Sciweavers

713 search results - page 84 / 143
» A Learning Optimizer for a Federated Database Management Sys...
Sort
View
VLDB
2005
ACM
139views Database» more  VLDB 2005»
15 years 3 months ago
Statistical Learning Techniques for Costing XML Queries
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
Ning Zhang 0002, Peter J. Haas, Vanja Josifovski, ...
IEEEPACT
2006
IEEE
15 years 3 months ago
Whole-program optimization of global variable layout
On machines with high-performance processors, the memory system continues to be a performance bottleneck. Compilers insert prefetch operations and reorder data accesses to improve...
Nathaniel McIntosh, Sandya Mannarswamy, Robert Hun...
GI
2004
Springer
15 years 3 months ago
Quality Criteria for Competency Assignments: Examples from a Project Management Case Study
: We present several quality criteria for skills management initiatives based on the competence-performance approach [Kor97]. The criteria help to measure reliability and validity ...
Tobias Ley, Dietrich Albert
DAWAK
2000
Springer
15 years 2 months ago
Optimal Multidimensional Query Processing Using Tree Striping
In this paper, we propose a new technique for multidimensional query processing which can be widely applied in database systems. Our new technique, called tree striping, generalize...
Stefan Berchtold, Christian Böhm, Daniel A. K...
GIS
2008
ACM
14 years 10 months ago
Spatial queries in disconnected mobile networks
In this paper we study in-network query processing in disconnected mobile environments, where both ad-hoc communication and infrastructure communication are available. Depending o...
Xinjuan Zhu, Bo Xu, Ouri Wolfson