Sciweavers

1160 search results - page 34 / 232
» Query Processing and Optimization for Pictorial Query Trees
Sort
View
FQAS
2006
Springer
99views Database» more  FQAS 2006»
14 years 2 months ago
Partition-Based Approach to Processing Batches of Frequent Itemset Queries
We consider the problem of optimizing processing of batches of frequent itemset queries. The problem is a particular case of multiple-query optimization, where the goal is to minim...
Przemyslaw Grudzinski, Marek Wojciechowski, Maciej...
GIS
2006
ACM
15 years 7 hour ago
Optimization of multiple continuous queries over streaming satellite data
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...
Quinn Hart, Michael Gertz
ADC
2008
Springer
143views Database» more  ADC 2008»
14 years 1 months ago
TRACK : A Novel XML Join Algorithm for Efficient Processing Twig Queries
In order to find all occurrences of a tree/twig pattern in an XML database, a number of holistic twig join algorithms have been proposed. However, most of these algorithms focus o...
Dongyang Li, Chunping Li
PODS
2010
ACM
249views Database» more  PODS 2010»
14 years 4 months ago
Semantic query optimization in the presence of types
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
Michael Meier 0002, Michael Schmidt, Fang Wei, Geo...
SIGMOD
2010
ACM
171views Database» more  SIGMOD 2010»
14 years 3 months ago
Variance aware optimization of parameterized queries
Parameterized queries are commonly used in database applications. In a parameterized query, the same SQL statement is potentially executed multiple times with different parameter ...
Surajit Chaudhuri, Hongrae Lee, Vivek R. Narasayya