Wikidata:Property proposal/Model item
model item
[edit]Originally proposed at Wikidata:Property proposal/Generic
Description | Defines which item is a best practice example of modelling a subject, which is described by the value of this property |
---|---|
Data type | Item |
Allowed values | Items |
Example 1 | human (Q5) → Douglas Adams (Q42) |
Example 2 | politician (Q82955) → Nelson Mandela (Q8023) |
Example 3 | animated film (Q202866) → Zootopia (Q15270647) |
Planned use | Record model items for all of the most used classes on Wikidata, then gradually expand over time to include more granular concepts |
Expected completeness | always incomplete (Q21873886) |
See also | Wikidata:Property proposal/Model item for |
Motivation
[edit]Defines which item is a best practice example of modelling a subject, which is described by the value of this property. Providing best practice examples linked from the subject will make it much easier for people to understand how to model types of items, especially new people. It will also allow a central place to decide how to model certain kinds of items.
By modelling this within the structure of Wikidata rather than in Wikiprojects the structure is multilingual. Also looking at where the model item refers to the concept we can run a standard query that will work for most cases to find all the items that the model applies to, this is not limited to ‘instance of’. This could be used to check which items do and do not have high importance statements, e.g authors without a date of birth.
This could later be complemented with another property which defines the schema for a class of item (e.g author or politician)
This property requires that the inverse property model item for also be accepted to be most useful.
Thanks
John Cummings (talk) 20:19, 11 September 2018 (UTC)
Discussion
[edit]- Support - NavinoEvans (talk) 21:07, 11 September 2018 (UTC)
- Support not sure about this one - maybe "badges" are better? Or is this for just "one" iconic model item (we will never agree on which one I think) – The preceding unsigned comment was added by Jane023 (talk • contribs).
- Support David (talk) 08:20, 12 September 2018 (UTC)
- Support picking one model could be difficult, maybe we could have multiple values but please keep them limited to a small set (too many models could be as confusing as no model at all). VIGNERON (talk) 08:35, 12 September 2018 (UTC)
- Comment I think there should be models for various depths in a particular field. Looking at the full one might just be overwhelming. --- Jura 11:38, 12 September 2018 (UTC)
- @Jura1: Agreed, there could be a model item for 'author' and model items for '20th century French Author', 'Academic author', 'ghost writer' etc. These items are best practice examples which reflect an agreed schema, they would most probably not be the record of the schema (I'm working on that part next). --John Cummings (talk) 12:28, 12 September 2018 (UTC)
- With depth I mean less than 100 statements. 10/20/50 etc. --- Jura 20:42, 12 September 2018 (UTC)
- @Jura1: Agreed, there could be a model item for 'author' and model items for '20th century French Author', 'Academic author', 'ghost writer' etc. These items are best practice examples which reflect an agreed schema, they would most probably not be the record of the schema (I'm working on that part next). --John Cummings (talk) 12:28, 12 September 2018 (UTC)
- Support Strikes me as a useful pairing wihh the inverse property. Richard Nevell (talk) 12:43, 12 September 2018 (UTC)
- Support John Samuel 17:35, 12 September 2018 (UTC)
- Support --Sabas88 (talk) 18:24, 12 September 2018 (UTC)
- Support - PKM (talk) 19:32, 12 September 2018 (UTC)
- Support --Zyksnowy (talk) 20:39, 12 September 2018 (UTC)
- Support Useful! Ijon (talk) 08:52, 13 September 2018 (UTC)
- Support Useful, particularly with inverse property. We point people, particularly newbs, towards featured articles on Wikipedia for examples of best practice - would be extremely beneficial to have an accepted good exemplar of a featured/model item for modelling certain data models on Wikidata. e.g. RMS Titanic for ships? Stinglehammer (talk) 10:27, 13 September 2018 (UTC)
- Support Yeah, can see this one being useful, esp for beginners. Lirazelf (talk) 11:07, 13 September 2018 (UTC)
- Support - Llywelyn2000 (talk) 11:14, 13 September 2018 (UTC)
- Support - very useful Jason.nlw (talk) 13:22, 13 September 2018 (UTC)
- Comment Will there be a single value constraint, who decides which value to choose, why Douglas Adam and not Barack Obama? Nepalicoi (talk) 12:22, 17 September 2018 (UTC)
- @Nepalicoi:, thanks very much for the questions. I think value constraints should be dependent on wether we can find a good way to model schemas within Wikidata items, or wether model items become in effect schemas for subjects (I'm currently trying to work out a good way to model schemas). I think the decision on which are model items should be a community decision, the most sensible way of doing this is probably a discussion on the talk page for the class item (e.g the item for author). The examples are just for illustration, they are not the decided. --John Cummings (talk) 14:44, 17 September 2018 (UTC)
- I feel like it's becoming a list of items for which Sparql should be used, see Americans (Q846570) or planet (Q634) which has 10 or so values. There needs to be some constraint to prevent it from becoming a huge list of items. Nepalicoi (talk) 13:56, 26 September 2018 (UTC)
- @Nepalicoi:, thanks very much for the questions. I think value constraints should be dependent on wether we can find a good way to model schemas within Wikidata items, or wether model items become in effect schemas for subjects (I'm currently trying to work out a good way to model schemas). I think the decision on which are model items should be a community decision, the most sensible way of doing this is probably a discussion on the talk page for the class item (e.g the item for author). The examples are just for illustration, they are not the decided. --John Cummings (talk) 14:44, 17 September 2018 (UTC)
@ديفيد عادل وهبة خليل 2, Richard Nevell, Ijon, Nepalicoi, NavinoEvans, Lirazelf: @Llywelyn2000, Zyksnowy, PKM, Jason.nlw, Stinglehammer, Sabas88: @VIGNERON, John Cummings, Jura1: Done: model item (P5869). − Pintoch (talk) 21:33, 20 September 2018 (UTC)