Library of Congress Linked Data Service
The LC Linked Data Service is an initiative of the Library of Congress that publishes authority data as linked data.[1] It is commonly referred to by its URI: id.loc.gov.[2]
The first offering of the LC Linked Data Service was the Library of Congress Subject Headings (LCSH) dataset, which was released in April 2009.[3]
Datasets
- Library of Congress Subject Headings (LCSH)
- Library of Congress Name authorities
- Library of Congress Classification -- because LC Classification uses a different MARC format than LC Authorities, mapping LC Classification to MADS/RDF was more difficult than mapping LCSH or LC Name authorities.[2]
- Library of Congress Thesaurus for Graphic Materials
- Various MARC codes
- Various preservation vocabularies
Formats
The service presents data in MADS/RDF and SKOS where appropriate, but also uses its own ontology to describe classification resources and relationships more accurately.[2] All records are available individually via content negotiation as XHTML/RDFa, RDF/XML, N-Triples, and JSON.[4]
Each vocabulary is also available to download in its entirety. Id.loc.gov does not currently provide a SPARQL endpoint.[5][6]
Uses
All of LCSH are cross linked with RAMEAU (Répertoire d’autorité matière encyclopédique et alphabétique unifié), an authority file from the Bibliothèque nationale de France.[4]
Technical aspects
The id.loc.gov site uses a fairly lightweight Python program to serve linked data.[5]
References
- ^ "About". LC Linked Data Service. Library of Congress. Retrieved 1 June 2014.
- ^ a b c Ford, Kevin (January 2013). "Library of Congress Classification as linked data". JLIS.it (Italian Journal of Library & Information Science). 4 (1). doi:10.4403/jlis.it-5465. Retrieved 1 June 2014.
- ^ Guenther, Rebecca (2011 January 9). LC's Authorities and Vocabularies Web Service: experimenting with Linked Data (PDF). American Library Association Mid-Winter Conference. San Diego, CA. Retrieved 1 June 2014.
{{cite conference}}: Check date values in:|date=(help) - ^ a b Ford, Kevin (2 November 2010). ID.LOC.GOV, 1 ½ Years: Review, Changes, Future Plans, MADS/RDF (PDF). Digital Library Federation Fall Forum. Palo Alto, CA. Retrieved 1 June 2014.
- ^ a b Template:Cite arXiv eprint=0805.2855
- ^ "Technical Center". LC Linked Data Service. Retrieved 1 June 2014.
See also
External links
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