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GIS
2010
ACM
13 years 8 months ago
Decentralized querying of topological relations between regions without using localization
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...
Matt Duckham, Myeong Hun Jeong, Sanjiang Li, Joche...
CIKM
2008
Springer
14 years 1 days ago
The query-flow graph: model and applications
Query logs record the queries and the actions of the users of search engines, and as such they contain valuable information about the interests, the preferences, and the behavior ...
Paolo Boldi, Francesco Bonchi, Carlos Castillo, De...
SIGMOD
2006
ACM
170views Database» more  SIGMOD 2006»
14 years 10 months ago
Energy-efficient monitoring of extreme values in sensor networks
Monitoring extreme values (MAX or MIN) is a fundamental problem in wireless sensor networks (and in general, complex dynamic systems). This problem presents very different algorit...
Adam Silberstein, Jun Yang 0001, Kamesh Munagala
SIGMOD
2003
ACM
127views Database» more  SIGMOD 2003»
14 years 10 months ago
Closing the key loophole in MLS databases
: There has been an abundance of research within the last couple of decades in the area of multilevel secure (MLS) databases. Recent work in this field deals with the processing of...
Nenad Jukic, Svetlozar Nestorov, Susan V. Vrbsky
SAC
2009
ACM
14 years 4 months ago
GPU-based computation of distance functions on road networks with applications
We present a GPU-based algorithm for computing discretized distance functions on road networks. As applications, we provide algorithms for computing discrete Order-k Network Voron...
Marta Fort, Joan Antoni Sellarès