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» Introduction to Randomized Algorithms
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178
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STOC
2003
ACM
124views Algorithms» more  STOC 2003»
16 years 6 months ago
Extractors: optimal up to constant factors
This paper provides the first explicit construction of extractors which are simultaneously optimal up to constant factors in both seed length and output length. More precisely, fo...
Chi-Jen Lu, Omer Reingold, Salil P. Vadhan, Avi Wi...
SIGMOD
2008
ACM
138views Database» more  SIGMOD 2008»
16 years 6 months ago
Sampling time-based sliding windows in bounded space
Random sampling is an appealing approach to build synopses of large data streams because random samples can be used for a broad spectrum of analytical tasks. Users are often inter...
Rainer Gemulla, Wolfgang Lehner
INFOCOM
2009
IEEE
16 years 29 days ago
Null Keys: Limiting Malicious Attacks Via Null Space Properties of Network Coding
—The performance of randomized network coding can suffer significantly when malicious nodes corrupt the content of the exchanged blocks. Previous work have introduced error corr...
Elias Kehdi, Baochun Li
CIVR
2009
Springer
132views Image Analysis» more  CIVR 2009»
16 years 27 days ago
Real-time bag of words, approximately
We start from the state-of-the-art Bag of Words pipeline that in the 2008 benchmarks of TRECvid and PASCAL yielded the best performance scores. We have contributed to that pipelin...
Jasper R. R. Uijlings, Arnold W. M. Smeulders, Rem...
COCO
2009
Springer
131views Algorithms» more  COCO 2009»
16 years 27 days ago
A Multi-Round Communication Lower Bound for Gap Hamming and Some Consequences
—The Gap-Hamming-Distance problem arose in the context of proving space lower bounds for a number of key problems in the data stream model. In this problem, Alice and Bob have to...
Joshua Brody, Amit Chakrabarti