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» Improved Algorithms for the k Maximum-Sums Problems
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SODA
2012
ACM
196views Algorithms» more  SODA 2012»
13 years 2 months ago
Polytope approximation and the Mahler volume
The problem of approximating convex bodies by polytopes is an important and well studied problem. Given a convex body K in Rd , the objective is to minimize the number of vertices...
Sunil Arya, Guilherme Dias da Fonseca, David M. Mo...
SIAMSC
2011
148views more  SIAMSC 2011»
14 years 6 months ago
Bootstrap AMG
We develop an algebraic multigrid (AMG) setup scheme based on the bootstrap framework for multiscale scientific computation. Our approach uses a weighted least squares definition...
Achi Brandt, James J. Brannick, K. Kahl, Irene Liv...
TCOM
2008
101views more  TCOM 2008»
14 years 11 months ago
Transmit beamforming for space-frequency coded MIMO-OFDM systems with spatial correlation feedback
Abstract--This paper addresses the problem of joint optimization of transmit beamforming and space-frequency (SF) coding for MIMO-OFDM systems with spatial correlation feedback in ...
Ahmed K. Sadek, Weifeng Su, K. J. Ray Liu
DAC
1996
ACM
15 years 4 months ago
Structural Gate Decomposition for Depth-Optimal Technology Mapping in LUT-based FPGA Design
In this paper, we study the problem of decomposing gates in fanin-unbounded or K-bounded networks such that the K-input LUT mapping solutions computed by a depthoptimal mapper hav...
Jason Cong, Yean-Yow Hwang
STOC
2007
ACM
100views Algorithms» more  STOC 2007»
16 years 4 days ago
Reordering buffers for general metric spaces
In the reordering buffer problem, we are given an input sequence of requests for service each of which corresponds to a point in a metric space. The cost of serving the requests h...
Matthias Englert, Harald Räcke, Matthias West...