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World Library and Information Congress: 77th IFLA General Conference and Assembly. Semantic Web Special Interest Group. Puerto Rico. August 17
Linked Data at the BNE. Departamento de Proceso Técnico
Elena Escolano Rodríguez – Jefa Servicio de Coordinación y NormalizaciónDaniel Vila Suero – Universidad Politécnica de Madrid
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Linked Data at the BNE 2
Indice
01 Project background02 BNE Standards and Ontology Selection03 Data source set: Cervantes and surrounding data04 RDF Modelling05 URI Design06 Process Overview07 Main activities08 Process overview09 Process steps10 Main activities11 Some results
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Linked Data at the BNE
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 notsuccesful
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Linked Data at the BNE
Project background
Around January 2011 the joint project “Preliminarystudy of Linked Data” between the BNE and OEG starts
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Linked Data at the BNE
BNE Standards and Ontology selection
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Linked Data at the BNE
Data source set: Cervantes and surrounding data
MARC data selection involved 3 phases:
Phase 1: Authority records: Cervantes + each record that containedCervantes as author (author-title, author-title-lang, etc.) –> 550 records
Bibliographic records: Associated to selected set ofauthoritities 8552 records
Phase 2:Authority records: Records associated to selected set ofbibliographic records in Phase 1 7351 records
Phase 3:Authority records: Authority records related within anyfield with selected set in Phase 2. (Mainly themas andworks and expressions from authors of phase 2) 53000 records
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Linked Data at the BNE
RDF Modelling
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frbr:Manifestation
frbr:Person
frbr:Work
Frbr:Expression
frsad:Thema
ISBD Elements
MARC AUTHORITY
RECORD
FRBR
FRAD
MARC BIBLIOGRAPHIC
RECORD
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Linked Data at the BNE
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
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Linked Data at the BNE
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 SemanticWeb (Linked Data)
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Linked Data at the BNE
Main activities
1. Data analysis:Understand records’ organization and structure(Authorities and bibliographic)
Development of analytical tools (fields and subfieldscombination reports, etc.)
2. Mapping MARC21 to chosen ModelsVery complex process
ASSET: Tool for mapping templates generation, withanalytical data from input records
3. Data transformation to RDF:Ad-hoc transformation tool
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Linked Data at the BNE
Process overview
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Linked Data at the BNE
PROCESS STEPS
MAPPINGDEVELOPMENT
INSTANCESINTERLINKING
INSTANCESANOTATION
INSTANCESGENERATION
RECORDSANALYSIS
PUBBY
4STORECSV
1
2 3
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USER INTERFACE
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Linked Data at the BNE
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.
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Linked Data at the BNE
Some results
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Linked Data at the BNE
WORK is in Progresshttp://cultura.linkeddata.es/visualizer/
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE
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Linked Data at the BNE 24
Elena Escolano RodríguezDepartamento de Proceso Té[email protected]
Pº de Recoletos 20 -22 28071 Madrid EspañaT +34 915 807 800
www.bne.es