3 citations · 4 across the 3 of their papers we have counts for
3 papers
The Bag Semantics of Ontology-Based Data Access
Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis +3
Ontology-based data access (OBDA) is a popular approach for integrating and querying multiple data sources by means of a shared ontology. The ontology is linked to the sources usin…
Towards Analytics Aware Ontology Based Access to Static and Streaming Data (Extended Version)
Evgeny Kharlamov, Yannis Kotidis, Theofilos Mailis +10
Real-time analytics that requires integration and aggregation of heterogeneous and distributed streaming and static data is a typical task in many industrial scenarios such as diag…
Incomplete Information in RDF
Charalampos Nikolaou, Manolis Koubarakis
We extend RDF with the ability to represent property values that exist, but are unknown or partially known, using constraints. Following ideas from the incomplete information liter…