412 search results - page 20 / 83 » Aggregate queries over ontologies |
DOLAP
2004
ACM
14 years 3 months ago
2004
ACM
A peer-to-peer (P2P) data management system consists essentially of a network of peer systems, each maintaining full autonomy over its own data resources. Data exchange between pe...
SIGMOD
2011
ACM
13 years 26 days ago
2011
ACM
Aggregate similarity search, a.k.a. aggregate nearest neighbor (Ann) query, finds many useful applications in spatial and multimedia databases. Given a group Q of M query objects...
EDBT
2008
ACM
14 years 10 months ago
2008
ACM
Abstract. Monitoring aggregates on IP traffic data streams is a compelling application for data stream management systems. Often, such streaming aggregation queries involve joining...
SEMWEB
2010
Springer
13 years 8 months ago
2010
Springer
Abstract. In order to effectively and quickly answer queries in environments with distributed RDF/OWL, we present a query optimization algorithm to identify the potentially relevan...
CORR
2010
Springer
13 years 6 months ago
2010
Springer
Because of the increasing number of electronic data, designing efficient tools to retrieve and exploit documents is a major challenge. Current search engines suffer from two main d...