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

1. Linked Library Data, LOD-LAM, &
the Dublin Core Metadata Initiative
Presented 2012-06-01
Linked Ancient World Data Institute
Corey A Harper

2. Topical Overview
• - Value Vocabs
• Talk outline:
- id.loc
* A few principles that didn't come up
yesterday - fast
- Open vs. Closed world - viaf
assumption - Instance data
- Graph Merging - British Library stuff & more
* LOD-LAM - W3C Incubator Group
* Libraries in the LOD-LAM - Archives
- RDF Vocabs - ALA, IFLA, ExL, & more
- Non-Library * DCMI
* BiBo
- DCAM
* FRBR Fake
* DCterms - Metadata Registries
- Library - Vocabulary Alignment
* Official FRBR * Where does this fit?
* ISBD & other IFLA * Services from Libraries & Library
* MARC 21 Data?
* BibFrame * Use cases for LAWDI & AW
* RDAdigi Scholarship
2012-06-01 Linked Ancient World Data Institute 2

3. 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
2012-06-01 Linked Ancient World Data Institute 3

4. Library Metadata
• Rich stores of MARC, MODS, &c.
• Robust Controlled Vocabularies
 Subject Heading lists
 Code lists
 Thesauri
• Emerging data model in FR*
2012-06-01 Linked Ancient World Data Institute 4

5. Era of
“Perpetual
Metadata
Heterogeneity”
--or--
2012-06-01 Linked Ancient World Data Institute 5

6. 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
2012-06-01 Linked Ancient World Data Institute 6

7. 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)
2012-06-01 Linked Ancient World Data Institute 7

8. 2012-06-01 Linked Ancient World Data Institute 8

9. 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
2012-06-01 Linked Ancient World Data Institute 9

10. 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
2012-06-01 Linked Ancient World Data Institute 10

11. 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
2012-06-01 Linked Ancient World Data Institute 11

12. 2012-06-01 Linked Ancient World Data Institute 12

13. 2012-06-01 Linked Ancient World Data Institute 13

14. Swedish National Library
RDF Data
http://blog.libris.kb.se/semweb/?p=7
Image courtesy of Martin Malmstem
2012-06-01 Linked Ancient World Data Institute 14

15. Image courtesy of Ed Summers
2012-06-01 Linked Ancient World Data Institute 15

16. Image courtesy of Ed Summers
2012-06-01 Linked Ancient World Data Institute 16

17. 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)
2012-06-01 Linked Ancient World Data Institute 17

18. 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
2012-06-01 Linked Ancient World Data Institute 18

19. Social Networks of Archival Context
Image From: http://inkdroid.org/journal/2010/08/12/archival-context-on-the-web/
2012-06-01 Linked Ancient World Data Institute 19

20. Linking Lives – Screenshots from P. Johnston
2012-06-01 Linked Ancient World Data Institute 20

21. Linking Lives – Screenshots from P. Johnston
2012-06-01 Linked Ancient World Data Institute 21

22. 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
2012-06-01 Linked Ancient World Data Institute 22

23. RDA as Metadata Vocabularies
Slide Adapted from Diane Hillmann
• 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
2012-06-01 Linked Ancient World Data Institute 23

24. Metadata Registries
• Formerly NSDL Registry
 Now “Open Metadata Registry”
 Managing Vocabularies
 Providing Vocabulary Services
• RDA – Now adding translations
• IFLA Work
 FRBR, FRAD, FRSAD, ISBD
2012-06-01 Linked Ancient World Data Institute 24

25. 2012-06-01 Linked Ancient World Data Institute 25

26. 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
2012-06-01 Linked Ancient World Data Institute 26

27. 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
2012-06-01 Linked Ancient World Data Institute 27

28. DCAM Resource Model
2012-06-01 Linked Ancient World Data Institute 28

29. 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???
2012-06-01 Linked Ancient World Data Institute 29

30. 2012-06-01 Linked Ancient World Data Institute 30

31. 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
2012-06-01 Linked Ancient World Data Institute 31

32. 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/
2012-06-01 Linked Ancient World Data Institute 32

33. 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
2012-06-01 Linked Ancient World Data Institute 33

34. Thanks!
Questions?
corey.harper@nyu.edu
212.998.2479
@chrpr
http://delicious.com/charper/lawditalk
2012-06-01 Linked Ancient World Data Institute 34