semantic web relational databases rdf linked data ontologies information systems sparql stream data owl linked open data mapping r2rml middleware bibliographic information digital repositories ontology application-specific ontologies real-time semantic annotation repositories sparql endpoint databases context-aware system feature extraction user interfaces software architecture ubiquitous computing dspace semantic sensor networks sensor data information flow incremental; rdf linked representations performance algorithms experimentation measurement incremental information systems applications database management information storage and retrieval document preparation and text processing artificial intelligence rdf views high-level semantics human-centric interfaces data sources knowledge base database context-aware distributed systems triples
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