Dear Martin, I see your point, thank you for the explanation. Maybe, this was also the motivation for introducing the property classes? (instead of using standard rdf reification): an instance of a property class intends to represent a specific relation in the real world, not a triple/statement in a knowledge base (as in the case of rdf:Statement <https://www.w3.org/TR/rdf-schema/#ch_reificationvocab>: *"An RDF statement is the statement made by a token of an RDF triple"*). If this is the case, I suggest including an explanation in the RDFS of the PCs.
Best, Pavlos On Sat, May 6, 2023 at 9:57 PM Martin Doerr via Crm-sig < crm-sig@ics.forth.gr> wrote: > Dear Pavlos, > > I don't think this is a good solution. Every statement in a knowledge base > is an information object. That does not say however, what it refers to in > the universe of discourse (or real world). The identity of the information > object is the RDF file. The identity of Michelangelo, as stated in the > file, means Michelangelo the person and not the URI as a string in that > file. Isn't it? > > This is still an issue to resolve: In CRMinf, a Proposition Set is > regarded as Information Object, but this is not what we actually mean, we > mean the "meaning" of that Information Object, i.e., its truth or not. As > such, CRMinf is inconsistent. This is, I think, Issue 614. > > Best, > > Martin > > On 5/6/2023 12:43 AM, Pavlos Fafalios via Crm-sig wrote: > > Dear George, > > An instance of a property class represents a statement / formal > proposition. Could we thus say that it is also an E73 Information Object? > Would multiple instantiation provide a solution to the problem you > describe? E.g.: > > :painting_sistine_chapel > crm:P14_carried_out_by :Michelangelo . > *:statement1* > a crm:PC14_carried_out_by, *crm:E73_Information_Object* ; > crm:P01_has_domain :painting_sistine_chapel ; > crm:P02_has_range :Michelangelo ; > crm:P14.1_in_the_role_of :master_craftsman . > :attrAssign1 > a crm:E13_Attribute_Assignment ; > crm:P140_assigned_attribute_to *:statement1* > ... ... ... > > Thoughts? > > Have a good weekend! > > Best, > Pavlos > > On Wed, Mar 29, 2023 at 4:36 PM George Bruseker via Crm-sig < > crm-sig@ics.forth.gr> wrote: > >> Dear all, >> >> When using the PC classes modelling structure we end up with a class node >> for a property which we can then modify with things like 'kinds' and >> 'modes' etc. >> >> Since such a statement has meaning and comes from somewhere [e.g.: that >> someone did something in some capacity (PC14 carried out by ... P02 has >> range E39 + P14.1 in the role of E55)] one sometimes needs to provenance >> this statement with an E13 attribute assignment. Ie we want to ground who >> made this claim. >> >> In theory this would be done with E13 pointing to the node in the typical >> fashion (p141, P140). However, the class PC0_Typed_CRM_Property is not >> declared as a subtype of E1 CRM Entity in the PC extension file. As a >> result we cannot do this. >> >> https://cidoc-crm.org/rdfs/7.1.1/CIDOC_CRM_v7.1.1_PC.rdfs >> >> I would argue PC0_Typed_CRM_Property should be declared a subclass of >> E1_CRM_Entity. Then it would be consistent with the rest of the modelling. >> >> Opinions? >> >> Best, >> >> George >> _______________________________________________ >> Crm-sig mailing list >> Crm-sig@ics.forth.gr >> http://lists.ics.forth.gr/mailman/listinfo/crm-sig >> > > > -- > Pavlos Fafalios > > Postdoctoral researcher > Centre for Cultural Informatics & Information Systems Laboratory > Institute of Computer Science - FORTH > > Visiting Lecturer > Department of Management Science & Technology > Hellenic Mediterranean University > > Web: http://users.ics.forth.gr/~fafalios/ > Email: fafal...@ics.forth.gr > Address: N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Greece > Tel: +30-2810-391619 > > > _______________________________________________ > Crm-sig mailing > listCrm-sig@ics.forth.grhttp://lists.ics.forth.gr/mailman/listinfo/crm-sig > > > > -- > ------------------------------------ > 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: mar...@ics.forth.gr > Web-site: http://www.ics.forth.gr/isl > > _______________________________________________ > Crm-sig mailing list > Crm-sig@ics.forth.gr > http://lists.ics.forth.gr/mailman/listinfo/crm-sig > -- Pavlos Fafalios Postdoctoral researcher Centre for Cultural Informatics & Information Systems Laboratory Institute of Computer Science - FORTH Visiting Lecturer Department of Management Science & Technology Hellenic Mediterranean University Web: http://users.ics.forth.gr/~fafalios/ Email: fafal...@ics.forth.gr Address: N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Greece Tel: +30-2810-391619
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