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VIAF and ISNI

Janifer Gatenby. EMEA Program Manager Metadata OCLC. VIAF Council Meeting Singapore 2013-08-16. Interoperability. VIAF and ISNI. Music Rights. Text Rights. Trade Sources. Encyclopaedias. Libraries. Researchers & Professional. Assigned 6.87 million. Provisional: Possible 580,738.

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VIAF and ISNI

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  1. JaniferGatenby EMEA Program Manager MetadataOCLC VIAF Council Meeting Singapore 2013-08-16 Interoperability VIAF and ISNI

  2. Music Rights Text Rights Trade Sources Encyclopaedias Libraries Researchers & Professional

  3. Assigned 6.87 million Provisional: Possible 580,738 Provisional: Unassigned 9,563,590

  4. Assigned

  5. Links from Current Non-VIAF sources to VIAF clusters VIAF source links to ISNI = > 7.3 million

  6. VIAF and ISNI are Complementary ISNI Scope • Persons • + musicians, researchers • Organisations • (excluding sparse) • (excluding undifferentiated) • Includes private data VIAF Scope • Persons • Organisations • Works / uniform titles • Expressions • Meetings • Geographic • All public data

  7. VIAF and ISNI are Complementary ISNI Role • Create permanent IDs • By batch • On demand • Diffuse those IDs • Libraries, trade, rights management, professional societies, education VIAF Role • Ingest authority records from the world’s major national and research libraries • Make clusters • Expose and diffuse

  8. VIAF and ISNI are Complementary 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 System • Harvester • Clustering mechanism • Web site (5 interface languages) • Download in multiple formats • Linked data & SRU • 1 million personal visitors p.a.

  9. ISNI Quality Team • 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

  10. Example record fixed by QT • 3 VIAF records merged • ISNI sources British Library Sound Archive, MusicBrainz • notice instruments, performances

  11. Another example of a merge in ISNI

  12. Duplicate clusters • 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

  13. Titles of other identities Vocabulaire anglais-français, français-anglais, de terminologie économique et juridique IlPiemontevisto da uninglese Italia, ItaliaThe politics of the VaticanThe Pope'sdivisions : the Roman CatholicChurchtoday La notte comincia ancora una volta

  14. Amazon is differentiating

  15. Undifferentiated Identities • 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

  16. Public Identities versus Persons • 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

  17. VIAF ISNI Task Force • 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

  18. NUKAT 99036027 record for Thomas Meier (1953-) -2 erroneoustitles- New NUCAT authority record for Thomas Meier 1966 Titlesbelong to VIAF cluster 267789223 VIAF cluster 12431062 ISNI 0000 0003 9867 7425 Thomas Meier (1953-) ISNI 0000 0004 0034 1112 Thomas Meier 1966- Actions by ISNI • ISNI QT to delete the titlesfrom the ISNI record Actions by ISNI • ISNI QT adds the 2 titles to this ISNI record • Notification to VIAF (977) • Notification to VIAF and directly to the contributor (977) VIAF cluster 12431062 (with ISNI in the cluster) NUKAT 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 titlesadded by ISNI VIAF cluster 267789223 Without the 2 titles for Thomas Meier 1966

  19. VIAF sources • Flag undifferentiated records • e.g. those generated by programs comparing authority and bibliographic name strings • Respond to ISNI notifications • correct “home” data • 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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