The
LC Linked Data Serviceis an initiative of the
Library of Congressthat publishesauthority dataaslinked 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]
The Library of Congress offers users the opportunity to create their own datasets with library application profiles (APIs).
Create your own datasets
The service presents data in
MADS/RDFand
SKOSwhere appropriate, but also uses its own ontology to describe classification resources and relationships more accurately.[2]All records are available individually viacontent negotiationas
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
SPARQLendpoint.[5][6]
All of LCSH are crosslinked with
RAMEAU[d](Répertoire d’autorité-matière encyclopédique et alphabétique unifié), an authority file from the
Bibliothèque nationale de France.[4]
The id. loc. gov site initially used a fairly lightweight
Pythonprogram to serve linked data.[5]