Absolutely correct!:-)
On 7/17/2019 11:05 PM, Robert Sanderson wrote:
And to depict it diagrammatically, I think it’s this…
*From: *Crm-sig <[email protected]> on behalf of Robert
Sanderson <[email protected]>
*Date: *Wednesday, July 17, 2019 at 12:23 PM
*To: *Martin Doerr <[email protected]>, crm-sig <[email protected]>
*Subject: *Re: [Crm-sig] Help wanted - Understanding P120 versus P183
Many thanks for the explanation! To make sure that I’ve understood …
P120 is only able to be used when the E52 Time-Span of the range and
domain E2 Temporal Entities, has the same begin_of_the_begin as its
end_of_the_begin, and begin_of_the_end and end_of_the_end. Or in pure
CRM terms, that the value of the E61 Time Primitive of the Time-Span’s
P81 and P82 Time Primitives are identical. Otherwise, the property
P183 must be used instead.
Is that correct?
Rob
*From: *Crm-sig <[email protected]> on behalf of Martin
Doerr <[email protected]>
*Date: *Wednesday, July 17, 2019 at 12:04 PM
*To: *crm-sig <[email protected]>
*Subject: *Re: [Crm-sig] Help wanted - Understanding P120 versus P183
Dear Robert,
P120 belongs to Allen's logic, which is deprecated. Allen's logic
assumes exact endpoints in time, whereas P183 makes the fuzzy zone
explicit. As such, P120 only coincides with P183 if the fuzziness is
zero. Therefore, P183 is more general than P120.
Following CRMgeo, only declarative time spans can have precise
endpoints in time. In reality, they occur in plans, administrational
decisions, artificial constraints of focus and queries.
Since Allen's terms are useful for archaeology, but not with exact
endpoints in time, the respective terms should be reintroduced in
CRMarcheo extended by fuzzy boundaries.
Indeed, transitivity was not mentioned explicitly and should be added
in the scope note (issue!)
All the best,
Martin
On 7/15/2019 7:55 PM, Robert Sanderson wrote:
Dear all,
The diagrams in the newer temporal properties as to how temporal
spans A and B relate are enormously useful in understanding the
distinctions between them.
The question that we ran into was the distinction between P120
occurs before and P182 / P183, and which one to use. In
particular, we could not distinguish between P120 and its super
property, P183.
Both imply some minimal temporal gap between the end of the first
and the beginning of the second. Both position the entities
temporally in the same order. Perhaps more importantly, between
P182 (End of A is less than or equal to the start of B) and P183
(End of A is less than start of B), it seems like there are no
other possibilities?
Indeed, P183 corresponds to Allen’s {before}, as does P120. P183
does not directly assert that it is transitive, but the temporal
logic makes it such.
If there is a difference, between the two, it would be lovely to
understand. And a diagram would be very helpful in explaining that
difference. If there isn’t a difference, it seems that P183 could
be deprecated in favor of the longer standing P120.
Many thanks!
Rob
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Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
GR70013 Heraklion,Crete,Greece
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Email:[email protected] <mailto:[email protected]>
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--
------------------------------------
Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
GR70013 Heraklion,Crete,Greece
Vox:+30(2810)391625
Email:[email protected] <mailto:[email protected]>
Web-site:http://www.ics.forth.gr/isl
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the content is safe.*
--
------------------------------------
Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
GR70013 Heraklion,Crete,Greece
Vox:+30(2810)391625
Email: [email protected]
Web-site: http://www.ics.forth.gr/isl
