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Anila Angjeli
1APARSEN - Interoperability of PI workshop, iPRES, Lisbon, 5 September 2013
VIAFand
Member of the Board of directors of ISNI-IA
VIAF
• Merge of 32+ national level authority files• 34 + million authority records• 103 + million bibliographic records• 23 + million merged clusters
Persons, organizations, meetings, geographic names, works and expressions
though young (less than 10 years) …
from VIAF to ISNI
Libraries
Text Rights
Music RightsTrade Sources
Encyclopaedias
Researchers & Professional
cross-domain bridging-domains
Figures+ % confidence
- % confidence
Assigned ISNIs to VIAF July 2013
2 + independent sources 2,496,141
3+ VIAF sources 656,976
Unique name 2,643,958
Total 5,797,075Provisional: Unassigned
9,563,590
Provisional: Possible580,738
Assigned
6.87 million
Number of data contributors
VIAF 39
Others 25
Total(in permanent growth)
64
Cross links among sources through local IDs
Over 7,6 million
Governance & control infrastructureISNI-IA
ISO Registration Authority(the governing body)
Quality Teamlibraries
data
ISNI-AAAssignment Agency
(manages the central database)
Registration Agency
Registration Agency
Registration Agency
Registration AgencyRegistration
Agency
Member
Member
Member
enduser
enduser
database
• 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
Domain Cross-domain identities Authority files +
Main purpose
Certified ID (unique, persistent, international, cross-domain) 27729
Clustering, federating authority files for reuse
(initially not an ID system)
ID degree of persistency
Permanent As persistent as possible
Referent
PublicIdentities Persons Organizations Fictional
Authority Persons Organizations Meetings, Works/Expr, Geog
Data privacy Includes private data (not disclosed to public)
All public data
Assignment principles
Matching authoritative data sources No sparse records No undifferentiated identities
Matching authority files
Management Centrally managed Quality Team (BnF+BL)
Maintenance of source authority files in the contributing databases
Links
Among source data, Titles of works, Related identities, Wikipedia, Other encycl sources VIAF
Among source files, Wikipedia, ISNI
Linked data Soon Yes
differences – commonalities - complementarity
Interest for interoperability
VIAF – ISNI
Areas of interest• Same referent (semantic)• Communities of users sharing interests• Same user operating in multiple communities
8
VIAF-ISNI inter
Monthly updates
ISNIsReprocessing
after notification
Error notifications
Quality Team Quality
control
matching
Assignment
Error detection
Reminder: VIAF seed database for ISNI
VIAF-ISNI Task ForcePolicy on pseudonyms Study notification work flows Participate in cluster sampling in VIAF and ISNI Help define new anomaly detectors, etc
-relationship-operability
Linked
10
External Link
11
in BnF Catalog a library use case
Workflows with publishers(Legal deposit)
Bibliographic and
authority products
Out of commerce works
Research and discovery
Other uses…