Annotating and Reasoning about Time and Events
Jerry R. Hobbs, James D. Pustejovsky · 2005
Abstract The Semantic Web will necessarily require specification of temporal information. For example, someone who does a web search trying to find a place to buy a book needed before next Tuesday may or may not be able to use an online bookstore that promises delivery within five business days. Someone doing a genealogical search may want to specify that the birthdate of a person is between 15 and 45 years before a known marriage date. In response to this need, in connection with the DARPA-sponsored DAML program, we have been developing an ontology of temporal concepts, OWL- Time (originally DAML-Time), that covers the basic topological temporal relations on instants and intervals, measures of duration, and the clock and calendar (Hobbs, 2002).