Sciweavers

333 search results - page 9 / 67
» Query Optimization Using Local Completeness
Sort
View
KR
1992
Springer
13 years 11 months ago
Learning Useful Horn Approximations
While the task of answering queries from an arbitrary propositional theory is intractable in general, it can typicallybe performed e ciently if the theory is Horn. This suggests t...
Russell Greiner, Dale Schuurmans
VLDB
1998
ACM
97views Database» more  VLDB 1998»
13 years 12 months ago
Design and Analysis of Parametric Query Optimization Algorithms
Query optimizers normally compile queries into one optimal plan by assuming complete knowledge of all cost parameters such asselectivity and resourceavailability. The execution of...
Sumit Ganguly
ICDE
2012
IEEE
240views Database» more  ICDE 2012»
11 years 10 months ago
Approximate Shortest Distance Computing: A Query-Dependent Local Landmark Scheme
—Shortest distance query between two nodes is a fundamental operation in large-scale networks. Most existing methods in the literature take a landmark embedding approach, which s...
Miao Qiao, Hong Cheng, Lijun Chang, Jeffrey Xu Yu
SEMWEB
2005
Springer
14 years 1 months ago
Containment and Minimization of RDF/S Query Patterns
Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extens...
Giorgos Serfiotis, Ioanna Koffina, Vassilis Christ...
GECCO
2005
Springer
139views Optimization» more  GECCO 2005»
14 years 1 months ago
Solving large scale combinatorial optimization using PMA-SLS
Memetic algorithms have become to gain increasingly important for solving large scale combinatorial optimization problems. Typically, the extent of the application of local search...
Jing Tang, Meng-Hiot Lim, Yew-Soon Ong, Meng Joo E...