Perspectives on Tag-clouds

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Presentation held at the "exploitation of usage and attention metadata" workshop (EUAM09) on Sep. 28, 2009 in Lübeck, Germany

Presentation held at the "exploitation of usage and attention metadata" workshop (EUAM09) on Sep. 28, 2009 in Lübeck, Germany

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  • 1. Perspectives on Tag-clouds for Supporting Reflection in Self-organized Learning
    Christian Glahn
    Marcus Specht and Rob Koper
    Open University of the Netherlands
    Exploitation of Usage and Attention Metadata Workshop (EUAM’09)
    Lübeck, 28 September 2009
  • 2. This presentation is about ...
    Tagging
    ... and ...
  • 3. Tag-clouds
  • 4. Wait!
  • 5. How is this related to attention metadata?
  • 6. Applying attention metadata to the domain of learning
  • 7. Tags and Attention
    Tags are explicit interest expressions
    (Claypool, Le, Wased, & Brown, 2001)
    Visualisations of tag usage can highlight subconscious aspects of learning
    (Glahn, Specht, & Koper, 2009b)
    Aggregations of tag usage provide attention descriptors of learning processes
  • 8. What is described by “attention descriptors”?
    The Open Question for Attention Metadata
  • 9. The Open Question for Attention Metadata
    What are the practical (im|ap)plicationsfor using “attention descriptors”?
  • 10. How is this related to attention metadata?

  • 11. Self-controlled
    Unguided
    Incidental
    Self-organized learning
    Unstructured
    Embedded in practice
  • 12. Self-controlled
    Unguided
    Knowledgeworkers’learning
    Unstructured
    Embedded in practice
  • 13. How to supportincidental learningof knowledge workers?
  • 14. Reflection is essential forthe learning of practitioners
    Planning
    Monitoring
    Evaluating
    (Schön, 1983)
  • 15. Reflection needs Information
  • 16. Reflection
    needs
    Location
    Context
    Peers
    Processes
    Projects
    Presence
    Collaboration
    Concepts
    Time
    Participation
    Events
  • 17. Location
    Context
    Peers
    Processes
    Projects
    Presence
    Collaboration
    Concepts
    can be Identified
    Time
    Participation
    Events
  • 18. Location
    Context
    Peers
    Processes
    Projects
    Presence
    Collaboration
    Concepts
    can beConstructed
    Time
    Participation
    Events
  • 19. Context construction principles for reflection support
    PerspectiveandContrast
  • 20. In other words ...
    Putsets of attention descriptorsinto relation
  • 21. ReScope
    (Glahn, Specht, & Koper, 2008)
  • 22. Encode two sub-sets of Delicious.com tagsinto one tag-cloud.
    The idea behind ReScope
  • 23. The hypothesis
    Depending on the sub-sets reflection will focus on different aspects.
  • 24. Learning Centred Context Framework
  • 25. Case 1: Personal Focus
  • 26. Learning Centred Context Framework
  • 27. Personal Focus
    Current Solution
    Global tag usage
    Bookmark feed
    • High activity times are under represented
    • 28. Low activity times are over represented
    Proposed Alternative
    Global tag usage
    Compare against global tag usage of last visit (e.g. > 1 day)
     Emphasize recency
  • 29. What are the differences of the impact onreflection and motivationfor personal information management?
  • 30. Case 2: Peer Focus
  • 31. Shared Interestsand Network Trends
  • 32. Participation Focus
    Shared Interests
    Social tag usage in the network
    Social value of personal tags
    Network Trends
    Recent Social tag usage in the network
    Personal usage of social tags
  • 33. Learning Centred Context Framework
  • 34. Participation Focus
    Shared Interests
    Social tag usage in the network
    Social value of personal tags
    • Integration in the network
    • 35. Social value of tagging
    Network Trends
    Recent Social tag usage in the network
    Personal usage of social tags
    • Integration in the dynamics of the network
    • 36. Social dynamics of tagging
  • Future Work
    Refining the identification ofattention descriptors
  • 37. Thank you for your attention
    Christian Glahn
    CELSTEC
    Open University of the Netherlands
    E-Mail: christian DOT glahn AT ou DOT nl
    http://www.ou.nl - http://celstec.org
    http://lo-f.at/glahn/ - http://www.slideshare.com/phish108