Titlebook: Handbook on Ontologies; Steffen Staab,Rudi Studer Book 20041st edition Springer-Verlag Berlin Heidelberg 2004 Conceptual Modeling.Informat

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Description Logics, which has formed the basis of several well-known ontology languages including OIL, DAML+OIL and OWL. We argue that, without the last decade of basic research in description logics, this family of knowledge representation languages could not have played such an important r?le in this context..Descr

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Ontologies in F-logic, the compact syntax, and the well defined semantics from logics. The salient features of F-logic include signatures, object identity, complex objects, methods, classes, inheritance and rules. We give an overview of the syntax and the intuitive semantics of F-logic. We discuss the semantics behind a

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The Resource Description Framework (RDF) and its Vocabulary Description Language RDFS semantic web and its relationship to other semantic web languages is described. The basic concepts of RDF and RDF Schema are explained and an example RDF schema is given. Limitations of RDF are described.

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Building a Very Large Ontology from Medical Thesaurigical repository, the UMLS, is transformed into a formally rigorous, expressive description logics format. This way, the broad coverage of the UMLS is combined with inference mechanisms for consistency and cycle checking. They are the key not only to proper cleansing of the knowledge directly import

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Ontology Learningof complementary disciplines that feed on different types of unstructured and semi-structured data in order to support a semi-automatic, cooperative ontology engineering process. Our ontology learning framework proceeds through ontology import, extraction, pruning, and refinement, giving the ontolog

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