Recent years have seen an increasing interest in ontology-mediated query answering, in
which the semantic knowledge provided by an ontology is exploited when querying data …

The immense and constantly growing number of videos urges efficient automated
processing mechanisms for multimedia contents, which is a real challenge due to the huge …

Even though knowledge graphs have proven very useful for several tasks, they are marked
by incompleteness. Completion algorithms aim to extend knowledge graphs by predicting …

This paper shows how knowledge representation and reasoning techniques can be used to
support organizations in complying with the GDPR, that is, the new European data …

Combined approaches have become a successful technique for solving conjunctive query
(CQ) answering over description logics (DL) ontologies. Nevertheless, existing approaches …

Combined approaches have become a successful technique for CQ answering over
ontologies. Existing algorithms, however, are restricted to the logics underpinning the OWL 2 …

Conjunctive Query (CQ) answering is a primary reasoning task over knowledge bases.
However, when considering expressive description logics, query answering can be …

We consider reasoning problems in description logics and variants of first-order logic under
the fixed-domain semantics, where the model size is finite and explicitly given. It follows from …

We illustrate an OWL2 fragment properly tailored for the specification of both companies'
data protection policies and data subjects' consent to data processing. Assessing a …

Conjunctive query (CQ) answering over knowledge bases is an important reasoning task.
However, with expressive ontology languages such as OWL, query answering is …