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Authorities and Vocabularies, LC’s New SKOS-Based Service. Janis L. Young Cataloging Policy Specialist Policy and Standards Division Library of Congress jayo@loc.gov. SKOS. Simple Knowledge Organization System
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Authorities and Vocabularies, LC’s New SKOS-Based Service Janis L. Young Cataloging Policy Specialist Policy and Standards Division Library of Congress jayo@loc.gov
SKOS • Simple Knowledge Organization System • “Provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other similar types of controlled vocabulary”—SKOS Primer
SKOS • Based on the Resource Description Framework (RDF) • Resources can be exchanged between software applications and published on the Web • Interconnects data on the Web, helping create the Semantic Web
Authorities and Vocabularies • URL: id.loc.gov • Replaces lcsh.info • Intent: To provide human and programmatic access to commonly found standards and vocabularies developed by LC
Authorities and Vocabularies • LCSH is the first offering • Subject headings • Genre/form headings • Children’s subject headings • Subdivision records • Validation records • Provides links from LCSH headings to RAMEAU headings
Authorities and vocabularies • To come: • Thesaurus for Graphic Materials (TGM) • MARC geographic area codes • MARC language codes • MARC relator codes
Authorities and Vocabularies • Benefits • Servers can download entire controlled vocabularies and the values within them, in multiple formats • Available at no cost
Authorities and Vocabularies • Human end-users can search and view individual headings and data elements and view • Details of the record • Visualization
Authorities and Vocabularies • URL for specific LCSH records: id.loc.gov/authorities/[LCCN] id.loc.gov/authorities/sh8508803
Authorities and Vocabularies • Current search parameters • Headings containing words comprising three characters or less are not searchable • Searching is “keyword in heading” • UFs must be searched with the “Known Label Retrieval” method, e.g. id.loc.gov/authorities/label/Cinema • Retain spaces and punctuation • Do not truncate
Authorities and Vocabularies • Current display parameters • Terms labeled as BTs may be facets instead World War, 1939-1945—Personal narratives BT World War, 1939-1945 • Terms with more than 20 semantic relationships cannot be visualized
Authorities and Vocabularies • Contact information • Content of site: Libby Dechman, edec@loc.gov • Technical questions: Larry Dixson, ldix@loc.gov
Authorities and Vocabularies • A comment form and discussion list are available at http://id.loc.gov/authorities/contact.html