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» Improving Query Answering over DL-Lite Ontologies
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COMAD
2009
13 years 5 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
KSEM
2010
Springer
13 years 3 months 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...
WWW
2008
ACM
14 years 5 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...
DLOG
2007
13 years 7 months ago
Expressive Querying over Fuzzy DL-Lite Ontologies
Abstract. Fuzzy Description Logics (f-DLs) have been proposed as formalisms capable of capturing and reasoning about imprecise and vague knowledge. The last years, research in Desc...
Jeff Z. Pan, Giorgos B. Stamou, Giorgos Stoilos, E...
CORR
2007
Springer
77views Education» more  CORR 2007»
13 years 4 months ago
Query Evaluation and Optimization in the Semantic Web
We address the problem of answering Web ontology queries efficiently. An ontology is formalized as a Deductive Ontology Base (DOB), a deductive database that comprises the ontology...
Edna Ruckhaus, Eduardo Ruiz, Maria-Esther Vidal