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» The Unbalance of Set Systems
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PODS
2007
ACM
225views Database» more  PODS 2007»
16 years 7 months ago
Sketching unaggregated data streams for subpopulation-size queries
IP packet streams consist of multiple interleaving IP flows. Statistical summaries of these streams, collected for different measurement periods, are used for characterization of ...
Edith Cohen, Nick G. Duffield, Haim Kaplan, Carste...
PODS
2007
ACM
159views Database» more  PODS 2007»
16 years 7 months ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
PODS
2008
ACM
128views Database» more  PODS 2008»
16 years 7 months ago
Shape sensitive geometric monitoring
A fundamental problem in distributed computation is the distributed evaluation of functions. The goal is to determine the value of a function over a set of distributed inputs, in ...
Izchak Sharfman, Assaf Schuster, Daniel Keren
PERCOM
2004
ACM
16 years 6 months ago
An Augmented Virtual Reality Interface for Assistive Monitoring of Smart Spaces
Large sensor networks in applications such as surveillance and virtual classrooms, have to deal with the explosion of sensor information. Coherent presentation of data coming from...
Shichao Ou, Deepak R. Karuppiah, Andrew H. Fagg, E...
MOBIHOC
2003
ACM
16 years 6 months ago
Mobility helps security in ad hoc networks
Contrary to the common belief that mobility makes security more difficult to achieve, we show that node mobility can, in fact, be useful to provide security in ad hoc networks. We...
Jean-Pierre Hubaux, Levente Buttyán, Srdjan...
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