The world’s libraries. Connected. VIAF and ISNI Interoperability Janifer Gatenby EMEA Program Manager Metadata OCLC VIAF Council Meeting Singapore 2013-08-16
Jan 26, 2015
The world’s libraries. Connected.
VIAF and ISNIInteroperability
Janifer Gatenby
EMEA Program Manager MetadataOCLC
VIAF Council Meeting
Singapore 2013-08-16
Libraries
Text RightsMusic Rights
Trade Sources
Encyclopaedias
Researchers & Professional
The world’s libraries. Connected.
Provisional: Unassigned9,563,590
Provisional: Possible580,738
Assigned6.87 million
Assigned ISNIs July 2013
2 + independent sources 2,730,6313+ VIAF sources 656,976
Unique name 3,157,075Single source (JISC
names, BOEK, Ringgold) 296,417Total 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
The world’s libraries. Connected.
Assigned
bav bibsys bne bnf dbc dnb egaxa iccu jpg
Assigned 181597 40634 221254 1067572 1065 1403508 14121 12736 47783Total 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 nukatAssigned 245604 3530966 366043 358085 345220 293140 13075 1399918 828316Total 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 VIAFAssigned 116038 81155 293 96930 727610 22738 3647 261673 5797075Total 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
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
• Geographic
• All public data
ISNI Scope
• Persons
• + musicians, researchers
• Organisations
• (excluding sparse)
• (excluding undifferentiated)
• Includes private data
VIAF and ISNI are Complementary
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, professional societies, education
VIAF and ISNI are Complementary
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
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
Example record fixed by QT• 3 VIAF records merged• ISNI sources British Library Sound Archive, MusicBrainz• notice instruments, performances
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
• 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
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
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
• 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
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
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
NUKAT 99036027record for Thomas Meier (1953-) -2 erroneous titles- VIAF cluster 267789223
ISNI 0000 0003 9867 7425Thomas Meier (1953-)
Titles belong to
ISNI 0000 0004 0034 1112Thomas 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 1966
Actions by ISNI
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