The document describes the BNE's project to create linked data from its bibliographic and authority records. It involved selecting relevant MARC data about Miguel de Cervantes and related authors, mapping the data to FRBR, FRAD and other ontologies, transforming the data into RDF, and linking the data to other datasets like VIAF. The goals were to test applying IFLA models at scale, and create a unified authority system for Spanish libraries. Key activities included analyzing the MARC data, developing mapping and transformation tools, and publishing the linked data on the web.

1. Departamento de Proceso Técnico
Linked Data at the BNE.
World Library and Information Congress: 77th
IFLA General Conference and Assembly.
Semantic Web Special Interest Group. Puerto
Rico. August 17
Elena Escolano Rodríguez – Jefa Servicio de Coordinación y Normalización
Daniel Vila Suero – Universidad Politécnica de Madrid

2. Indice
01 Project background
02 BNE Standards and Ontology Selection
03 Data source set: Cervantes and surrounding data
04 RDF Modelling
05 URI Design
06 Process Overview
07 Main activities
08 Process overview
09 Process steps
10 Main activities
11 Some results
Linked Data at the BNE 2

3. Project background
Cooperation project between BNE and national and regional
libraries of Spain
GOAL: Create a Unified Authority System (similar to VIAF
approach)
MAIN ISSUE: Multilinguality
Various approaches were analysed and tested, but were not
succesful
Linked Data at the BNE

4. Project background
Around January 2011 the joint project “Preliminary
study of Linked Data” between the BNE and OEG starts
Linked Data at the BNE

5. BNE Standards and Ontology selection
Linked Data at the BNE

6. Data source set: Cervantes and surrounding data
MARC data selection involved 3 phases:
Phase 1:
Authority records: Cervantes + each record that contained
Cervantes as author (author-title, author-title-lang,
etc.) –> 550 records
Bibliographic records: Associated to selected set of
authoritities 8552 records
Phase 2:
Authority records: Records associated to selected set of
bibliographic records in Phase 1 7351 records
Phase 3:
Authority records: Authority records related within any
field with selected set in Phase 2. (Mainly themas and
works and expressions from authors of phase 2)
53000 records
Linked Data at the BNE
6

7. RDF Modelling
frbr:Manifestation
MARC ISBD
BIBLIOGRAPHIC Elements
RECORD
Frbr:Expression FRBR
frbr:Work
MARC FRAD
AUTHORITY
RECORD
frbr:Person
frsad:Thema
Linked Data at the BNE
7

8. URI Design
Followed Cool URIs and Linked Data patterns (Natural keys)
A-Box:
http://cultura.linkeddata.es/BNE/resource/<Class>/<ID>
T-Box:
Opaque URIs
Multilingual labels (EN, ES, HR..)
Available at metadataregistry.org
Base URI: http://iflastandards.info/ns/
Not published, will be published soon not dereferenceable
Linked Data at the BNE

9. Process Overview
OBJECTIVES:
1. Find a systematic and repeteable transformation methodology
2. Design and implementation of lifecycle supporting tools
(mapping, cleaning, transformation, linkage).
3. Proove applicability of IFLA RDF/OWL models
Lifecycle Process : Iterative and incremental
Joint effort from two different worlds: Libraries and Semantic
Web (Linked Data)
Linked Data at the BNE
9

10. Main activities
1. Data analysis:
Understand records’ organization and structure
(Authorities and bibliographic)
Development of analytical tools (fields and subfields
combination reports, etc.)
2. Mapping MARC21 to chosen Models
Very complex process
ASSET: Tool for mapping templates generation, with
analytical data from input records
3. Data transformation to RDF:
Ad-hoc transformation tool
Linked Data at the BNE
10

11. Process overview
Linked Data at the BNE
11

12. PROCESS STEPS
USER INTERFACE
RECORDS
ANALYSIS
6 PUBBY
1
CSV
4STORE
MAPPING INSTANCES
DEVELOPMENT GENERATION
2 3
INSTANCES
ANOTATION
4
INSTANCES 5
INTERLINKING
Linked Data at the BNE

13. Main activities
4. Cultura.linkeddata.es domain for CH resources
5. RDF publishing:
Virtuoso Server
Pubby
6. Linkage to other datasets:
Phase 1: VIAF y other libraries (BL, DNB, Libris Sweden)
Phase 2: DBPEDIA, Geo, etc.
Linked Data at the BNE
13

14. Some results
Linked Data at the BNE
14

15. WORK is in Progress
http://cultura.linkeddata.es/visualizer/
Linked Data at the BNE

16. Linked Data at the BNE

17. Linked Data at the BNE

18. Linked Data at the BNE

19. Linked Data at the BNE

20. Linked Data at the BNE

21. Linked Data at the BNE

22. Linked Data at the BNE

23. Linked Data at the BNE

24. Elena Escolano Rodríguez
Departamento de Proceso Técnico
elena.escolano@bne.es
Pº de Recoletos 20 -22
28071 Madrid
España
T +34 915 807 800
www.bne.es
Linked Data at the BNE 24