In addition to the Black Lunch Table project, which focuses on Visual artists from the African Diaspora, that James mentions below -- the GLAM projects for Colección Patricia Phelps de Cisneros ("CPPC") and WIKIarte, which focus on Latin American art, are both using the catalog P972 as well.

https://en.wikipedia.org/wiki/Wikipedia:GLAM/Colección_Patricia_Phelps_de_Cisneros/Tasks#Wikidata_task_lists
https://en.wikipedia.org/wiki/Wikipedia:WIKIarte/Tasks#Wikidata_task_lists

I want to be transparent about this usage. It has been incredibly impactful, and as CPPC prepares for a Commons donation of public domain images -- that are artworks -- and that have Creator templates and are fully Wikidata-ified, this catalog will be mission critical to tracking and querying the items.

Without this catalog property, it would be impossible to collocate the various projects. Especially as the metadata is not a large dataset, but is being painfully and manually input, often one by one. The metadata from the various sources is not in a dataset, and is constantly moving, changing, and expanding.

- Erika

Erika Herzog
Wikipedia User:BrillLyle

On Wed, Nov 29, 2017 at 8:22 PM, <fn@imm.dtu.dk> wrote:
Dario's 1-3 is fine by me. Rather than P361 (part of), I think - as James Heald - that P972 (catalog) would be better. It is also used for artworks, for instance,

https://www.wikidata.org/wiki/Q44015154 P972 https://www.wikidata.org/wiki/Q42661788

I see P972 and the associated identifier P528 as a kind of lightweight external identifier.

If the external dataset is available in RDF, then I suppose skos:exactMatch (P2888) can be used.

For some items available in other databases I have used "external data available at" P1325. But the semantics of that require some data at the other end.

---
Finn Årup Nielsen
http://people.compute.dtu.dk/faan/



On 11/25/2017 02:16 PM, James Heald wrote:


When a somewhat similar issue came up, re how to artists that were of interest the the "Black Lunch Table" project https://www.wikidata.org/wiki/Q28781198 that works on coverage of visual artists of the African diaspora, the solution adopted (after quite a vigorous debate at Project Chat) was to use property P972 "catalog" with the value Q28781198 to mark artists that were of interest to the project.

A similar approach could be used here, if a project has a list of works of interest, that it would be valuable to record inclusion in.

Best regards,

    James.