Abstract Information systems have to deal with an increasing amount of data that is
heterogeneous, unstructured, or incomplete. In order to align and complete data, systems …

The recently introduced series of description logics under the common monikerDL-Lite'has
attracted attention of the description logic and semantic web communities due to the low …

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 …

Background Ontology development is a rapidly growing area of research, especially in the
life sciences domain. To promote collaboration and interoperability between different …

Ontologies provide a conceptualization of a domain of interest. Nowadays, they are typically
represented in terms of Description Logics (DLs), and are seen as the key technology used …

In the past two decades, the use of ontologies has grown accompanied by a diversity in
ontological representations and applications to more comprehensive domains. Knowledge …

We develop a formal framework for comparing different versions of ontologies, and apply it
to ontologies formulated in terms of DL-Lite, a family of 'lightweight'description logics …

The aim of this paper is to introduce and study model-theoretic notions of modularity in
description logic and related reasoning problems. Our approach is based on a …

There are various techniques for specifying a module of an ontology that covers all
knowledge about a given set of terms. These differ with respect to the size of the module, the …

Extracting a subset of a given ontology that captures all the ontology's knowledge about a
specified set of terms is a well-understood task. This task can be based, for instance, on …