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PVLDB
2010
103views more  PVLDB 2010»
15 years 5 months ago
Fast Optimal Twig Joins
In XML search systems twig queries specify predicates on node values and on the structural relationships between nodes, and a key operation is to join individual query node matche...
Nils Grimsmo, Truls Amundsen Bjørklund, Mag...
SAGT
2010
Springer
151views Game Theory» more  SAGT 2010»
15 years 5 months ago
On the Existence of Optimal Taxes for Network Congestion Games with Heterogeneous Users
Abstract. We consider network congestion games in which a finite number of non-cooperative users select paths. The aim is to mitigate the inefficiency caused by the selfish users...
Dimitris Fotakis, George Karakostas, Stavros G. Ko...
ERSA
2009
149views Hardware» more  ERSA 2009»
15 years 4 months ago
Hardware-Optimized Ziggurat Algorithm for High-Speed Gaussian Random Number Generators
Many scientific and engineering applications, which are increasingly being ported from software to reconfigurable platforms, require Gaussian-distributed random numbers. Thus, the...
Hassan Edrees, Brian Cheung, McCullen Sandora, Dav...
ESTIMEDIA
2009
Springer
15 years 4 months ago
Optimal stack frame placement and transfer for energy reduction targeting embedded processors with scratch-pad memories
Abstract--Memory accesses are a major cause of energy consumption for embedded systems and the stack is a frequent target for data accesses. This paper presents a fully software te...
Lovic Gauthier, Tohru Ishihara
TMC
2011
203views more  TMC 2011»
15 years 1 months ago
Throughput Optimization in Mobile Backbone Networks
—This paper describes new algorithms for throughput optimization in a mobile backbone network. This hierarchical communication framework combines mobile backbone nodes, which hav...
Emily M. Craparo, Jonathan P. How, Eytan Modiano