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» Semantics and Complexity of SPARQL
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ESWS
2008
Springer
14 years 12 months ago
A Semantic Web Middleware for Virtual Data Integration on the Web
In this contribution a system is presented, which provides access to distributed data sources using Semantic Web technology. While it was primarily designed for data sharing and sc...
Andreas Langegger, Wolfram Wöß, Martin ...
AAAI
2006
14 years 11 months ago
Using the Semantic Web to Integrate Ecoinformatics Resources
We demonstrate an end-to-end use case of the semantic web's utility for synthesizing ecological and environmental data. ELVIS (the Ecosystem Location Visualization and Inform...
Cynthia Sims Parr, Andriy Parafiynyk, Joel Sachs, ...
SEMWEB
2010
Springer
14 years 8 months ago
Representing and Querying Validity Time in RDF and OWL: A Logic-Based Approach
RDF(S) and OWL 2 currently support only static ontologies. In practice, however, the truth of statements often changes with time, and Semantic Web applications often need to repres...
Boris Motik
85
Voted
OTM
2007
Springer
15 years 4 months ago
A Role and Attribute Based Access Control System Using Semantic Web Technologies
We show how Semantic Web technologies can be used to build an access control system. We follow the role-based access control approach (RBAC) and extend it with contextual attribute...
Lorenzo Cirio, Isabel F. Cruz, Roberto Tamassia
ICDE
2009
IEEE
143views Database» more  ICDE 2009»
15 years 12 months ago
iBroker: An Intelligent Broker for Ontology Based Publish/Subscribe Systems
In this paper, we present iBroker, an Intelligent Broker for ontology based publish/subscribe systems which syntactically and semantically match incoming OWL data to multiple user ...
Myung-Jae Park, Chin-Wan Chung