Dear all,
To avoid the complexity of querying for both directions in RDFS, during
the Linked Conservation Data project, all inverse properties were
automatically turned around. But I can see why this may be problematic
in some implementations.
All the best,
Thanasis
On 26/02/2026 09:33, Martin Doerr via Crm-sig wrote:
Dear All,
May I correct Wolfgang's proposal.
The issue is about formal encoding. RDFS distinguishes forward and
backward directions as distinct properties.
This had been amended in OWL with the construct inverse of. CIDOC CRM
regards the backward direction as a question of label reading and not a
ditinct identity. Therefore, P46i forms part of is *NOT* a different
property type from P46 is composed of. If "P46i forms part of" would
appear in a KB input in an E13 pattern, P140 and P141 should be turned
around and P177 adjusted to P46 via input S/W.
We had discussed this as a question of formal logic and identity of
properties.
Bet,
Martin
On 2/26/2026 10:37 AM, George Bruseker via Crm-sig wrote:
Dear Wolfgang,
Why is this? I have not heard of it before. Is it written?
Best,
George
On Thu, Feb 26, 2026 at 10:34 AM Schmidle, Wolfgang via Crm-sig <crm-
[email protected]> wrote:
Dear All,
Property types like "P46i forms part of" are not allowed in an
Attribute Assignment. Instead, it should be "P46 is composed of
(forms part of)". Since this isn't common knowledge, the E13 /
P140 / P141 / P177 scope notes should be amended to mention it.
Best,
Wolfgang
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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
Email:[email protected]
Web-site:http://www.ics.forth.gr/isl
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