412 search results - page 39 / 83 » Aggregate queries over ontologies |
VLDB
2007
ACM
14 years 10 months ago
2007
ACM
We present STAR, a self-tuning algorithm that adaptively sets numeric precision constraints to accurately and efficiently answer continuous aggregate queries over distributed data...
SIGIR
2009
ACM
14 years 4 months ago
2009
ACM
It is well known that anchor text plays a critical role in a variety of search tasks performed over hypertextual domains, including enterprise search, wiki search, and web search....
ECWEB
2005
Springer
14 years 3 months ago
2005
Springer
This work describes a novel strategy for designing an XPath processor that acts over an RDF mapping of XML. We use a modelmapping approach to represent instances of XML and XML Sch...
SEMWEB
2007
Springer
14 years 4 months ago
2007
Springer
This paper summarizes the results of the X-SOM tool in the OAEI 2007 campaign. X-SOM is an extensible ontology mapper that combines various matching algorithms by means of a feed-f...
DLOG
2006
13 years 11 months ago
2006
The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...