[crm-sig] Re:TOPOLOGY
martin
martin at ics.forth.gr
Tue Oct 2 17:53:28 EEST 2001
Dear All,
Here a proposal to model spatiotemporal relationships:
All temporal relationships between Temporal Entities are defined
through the relationships of their associated time-spans via
Allen operators:
before
after
equal
meets
met_by
overlaps
overlapped_by
during
contains
starts
Definitions see e.g.
Martin Doerr & Anthi Yiortsou,
Implementing a Temporal Datatype,
Technical Report FORTH-ICS/TR-236, 16 pages, November 1998.
Available: compressed ps file (49 KB). http://www.ics.forth.gr/proj/isst/Publications/paperlink/implementing_a_temporal_datatype.ps.gz
For spatial relationships:
Place
borders with: Place
overlaps with: Place
For spatiotemporal relationships:
Period
overlaps with: Period.
falls within : Period (existing)
A scope note must distinguish between the part-of
relationship of Period (consists of) and the Spatiotemporal!!! "falls within"
I argue that these are enough on a metadata level, and can support
complex reasoning already.
best,
Martin
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Dr. Martin Doerr | Vox:+30(81)391625 |
Senior Researcher | Fax:+30(81)391609 |
Project Leader SIS | Email: martin at ics.forth.gr |
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Centre for Cultural Informatics |
Information Systems Laboratory |
Institute of Computer Science |
Foundation for Research and Technology - Hellas (FORTH) |
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