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180
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COMPGEOM
2009
ACM
16 years 1 months ago
2009
ACM
We study the problem of computing zigzag persistence of a sequence of homology groups and study a particular sequence derived from the levelsets of a real-valued function on a top...
161
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HT
2009
ACM
16 years 1 months ago
2009
ACM
Folksonomies provide a rich source of data to study social patterns taking place on the World Wide Web. Here we study the temporal patterns of users’ tagging activity. We show t...
178
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IWCMC
2009
ACM
16 years 1 months ago
2009
ACM
This paper addresses the problem of optimal cooperative spectrum sensing in a cognitive-enabled sensor network where cognitive sensors can cooperate in the sensing of the spectrum...
191
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CDC
2008
IEEE
16 years 1 months ago
2008
IEEE
— We consider the problem of small-gain analysis of asymptotic behavior in interconnected nonlinear dynamic systems. Mathematical models of these systems are allowed to be uncert...
149
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PIMRC
2008
IEEE
16 years 1 months ago
2008
IEEE
Abstract— To protect SIP communication networks from attacks, especially flooding attacks like Denial-of-Service or message spam, Intrusion Detection Systems (IDS) are deployed ...