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 …

This chapter explores the promise and potential of Regulatory Technologies (RegTech), a
new and vital dimension to FinTech. It draws on the findings and outcomes of a five-year …

This paper presents a dynamic geospatial knowledge graph as part of The World Avatar
project, with an underlying ontology based on CityGML 2.0 for three-dimensional …

We present an extension of the ontology-based data access platform Ontop that supports
answering SPARQL queries under the OWL 2 QL direct semantics entailment regime for …

The integration of the raster data cube alongside another form of geospatial data (eg, vector
data) raises considerable challenges when it comes to managing and representing it using …

We design temporal description logics (TDLs) suitable for reasoning about temporal
conceptual data models and investigate their computational complexity. Our formalisms are …

Following the current trend, most of the well-known database systems, being relational,
NoSQL, or NewSQL, denote themselves as multi-model. This industry-driven approach …

We study FO-rewritability of conjunctive queries in the presence of ontologies formulated in
a description logic between EL and Horn-SHIF, along with related query containment …

Ontology-mediated query answering (OMQA) is a new paradigm in data management that
seeks to exploit the semantic knowledge expressed in ontologies to improve query …

Linked Data promises that a large portion of Web Data will be usable as one big interlinked
RDF database against which structured queries can be answered. In this lecture we will …