Ontology evolution aims at maintaining an ontology up to date with respect to changes in the
domain that it models or novel requirements of information systems that it enables. The …

Ontologies play a key role in the advent of the Semantic Web. An important problem when
dealing with ontologies is the modification of an existing ontology in response to a certain …

The Semantic Web consists of many RDF graphs nameable by URIs. This paper extends the
syntax and semantics of RDF to cover such named graphs. This enables RDF statements …

A common perception is that there are two competing visions for the future evolution of the
Web: the Semantic Web and Web 2.0. A closer look, though, reveals that the core …

With the wider use of ontologies in the Semantic Web and as part of production systems,
multiple scenarios for ontology maintenance and evolution are emerging. For example …

One of the major problems of large scale, distributed and evolving ontologies is the potential
introduction of inconsistencies. In this paper we survey four different approaches to handling …

This paper studies concept drift over time. We first define the meaning of a concept in terms
of intension, extension and label. Then we study concept drift over time using two theories …

In this paper we propose a framework for reasoning with multi-version ontology, in which a
temporal logic is developed to serve as its semantic foundation. We show that the temporal …

This paper studies concept drift over time. We first define the meaning of a concept in terms
of intension, extension and label. We then introduce concept drift over time and two derived …

The OWL Web Ontology Language is an international standard for encoding and
exchanging ontologies and is designed to support the Semantic Web. The concept of the …