708 search results - page 138 / 142 » A Genetic Algorithm for Database Query Optimization |
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Given a set of model graphs D and a query graph q, containment search aims to find all model graphs g D such that q contains g (q g). Due to the wide adoption of graph models, f...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
We consider the problem of collectively approximating a set of sensor signals using the least amount of space so that any individual signal can be efficiently reconstructed within...
FODO
1993
Springer
13 years 11 months ago
1993
Springer
Abstract. Data storage systems are being called on to manage continuous media data types, such as digital audio and video. There is a demand by applications for \constrained-latenc...
KDD
2006
ACM
14 years 7 months ago
2006
ACM
Observed in many applications, there is a potential need of extracting a small set of frequent patterns having not only high significance but also low redundancy. The significance...
ICCS
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. In knowledge bases, the open world assumption and the ability to express variables may lead to an answer redundancy problem. This problem occurs when the returned answers...