412 search results - page 13 / 83 » Aggregate queries over ontologies |
DOLAP
2000
ACM
14 years 3 days ago
2000
ACM
We consider the view maintenance problem in a web-based environment, in which clients query information from databases, stored in the form of materialized data warehouses, without...
SSDBM
2009
IEEE
14 years 2 months ago
2009
IEEE
Scientific experiments produce large volumes of data represented as complex objects that describe independent events such as particle collisions. Scientific analyses can be express...
IPPS
2007
IEEE
14 years 2 months ago
2007
IEEE
— An important class of queries over sensor networks are network-wide aggregation queries. In this work we study a class of aggregation queries which we refer to as aggregate thr...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Data streaming systems are becoming essential for monitoring applications such as financial analysis and network intrusion detection. These systems often have to process many simi...
DEXA
2005
Springer
14 years 1 months ago
2005
Springer
Computing aggregates over distributed data sets constitutes an interesting class of distributed queries. Recent advances in peer-to-peer discovery of data sources and query process...