Short talk for the session and panel discussion: "DATA ENRICHMENT AND TRANSFORMATION IN THE LOD CONTEXT: POOR AND POPULAR VS. RICH AND LONELY—CAN'T WE ACHIEVE BOTH?" at DCMI Conference Lisbon 2013

1. VOCABULARY USAGE
IN
DATOS.BNE.ES
DanielVila-Suero

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

7. WHYTHIS?
frbr:Person
frbr:Work
frbr:Expression
frbr:Manifestation

8. AND NOTTHIS?
Person
Bib. resource

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

11. ++ NAVIGATION
http://bne.linkeddata.es

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