Wolfgang Reinhardt - University of Paderborn

Tracking the dynamics of social communities - Visualising altering word

clouds of Twitter groups

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What is Twitter?• 140 characters

• from mobile, client or web interface

• Followers

• Direct messages

• @Mentions (Replies) and Retweets

• #Hashtags

• Open API

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Who uses this?

3http://flickr.com/photos/thomcochrane/416206133/

Daily ChatterCommunicator Reporter

Exchanger

Different kind of people using microblogs

Java et al, 2007

http://www.flickr.com/photos/cogdog/601808418

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Learning ?

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• informal learning

• microsharing

• personal

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Thx for the last two slides

EduMedia 2009

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Overview

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Share in communication

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Statistics

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What‘s behind?

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Analysis application

• inspect communication from communities on Twitter

• goal: track the changes within the community

• personal and topic networks

• hashtags

• usernames

• extract content and statistical data

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Mashup ?

• Twitter API

• Yahoo Term Extraction Web Service API

• providing enriched data via API

• JSON encoded

• to be enhanced in upcoming versions

• using geo location

• using multiple extractors

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Conclusion / Outlook

• tool for analysing and visualising group communication on Twitter

• main statistical data about the group

• tracking dynamics

• create widgets and incorporate in other systems

• conference pages

• course-wikis

• PLEs

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Conclusion / Outlook

• enhance qualitative evaluation

• named entities

• sophisticated metrics

• visualize communications among users

• include links in the evaluation

• semantic closeness of tweets / persons

• Artefact-Actor-Networks

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Want to know more? http://twitter.com/wollepbhttp://isitjustme.dehttp://artefact-actor-networks.net

Thank you

Wolfgang ReinhardtUniversity of Paderborn

Institute of Computer ScienceWorking Group Didactics of Informatics

http://ddi.upb.de

Image sources

• http://medyasia.com/wp/wp-content/uploads/2009/08/bluebird_1680x1050.jpg

• http://de.fotolia.com/id/3805293

• http://www.flickr.com/photos/leapfrog_photo/2532068489

• http://upload.wikimedia.org/wikipedia/commons/c/c4/Old_door-dakhla-egypt.JPG

• http://www.flickr.com/photos/cogdog/601808418

• http://flickr.com/photos/thomcochrane/416206133/

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