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ISAMI
2010
15 years 4 months ago
Adaptive Experience Sampling: Addressing the Dynamic Nature of In-Situ User Studies
Experience sampling techniques can be used to study user experiences with products in a natural setting and over time. Nowadays, researchers can use selective sampling to link the ...
Martijn H. Vastenburg, Natalia Romero Herrera
SIGMOD
2009
ACM
161views Database» more  SIGMOD 2009»
16 years 1 months ago
Dependency-aware reordering for parallelizing query optimization in multi-core CPUs
The state of the art commercial query optimizers employ cost-based optimization and exploit dynamic programming (DP) to find the optimal query execution plan (QEP) without evalua...
Wook-Shin Han, Jinsoo Lee
VLDB
1998
ACM
101views Database» more  VLDB 1998»
15 years 10 months ago
On Optimal Node Splitting for R-trees
The problem of finding an optimal bipartition of a rectangle set has a direct impact on query performance of dynamic R-trees. During update operations, overflowed nodes need to be...
Yván J. García, Mario A. Lopez, Scot...
ICCAD
1997
IEEE
137views Hardware» more  ICCAD 1997»
15 years 10 months ago
Optimization techniques for high-performance digital circuits
The relentless push for high performance in custom digital circuits has led to renewed emphasis on circuit optimization or tuning. The parameters of the optimization are typically...
Chandramouli Visweswariah
IPPS
2000
IEEE
15 years 11 months ago
Reduction Optimization in Heterogeneous Cluster Environments
Network of workstation (NOW) is a cost-effective alternative to massively parallel supercomputers. As commercially available off-the-shelf processors become cheaper and faster, ...
Pangfeng Liu, Da-Wei Wang