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Enhancing Metadata Interoperability: Insights from the VIAF and ISNI Collaboration

The 2013 meeting in Singapore brought together experts to discuss the interoperability between VIAF (Virtual International Authority File) and ISNI (International Standard Name Identifier). With over 6.87 million provisional assignments, the collaboration aims to enhance metadata management for libraries, researchers, and rights organizations. Both systems serve complementary roles, providing unique identifiers for individuals and organizations while addressing challenges of duplicate records. The meeting generated valuable insights on improving authority control and data quality for music rights and academic research worldwide.

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Enhancing Metadata Interoperability: Insights from the VIAF and ISNI Collaboration

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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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