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VOCABULARY USAGE
IN
DATOS.BNE.ES
DanielVila-Suero
REUSE AS MUCH AS POSSIBLE
Maximize the coverage of mappings from MARC 21 to RDF
6 CLASSES
14 OBJECT PROPERTIES
>200 DATATYPE PROPERTIES
FROM MORETHAN 10 DIFFERENTVOCABULARIES
String
MAPPINGS ARE PUBLICLY AVAILABLE
http://bne.linkeddata.es/mapping-marc21
BE PRAGMATIC
DCMI Elements
DCMITerms
IFLA FRAD
IFLA FRBRer
IFLA FRSAD
IFLA ISBD Elements
MADS/RDF
RDA Group 2 Elements
RDA Relationships for WEMI
SKOS
...
WHAT ISTHE CORE DATA MODEL ?
IFLA FRBR
Ok, and how does the data look?
frbr:Person frbr:Work
frbr:Expressionfrbr:CorporateBody
frbr:Manifestation
skos:Concept
Group 2 Group 1 Group 3
Don Quijote de la Mancha
French manifestations
(213)
Novelas Ejemplares
Spanish manifestations
(303)
Don Quijote de la Mancha
Spanish manifestations
(840)
Don Quijote de la Mancha
English manifestations
(247)
Don Quijote de la Mancha
frbr:Work
Miguel de Cervantes
Don Quijote de la Mancha
German manifestations
(49)
Entremeses
Spanish manifestations
(86)
frbr:Work frbr:isEmbodiedIn frbr:Expression
frbr:Expression frbr:IsManifestedBy frbr:Manifestation
frbr:Person frbr:isCreatorOf frbr:Work
( ) Number of resources
WHYTHIS?
frbr:Person
frbr:Work
frbr:Expression
frbr:Manifestation
AND NOTTHIS?
Person
Bib. resource
1. Nº OF AUTHORITY RECORDS
0
500.000
1.000.000
1.500.000
2.000.000
frbr:Work frbr:Person frbr:Expression
Nº of records
frbr:Work frbr:Person frbr:Expression
2. CLUSTERING OF RESOURCES IS EXPLICIT
INTHE DATA (ANDTHE MODEL)
Manifestations
Person
Works
Expressions
++ NAVIGATION
http://bne.linkeddata.es
3. LINKSTO OTHER DATASETS
Also at Work and Expression levels
(VIAF, idRef, etc.)
LINKSTO EXTERNAL DATASETS
Also at the Work and Expression level
(VIAF, idRef, etc.)
bne:XX3383563
viaf:184295284
SOME CLICKS AFTER
The user can access the “curated and reliable” cluster of editions
of Don Quijote de la Mancha in Italian
SOME ISSUES
• Pure FRBR representation not always possible
dct:subject, dct:language at Manifestation level instead of Work level
• Around 30% of bibliographic records still not connected to
their Expression
• Manifestations are mostly described with strings, not many
links
• Does the modelling seem to complex to people outside the
library community?
NEXT STEP
Data portalAPIs
MARC 21, XML,
metadata schemas
BNE Knowledge Graph
(RDF with rich data model)
For humans
and machines
(schema.org)
For developers
JSON(LD)
LDP, LD API
SPARQL
HTTP
RICH
POOR?
MORE INFO AT
• http://datos.bne.es
• “datos.bne.es: A library linked dataset”.Vila-Suero et al.,
Semantic Web Journal 2013
• “datos.bne.es and MARiMbA: An insight into Library Linked
Data”.Vila-Suero and Gómez-Pérez. Library Hi-tech, to appear
2013
THANK YOU VERY MUCH
dvila@fi.upm, @dvilasuero

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Data enrichment and transformation in the LOD Context: Vocabulary usage in datos.bne.es

  • 2. REUSE AS MUCH AS POSSIBLE Maximize the coverage of mappings from MARC 21 to RDF 6 CLASSES 14 OBJECT PROPERTIES >200 DATATYPE PROPERTIES FROM MORETHAN 10 DIFFERENTVOCABULARIES String
  • 3. MAPPINGS ARE PUBLICLY AVAILABLE http://bne.linkeddata.es/mapping-marc21
  • 4. BE PRAGMATIC DCMI Elements DCMITerms IFLA FRAD IFLA FRBRer IFLA FRSAD IFLA ISBD Elements MADS/RDF RDA Group 2 Elements RDA Relationships for WEMI SKOS ...
  • 5. WHAT ISTHE CORE DATA MODEL ? IFLA FRBR Ok, and how does the data look? frbr:Person frbr:Work frbr:Expressionfrbr:CorporateBody frbr:Manifestation skos:Concept Group 2 Group 1 Group 3
  • 6. Don Quijote de la Mancha French manifestations (213) Novelas Ejemplares Spanish manifestations (303) Don Quijote de la Mancha Spanish manifestations (840) Don Quijote de la Mancha English manifestations (247) Don Quijote de la Mancha frbr:Work Miguel de Cervantes Don Quijote de la Mancha German manifestations (49) Entremeses Spanish manifestations (86) frbr:Work frbr:isEmbodiedIn frbr:Expression frbr:Expression frbr:IsManifestedBy frbr:Manifestation frbr:Person frbr:isCreatorOf frbr:Work ( ) Number of resources
  • 9. 1. Nº OF AUTHORITY RECORDS 0 500.000 1.000.000 1.500.000 2.000.000 frbr:Work frbr:Person frbr:Expression Nº of records frbr:Work frbr:Person frbr:Expression
  • 10. 2. CLUSTERING OF RESOURCES IS EXPLICIT INTHE DATA (ANDTHE MODEL) Manifestations Person Works Expressions
  • 12. 3. LINKSTO OTHER DATASETS Also at Work and Expression levels (VIAF, idRef, etc.)
  • 13. LINKSTO EXTERNAL DATASETS Also at the Work and Expression level (VIAF, idRef, etc.) bne:XX3383563 viaf:184295284
  • 14. SOME CLICKS AFTER The user can access the “curated and reliable” cluster of editions of Don Quijote de la Mancha in Italian
  • 15. SOME ISSUES • Pure FRBR representation not always possible dct:subject, dct:language at Manifestation level instead of Work level • Around 30% of bibliographic records still not connected to their Expression • Manifestations are mostly described with strings, not many links • Does the modelling seem to complex to people outside the library community?
  • 16. NEXT STEP Data portalAPIs MARC 21, XML, metadata schemas BNE Knowledge Graph (RDF with rich data model) For humans and machines (schema.org) For developers JSON(LD) LDP, LD API SPARQL HTTP RICH POOR?
  • 17. MORE INFO AT • http://datos.bne.es • “datos.bne.es: A library linked dataset”.Vila-Suero et al., Semantic Web Journal 2013 • “datos.bne.es and MARiMbA: An insight into Library Linked Data”.Vila-Suero and Gómez-Pérez. Library Hi-tech, to appear 2013 THANK YOU VERY MUCH dvila@fi.upm, @dvilasuero