7576 search results - page 38 / 1516 » On Querying Ontologies and Databases |
DKE
2010
13 years 8 months ago
2010
An ontology is a formal conceptualization of a domain, specifying the concepts of the domain and the relations between them. It is however not a straight forward task to use this ...
SEMWEB
2010
Springer
13 years 6 months ago
2010
Springer
Abstract. Measuring similarity between ontologies can be very useful for different purposes, e.g., finding an ontology to replace another, or finding an ontology in which queries c...
EDBT
2012
ACM
11 years 11 months ago
2012
ACM
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
WWW
2008
ACM
14 years 9 months ago
2008
ACM
Fuzzy ontologies are envisioned to be useful in the Semantic Web. Existing fuzzy ontology reasoners are not scalable enough to handle the scale of data that the Web provides. In t...
ESWS
2008
Springer
13 years 10 months ago
2008
Springer
Abstract. Relational databases are valuable sources for ontology learning. Methods and tools have been proposed to generate ontologies from such structured input. However, a major ...