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» On the reduction of a random basis
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FOCS
2009
IEEE
15 years 8 months ago
Regularity Lemmas and Combinatorial Algorithms
— We present new combinatorial algorithms for Boolean matrix multiplication (BMM) and preprocessing a graph to answer independent set queries. We give the first asymptotic impro...
Nikhil Bansal, Ryan Williams
P2P
2009
IEEE
126views Communications» more  P2P 2009»
15 years 8 months ago
Robust Lifetime Measurement in Large-Scale P2P Systems with Non-Stationary Arrivals
—Characterizing user churn has become an important topic in studying P2P networks, both in theoretical analysis and system design. Recent work [26] has shown that direct sampling...
Xiaoming Wang, Zhongmei Yao, Yueping Zhang, Dmitri...
IROS
2009
IEEE
132views Robotics» more  IROS 2009»
15 years 8 months ago
Segregation in swarms of mobile robots based on the Brazil nut effect
— We study a simple algorithm inspired by the Brazil nut effect for achieving segregation in a swarm of mobile robots. The algorithm lets each robot mimic a particle of a certain...
Roderich Groß, Stéphane Magnenat, Fra...
ESA
2009
Springer
104views Algorithms» more  ESA 2009»
15 years 8 months ago
Improved Approximation Algorithms for Label Cover Problems
In this paper we consider both the maximization variant Max Rep and the minimization variant Min Rep of the famous Label Cover problem, for which, till now, the best approximation ...
Moses Charikar, MohammadTaghi Hajiaghayi, Howard J...
ICHIT
2009
Springer
15 years 8 months ago
An improved camera identification method based on the texture complexity and the image restoration
The identification of source camera is useful to improve the capability of evidence in the digital image such as distinguish the photographer taking illegal images and adopting di...
Kazuya Matsushita, Hitoshi Kitazawa