to all of WordNet
generation templates for Hindi, Chinese, Italian, German, Czech and English
- Tool support for browsing and editing
- Largest free, formal ontology available, with ~25,000 terms and ~80,000 axioms when
all domain ontologies are combined. These consist of
the MId-Level Ontology (MILO),
and ontologies of
countries and regions,
distributed computing and
Shopping catalogs and
North American Industrial Classification System,
people and their
transportation and its
world airports A-K,
world airports L-Z,
weapons of mass destruction.
See also a large amount of instance content from DBPedia about
people and the
YAGO, project which includes
millions of facts from Wikipedia merged with SUMO, and an initial merge of the Mondial
data with SUMO. The Open Biomedical Ontologies are being mapped to SUMO.
Additional ontologies of terrorism are available on request.
- Richly axiomatized, not just a taxonomy. All terms are formally defined. Meanings are
not dependent on a particular inference implementation. An inference and ontology
management system however is provided.
An additional system that supports visual editing,
and does a better job of displaying the ontologies, especially
in non-Western languages is the
|Documentation and other resources||
Order a copy of the new book "Ontology: A Practical Guide"
for $25+tax/shipping (international customers should
email me first to get shipping costs)
Using SUMO on a project already? Some 5000 unique domains
use the online Sigma browser every month.
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to help us continue providing support and improvements.