An interval-based representation of temporal knowledge

  • Authors:
  • James F. Allen

  • Affiliations:
  • Department of Computer Science, The University of Rochester, Rochester, NY

  • Venue:
  • IJCAI'81 Proceedings of the 7th international joint conference on Artificial intelligence - Volume 1
  • Year:
  • 1981

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Abstract

This paper describes a method for maintaining the relationships between temporal intervals in a hierarchical manner using constraint propagation techniques. The representation includes a notion of the present moment (i.e., "now"), and allows one to represent intervals that may extend indefinitely into the past/future. This research was supported in part by the National Science Foundation under Grant Number IST-80-12418, and in part by the Office of Naval Research under Grant Number N00014-80-O0197.