One of the key promises of the Semantic Web is its potential to enable and facilitate data
interoperability. The ability of data providers and application developers to share and reuse …

Ontologies are widely used in biological and biomedical research. Their success lies in their
combination of four main features present in almost all ontologies: provision of standard …

A few years after Google announced that their 'Knowledge Graph'would have allowed
searching for things, not strings, 1 knowledge graphs start entering information retrieval …

Abstract ℰ ℒ EL is a simple tractable Description Logic that features conjunctions and
existential restrictions. Due to its favorable computational properties and relevance to …

In this paper we study data complexity of answering conjunctive queries over description
logic (DL) knowledge bases constituted by a TBox and an ABox. In particular, we are …

This paper provides a survey to and a comparison of state-of-the-art Semantic Web
reasoners that succeed in classifying large ontologies expressed in the tractable OWL 2 EL …

Reasoner is a software that is used to derive new facts from the existing ontologies. Some of
the popular reasoners developed in the last few years are: Pellet, RACER, FACT++ …

Ontology authoring is a non-trivial task for authors who are not proficient in logic. It is difficult
to either specify the requirements for an ontology, or test their satisfaction. In this paper, we …

Abstract The OWL Reasoner Evaluation competition is an annual competition (with an
associated workshop) that pits OWL 2 compliant reasoners against each other on various …

Classical, two-valued, ontologies have been successfully applied to represent the
knowledge in many domains. However, it has been pointed out that they are not suitable in …