412 search results - page 45 / 83 » Aggregate queries over ontologies |
SENSYS
2004
ACM
14 years 3 months ago
2004
ACM
Previous approaches for computing duplicate-sensitive aggregates in sensor networks (e.g., in TAG) have used a tree topology, in order to conserve energy and to avoid double-count...
SIGIR
2012
ACM
12 years 17 days ago
2012
ACM
We introduce the problem of domain adaptation for content-based retrieval and propose a domain adaptation method based on relative aggregation points (RAPs). Content-based retriev...
CIKM
2010
Springer
13 years 8 months ago
2010
Springer
In recent years, there has been an explosion of publicly available RDF and OWL data sources. In order to effectively and quickly answer queries in such an environment, we present...
RTCSA
2007
IEEE
14 years 4 months ago
2007
IEEE
RFID middleware systems collect and filter RFID streaming data gathered continuously by numerous readers to process requests from applications. These requests are called continuou...
IEEECSA
2009
13 years 7 months ago
2009
- The SQL language allows users to express queries that have nested subqueries in them. Optimization of nested queries has received considerable attention over the last few years. ...