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The world’s libraries. Connected.
VIAF and ISNI
Interoperability
Janifer Gatenby
EMEA Program Manager Metadata
OCLC
VIAF C...
Libraries
Text Rights
Music Rights
Trade Sources
Encyclopaedias
Researchers & Professional
The world’s libraries. Connected.
Provisional: Unassigned
9,563,590
Provisional: Possible
580,738
Assigned
6.87 million
As...
The world’s libraries. Connected.
Assigned
bav bibsys bne bnf dbc dnb egaxa iccu jpg
Assigned 181597 40634 221254 1067572 ...
Links from Current Non-
VIAF sources to VIAF
clusters
VIAF source links to ISNI =
> 7.3 million
The world’s libraries. Connected.
VIAF Scope
• Persons
• Organisations
• Works / uniform titles
• Expressions
• Meetings
•...
The world’s libraries. Connected.
VIAF Role
• Ingest authority records
from the world’s major
national and research
librar...
The world’s libraries. Connected.
VIAF System
• Harvester
• Clustering mechanism
• Web site (5 interface
languages)
• Down...
The world’s libraries. Connected.
• Samples data regularly
• c. 2% VIAF clusters have mixed identities
• Duplicate cluster...
Example record fixed by QT
• 3 VIAF records merged
• ISNI sources British
Library Sound
Archive, MusicBrainz
• notice
inst...
The world’s libraries. Connected.
Another example of a merge in ISNI
The world’s libraries. Connected.
• Cause duplicate ISNI assignment
• Where both clusters have more than 3 VIAF sources
• ...
Titles of other identities
Vocabulaire anglais-français, français-
anglais, de terminologie économique et
juridique
Il Pie...
The world’s libraries. Connected.
Amazon is differentiating
The world’s libraries. Connected.
• Signalled by ISNI Quality Team
• Most cases encountered now are due to source data
• I...
The world’s libraries. Connected.
• ISNI is assigned to public identities. Pseudonyms
= different identities; but related
...
The world’s libraries. Connected.
• Policy on pseudonyms
• Study notification work flows
• How to remove record protect fl...
NUKAT
99036027
record for
Thomas Meier
(1953-)
-2 erroneous
titles-VIAF cluster 267789223
ISNI 0000 0003 9867 7425
Thomas ...
The world’s libraries. Connected.
• Flag undifferentiated records
• e.g. those generated by programs comparing authority a...
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Viaf and isni ifla 2013 08-16

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VIAF and ISNI; interoperation; cluster level maintenance
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Viaf and isni ifla 2013 08-16

  1. 1. The world’s libraries. Connected. VIAF and ISNI Interoperability Janifer Gatenby EMEA Program Manager Metadata OCLC VIAF Council Meeting Singapore 2013-08-16
  2. 2. Libraries Text Rights Music Rights Trade Sources Encyclopaedias Researchers & Professional
  3. 3. The world’s libraries. Connected. Provisional: Unassigned 9,563,590 Provisional: Possible 580,738 Assigned 6.87 million Assigned ISNIs July 2013 2 + independent sources 2,730,631 3+ VIAF sources 656,976 Unique name 3,157,075 Single source (JISC names, BOEK, Ringgold) 296,417 Total 6,636,916 Assigned ISNIs to VIAF July 2013 2 + independent sources 2,496,141 3+ VIAF sources 656,976 Unique name 2,643,958 Single source 0 Total 5,797,075
  4. 4. The world’s libraries. Connected. Assigned bav bibsys bne bnf dbc dnb egaxa iccu jpg Assigned 181597 40634 221254 1067572 1065 1403508 14121 12736 47783 Total 263382 70347 415630 1715817 2263 3205940 34688 36554 181623 Percentage assigned 68,95 57,76 53,23 62,22 47,06 43,78 40,71 34,84 26,31 Unique 41653 15633 46685 213047 524 572443 107 7154 145 lac lc ndl nkc nla nli nszl nta nukat Assigned 245604 3530966 366043 358085 345220 293140 13075 1399918 828316 Total 509126 6973060 775719 520334 647341 440566 33673 2347967 1143046 Percentage assigned 48,24 50,64 47,19 68,82 53,33 66,54 38,83 59,62 72,47 Unique 64647 778749 226188 94632 27482 29882 25 314163 173921 ptbnp rero rsl selibr sudoc swnl vlacc wkp VIAF Assigned 116038 81155 293 96930 727610 22738 3647 261673 5797075 Total 286490 119523 586 157939 1002970 38228 5132 326347 14501337 Percentage assigned 40,50 67,90 50,00 61,37 72,55 59,48 71,06 80,18 39,97614 Unique 38100 4019 118 21861 182138 6553 49 16395 2643958
  5. 5. Links from Current Non- VIAF sources to VIAF clusters VIAF source links to ISNI = > 7.3 million
  6. 6. The world’s libraries. Connected. VIAF Scope • Persons • Organisations • Works / uniform titles • Expressions • Meetings • Geographic • All public data ISNI Scope • Persons • + musicians, researchers • Organisations • (excluding sparse) • (excluding undifferentiated) • Includes private data VIAF and ISNI are Complementary
  7. 7. The world’s libraries. Connected. VIAF Role • Ingest authority records from the world’s major national and research libraries • Make clusters • Expose and diffuse ISNI Role • Create permanent IDs • By batch • On demand • Diffuse those IDs • Libraries, trade, rights management, professiona l societies, education VIAF and ISNI are Complementary
  8. 8. The world’s libraries. Connected. VIAF System • Harvester • Clustering mechanism • Web site (5 interface languages) • Download in multiple formats • Linked data & SRU  1 million personal visitors p.a. ISNI System • Batch load • Online request API • Web site (English only) • Allows end user input • Member input and correction • 16+ indexes • SRU; soon linked data • Quality Team monitoring & correcting • Diffusion, including corrections VIAF and ISNI are Complementary
  9. 9. The world’s libraries. Connected. • Samples data regularly • c. 2% VIAF clusters have mixed identities • Duplicate clusters are higher, nearer 5% • Makes corrections at cluster level • Merges, splits, error notifications • Access to cataloguing client / macros • Makes system recommendations • Gives approval for single source assignment • Responds to End User input ISNI Quality Team
  10. 10. Example record fixed by QT • 3 VIAF records merged • ISNI sources British Library Sound Archive, MusicBrainz • notice instruments, performances
  11. 11. The world’s libraries. Connected. Another example of a merge in ISNI
  12. 12. The world’s libraries. Connected. • Cause duplicate ISNI assignment • Where both clusters have more than 3 VIAF sources • Where an ISNI source matches with a single or 2 source VIAF record • (Where VIAF sources move between the clusters) • ISNI as a VIAF source will help VIAF merge clusters where ISNI QT has manually merged them (2,444) • ISNI has flagged 481,766 VIAF records as possible duplicates Duplicate clusters
  13. 13. Titles of other identities Vocabulaire anglais-français, français- anglais, de terminologie économique et juridique Il Piemonte visto da un inglese Italia, Italia The politics of the Vatican The Pope's divisions : the Roman Catholic Church today La notte comincia ancora una volta
  14. 14. The world’s libraries. Connected. Amazon is differentiating
  15. 15. The world’s libraries. Connected. • Signalled by ISNI Quality Team • Most cases encountered now are due to source data • ISNI QT would like to notify VIAF sources directly • VIAF is currently notified by a field in the ISNI record; notifications indicate if a cluster error or a source error Undifferentiated Identities
  16. 16. The world’s libraries. Connected. • ISNI is assigned to public identities. Pseudonyms = different identities; but related • VIAF sources- some treat as name variants, some as related names • ISNI suite of programs • Converts pseudonym name variants to related names • Flags records with dissimilar main names • Links and protects Public Identities versus Persons
  17. 17. The world’s libraries. Connected. • Policy on pseudonyms • Study notification work flows • How to remove record protect flags • Participate in cluster sampling in VIAF and ISNI • Help define new anomaly detectors • ISNI has dissimilar main name / publishing before age 9, life span greater than 120 years VIAF ISNI Task Force
  18. 18. NUKAT 99036027 record for Thomas Meier (1953-) -2 erroneous titles-VIAF cluster 267789223 ISNI 0000 0003 9867 7425 Thomas Meier (1953-) ISNI 0000 0004 0034 1112 Thomas Meier 1966- • ISNI QT to delete the titles from the ISNI record • Notification to VIAF and directly to the contributor (977) NUKAT VIAF cluster 267789223 NUKAT deletes the 2 titles and creates a new authority record for Thomas Meier 1966 This new NUKAT record matches with the VIAF cluster for Thomas Meier 1966- on the 2 titles added by ISNI VIAF cluster 12431062 (with ISNI in the cluster) VIAF cluster 12431062 Actions by ISNI • ISNI QT adds the 2 titles to this ISNI record • Notification to VIAF (977) New NUCAT authority record for Thomas Meier 1966 Without the 2 titles for Thomas Meier Actions by ISNI
  19. 19. The world’s libraries. Connected. • Flag undifferentiated records • e.g. those generated by programs comparing authority and bibliographic name strings • Respond to ISNI notifications • correct “home” data VIAF sources As ISNI Members: • Control “own identities” in VIAF and ISNI * Check possible matches and suspect records on ISNI • Use ISNI for direct maintenance of clusters * Will generate notifications to VIAF and VIAF sources

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