176 search results - page 7 / 36 » Active Ontologies for Data Source Queries |
CIKM
2010
Springer
13 years 6 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...
ER
2009
Springer
13 years 10 months ago
2009
Springer
Ontologies have been extensively used to model domain-specific knowledge. Recent research has applied ontologies to enhance the discovery and retrieval of geographic data in Spatia...
DEXA
2004
Springer
14 years 28 days ago
2004
Springer
Data integration is the process that gives users access to multiple data sources though queries against a global schema. Semantic heterogeneity has been identified as the most imp...
GISCIENCE
2008
Springer
13 years 8 months ago
2008
Springer
Geospatial data sharing is an increasingly important subject as large amount of data is produced by variety of sources, stored in incompatible formats, and accessible through diffe...
SAC
2003
ACM
14 years 24 days ago
2003
ACM
Based on the limitations raised by existing approaches in the context of the Semantic Web, we propose a formalism, Web Sources Global Ontology (WebSOGO), a data meta-model for the...