Property talk:P9541

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MacArthur Fellows Program ID
identifier for a MacArthur Fellows Program person

Associated item	John D. and Catherine T. MacArthur Foundation (Q1424691), John D. and Catherine T. MacArthur Foundation (Q1424691)
Applicable "stated in" value	MacArthur Fellows Program (Q1543268)
Data type	External identifier
Allowed values	class-of-([a-z]+-)?(19|20)[0-9]{2}/[a-z]+(-[a-z]+)+
Example	Chimamanda Ngozi Adichie (Q230141) → class-of-2008/chimamanda-adichie Muriel S. Snowden (Q14948836) → class-of-1987/muriel-s-snowden Polina Lishko (Q61142586) → class-of-2020/polina-v-lishko
Source	https://www.macfound.org/fellows/search
Formatter URL	https://www.macfound.org/fellows/$1/
Related to country	United States of America (Q30) (See 762 others)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Mix'n'match (Report) Database reports/Constraint violations/P9541 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,309 Main statement 2,119 out of 1,061 (200% complete) 91.8% of uses Qualifier 3 0.1% of uses Reference 187 8.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9541#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9541#Unique value, SPARQL (every item), SPARQL (by value)

Item “instance of (P31): human (Q5)”: Items with this property should also have “instance of (P31): human (Q5)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P9541#Item P31, hourly updated report, search, SPARQL

Item “occupation (P106)”: Items with this property should also have “occupation (P106)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9541#Item P106, search, SPARQL

Format “class-of-([a-z]+-)?(19|20)[0-9]{2}/[a-z]+(-[a-z]+)+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Julia Hall Bowman Robinson (Q452116)
List of violations of this constraint: Database reports/Constraint violations/P9541#Format, SPARQL

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9541#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

List of violations of this constraint: Database reports/Constraint violations/P9541#Entity types, hourly updated report

Questions/issues

I think this property might need an update or two. I think the identifier used on their website changed recently from a numeric id, to more descriptive url slug that contains both the 'year' and the name of the recipient. But that neither are really stable ids, but rather both just artifacts of their web design of the time. The older ids currently redirect to the new ones if used with a / at the end, but I'd guess there's no guarantee of that continuing in the future. There's also a 3rd id that seems internal to their cms system e.g. https://www.macfound.org/fellows/news?fellow=161813 and no way I've found to use that to take you directly to the fellow page.

i've noticed at least one name where a letter has been stripped out in the url:

https://www.macfound.org/fellows/class-of-2017/jason-de-leon doesn't work but https://www.macfound.org/fellows/class-of-2017/jason-de-len does

While both of these work: https://www.macfound.org/fellows/class-of-2012/an-my-l https://www.macfound.org/fellows/class-of-2012/an-my-le

I'm not really sure how to proceed, but the general idea I have is:

• add all the new url based ids via an upload to mix'n'match
• update the rules to include some oddities in the early awards like https://www.macfound.org/fellows/class-of-june-1981/henry-louis-gates-jr
• they also have the date of the award and some other info available which could be used on the award property.
• Possibly retain the old id number as a seperate id or a deprecated value? And mark it so that it only works up till the last number that redirects?

https://mix-n-match.toolforge.org/#/catalog/4772 is a new upload of the data to mix'n'match:

--Witidaka (talk) 07:59, 20 October 2021 (UTC)

@Witidaka: I originally decided to remove the values, but realized that another idea would be to do something similar to Wikidata:Property proposal/NFL.com ID (new scheme): create a separate property for the new identifiers, tag this property as Wikidata property for a former identification scheme (Q108951239) and redirect this property's links to the Wayback Machine (provided all the links there were archived). ミラP@Miraclepine 15:10, 20 October 2021 (UTC)

The site seems well archived in the wayback machine, so this seems doable and sensible to me. Is there a standard process for this? I think I can handle making the changes in a fairly automated way, but don't want to just start doing stuff if it'll annoy someone and get reverted later. Witidaka (talk) 21:23, 20 October 2021 (UTC)

@Witidaka: The process for property proposal is at Wikidata:Property proposal (aptly named I might add), though you should read Help:Properties#Creating_properties and (for inspiration) previous property proposals first. Succeed with your proposal, and then you may proceed with the automated changes provided they are consistent with the new property. ミラP@Miraclepine 23:32, 20 October 2021 (UTC)