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W3C Library Linked Data Incubator Group (LLD XG). Antoine Isaac Europeana Vrije Universiteit Amsterdam aisaac@few.vu.nl. SWIB10 , Nov. 29 2010. Let’s start with a Linked Data cloud!. Linked Library Cloud beginning 2008. [Ross Singer, Code4Lib2010].

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w3c library linked data incubator group lld xg

W3C Library Linked DataIncubator Group (LLD XG)

Antoine Isaac

Europeana

Vrije Universiteit Amsterdam

aisaac@few.vu.nl

SWIB10, Nov. 29 2010

linked library cloud beginning 2008
Linked Library Cloud beginning 2008

[Ross Singer, Code4Lib2010]

http://code4lib.org/conference/2010/singer

linked library sector in 2010
Linked Library “sector” in 2010

Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/

useful vocabularies
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

libraries and ld the perfect match
Libraries and LD, the perfect match?
  • Libraries have been producing metadata for ages
  • Libraries (often) produce high-quality metadata
libraries and ld the perfect match8
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!
slide10

A vision for the Dutch National Library

Johan Stapel, Koninklijke Bibliotheek

emerging best practices
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
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

what s this i hear about the semantic web
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?

http://www.slideshare.net/stuartweibel/semantic-web-technologies-changing-bibliographic-descriptions

determine use case business models
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 strategy18
Linking strategy
  • Links to library-originated sources
    • VIAF, LCSH, DDC, UDC, Worldcat, PND…
  • Links to resources from our cultural environment
    • Museums, archives
    • Scientific communities: bibliographic data & research data
    • Publishers
    • Europeana and other aggregators
w3c incubator xg activity
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
LLD Steps
  • 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

slide23

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
Planned deliverables

Report presenting the landscape of LD development in the library domain and related sectors, including:

  • 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 deliverables25
Planned deliverables

Report presenting the landscape of LD development in the library domain and related sectors:

  • Use cases
  • 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
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 steps27
LLD Steps
  • Charter
lld steps28
LLD Steps
  • Charter
  • Gather participants
    • 50 participants
    • 22 W3C member organizations
    • 13 invited experts
slide29

Alexander Haffner

AndrásMicsik

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

IkkiOhmukai

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

TodMatola

William Waites

Wolfgang Halb

Anette Seiler

AsafBartof

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
Steps
  • Charter
  • Get participants
  • Start work!
use cases
Use Cases
  • Call for use cases and case studies
  • 45 cases were gathered

http://www.w3.org/2005/Incubator/lld/wiki/UseCases

use cases32
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 cases33
Use Cases

Descriptions focusing on

  • Goals
  • Usage scenarios
  • Application of linked data for the given case
  • Problems and Limitations
use cases34
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
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
Vocabularies
  • Gathering vocabularies used in use cases
    • “element sets”, ontologies (Dublin Core, SKOS)
    • value vocabularies (VIAF, LCSH, GND)
  • Identifying gaps and overlaps
datasets
Datasets
  • Starting a reference list of available data
  • Will feed into the LOD cloud via CKAN

http://ckan.net/group/lld

dissemination
Dissemination
  • Gathering useful material

Presentations, including tuff re-used in this presentation!

Resources on terminology

  • Relevant events
looking at the future
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
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
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
Thanks!

Acknowledgements: all LLD XG participants

Alexander Haffner

AndrásMicsik

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

IkkiOhmukai

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

TodMatola

William Waites

Wolfgang Halb

Anette Seiler

AsafBartof

Kendall Clark

Kevin Ford

Peter Murray

Lars Svensson

Mark van Assem

Alex Constantin

Mike Bergman

pictures
Pictures
  • http://www.flickr.com/photos/nationalarchives/3048286070/
  • http://www.europeana.eu/portal/record/04031/2D6FEB34557045A39A1D62761DAE00FEAF8B48F0.html
  • http://www.europeana.eu/portal/record/03903/8C5C6AEFF6B50DCCEDF6A23A99DD3A2D66AEB2CC.html
  • http://www.europeana.eu/portal/record/03903/1C123C986FDEBFCD0E307AFF8969F07F95BFCA49.html
  • http://www.europeana.eu/portal/record/03903/78FA3F8B4299B45C25C395345D3D16ED24EA7F4F.html
  • http://www.europeana.eu/portal/record/04031/CBF262142EAC88529CAA8F8D8A6969B72F8D3541.html
  • http://www.europeana.eu/portal/record/03912/E9666896A50FDDE5F7F15A17C11219A7FBCBBC50.html
  • http://www.europeana.eu/portal/record/03903/95D8DA53C17F227BD27BCC148F79238FD6E2443E.html

(Europeana links give access to resources on original sites)