Suggested Upper Merged Ontology
The Suggested Upper Merged Ontology is an upper ontology intended as a foundation ontology for a variety of computer information processing systems. SUMO defines a hierarchy of classes and related rules and relationships. These are expressed in a version of the language SUO-KIF which has a LISP-like syntax. A mapping from WordNet synsets to SUMO has been defined. Initially, SUMO was focused on meta-level concepts, and thereby would lead naturally to a categorization scheme for encyclopedias. It has now been considerably expanded to include a mid-level ontology and dozens of domain ontologies.
SUMO is organized for interoperability of automated reasoning engines. To maximize compatibility, schema designers can try to assure that their naming conventions use the same meanings as SUMO for identical words. SUMO has an associated open source Sigma knowledge engineering environment.
Initially, Sumo was developed by the Teknowledge Corporation and now is maintained by . SUMO is open source. The first release was in December 2000.
