Ontology (information science)

SEMANTIC WEB for the WORKING ONTOLOGIST cuts through the hype around the Semantic Web, providing a simple, feasible, coherent story of a technology that provides real business value today.

This course is designed to be of interest to both philosophers and those with a background in computer and information science. No prior knowledge of ontology is presupposed. It is free for use in any way.

The Suggested Upper Merged Ontology (SUMO) and its domain ontologies form the largest formal public ontology in existence today. They are being used for research and applications in search, linguistics and reasoning. SUMO is the only formal ontology that has been mapped to all of the WordNet lexicon. SUMO is written in the SUO-KIF language. SUMO is free and owned by the IEEE. The ontologies that extend SUMO are available under GNU General Public License.

Resources for the multilingual Semantic Web

The Semantic Web -- Semantic Data Representation

is a tool for supervised Machine Learning in OWL and Description Logics.

Ontology editors are applications designed to assist in the creation or manipulation of ontologies. They often express ontologies in one of many ontology languages.

SKOS stands for Simple Knowledge Organisation Systems. SKOS-Core is intended as a complement to OWL. It does provide a basic framework for building concept schemes, but it does not carry the strictly defined semantics of OWL. Thus it is ideal for representing those types of KOS, such as thesauri, that cannot be mapped directly to an OWL ontology. SKOS is also easier to use, and harder to misuse than OWL, providing an ideal entry point for those wishing to use the Semantic Web for knowledge organisation.