Property talk:P7947

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WeChangEd ID
identifier for an item in the WeChangEd database of Women Editors in Europe

Applicable "stated in" value	WeChangEd (Q86999151)
Data type	External identifier
Domain	human (Q5), organization (Q43229) or periodical (Q1002697)
Allowed values	wcd_\d+_id
Example	Catherine Impey (Q5052746) → wcd_00196_id Elsbeth Krukenberg (Q1333577) → wcd_01082_id Isabel Oyarzábal Smith (Q5573879) → wcd_00908_id
Source	https://www.wechanged.ugent.be/
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 Database reports/Constraint violations/P7947 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 3,657 Main statement 3,653 99.9% of uses Qualifier 3 <0.1% of uses Reference 1 <0.1% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

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/P7947#Unique value, SPARQL (every item), SPARQL (by value)

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/P7947#Single value, SPARQL

Format “wcd_\d+_(id|pid|oid)”: 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).
List of violations of this constraint: Database reports/Constraint violations/P7947#Format, SPARQL

Type “human (Q5), organization (Q43229), periodical (Q1002697)”: item must contain property “instance of (P31)” with classes “human (Q5), organization (Q43229), periodical (Q1002697)” or their subclasses (defined using subclass of (P279)). (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/P7947#Type Q5, Q43229, Q1002697, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (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/P7947#Entity types

How to use this property

@YULdigitalpreservation: I am not convinced this property adds value but its used on many places as a reference but I dont see what added value it does. Any update/Timeplan? Should we delete it? - Salgo60 (talk) 08:09, 2 September 2020 (UTC)

Sent in a question to wechanged - Salgo60 (talk) 08:14, 2 September 2020 (UTC)

• @Salgo60: We should keep this property. This property is useful for researchers working in literary studies, periodical studies, historians, and beyond. This property allows people who reuse data from Wikidata via the SPARQL endpoint to write queries related to this dataset. Prior to contributing their data to Wikidata it was in an offline database. Now that they have contributed it to Wikidata, researchers working with this data can ask questions of it that were previously not possible. SPARQL queries related to this data are more concise to write because of the existence of this property. YULdigitalpreservation (talk) 11:44, 2 September 2020 (UTC)
  • @YULdigitalpreservation: thanks for the answer. The anti-pattern I see is that they use this property as reference for facts which then in Worst case will be seen in the Wikipedia articles as a reference that we never can check - Salgo60 (talk) 12:12, 2 September 2020 (UTC)
    • @Salgo60: My memory of constructing the references is that we reference the item for the research project and provide a link to the google sheets version of exported data from their database. Could you please point to an example of where this property is used in a reference? YULdigitalpreservation (talk) 13:07, 2 September 2020 (UTC)

@YULdigitalpreservation: thanks for fast answer I will come back. Related question I will have a short session on the next editorial meeting of a Swedish women dictionary see en:Svenskt_kvinnobiografiskt_lexikon I will try to convince them move direction linked data so if you have good research examples or more information what WeChangEd do I am more than glad. RTegards Magnus Sälgö 00465705937579, salgo60@msn.com - Salgo60 (talk) 08:22, 3 September 2020 (UTC)

@Salgo60: The new project you mentioned sounds great! I can offer WeChangEd's interative Stories app and ScienceStories. Fingers crossed they take your suggestion! YULdigitalpreservation (talk) 12:16, 3 September 2020 (UTC)

refs to WebChendEd

• @YULdigitalpreservation: example Q4948629#P569 of when a ref has been added not using the property but a link to WeChangEd (Q86999151) using a link https://www.wechanged.ugent.be/wechanged-database/ that will be displayed in a Wikipedia article but adds no value to confirm date of birth (P569) - Salgo60 (talk) 08:13, 8 September 2020 (UTC)

@Salgo60: Thank you for providing the example. That helps me understand. It is great to see the infoboxes reusing Wikidata. The reason we link to that page is that there are 3 .csv files available on that page that are exports from the WeChangEd database. The birthdates for people are available in the "WeChangEd Persons" file. YULdigitalpreservation (talk) 11:37, 9 September 2020 (UTC)

• @YULdigitalpreservation: Another one Q10589088#P571 were you duplicate the same value as was before but wIth your "source" --> we get two dates see changelog - Salgo60 (talk) 00:50, 12 September 2020 (UTC)
• adding a date with less good precision than what we already have with better sources see Q4766181#P569 - Salgo60 (talk) 10:14, 14 September 2020 (UTC)

  The link https://www.wechanged.ugent.be/wechanged-database/ now gives a 404, not very useful at all. -- Sturban (talk) 06:52, 28 October 2021 (UTC)