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Building the Open University's Web of Linked Data

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Presentation at the Commonwealth of Learning workshop on taxonomy for education, 15-16/08/2011

Presentation at the Commonwealth of Learning workshop on taxonomy for education, 15-16/08/2011

Published in: Technology, Education

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  • 1. Building the Open University’s Web of Linked Data
    Mathieu d’Aquin and the LUCERO team
    @mdaquin
    Knowledge Media Institute, the Open University
    LUCERO project
    lucero-project.info – data.open.ac.uk
  • 2. Linked Data
    Principles and technologies for a Web of Data
    Data objects uniquely identified by web addresses: URIs
    A graph data model: RDF
    For linking data objects to data objects
    … at the scale of the Web
  • 3. LOD cloud
  • 4. The Open University
    The biggest university in the UK (200,000 students)
    One of the youngest (40 years)
    Most teaching done at a distance
    1 campus, 13 regional centers
    Committed to “Open”:
    Open educational material available as podcasts (iTunes U), units of course material (OpenLearn), etc.
    Tradition of investing in new technology for teaching, learning, knowledge sharing, etc.
    Role of the Knowledge Media Institute (KMi)
  • 5. So Linked Data for the OU?
    RAE
    DBPedia
    Data from
    Research
    Outputs
    OpenLearn
    Content
    ORO
    Exposed as linked data, our data interlink with each other and the external world: become part of the “global data space” on the Web
    Archive of
    Course
    Material
    Library’s
    Catalogue
    Of Digital
    Content
    geonames
    data.gov.uk
    Currently: OU public data sit in different systems – hard to discover, obtain, integrate by users.
    A/V Material
    Podcasts
    iTunesU
    BBC
    DBLP
  • 6. data.open.ac.uk
  • 7. The data.open.ac.uk Stack
    Applications
    Institutional repository data
    Research Data (Arts)
    Organizational infrastructure
    Technical infrastructure
  • 8. Expose
    Store
    Collect
    Extract
    Link
    Ontologies
    Scheduler
    Cleaning rules
    RDF file (add) RDF file (delete)
    URL redirection rules
    RSS Extractor
    Delete (1)
    Add (2)
    RDF Cleaner
    Web Server
    ORO, podcast
    RSS feed
    RDF file (add) RDF file (delete)
    Triple Store
    RSS Updater
    SPARQL
    endpoint
    RDF Extractor
    New items
    Obsolete items
    Each datasets
    Index
    Entity Name System
    Search
    XML Updater
    URI creation rules
    Lib, courses, loc
    Planning + Logging
    Generic process
    Dataset specific process
  • 9. Method for a exposing a dataset
    • Identify data
    • 10. Get sample data
    • 11. Identify Copyright Issues
    • 12. Identify possible links
    • 13. Identify users and usage
    Initial Meeting with Data Owner
    Lucero Core Team
    Data Owner
    Data Modeling sessions
    Lucero KMi Team
    • Find reusable ontologies
    • 14. Map onto the data
    • 15. Identify uncovered parts
    • 16. Define URI Scheme
    Data Modeling Validation
    Lucero Core Team
    Lucero members
    Data Owner
    Development of Extractor
    URI Creation Rules Definition
    Deployment
    Lucero KMi Team
  • 17. Datasets
    Already “officially” in place:
    ORO: more than 18,000 publications from OU researchers
    Podcasts: 2,500 audio and video tracks from podcast.open.ac.uk, linked to the relate courses
    Study at the OU: more than 600 live module descriptions
    OpenLearn: more than 550 Units of course material
    KMi Staff and Planet newsletter
    Open Arts Archive
    Currently being processed:
    OU Buildings in MK and regional centers
    Library Catalogue
    YouTube channel
    Old Courses
    “Reading Experience Database” project
    People Profiles
  • 18. Links and Vocabularies
    We link to
    Geonames for course availability
    Education.data.gov.uk to reuse their representation of the Open University
    Data.ordnancesurvey.gov.uk for postcodes of OU buildings
    Dbpedia.org for Arts History dataset
    We almost only reuse vocabularies:
    BIBO for publications
    FOAF for people
    Dublin Core for a lot of things
    W3C Ontology for Media Resources for podcasts and Youtube videos
    LODE (linkedevents) for events
    MLO and XCRI for course description
    GoodRelations for prices and offers
    AIISO for organizational structure
    And connect taxonomies
    The Local Open University topic categories
    The iTunes U categories
    The Library of Congress Subject Headings
    JACS codes
  • 19. Screenshot of the dataset page
  • 20. Applications
    For education
    Mobile podcast explorer, podcast explorer on TV
    OU Building Map, OU location tracker (cf. foursquare)
    OU Expert Search
    Connecting courses/OpenLearn to relevant podcast
    OU Course Profile Facebook app using list of courses, “Study Buddy” app connecting facebook users to relevant courses
    For Research
    Display connections in a research community
    Research Data/Impact Analysis
    Connection research datasets to external data
  • 21.
  • 22. Example application: Link OpenLearn to relevant course/podcasts
  • 23. ROLE widget
  • 24. Example Application: keep track of location, meetings, tutorials, at the OU
  • 25. Example application: exploring research communities
  • 26. Example application:
    Expert Search using publication information and connecting to contact information within the OU
  • 27. Lean-back podcast viewer
  • 28. Example application: Explore Information about a person in the “Reading Experience Database” based on data provided by DBPedia (Linked Data version of Wikipedia)  New ways to look at humanities research data
  • 29. Where this is going
    More and more integration at the OU:
    Link to podcasts, iTunes U, Youtube on course pages in Study at the OU (Comms/Student Services/IT)
    Use in the “Course profile” Facebook Application (IT/Comms)
    RADAR: research audit/assessment using linked data (KMi[Vanessa]/Research School)
    Mobile Course/Qualification explorer (Comms)
    OU Events in RDFa (Comms)
  • 30.
  • 31. Integrating Open Educational Material in course descriptions
  • 32. Radar
  • 33. Explore
    Explore the courses, qualifications and open educational resources available on a particular topic in one place.
  • 34. Why is it important?
    The OU has been the first University to expose its data as linked data: http://data.open.ac.uk
    Now widely recognized as a critical step forward for the HE sector in the UK (and worldwide)
    Favor transparency and reuse of data, both externally and internally
    Reduces cost of dealing with our own public data: integration and reuse by design
    Enable both new kinds of applications, and to make the ones that are already feasible more cost effective
    Many other UK universities have now followed our example:
    Lincoln, Southampton, Edinburg, Oxford, …
    And others in other countries are setting up similar initiatives (Muenster, Loja, UPM, CNR…)
  • 35. Where this is going
    Linked data across universities
    More and more UK and European university creating their linked data platform (following us!)
    Towards data.ac.uk?
    LinkedUniversities.org – providing common vocabularies and tools so that linked data from different universities can integrate
    Aggregation of video material from Open Educational Repositories
    Major Challenge: Common/linked categorization scheme and tag space
    Integration with Schema.org/LRMI
  • 36.
  • 37. Thank You!
    lucero-project.info
    data.open.ac.uk
    @mdaquin
    @fzablith
  • 38. People
    SalmanElahi
    ((Ex)-Dev)
    Carlo Allocca
    (Dev)
    Jane Whild
    (Admin)
    FouadZablith
    (Dev)
    KMi
    AndriyNikolov
    (linking)
    Enrico Motta
    (SGP)
    Mathieu d’Aquin
    (PD)
    Arts
    Suzanne Duncanson-Hunter
    John Wolfe
    Paul Lawrence
    Richard Nurse
    ((ex-)PM)
    Owen Stephens
    (PM)
    Stuart Brown
    Com./
    Student
    Comp.
    Services
    Data Owners
    Non Scantlebury
    Library
    Specialists
    Arts Specialists
    OU Library