491 search results - page 3 / 99 » Optimizing complex queries with multiple relation instances |
DLOG
2008
13 years 8 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
ICDE
2007
IEEE
14 years 7 months ago
2007
IEEE
Algorithms that exploit sort orders are widely used to implement joins, grouping, duplicate elimination and other set operations. Query optimizers traditionally deal with sort ord...
PAKDD
2005
ACM
13 years 11 months ago
2005
ACM
Traditional multiple query optimization methods focus on identifying common subexpressions in sets of relational queries and on constructing their global execution plans. In this p...
DEXAW
2007
IEEE
14 years 18 days ago
2007
IEEE
The semantic web represents meta-data as a relation of triples using the RDF data model. We have developed a virtual repository system that enables to process queries to RDF views...
CVPR
2012
IEEE
11 years 8 months ago
2012
IEEE
Human activity recognition has potential to impact a wide range of applications from surveillance to human computer interfaces to content based video retrieval. Recently, the rapi...