Property talk:P4787

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NII author ID
identifier for an author/researcher in scholarly literature databases operated by National Institute of Informatics (NII), Japan

Represents	NII author ID (Q119217575)
Associated item	National Institute of Informatics (Q4346622)
Applicable "stated in" value	CiNii (Q10726338)
Data type	External identifier
Domain	person or organization (Q106559804)
Allowed values	[1-9]\d{12}
Example	Shizumu Nomura (Q47393070) → 9500363887724 Isamu Akasaki (Q1673706) → 1000020144115 8000001963524
Formatter URL	https://ci.nii.ac.jp/nrid/$1
Tracking: usage	Category:Pages using Wikidata property P4787 (Q55919506)
Related to country	Japan (Q17) (See 145 others)
See also	NACSIS-CAT author ID (P271), NII article ID (P2409), NACSIS-CAT bibliography ID (P1739), CiNii Research ID (P11496)
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 Database reports/Constraint violations/P4787 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,871 Main statement 2,861 99.7% of uses Qualifier 3 0.1% of uses Reference 7 0.2% of uses
Search for values

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

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/P4787#Entity types

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/P4787#Scope, SPARQL

Format “[1-9]\d{12}”: 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/P4787#Format, 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/P4787#Unique value, SPARQL (every item), SPARQL (by value)

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

List of violations of this constraint: Database reports/Constraint violations/P4787#Item P31, hourly updated report, search, SPARQL

Type “person or organization (Q106559804)”: item must contain property “instance of (P31)” with classes “person or organization (Q106559804)” 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). Known exceptions: Kizuna AI (Q29515292), UNI Akatsuki (Q60988698)
List of violations of this constraint: Database reports/Constraint violations/P4787#Type Q106559804, SPARQL

Conflicts with “instance of (P31): Wikimedia disambiguation page (Q4167410), Wikimedia category (Q4167836), Wikimedia list article (Q13406463), Wikimedia template (Q11266439), Wikimedia module (Q15184295)”: this property must not be used with the listed properties and values. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4787#Conflicts with P31, hourly updated report, SPARQL

Conflicts with “NII article ID (P2409)”: this property must not be used with the listed properties and values. (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/P4787#Conflicts with P2409, search, SPARQL

Item “CiNii Research ID (P11496)”: Items with this property should also have “CiNii Research ID (P11496)”. (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/P4787#Item P11496, search, SPARQL

Pattern ^((?:DA|DB)\d{7}[\dX])$ will be automatically replaced to \1 and moved to NACSIS-CAT author ID (P271) property. Testing: TODO list

Pattern ^(1\d{18})$ will be automatically replaced to \1 and moved to CiNii Research ID (P11496) property. Testing: TODO list

This property is being used by: ja:Template:CiNii Articles 著者, ja:Template:研究者リゾルバー Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Some notes on this property

This property is now called "NII Author ID" in the official English document[1][2] (and NII著者ID in the Japanese document[3][4]). This is an ID for per-person entries for authors or researchers used in several NII projects, but multiple IDs are assigned to single person due to different data sources and/or difficulty in the reconciliation process. The first digit seems to have the meaning as follows: 1, the entry comes from e-Rad researcher number (P9776); 2, the entry comes from ReaD project (Directory Database of Research and Development Activities (Q11587552)); 8, for CiNii Dissertations (Q107529324); and 9, for automated reconciliation in now defunct CiNii Articles database. Mzaki (talk) 12:07, 25 July 2022 (UTC)