Wikidata:Property proposal/main subject for

main subject for

Originally proposed at Wikidata:Property proposal/Generic

   Not done

Description	indicates the groups of items this item acts as a main subject for
Data type	Item
Domain	item
Allowed values	instance of (P31) of data set (Q1172284)
Example 1	Kalmar County (Q103707) → open data of Riksdagen (Q108560253)
Example 2	Erb-b2 receptor tyrosine kinase 2 (Q415271) → scholarly articles in Wikidata (Q108560274)
Example 3	non-metastatic breast cancer (Q108528891) → scholarly articles in Wikidata (Q108560274)
Planned use	to create a controlled vocabulary of items used as main subjects in the 2 datasets above
See also	main subject (P921): primary topic of a work (see also P180: depicts)

Motivation

This could help us keep a controlled vocabulary of main subjects in Wikidata for the imported datasets like the 2 in the examples above--So9q (talk) 09:28, 16 September 2021 (UTC)

Discussion

Ainali salgo60 Belteshassar so9q Vätte Popperipopp Tulipasylvestris Esquilo Daniel Mietchen — with focus on topics related to research (Q42240) VisbyStar Haxpett QubeCube Marcus.linneberg Vitplister Spisen Sollentuna Myohmy671 Autom S4b1nuz E.656

Notified participants of WikiProject Sweden

• Would all items for people end up having "main subject for": scholarly articles in Wikidata (Q108560274) ? --- Jura 09:46, 16 September 2021 (UTC)

  If I understand the proposal correctly (which I am not sure I do), only people that are tagged with main subject (P921) on a scholarly article. Ainali (talk) 10:12, 16 September 2021 (UTC)

  • Currently that is 8078 items, but I'm not sure how that is a meaningful subset and why we'd need the statement in addition to the query. --- Jura 10:19, 16 September 2021 (UTC)

  Exactly like Jan puts it, was the idea. So the idea is to have a sort of controlled vocabulary of items that are used as main subject. I'm not sure myself if this is needed, but if we want a controlled vocabulary, it is one way to do it. To be honest, the query from Jura is enough for me personally. If we ever get the scientific community engaged on Wikidata it might make more sense to have some sort of agreements of what constitutes a valid subject and what does not.--So9q (talk) 15:26, 17 September 2021 (UTC)

•  Oppose I don't think this is scoped properly. "main subject for" (or "main subject of") would logically be the inverse relationship of "main subject". That does not need to have a property, it could simply have an inverse label item created. In an item for any given subject, I don't think we want to specify every work that is about that subject. UWashPrincipalCataloger (talk) 16:10, 16 September 2021 (UTC)
•  Oppose per UWashPrincipalCataloger. Mahir256 (talk) 16:42, 16 September 2021 (UTC)
•  Comment Actually, I just discovered that main subject of (Q70782961) already exists. You can see it in action by choosing a subject item and clicking on "show derived statements" at the bottom of the page. For examples, view rainforest ecology (Q105441712) or Nancy (Q2373170), then click "show derived statements" at the bottom of the page. If you don't see the link, you can go into your user preferences and in gadgets, click the box for "relateditems: Adds a button to the bottom of item pages to display inverse statements." UWashPrincipalCataloger (talk) 18:03, 17 September 2021 (UTC)
•  Comment I suppose it could work out to design a suggestor for values to use in preference with main subject (P921).
  However, the domain of all scholarly articles in Wikidata (Q108560274) might be too large for this, maybe for open data of Riksdagen (Q108560253) is possible. --- Jura 14:57, 19 September 2021 (UTC)
•  Not done - no support for the proposal --DannyS712 (talk) 01:05, 2 January 2022 (UTC)