Transcript W3C Library Linked Data Incubator Group

W3C Library Linked Data
Incubator Group
(LLD XG)
Antoine Isaac
Europeana
Vrije Universiteit Amsterdam
[email protected]
SWIB10, Nov. 29 2010
Let’s start with a Linked Data cloud!
Linked Library Cloud beginning 2008
[Ross Singer, Code4Lib2010]
http://code4lib.org/conference/2010/singer
Linked Library “sector” in 2010
Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/
Useful vocabularies
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
Growing interest for linked data in the
library community
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 was locked in records
• While it does maintain links to the outside world
• Bibliographic and web references
• Shared vocabularies
• Same books!
Unleash library data!
A vision for 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
• Potential data consumers deserve some help, too
Linking strategy
Linking strategy
• Links to library-originated sources
– VIAF, LCSH, DDC, UDC, Worldcat, PND…
• Links to resources from our cultural 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 groups: 1 year
• Light administration
• Not W3C Recommendations, but “innovative ideas
for specifications, guidelines, and applications that
are not (or not yet) clear candidates as Web
standards”
http://www.w3.org/2005/Incubator/
LLD Steps
1. Charter
Co-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.
Planned deliverables
Report presenting the landscape of LD development in the
library domain and related sectors, including:
1. Use cases
Gathering use cases and case studies demonstrating successful
implementation of SW technologies in libraries and related
sectors
http://www.w3.org/2005/Incubator/lld/charter
Planned deliverables
Report presenting the landscape of LD development in the
library domain and related sectors:
1. Use cases
2. Relevant technology pieces
– 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
http://www.w3.org/2005/Incubator/lld/charter
Leaving scope open
The incubator group [scope] is 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
LLD Steps
1. Charter
LLD Steps
1. Charter
2. Gather participants
– 50 participants
– 22 W3C member organizations
– 13 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
Anette Seiler
Asaf Bartof
Kendall Clark
Kevin Ford
Peter Murray
Lars Svensson
Mark van Assem
Alex Constantin
Mike Bergman
Complete list at http://www.w3.org/2000/09/dbwg/details?group=44833&public=1
Steps
1. Charter
2. Get participants
3. Start work!
Use Cases
• Call for use cases and
case studies
• 45 cases were gathered
http://www.w3.org/2005/Incubator/lld/wiki/UseCases
Use Cases
6 clusters
• Bibliographic data
• Authority data
• Vocabulary alignment
• Archives and heterogeneous data
• Citations
• Digital objects
http://www.w3.org/2005/Incubator/lld/wiki/UseCases
Use Cases
Descriptions focusing on
• Goals
• Usage scenarios
• Application of linked data for the given case
• Problems and Limitations
Use Cases
Further curation
• Refine into more abstract scenarios
• Relate to other similar activities
JISC cases for open bibliographic data
http://obd.jisc.ac.uk
• Relate use cases to technology issues
http://www.w3.org/2005/Incubator/lld/wiki/UseCases
Technology issues
• Conceptual Models
E.g., FR family
• Applying SemWeb Technology to Library Data
E.g., Re-using and extending available ontologies
• Semantic Web/LD “Environmental Issues”
E.g., Linking across datasets
• Management and Distribution of Data
E.g., updates
• Community and Management Issues
E.g., strategic guidance & business models
http://www.w3.org/2005/Incubator/lld/wiki/Topics
Vocabularies
• Gathering vocabularies used in use cases
– “element sets”, ontologies (Dublin Core, SKOS)
– value vocabularies (VIAF, LCSH, GND)
• Identifying gaps and overlaps
Datasets
• Starting a reference list of available data
• Will feed into the LOD cloud via CKAN
http://ckan.net/group/lld
Dissemination
• Gathering useful material
Presentations, including tuff re-used in this presentation!
Resources on terminology
• Relevant events
Looking at the future
• Fostering collaboration among actors interested in
porting cultural assets to the Linked Data Web
Libraries, museums, archives, publishers
• Proposing a relevant scope and organization for
future targeted work
Identify obstacles requiring further work or guidance
Open work process
• Publicly readable LLD XG wiki
http://www.w3.org/2005/Incubator/lld/wiki/
• Publicly readable minutes for teleconference calls
• 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
>100 mails per months on models, datasets, URIs…
http://lists.w3.org/Archives/Public/public-lld/
• Twitter hashtag
#lldata
Thanks!
Acknowledgements: all LLD XG participants
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
Anette Seiler
Asaf Bartof
Kendall Clark
Kevin Ford
Peter Murray
Lars Svensson
Mark van Assem
Alex Constantin
Mike Bergman
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/03912/E9666896A50FDDE5F7F1
5A17C11219A7FBCBBC50.html
• http://www.europeana.eu/portal/record/03903/95D8DA53C17F227BD27
BCC148F79238FD6E2443E.html
(Europeana links give access to resources on original sites)