Ontologies and the semantic web

Semantic Web & Ontologies

Closing Semantic Web Ontologies

In this paper, we present a novel formalism of hybrid MKNF knowledge bases, which allows us to seamlessly integrate an arbitrary decidable description logic with logic programming rules. We thus obtain a powerful hybrid formalism that combines the best features of both description logics, such as the ability to model taxonomic knowledge, and logic programming, such as the ability to perform non...

Rules and Ontologies for the Semantic Web

Rules and ontologies play a key role in the layered architecture of the Semantic Web, as they are used to ascribe meaning to, and to reason about, data on the Web. While the Ontology Layer of the Semantic Web is quite developed, and the Web Ontology Language (OWL) is a W3C recommendation since a couple of years already, the rules layer is far less developed and an active area of research; a num...

Knowledge Representation, Ontologies, and the Semantic Web

A unified representation for web data and web resources, is absolutely necessary in nowdays large scale Internet data management systems. This representation will allow for the machines to meaningfully process the available information and provide semantically correct answers to imposed queries. Ontologies are expected to play an important role towards this direction of web technology which def...

Learning Ontologies for the Semantic Web

The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the Semantic Web depends strongly on the proliferation of ontologies, which requires fast and easy engineering of ontologies and avoidance of a knowledge acquisition bottleneck. Ontology Learning greatly facil...