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Ontop: Answering SPARQL queries over relational databases

Calvanese D; Cogrel B; Komla-Ebri S; Kontchakov R; Lanti D; Rezk M; Rodriguez-Muro M; Xiao G (2017)
We present Ontop, an open-source Ontology-Based Data Access (OBDA) system that allows for querying relational data sources through a conceptual representation of the domain of interest, provided in terms of an ontology, ...
Ontology-Based Access To Temporal Data With Ontop: A Framework Proposal

Güzel Kalayci E; Brandt S; Calvanese D; Ryzhikov V; Xiao G; Zakharyaschev M (2019)
Predictive analysis gradually gains importance in industry. For instance, service engineers at Siemens diagnostic centres unveil hidden knowledge in huge amounts of historical sensor data and use this knowledge to improve ...