Ontologies reflect our view of what exists and deve loping ontologies for a given domain requires a common context. This context can be cha racterized explicitly by means of an upper ontology. Upper ontologies define top-level concepts... more
Ontologies reflect our view of what exists and deve loping ontologies for a given domain requires a common context. This context can be cha racterized explicitly by means of an upper ontology. Upper ontologies define top-level concepts such as physical objects, activities, mereological and topological relations from which more specific classes and relations can be defined. As an effort to
