Knowledge Systems Laboratory, Stanford University
11
Relations on Time-Interval
uJames Allen defined a “complete” set of relations on time intervals
„Precedes:  |————| End-1 < Start-2
„ |——————|
„Meets:            |————| End-1 = Start-2
„ |——————|
„Overlaps:             |————| Start-1 < Start-2 < End-1
„ |——————|
„Costarts: |————| Start-1 = Start-2
„ |——————|
„During:     |————| Start-2 < Start-1
„ |——————| End-1 < End-2
„Cofinishes: |————| End-1 = End-2
„ |——————|
„Equal