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cs.DB2019
Certain Answers to a SPARQL Query over a Knowledge Base (extended version)
Julien Corman, Guohui Xiao
Ontology-Mediated Query Answering (OMQA) is a well-established framework to answer queries over an RDFS or OWL Knowledge Base (KB). OMQA was originally designed for unions of conju…
cs.DB2019★ 1 cited
Enriching Ontology-based Data Access with Provenance (Extended Version)
Diego Calvanese, Davide Lanti, Ana Ozaki +2
Ontology-based data access (OBDA) is a popular paradigm for querying heterogeneous data sources by connecting them through mappings to an ontology. In OBDA, it is often difficult t…