98 search results - page 13 / 20 » Query rewriting and answering under constraints in data inte... |
ESWS
2008
Springer
13 years 10 months ago
2008
Springer
Integrated access to multiple distributed and autonomous RDF data sources is a key challenge for many semantic web applications. As a reaction to this challenge, SPARQL, the W3C Re...
SIGMOD
2008
ACM
13 years 8 months ago
2008
ACM
Tree pattern queries (TPQs) provide a natural and easy formalism to query tree-structured XML data, and the efficient processing of such queries has attracted a lot of attention. ...
ADBIS
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
ESWS
2005
Springer
14 years 2 months ago
2005
Springer
The Semantic Web is an extension of the current Web in which information is given well-defined meaning to support effective data discovery and integration. The RDF framework is a...
ICDE
2007
IEEE
14 years 2 months ago
2007
IEEE
Recently there is much need of discovering useful knowledge from massive log-data which are generated by Webbased information systems. Such log-data have multiple attributes about...