As of 2022-03-07, the Wikidata property e-Rad researcher number (P9776) is used on 1,450 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P2671 Google Knowledge Graph ID 1,182
 0.0002
P214 VIAF ID 1,116
 0.0004
P349 National Diet Library ID 1,042
 0.0074
P7859 WorldCat Identities ID 956
 0.0005
P5029 Researchmap ID 835
 0.3809
P271 CiNii author ID (books) 821
 0.0095
P7783 J-GLOBAL ID 743
 0.3226
P213 ISNI 696
 0.0005
P244 Library of Congress authority ID 675
 0.0005
P5034 National Library of Korea ID 391
 0.0058
P227 GND ID 307
 0.0002
P1006 Nationale Thesaurus voor Auteurs ID 262
 0.0005
P269 IdRef ID 262
 0.0005
P5909 HKCAN ID 178
 0.0080
P1207 NUKAT ID 176
 0.0003
P268 Bibliothèque nationale de France ID 159
 0.0003
P496 ORCID iD 112
 0.0001
P646 Freebase ID 111
 0.0000
P3987 SHARE Catalogue author ID 93
 0.0005
P2002 Twitter username 92
 0.0003
P1015 NORAF ID 89
 0.0005
P2163 FAST ID 63
 0.0001
P691 NKCR AUT ID 63
 0.0001
P1153 Scopus author ID 59
 0.0001
P4787 CiNii author ID (articles) 57
 0.0308
P8189 National Library of Israel J9U ID 56
 0.0003
P1556 zbMATH author ID 55
 0.0012
P7293 PLWABN ID 49
 0.0001
P5361 BNB person ID 39
 0.0009
P549 Mathematics Genealogy Project ID 38
 0.0001
P949 National Library of Israel ID 36
 0.0005
P4955 MR Author ID 35
 0.0002
P1053 ResearcherID 34
 0.0001
P1960 Google Scholar author ID 31
 0.0005
P409 Libraries Australia ID 31
 0.0005
P2013 Facebook ID 27
 0.0001
P5380 National Academy of Sciences member ID 25
 0.0046
P6178 Dimensions author ID 25
 0.0002
P3829 Publons author ID 24
 0.0004
P1280 CONOR.SI ID 24
 0.0002
P3368 Prabook ID 24
 0.0001
P2428 RePEc Short-ID 23
 0.0025
P2381 Academic Tree ID 22
 0.0010
P3065 RERO ID 19
 0.0003
P2456 DBLP author ID 18
 0.0003
P1315 NLA Trove people ID 18
 0.0002
P2949 WikiTree person ID 16
 0.0001
P7902 Deutsche Biographie (GND) ID 15
 0.0000
P586 IPNI author ID 13
 0.0002
P428 botanist author abbreviation 13
 0.0002

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P5029 Researchmap ID 835
 0.3809
P7783 J-GLOBAL ID 743
 0.3226
P4787 CiNii author ID (articles) 57
 0.0308
P271 CiNii author ID (books) 821
 0.0095
P5909 HKCAN ID 178
 0.0080
P349 National Diet Library ID 1,042
 0.0074
P5034 National Library of Korea ID 391
 0.0058
P5380 National Academy of Sciences member ID 25
 0.0046
P8024 Nobel Laureate API ID 8
 0.0033
P6282 French Academy of Sciences member ID 5
 0.0027
P2428 RePEc Short-ID 23
 0.0025
P8418 Oberwolfach mathematician ID 5
 0.0018
P8580 NHK Archives Portal person ID 7
 0.0018
P4215 nLab ID 9
 0.0017
P1556 zbMATH author ID 55
 0.0012
P5776 Arnet Miner author ID 2
 0.0012
P5567 National Research Institute for Cultural Properties artist ID 5
 0.0011
P4862 Amazon author ID 8
 0.0011
P3413 Leopoldina member ID 8
 0.0011
P2381 Academic Tree ID 22
 0.0010
P1187 Dharma Drum Institute of Liberal Arts person ID 4
 0.0010
P2070 Fellow of the Royal Society ID 3
 0.0009
P5361 BNB person ID 39
 0.0009
P6023 ResearchGate contributions ID 6
 0.0009
P2536 Sandbox-External identifier 2
 0.0008
P4252 All-Russian Mathematical Portal ID 4
 0.0008
P3747 SSRN author ID 3
 0.0007
P864 ACM Digital Library author ID 3
 0.0007
P1563 MacTutor biography ID 3
 0.0007
P5948 CMI person ID 1
 0.0006
P9467 IAU member ID 1
 0.0006
P4016 SlideShare username 1
 0.0006
P6174 The World Academy of Sciences fellow ID 1
 0.0006
P5212 Armenian National Academy of Sciences ID 1
 0.0006
P9640 PAS member ID 1
 0.0006
P1015 NORAF ID 89
 0.0005
P3987 SHARE Catalogue author ID 93
 0.0005
P1960 Google Scholar author ID 31
 0.0005
P2930 INSPIRE-HEP author ID 7
 0.0005
P6325 Critique d'art ID 1
 0.0005
P7859 WorldCat Identities ID 956
 0.0005
P1006 Nationale Thesaurus voor Auteurs ID 262
 0.0005
P244 Library of Congress authority ID 675
 0.0005
P213 ISNI 696
 0.0005
P1375 NSK ID 11
 0.0005
P6698 Japan Search name ID 10
 0.0005
P3052 Bloomberg person ID 1
 0.0005
P269 IdRef ID 262
 0.0005
P5796 Internet Game Database person ID 1
 0.0005
P409 Libraries Australia ID 31
 0.0005