charper.lawdi.20120601

Linked Library Data, LOD-LAM, & the Dublin Core Metadata Initiative

Presented 2012-06-01Linked Ancient World Data InstituteCorey A Harper

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Topical Overview

• Talk outline:* A few principles that didn't come up yesterday   - Open vs. Closed world assumption   - Graph Merging* LOD-LAM* Libraries in the LOD-LAM   - RDF Vocabs         - Non-Library              * BiBo              * FRBR Fake              * DCterms         - Library              * Official FRBR              * ISBD & other IFLA              * MARC 21              * BibFrame              * RDAdigi 

• - Value Vocabs         - id.loc         - fast         - viaf   - Instance data          - British Library stuff & more   - W3C Incubator Group   - Archives   - ALA, IFLA, ExL, & more* DCMI    - DCAM    - Metadata Registries    - Vocabulary Alignment* Where does this fit?* Services from Libraries & Library Data?* Use cases for LAWDI & AW Scholarship

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3 Takeaways

• Libraries are doing a lot in this space

• We want to do more, including building infrastructure for your research

• The Dublin Core Metadata Initiative is more than a set of vocabularies. We’re working on how to do this

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Library Metadata

• Rich stores of MARC, MODS, &c.

• Robust Controlled Vocabularies Subject Heading lists Code lists Thesauri

• Emerging data model in FR*

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Era of

“Perpetual

Metadata

Heterogeneity”

--or--

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Ethan Gruber’s Alphabet Soup

MODS MARC METS DC EAD MADS TEI MEI CIDOC-CRM SKOS RDF RDFS XML FGDC FRBR EAC-CPF ISO-19115 FRSAD MARC-XML VRA FRAD PB-CORE DARWIN-CORE &c &c &c

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Bibliographic Vocabs

• Bibliographic Ontology (Bibo) Zotero, Omeka, EPrints and Others

• FRBR – unofficial And now Official (Thank you IFLA!)

• International Standard for Bibliographic Description (ISBD)

• Resource Description and Access (RDA)

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Linked Library [Archive, Museum] Data

• LIBRIS (Swedish Union Catalog)• Library of Congress (LCSH, OSI)• German National Library• Hungarian National Library• British Library• Europeana• Archives Hub, LOCAH & Linking Lives

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LCSH in Dublin Core

• Encoding Scheme for DC Subject

• No easy way to draw on equivelent terms and cross-references

• Abstract Model, RDF and SKOS are enabling applications to make use of the whole vocabulary

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LCSH as a Web Service!

• Uses principles of linked data

• lcsh.info -> id.loc.gov

• People noticed when taken down

• Links to French Subject Headings

• URIs for Literal String lookup• http://id.loc.gov/authorities/label/World Wide Web

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Swedish National LibraryRDF Data

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Other Vocabularies

• Thesaurus for Economics• French Subject Headings• Swedish Subject Headings• IconClass (not on web yet)• OCLC Terminology Services• Dewey Decimal Classification• Virtual International Authority File (VIAF)• Faceted Application of Subject Terminology

(FAST)

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Virtual International Authority File (VIAF)

• http://viaf.org/

• http://viaf.org/viaf/data

• 20+ Authority Files

• Map/Reduce in Hadoop

• ODC-By License For attribution at triple level, using OCLC

URI is sufficient

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Social Networks of Archival Context

Image From: http://inkdroid.org/journal/2010/08/12/archival-context-on-the-web/

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Linking Lives – Screenshots from P. Johnston

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Linking Lives – Screenshots from P. Johnston

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Resource Description and Access

• Current focus on MARC Much criticism Within MARC, not a tremendous change Different problems outside of MARC

• Possible focus outside of MARC RDA as realization of FRBR RDA as Metadata Vocabularies RDA as related to Bibo

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RDA as Metadata Vocabularies

• RDA elements, roles and vocabularies have been provisionally registered

• IFLA FRBRer and ISBD elements and vocabularies have been officially registered

• Discussions about long term maintenance of both RDA and the vocabularies

• Effort to create multi-language RDA Vocabularies

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Metadata Registries

• Formerly NSDL Registry Now “Open Metadata Registry” Managing Vocabularies Providing Vocabulary Services

• RDA – Now adding translations• IFLA Work

FRBR, FRAD, FRSAD, ISBD

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BIBO and RDAVocab

• Open question re: alignment DCMI Vocabulary Management & Alignment

• Simplified view of Bib Data is useful Interlinking with more general data Interlinking with non-library domain data

• FRBR as internal model for library domain

• Examples

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Dublin Core Efforts

• Dublin Core Metadata Initiative, more than Dublin Core Metadata Element Set

• Dublin Core Abstract Model

• Application and Description Set Profiles

• Harmonization, not Normalization

• Vocabulary Management Infrastructure Including Mapping Efforts

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DCAM Resource Model

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DCAM Resource Model: Subtle Difference

• Property-Value pairs built around notion of “Described Resource”

• Centralizing triples around a single object Becoming Property-Value pairs

• Preserving DC 1:1 Principle by including descriptions of “related resource”

• How to validate???

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Conclusions

• Distributed bibliographic control environment Linking Data Focus on identification over description

• “In short, by treating values as non-literal resources and assigning URIs to them we give ourselves (and others) the hooks on which to hang further descriptions.” - Andy Powell

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W3C Linked Library Data Incubator

• Collected, Curated and Clustered over 50 Use Cases

• Mined use cases for functional requirements and design patterns

• Recommendations to W3C Should lead to Working Groups

(or new Community Groups)

• http://www.w3.org/2005/Incubator/lld/

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Other Activities

• ALCTS/LITA Linked Library Data IG• IFLA Semantic Web IG

https://wiki.d-nb.de/x/vA10Ag

• Open Knowledge Foundation http://okfn.org/

• CKAN Linked Library Data Group: http://ckan.net/group/lld

• LC’s Bibliographic Framework Initiative http://www.loc.gov/marc/transition/

• IGELU Linked Data Interest Group http://igelu.org/special-interests/lod

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Thanks!

corey.harper@nyu.edu

212.998.2479

@chrpr

http://delicious.com/charper/lawditalk

Questions?