Linked Library “sector” in 2010 Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch.
Useful vocabularies Available Dublin Core SKOS BIBO OAI-ORE... In progress RDA vocabularies dublincore.org/ bibliontology.com/ 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!
Johan Stapel, Koninklijke Bibliotheek A vision for the Dutch National Library
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
Connecting to more general LD Issues Mike Uschold’s “semantic elephants” Proliferation of URIs, Managing Coreference Overloading owl:sameAs Versioning and URIs
Also, gospel is needed
NAHSL 2009 Stuart Weibel 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?
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
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
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”
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
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
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
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 …
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
Use Cases Call for use cases and case studies 45 cases were gathered
Use Cases 6 clusters Bibliographic data Authority data Vocabulary alignment Archives and heterogeneous data Citations Digital objects
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 Relate use cases to 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
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
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 Publicly readable minutes for teleconference calls Publicly readable LLD XG mailing list
Outside the LLD XG We try to provide spaces to the wider LLD community LLD community wiki LLD community mailing list >100 mails per months on models, datasets, URIs… 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 D62761DAE00FEAF8B48F0.html A23A99DD3A2D66AEB2CC.html 7AFF8969F07F95BFCA49.html D3D16ED24EA7F4F.html 8F8D8A6969B72F8D3541.html 5A17C11219A7FBCBBC50.html BCC148F79238FD6E2443E.html (Europeana links give access to resources on original sites)