Version : (draft),

Latest Version :

Published : 29 November 2010

Authors : Andrea Wei-Ching Huang and Tyng-Ruey Chuang


The General Event Relation (GER) asserts that a certain event occurred and determined by its four basic relations, namely, identity relation, temporal relation, spatial relation and cause relation. Event is also partly determined by the fifth GER that is an exceptional relation which may be stated or not.

You may see our presentation in the case of disaster information management at the PNC 2010 Annual Conference: An Event Ontology for Crisis-Disaster Information And we thank the PNC Community for giving us many useful discussions and sound suggestions. We will add your recommended websites in the “List of Ontologies Over the Web” soon.



  • Event: A significant happening which at least has four general relation statements and one possible relation described below.


  • identity relation: representation of an Event which makes it definable and recognizable.
  • temporal relation: express the relation which is relating to or limited by time.
  • spatial relation: express the relation which is relating to or limited by space, place, or location.
  • cause relation: express the relation that any entity makes an event happen or is responsible for event results.
  • exceptional relation: express the relation which is a noteworthy addition to the event but has not mentioned in the four basic GERs above.

Relation Instances

  1. identity relation: is-a, isAbout,defines, occurs, exists, classifies express, describes, isRelatedTo, sameAs, hasThematicRelation, according to …
  2. temporal relation: hasTime, timeInterval, time-span (in, precedence relation, before, after, …), during, timestamp, eventDate, beging, end, since, nextTo, overlap, …
  3. spatial relation: place, region, space, location, hasBoundary, nearTo, direction, overlap, placeName…
  4. cause relation: cause, result, become, factor, agent, actor, action, activities, impact, consequence, result, participant, role, product, instrument, task,…
  5. exceptional relation: isPartOf, hasSubEvent, hasComponent, hasMember, unifies, includes, involves, transitive, symmetric, negative, opposite, contextualizing, interpretation, certainty, …

List of Ontologies Over the Web


ger:home Last modified: 2010/12/20 15:28