In this article, we provide a comprehensive introduction to knowledge graphs, which have
recently garnered significant attention from both industry and academia in scenarios that …

Ontology-based data access (OBDA) is receiving great attention as a new paradigm for
managing information systems through semantic technologies. According to this paradigm, a …

Querying inconsistent ontologies is an intriguing new problem that gave rise to a flourishing
research activity in the description logic (DL) community. The computational complexity of …

An important issue that arises when querying description logic (DL) knowledge bases is how
to handle the case in which the knowledge base is inconsistent. Indeed, while it may be …

Several inconsistency-tolerant semantics have been introduced for querying inconsistent
description logic knowledge bases. The first contribution of this paper is a practical approach …

Ontology-mediated query answering (OMQA) emerged as a paradigm to enhance querying
of data sources with an ontology that encodes background knowledge. In applications …

Several semantics have been proposed to query inconsistent ontological knowledge bases,
including the intersection of repairs and the intersection of closed repairs as two …

Several inconsistency-tolerant semantics have been introduced for querying inconsistent
description logic knowledge bases. This paper addresses the problem of explaining why a …

Previous work has proposed consistent query answering as a way to resolve
inconsistencies in ontologies. In these approaches to consistent query answering, however …

Querying inconsistent knowledge bases is a problem that has attracted a great deal of
interest over the last decades. While several semantics of query answering have been …