Representing Event Assertions in an Upper Event Ontology

This paper presents an upper event ontology under Conceptual Structure Theory with an emphasis on formalizing the event relation type hierarchy of the ontology to enable representation and classification of event assertions. The proposed ontology essentially consists of an event type hierarchy created from basic event assertions, an event relation type hierarchy built from predicates on event types and other formal relationships between these structures. Representation of event assertions enables inference on events, which can be used in the Semantic Web for automated inference and query answering.