Transcript W3C Library Linked Data Incubator Group

W3C Library Linked Data
Incubator Group
Antoine Isaac
Vrije Universiteit Amsterdam
Europeana
Talis Open Day: Linked Data and Libraries, London, July 21st 2010
Let’s start with references
Landmark Linked Data implementations by library actors
• Swedish National Library’s Libris catalogue and thesaurus
libris.kb.se/
• Library of Congress’ vocabularies, including LCSH
id.loc.gov/
• DNB’s Gemeinsame Normdatei
d-nb.info/gnd/
• BnF’s RAMEAU subject headings
stitch.cs.vu.nl/rameau/
• OCLC’s DDC classification and VIAF
dewey.info/ viaf.org/
• NL of Hungary’s catalogue and thesauri
oszkdk.oszk.hu/resource/DRJ/404
Also relevant!
• STW economy thesaurus
zbw.eu/stw
• Social Science thesaurus
lod.gesis.org
• GEMET environmental thesaurus
eionet.europa.eu/gemet
• Agrovoc
aims.fao.org/
• New York Times subject headings
data.nytimes.com/
• Scientific publications
(among others) dblp.rkbexplorer.com/
Linked Library Cloud beginning 2008
[Ross Singer, Code4Lib2010]
http://code4lib.org/conference/2010/singer
Linked Library Cloud mid-2010
Plus:
• Germany NL
• Hungary NL
• STW
• GEMET
• NYT
• Agrovoc
[Ross Singer, Code4Lib2010] http://code4lib.org/conference/2010/singer
Useful tooling
Available
• Dublin Core
• SKOS
• BIBO
• OAI-ORE
...
In progress
• RDA vocabularies
• FRBR@IFLA
dublincore.org/
www.w3.org/2004/02/skos/
bibliontology.com/
www.openarchives.org/ore/
metadataregistry.org/rdabrowse.htm
2010, Year 1 of library linked data?
Libraries and LD, the perfect match?
• Libraries have been producing metadata for ages
• Libraries (often) produce high-quality metadata
Libraries and LD, the perfect match?
• Library metadata is still locked in records
• While it does maintain links to the outside world
• Bibliographic and web references
• Shared vocabularies
• Same books!
Unleash library data!
A dream at the Dutch National Library
Johan Stapel, Koninklijke Bibliotheek
But there are obstacles
Emerging best practices?
• What vocabularies are being used, and is there emerging consensus about
which to use?
• What licenses (if any) are associated with the data?
• How much linking and interlinking is going on?
• What sorts of mechanisms does the publisher offer for getting the data:
sitemap, feeds, SPARQL, bulk download?
• What is the quality of the data: granularity, link integrity, vocabulary
usage.
• What approaches to identifiers for “real world things” have publishers
taken: hash, slash, 303, PURLs, reuse of traditional identifiers, etc.
• What are the relative sizes of the pools of library linked data?
• How are updates being managed?
Ed Summers
http://inkdroid.org/journal/2010/04/18/research-ideas-for-library-linked-data/
Connecting to more general LD Issues
Mike Uschold’s “semantic elephants”
• Proliferation of URIs, Managing Coreference
• Overloading owl:sameAs
• Versioning and URIs
http://lists.w3.org/Archives/Public/public-lod/2010May/0012.html
Also, gospel is needed
NAHSL
2009
What’s this I hear about the
Semantic Web?
• What is the Semantic Web?
• What does it have to do with bibliography?
• Does it make life better for patrons?
• Does it strengthen libraries?
• Is it practical?
• Where can we get some?
Stuart Weibel
http://www.slideshare.net/stuartweibel/semantic-web-technologies-changing-bibliographic-descriptions
Determine use case & business models
• Libraries may just publish data, but they can do more
– Connect library data to other data
– Integrate data from external sources in library systems
– Crowdsourcing?
• Potential data consumers deserve some help, too
Linking strategy
• Links to library-originated sources
– VIAF, LCSH, DDC, UDC
– RDA vocabularies
– Worldcat, TEL
• Links to resources from the “natural environment”
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Museums, archives
Scientific communities: bibliographic data & research data
Publishers
Europeana and other aggregators
Need for charting the LLD landscape
W3C incubator (XG) activity
• Short-lived working groups: 1 year
• Light administration burden
• Not W3C Recommendations, but “innovative ideas
for specifications, guidelines, and applications that
are not (or not yet) clear candidates as Web
standards”
Deliverables are, but XGs can trigger further W3C work
http://www.w3.org/2005/Incubator/
Example XGs
• Provenance
• Multimedia semantics
• Social Web
…
LLD Steps
1. Preparing a charter
Initial chairs: Tom Baker, Emmanuelle Bermès, Antoine Isaac
10 W3C initiating members
Aalto University Helsinki
DERI Galway
Competence Centre for Interoperable Metadata (KIM)
Library of Congress
Los Alamos National Laboratory
MIMOS
OCLC
Talis
University of Applied Sciences Potsdam
Vrije Universiteit Amsterdam
http://www.w3.org/2005/Incubator/lld/charter
To help increase global interoperability of library data on the
Web, by
bringing together people involved in Semantic Web activities—
focusing on Linked Data—in the library community and
beyond,
building on existing initiatives, and
identifying collaboration tracks for the future.
Activities
• Gathering use cases and case studies demonstrating successful
implementation of Semantic Web technologies in libraries and related
sectors
• Fostering collaboration among actors (libraries, museums, archives,
publishers) interested in porting cultural assets to the Linked Data Web
• Identifying relevant data models, vocabularies and ontologies and ways to
build or improve interoperability among them
• Identifying the need for the elaboration of new standards, guidelines &
best practices
• Identifying the areas of (Semantic) Web technology that could benefit
from the expertise of the communities represented in the Group
• Proposing a relevant scope and organization for work that follows on the
initial effort carried by the Group.
http://www.w3.org/2005/Incubator/lld/charter
Planned deliverables
Report presenting the landscape of Linked data development in the library
domain and related sectors, including:
• A use-case document that describes a number of real-world use cases,
case studies, outreach and dissemination initiatives targeted to the library
community and related sectors
• A document that describes relevant technology pieces, including
vocabularies and ontologies (e.g., SKOS), with the intended goal to identify
extension or interoperability requirements, and help determine what other
standards may be needed.
http://www.w3.org/2005/Incubator/lld/charter
Charter – leaving scope open
The incubator group has been initiated by actors from national libraries,
university libraries and research units, library vendors companies and
other interested stakeholders. Its scope is however not limited to libraries
as institutions, but is meant to involve other cultural heritage institutions,
partners from the publishing industry, and other relevant domains.
Potential Links with other communities
• W3C eGovernment Interest Group
• EDItEUR
• Semuse
…
http://www.w3.org/2005/Incubator/lld/charter
Charter – leaving scope open
The Incubator could contribute feedback and ideas re.
other W3C area
• Experience in modeling and publishing data…
LLD Steps
1. Preparing a charter
2. Launch XG
May 21st 2010: http://www.w3.org/News/2010#entry-8803
LLD Steps
1. Preparing a charter
2. Launch XG
3. Get participants
– 43 participants
– 20 W3C member organizations
– 10 invited experts
Alexander Haffner
András Micsik
Andrew Houghton
Antoine Isaac
Bernard Vatant
Carlo Meghini
Dan Brickley
Dickson Lukose
Ed Summers
Emmanuelle Bermes
Felix Sasaki
Fumihiro Kato
Gordon Dunsire
Guenther Neher
Herbert Van De Sompel
Hideaki Takeda
Ikki Ohmukai
Jeff Young
Joachim Neubert
Jodi Schneider
Jon Phipps
Jonathan Rees
Kai Eckert
Karen Coyle
Kim Viljanen
Laszlo Kovacs
Marcia Zeng
Martin Malmsten
Michael Hausenblas
Michael Panzer
Mohamed Zergaoui
Monica Duke
Nicolas Delaforge
Oreste Signore
Ray Denenberg
Ross Singer
Stu Weibel
Thomas Baker
Tod Matola
William Waites
Wolfgang Halb
Complete list at http://www.w3.org/2000/09/dbwg/details?group=44833&public=1
Steps
1.
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4.
Preparing a charter
Launch XG
Get participants
Start work!
1. Use cases and case studies
2. Issue list
Case Template
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Background and Current Practice
Goal
Use Case Scenario
Application of linked data for the given use case
Problems and Limitations
Library Linked Data Dimensions / Topics
Plus other optional references
http://www.w3.org/2005/Incubator/lld/wiki/Use_Case_Template
First Cases
• Authority data enrichment
http://www.w3.org/2005/Incubator/lld/wiki/Use_Case_Authority_Data_Enrichmen
t
• Digital preservation
http://www.w3.org/2005/Incubator/lld/wiki/Use_Case_Digital_Preservation
Coming Case Work
• Contributions from XG participants
• And from the wider community
Calls for cases will be issued, stay tuned!
http://www.w3.org/2005/Incubator/lld/wiki/UseCases
Current LLD Issue List
• Conceptual Models
FR family, SKOS, non-bibliographic/authority data
• Applying SemWeb Technology to Library Data
Handling legacy data, available vocabularies (ontologies)
• Semantic Web/LD “Environmental Issues”
Identifiers, linking across datasets
• Management and distribution of data
Hosting, preservation, updates, web architecture
• Community and Management Issues
Outreach, strategic guidance & business models, licenses
http://www.w3.org/2005/Incubator/lld/wiki/Topics
Participate?
Core Incubator work
Participation to the LLD Incubator is still open
• Teleconferences and work on deliverables
http://www.w3.org/2005/Incubator/lld/
Everyone can follow our work without participating
• Publicly readable LLD XG wiki
http://www.w3.org/2005/Incubator/lld/wiki/
• Publicly readable LLD XG mailing list
http://lists.w3.org/Archives/Public/public-xg-lld/
Outside the LLD XG
We try to provide spaces to the wider LLD community
• LLD community wiki
http://www.w3.org/2001/sw/wiki/LLD
• LLD community mailing list
http://lists.w3.org/Archives/Public/public-lld/
• Twitter hashtag
#lldata
Thanks!
[email protected]
Pictures
• http://www.flickr.com/photos/nationalarchives/3048286070/
• http://www.europeana.eu/portal/record/04031/2D6FEB34557045A39A1
D62761DAE00FEAF8B48F0.html
• http://www.europeana.eu/portal/record/03903/8C5C6AEFF6B50DCCEDF6
A23A99DD3A2D66AEB2CC.html
• http://www.europeana.eu/portal/record/03903/1C123C986FDEBFCD0E30
7AFF8969F07F95BFCA49.html
• http://www.europeana.eu/portal/record/03903/78FA3F8B4299B45C25C3
95345D3D16ED24EA7F4F.html
• http://www.europeana.eu/portal/record/04031/CBF262142EAC88529CAA
8F8D8A6969B72F8D3541.html
• http://www.europeana.eu/portal/record/03903/95D8DA53C17F227BD27
BCC148F79238FD6E2443E.html
(Europeana links give access to resources on original sites)