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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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    Perspectives on Tag-clouds Perspectives on Tag-clouds Presentation Transcript

    • 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
    • This presentation is about ...
      Tagging
      ... and ...
    • Tag-clouds
    • Wait!
    • How is this related to attention metadata?
    • Applying attention metadata to the domain of learning
    • 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
    • What is described by “attention descriptors”?
      The Open Question for Attention Metadata
    • The Open Question for Attention Metadata
      What are the practical (im|ap)plicationsfor using “attention descriptors”?
    • How is this related to attention metadata?

    • Self-controlled
      Unguided
      Incidental
      Self-organized learning
      Unstructured
      Embedded in practice
    • Self-controlled
      Unguided
      Knowledgeworkers’learning
      Unstructured
      Embedded in practice
    • How to supportincidental learningof knowledge workers?
    • Reflection is essential forthe learning of practitioners
      Planning
      Monitoring
      Evaluating
      (Schön, 1983)
    • Reflection needs Information
    • Reflection
      needs
      Location
      Context
      Peers
      Processes
      Projects
      Presence
      Collaboration
      Concepts
      Time
      Participation
      Events
    • Location
      Context
      Peers
      Processes
      Projects
      Presence
      Collaboration
      Concepts
      can be Identified
      Time
      Participation
      Events
    • Location
      Context
      Peers
      Processes
      Projects
      Presence
      Collaboration
      Concepts
      can beConstructed
      Time
      Participation
      Events
    • Context construction principles for reflection support
      PerspectiveandContrast
    • In other words ...
      Putsets of attention descriptorsinto relation
    • ReScope
      (Glahn, Specht, & Koper, 2008)
    • Encode two sub-sets of Delicious.com tagsinto one tag-cloud.
      The idea behind ReScope
    • The hypothesis
      Depending on the sub-sets reflection will focus on different aspects.
    • Learning Centred Context Framework
    • Case 1: Personal Focus
    • Learning Centred Context Framework
    • Personal Focus
      Current Solution
      Global tag usage
      Bookmark feed
      • High activity times are under represented
      • 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
    • What are the differences of the impact onreflection and motivationfor personal information management?
    • Case 2: Peer Focus
    • Shared Interestsand Network Trends
    • 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
    • Learning Centred Context Framework
    • Participation Focus
      Shared Interests
      Social tag usage in the network
      Social value of personal tags
      • Integration in the network
      • 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
      • Social dynamics of tagging
    • Future Work
      Refining the identification ofattention descriptors
    • 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