Context-aware computing enriches the capabilities of intelligent devices complemented with
smart applications and helps establish smart ecosystems in fields such as Ambient …

In the presence of an ontology, query answers must reflect not only data explicitly present in
the database, but also implicit data, which holds due to the ontology, even though it is not …

Reformulation-based query answering is a query processing technique aiming at answering
queries under constraints. It consists of reformulating the query based on the constraints, so …

Abstract Controlled Query Evaluation (CQE) is a confidentiality-preserving framework in
which private information is protected through a policy, and a (optimal) censor guarantees …

In this paper we study the problem of information disclosure in ontology-based data access
(OBDA). Following previous work on Controlled Query Evaluation, we introduce the …

OWL 2 EL is a popular ontology language that supports role inclusions--axioms of the form
S1... Sn⊆ S that capture compositional properties of roles. Role inclusions closely …

We study information disclosure in Description Logic ontologies, in the spirit of Controlled
Query Evaluation, where query answering is filtered through optimal censors maximizing …

Information extraction (IE) refers to the task of turning text documents into a structured form,
in order to make the information contained therein automatically processable. Ontology …

Information Extraction (IE) is the task of automatically organizing in a structured form data
extracted from free text documents. In several contexts, it is often desirable that the extracted …

Ontology classification is the reasoning service that computes all subsumption relationships
inferred in an ontology between concept, role, and attribute names in the ontology signature …