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INFOCOM
2011
IEEE
14 years 11 months ago
Optimal sampling algorithms for frequency estimation in distributed data
—Consider a distributed system with n nodes where each node holds a multiset of items. In this paper, we design sampling algorithms that allow us to estimate the global frequency...
Zengfeng Huang, Ke Yi, Yunhao Liu, Guihai Chen
SIGMOD
2011
ACM
206views Database» more  SIGMOD 2011»
14 years 10 months ago
Sampling based algorithms for quantile computation in sensor networks
We study the problem of computing approximate quantiles in large-scale sensor networks communication-efficiently, a problem previously studied by Greenwald and Khana [12] and Shri...
Zengfeng Huang, Lu Wang, Ke Yi, Yunhao Liu
ATVA
2011
Springer
254views Hardware» more  ATVA 2011»
14 years 7 months ago
Formal Analysis of Online Algorithms
In [AKL10], we showed how viewing online algorithms as reactive systems enables the application of ideas from formal verification to the competitive analysis of online algorithms....
Benjamin Aminof, Orna Kupferman, Robby Lampert
CCP
2011
136views more  CCP 2011»
14 years 7 months ago
Fast Implementation of Block Motion Estimation Algorithms in Video Encoders
This project will involve analysing some of the newer fast algorithms in comparison with an exhaustive full search algorithm for motion estimation in video encoders. It will invest...
Naga Rohini Koduri, Mqhele E. Dlodlo, Gerhard de J...
SODA
2012
ACM
209views Algorithms» more  SODA 2012»
13 years 9 months ago
Simple and practical algorithm for sparse Fourier transform
We consider the sparse Fourier transform problem: given a complex vector x of length n, and a parameter k, estimate the k largest (in magnitude) coefficients of the Fourier transf...
Haitham Hassanieh, Piotr Indyk, Dina Katabi, Eric ...
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