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KDD
2008
ACM
14 years 9 months ago
2008
ACM
We analyze a massive social network, gathered from the records of a large mobile phone operator, with more than a million users and tens of millions of calls. We examine the distr...
PODC
2006
ACM
14 years 2 months ago
2006
ACM
We study the problem of maintaining sketches of recent elements of a data stream. Motivated by applications involving network data, we consider streams that are asynchronous, in w...
UIC
2009
Springer
14 years 3 months ago
2009
Springer
Abstract. Portable computers are used to store and access sensitive information. They are frequently used in insecure locations with little or no physical protection, and are there...
CCS
2007
ACM
14 years 3 months ago
2007
ACM
In this paper we experimentally analyse various dynamic timeout adjustment strategies in server queues as potential counter-measures against degradation of service attacks. Previo...
KDD
2006
ACM
14 years 9 months ago
2006
ACM
We describe a data mining system to detect frauds that are camouflaged to look like normal activities in domains with high number of known relationships. Examples include accounti...