On 11/05/2018 08:50, Martin Doerr wrote: > Dear Richard, > > Following the latest extensions of the scope note of E4 Period, a > geopolitical entity is indeed regarded as a case (type, > specialization) of E4 Period. Since E4 Period IsA E92 spacetime > volume, its projection at some time or at all times is an > E53 Place. See respective properties, they should covers all cases: > P161, E93, P164. > > So, multiple inheritance yes, but with E92, not E53. Martin,
Thanks. I have now found the CRMgeo documentation, and I'm working my way through it ... Best wishes, Richard > > Best, > > Martin > > On 5/11/2018 12:47 AM, Richard Light wrote: >> >> Hi, >> >> I'm wanting to encourage a colleague to use a CRM-based approach to a >> geographical-themed project. We're talking about geopolitical [and >> geographical] entities which have a known duration (e.g. 'Abingdon >> from the 17th century until local government reorganisation in 1974'). >> >> This could be modelled as a subclass of E4 Period, which neatly binds >> together the place and time aspects we want to record. Conversely it >> could be modelled as a subclass of E53 Place, which would allow us to >> express relationships between this entity and other geopolitical >> units using existing properties. I see that there are precedents in >> the CRM for declaring a class as being a subclass of two different >> classes (e.g. E45 Address). However I am concerned about the fact >> that E4 Period already has 'place-ness' inherent in it. Should I be >> worried? Are there any guidelines I should be looking at? >> >> Many thanks, >> >> Richard >> >> -- >> *Richard Light* >> >> >> _______________________________________________ >> Crm-sig mailing list >> [email protected] >> http://lists.ics.forth.gr/mailman/listinfo/crm-sig > > > -- > -------------------------------------------------------------- > Dr. Martin Doerr | Vox:+30(2810)391625 | > Research Director | Fax:+30(2810)391638 | > | Email: [email protected] | > | > 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 | > | > Web-site: http://www.ics.forth.gr/isl | > -------------------------------------------------------------- > > > _______________________________________________ > Crm-sig mailing list > [email protected] > http://lists.ics.forth.gr/mailman/listinfo/crm-sig -- *Richard Light*
