User:Realworldobject/sandbox

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BiblioGraph.net
File:Bibliograph.net-Logo.svg
Abbreviationbgn
Year started2014
OrganizationOCLC
Base standardsURI, HTML5, RDF, Microdata, ISO 8601
Related standardsRDFa, Microformat, RDFS, OWL, N-Triples, Turtle, JSON, JSON-LD, CSV
DomainSemantic Web
LicenseCC-BY-SA 3.0
Websitebibliograph.net

BiblioGraph.net (BGN) is an extension to Schema.org that was developed for richer descriptions of bibliographic resources[1]. This "external" extension was effectively replaced in May 2015 by the "hosted" extension bib.schema.org[2], although the efforts haven't been fully reconciled.

History[edit]

Although libraries were early adopters of RDF and linked data[3][4][5], they tended to be localized namespace mashups that focused on identifier and terminology reuse rather than structured data reuse. In comparison, the growing popularity of Schema.org (announced June 2, 2011) demonstrated the potential of a cross-domain namespace, intuitive terminology, simplified HTML embeddings (Microdata or RDFa) and expectations that search engine optimization would improve. Schema.org's coverage of library-related concepts was thin, however, and the original "Slash-based" extension mechanism[6] lacked documentation and examples.

In response, the W3C Schema Bib Extend Community Group[7] was formed on September 25, 2012 to "discuss and prepare proposal(s) for extending Schema.org schemas for the improved representation of bibliographic information markup and sharing."[8] The group met regularly between December 2012 and February 2014[9] to document use cases, define scope, and propose extension terms.[10]

Although other communities also proposed additions to Schema.org, the process remained restrictive compared to industrial needs.[11] As an early extension alternative, Schema.org made their underlying software available as open source allowing Schema.org to be treated as the core, but with greater local control over the extensions. By using this software platform, the complete set of Schema Bib Extend proposals[12] was published on July 17, 2014 as BiblioGraph.net[13].

Although the shared software platform potentially allowed communities to manage extension like BiblioGraph.net with more agility and independence, pressure remained on Schema.org to deal with extensions in a more centralized way. In May 2015, Schema.org announced a new "hosted" extension mechanism replacing the original "slash-based" mechanism[14]. Among the initial hosted extensions was bib.schema.org[15] which effectively subsumed the purpose of the "external" BiblioGraph.net. The two efforts were never fully reconciled, although the W3C Schema Bib Extend Community Group subsequently targeted bib.schema.org and development on BiblioGraph.net ceased.

BiblioGraph.net Terms[edit]

The set of BiblioGraph.net extension terms fall into three categories. Terms that map to the hosted bib.schema.org extension are highlighted, although many gaps remain.

Classes[edit]

Properties[edit]

Individuals[edit]

Wikidata Equivalencies[edit]

Although Schema.org and its extensions have limited capabilities as illustrated above, more complete coverage can be found using Wikidata and declared 'equivalent class' (P1709)[16], and 'equivalent property' (P1628) claims[17]. Wikidata classes and properties are not designed to be used outside of Wikidata itself, but they can be used as a hub for finding equivalencies in other namespaces. To the extent that search engines consume Wikidata in addition to crawling Schema.org markup on the web, some of the potential of search engine optimization can still be realized. 

PREFIX bgn: <http://bibliograph.net/>
SELECT ?item ?bgn ?propLabel
WHERE {
  VALUES ?p {
    wdt:P1709
    wdt:P1628
  }
  ?prop wikibase:directClaim ?p .
  ?item ?p ?bgn .
  FILTER(STRSTARTS(STR(?bgn), STR(bgn:)))
  BIND(STRAFTER(STR(?bgn), STR(bgn:)) AS ?term)
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
ORDER BY ?propLabel ?term

Click here to launch the Wikidata query

References[edit]

  1. ^ "Schema Bib Extend Community Group". W3C. Retrieved 25 March 2019.
  2. ^ "Home - bib.schema.org". bib.schema.org. Retrieved 2019-03-26.
  3. ^ "DCMI: DCMI Metadata expressed in RDF Schema Language". dublincore.org. Retrieved 2019-03-27.
  4. ^ "LCSH, SKOS and Linked Data".
  5. ^ "Library Linked Data Incubator Group Final Report". www.w3.org. Retrieved 2019-03-27.
  6. ^ "("Slash-based") Extension Mechanism". schema.org. Retrieved 2019-03-27.
  7. ^ "Schema Bib Extend Community Group". Retrieved 2019-03-26.
  8. ^ "Schema Bib Extend Community Group". Retrieved 2019-03-27.
  9. ^ "Meetings - Schema Bib Extend Community Group". www.w3.org. Retrieved 2019-03-26.
  10. ^ "Schema Bib Extend Community Group". www.w3.org. Retrieved 2019-03-27.
  11. ^ "Vocabulary Proposals - Schema Bib Extend Community Group". www.w3.org. Retrieved 2019-03-26.
  12. ^ "Vocabulary Proposals - Schema Bib Extend Community Group". www.w3.org. Retrieved 2019-03-26.
  13. ^ "BiblioGraph.net".
  14. ^ "Schema.org Extensions". schema.org. Retrieved 2019-03-26.
  15. ^ "Home - bib.schema.org". bib.schema.org. Retrieved 2019-03-26.
  16. ^ "equivalent class". www.wikidata.org. Retrieved 2019-03-26.
  17. ^ "equivalent property". www.wikidata.org. Retrieved 2019-03-26.

External links[edit]

Category:Internet properties established in 2014 Category:Semantic HTML Category:Semantic Web Category:Ontology (information science) Category:Information science

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