Thanks Thanasis. Yes, there's various dimensions that are associated with non-Things, and I agree that Place is particularly easy to justify.
Place: Area. The county of Los Angeles has a dimension of 4751 square miles. If the place is approximate, then the radius of a centroid would be an obvious dimension to record, or height/width for bounding box defined Places. Time-Span: Duration is already a property of a Time-Span that refers to a dimension (P191). This could then be a subproperty of P43, or deprecated in favor of a classification on the Dimension. Temporal Entity and Spacetime Volume are a bit strange in relation to Time-Span. Does the Period have the duration or the Time-Span, or both? What if they're different Conversely Dimensions seem like they should not have Dimensions. Rob On Wed, Sep 9, 2020 at 10:33 AM Athanasios Velios <thana...@softicon.co.uk> wrote: > Good point, but it seems to me that being able to measure a Place is > pretty important. Otherwise we have to measure through the physical > object/site reference or the declarative space as part of a conceptual > thing. > > Thanasis > > > > On 09/09/2020 13:39, Robert Sanderson wrote: > > > > Dear all, > > > > I believe that there is an inconsistency in the model for measurements > > and dimensions. > > > > E54 Dimensions are associated directly with E70 Things using P43 has > > dimension. So not every class can have dimensions, only those that are > > descendents of E70. > > > > However E16 Measurement's property P39 measured has a range of E1 CRM > > Entity, meaning that while (for example) an E53 Place cannot have a > > dimension, it can be measured to have a dimension. This seems > > inconsistent that an entity that cannot have dimensions can still be > > measured. > > > > I propose that the range of P39 measured be changed to E70 Thing to > > resolve this inconsistency. > > > > I would also be okay with the other direction by changing the domain of > > P43 has dimension to be E1 CRM Entity, however that seems like a much > > more significant change, and would result in quite strange side effects > > such as Dimensions having Dimensions. > > > > Rob > > > > -- > > Rob Sanderson > > Director for Cultural Heritage Metadata > > Yale University > > > > _______________________________________________ > > Crm-sig mailing list > > Crm-sig@ics.forth.gr > > http://lists.ics.forth.gr/mailman/listinfo/crm-sig > > > _______________________________________________ > Crm-sig mailing list > Crm-sig@ics.forth.gr > http://lists.ics.forth.gr/mailman/listinfo/crm-sig > -- Rob Sanderson Director for Cultural Heritage Metadata Yale University
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