412 search results - page 6 / 83 » Aggregate queries over ontologies |
ICDE
2006
IEEE
14 years 8 months ago
2006
IEEE
Aggregate monitoring over data streams is attracting more and more attention in research community due to its broad potential applications. Existing methods suffer two problems, 1...
DAWAK
2007
Springer
14 years 1 months ago
2007
Springer
We propose a privacy-preserving protocol for computing aggregation queries over the join of private tables. In this problem, several parties wish to share aggregated information ov...
SIGMOD
2010
ACM
13 years 7 months ago
2010
ACM
Many websites provide restrictive form-like interfaces which allow users to execute search queries on the underlying hidden databases. In this paper, we consider the problem of es...
KSEM
2010
Springer
13 years 5 months ago
2010
Springer
In this paper, we consider the problem of query answering over large multimedia ontologies. Traditional reasoning systems may have problems to deal with large amounts of expressive...
SEMWEB
2009
Springer
14 years 1 months ago
2009
Springer
We present a query processing procedure for conjunctive queries in distributed ontology systems where a large ontology is divided into ontology fragments that are later distributed...