
2009
Springer
142views Algorithms» more  APPROX 2009»
14 years 1 months ago
Optimal Sherali-Adams Gaps from Pairwise Independence
Abstract. This work considers the problem of approximating fixed predicate constraint satisfaction problems (MAX k-CSP(P)). We show that if the set of assignments accepted by P co...
Konstantinos Georgiou, Avner Magen, Madhur Tulsian...
IPPS
2000
IEEE
13 years 11 months ago
Optimal All-to-All Personalized Exchange in a Class of Optical Multistage Networks
All-to-all personalized exchange is one of the most dense collective communication patterns and occurs in many important parallel computing/networking applications. In this paper,...
Yuanyuan Yang, Jianchao Wang
IWCMC
2009
ACM
14 years 1 months ago
Multiple-antenna multiple-relay system with precoding for multiuser transmission
Multi-hop relaying will play a central role in next generation wireless systems. In this paper a novel relaying strategy that uses multiple-input multiple-output (MIMO) relays in ...
Arash Talebi, Witold A. Krzymien
KDD
2010
ACM
245views Data Mining» more  KDD 2010»
13 years 9 months ago
Learning incoherent sparse and low-rank patterns from multiple tasks
We consider the problem of learning incoherent sparse and lowrank patterns from multiple tasks. Our approach is based on a linear multi-task learning formulation, in which the spa...
Jianhui Chen, Ji Liu, Jieping Ye
ICC
2007
IEEE
114views Communications» more  ICC 2007»
13 years 11 months ago
Channel-Matched Spreading Codes for the Downlink of MC-CDMA
Abstract-- This paper concerns the multiple access performance of spreading codes used in the downlink of multicarrier code-division multiple-access (MC-CDMA). Complex-valued sprea...
Qinghua Shi, Yong Liang Guan, Choi Look Law