2043 search results - page 67 / 409 » The Limits of Querying Ontologies |
SSDBM
2008
IEEE
14 years 3 months ago
2008
IEEE
We propose an automatic method for modeling a relational database that uses SQL triggers and foreign-keys to efficiently answer positive semantic queries about ground instances for...
DASFAA
2007
IEEE
14 years 3 months ago
2007
IEEE
Recently, several approaches and systems were proposed to store in the same database data and the ontologies describing their meanings. We call these databases, ontology-based data...
FOCS
2004
IEEE
14 years 15 days ago
2004
IEEE
We study the learning models defined in [AKST97]: Learning with equivalence and limited membership queries and learning with equivalence and malicious membership queries. We show ...
IJMMS
2007
13 years 8 months ago
2007
Much has been written of the facilities for ontology building and reasoning offered for ontologies expressed in the Web Ontology Language (OWL). Less has been written about how th...
DEXA
2004
Springer
14 years 2 months 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...