Perspectives on Tag-clouds for Supporting Reflection in Self-organized LearningChristian GlahnMarcus Specht and Rob KoperOpen University of the NetherlandsExploitation of Usage and Attention Metadata Workshop (EUAM’09)Lübeck, 28 September 2009

This presentation is about ...Tagging... and ...

Tag-clouds

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How is this related to attention metadata?

Applying attention metadata to the domain of learning

Tags and AttentionTags 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 MetadataWhat are the practical (im|ap)plicationsfor using “attention descriptors”?

How is this related to attention metadata?

Self-controlledUnguidedIncidentalSelf-organized learningUnstructuredEmbedded in practice

Self-controlledUnguidedKnowledgeworkers’learningUnstructuredEmbedded in practice

How to supportincidental learningof knowledge workers?

Reflection is essential forthe learning of practitionersPlanningMonitoringEvaluating(Schön, 1983)

Reflection needs Information

Reflection needsLocationContextPeersProcessesProjectsPresenceCollaborationConceptsTimeParticipationEvents

LocationContextPeersProcessesProjectsPresenceCollaborationConceptscan be IdentifiedTimeParticipationEvents

LocationContextPeersProcessesProjectsPresenceCollaborationConcepts can beConstructed TimeParticipationEvents

Context construction principles for reflection supportPerspectiveandContrast

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 FocusCurrent SolutionGlobal tag usageBookmark feedHigh activity times are under representedLow activity times are over representedProposed AlternativeGlobal tag usageCompare against global tag usage of last visit (e.g. > 1 day) Emphasize recency

High activity times are under represented

Low activity times are over represented

What are the differences of the impact onreflection and motivationfor personal information management?

Case 2: Peer Focus

Shared Interestsand Network Trends

Participation FocusShared InterestsSocial tag usage in the networkSocial value of personal tagsNetwork TrendsRecent Social tag usage in the networkPersonal usage of social tags

Learning Centred Context Framework

Participation FocusShared InterestsSocial tag usage in the networkSocial value of personal tagsIntegration in the network Social value of taggingNetwork TrendsRecent Social tag usage in the networkPersonal usage of social tagsIntegration in the dynamics of the networkSocial dynamics of tagging

Integration in the network

Social value of tagging

Integration in the dynamics of the network

Social dynamics of tagging

Future WorkRefining the identification ofattention descriptors

Thank you for your attentionChristian GlahnCELSTECOpen University of the NetherlandsE-Mail: christian DOT glahn AT ou DOT nlhttp://www.ou.nl - http://celstec.org http://lo-f.at/glahn/ - http://www.slideshare.com/phish108