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» Tractable Query Answering over Ontologies with Datalog -
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134
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CIKM
2011
Springer
14 years 1 months ago
Semantic data markets: a flexible environment for knowledge management
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
Roberto De Virgilio, Giorgio Orsi, Letizia Tanca, ...
179
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COMAD
2009
15 years 2 months ago
TRANS: Schema-Aware Mapping of OWL Ontologies into Relational Databases
An ontology is an explicit specification of shared conceptualization. The Web Ontology Language (OWL) is a family of knowledge representation languages for authoring ontologies, a...
Saurabh Kejriwal, N. S. Narayanaswamy
110
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KSEM
2010
Springer
15 years 8 days ago
Towards Scalable Instance Retrieval over Ontologies
In this paper, we consider the problem of query answering over large multimedia ontologies. Traditional reasoning systems may have problems to deal with large amounts of expressive...
Alissa Kaplunova, Ralf Möller, Sebastian Wand...
119
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WWW
2008
ACM
16 years 2 months ago
Scalable querying services over fuzzy ontologies
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...
Jeff Z. Pan, Giorgos B. Stamou, Giorgos Stoilos, S...