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
is free and owned by the IEEE. The ontologies that extend SUMO are available
under GNU General Public License.
Adam Pease is the
Technical Editor of SUMO.
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