SUMO - The Standard Upper Merged Ontology

Overview

• Three parts
  • Upper structural ontology - bootstrapping and commonsense
  • Mid-level base ontology - extended commonsense
  • Domain ontologies - each for a specific domain of knowledge
    Economy ... Transportation ... Geography ... WMD ...
• Written in Standard Upper Ontology Knowledge Interchange Format (SUO-KIF)

Features

• Mostly first-order, but some genuinely higher-order constructs
• Sort information
• Sequence variables
• Reflection
• Integrated documentation