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DMSN
2005
ACM
13 years 10 months ago
Timely data delivery in sensor networks using whirlpool
In this paper, we introduce a rotating interrogation technique for sensor networks called Whirlpool. Whirlpool provides opportunities to optimize data delivery in time-critical mo...
Divyasheel Sharma, Vladimir Zadorozhny, Panos K. C...
ICDE
2007
IEEE
135views Database» more  ICDE 2007»
14 years 3 months ago
Cost-Aware Skyline Queries in Structured Overlays
Recently, systems providing access to extremely large data collections, managed in a distributed manner, gain emerging attention. A promising approach to implement the physical la...
Marcel Karnstedt, Jessica Müller, Kai-Uwe Sat...
PODS
2010
ACM
249views Database» more  PODS 2010»
14 years 1 months ago
Semantic query optimization in the presence of types
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
Michael Meier 0002, Michael Schmidt, Fang Wei, Geo...
WWW
2007
ACM
14 years 9 months ago
Detectives: detecting coalition hit inflation attacks in advertising networks streams
Click fraud is jeopardizing the industry of Internet advertising. Internet advertising is crucial for the thriving of the entire Internet, since it allows producers to advertise t...
Ahmed Metwally, Divyakant Agrawal, Amr El Abbadi
SIGMOD
2005
ACM
175views Database» more  SIGMOD 2005»
14 years 9 months ago
A taxonomy of scientific workflow systems for grid computing
With the advent of Grid and application technologies, scientists and engineers are building more and more complex applications to manage and process large data sets, and execute s...
Jia Yu, Rajkumar Buyya