social media and student learning: using analytics to visualise twitter communication in the...
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Social Media and Student Learning: Using Analytics to Visualise Twitter Communication in the Classroom
Sharon StoergerPELC11April 7, [email protected]
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Agenda• Social media
– What is it & why is it valuable?– Why Twitter?
• Information visualisation– What is it?– Why should I visualise?– What are educational uses of information
visualisation?
• Visualising Twitter data• The future
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What is social media?
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One Definition (boyd & Ellison, 2007)
• Web-based services that allow individuals to:– construct a public or semi-public
profile within a bounded system;
– articulate a list of other users with whom they share a connection; and
– view and traverse their list of connections and those made by others within the system.
http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html
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Why is social media valuable?
• Increase communication• Increase feelings of
connectivity• Increase online learning
community• Increase learning
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http://twitter.com
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Why Twitter?• Microblogging (140 characters)• Easy-to-use• Push down communication• Not email
– Zero clutter– Students social media > email (Roblyer et al.,
2010)
• Personal Learning Network (PLN)– Learning through connections– Connectivism (Siemens, 2004)
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Definitions (Card et al., 1999, p. 7)
• Visualisation: The use of computer-based, interactive visual representations of data to amplify
cognition.
• Information visualisation: The use of interactive visual representations of abstract,
nonphysically based data to amplify cognition.
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What is information visualisation?
• Robertson, Card, & Mackinlay (1989)– First use of the term “information visualisation”
– Cognitive amplification, interactivity, animation
• Represent data – visual form• External cognition aids
– Maps, charts, graphs, diagrams
– Text clouds, animations– Social media relationships (e.g., Hansen, 2011)
– Mashups (e.g., Google Maps/Google Earth)
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“Evolution” of Information Visualisation
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Information Visualisation = Mainstream
• Today’s tools – Free, interactive– Bring data to non-
experts
• Journalists – NY Times– http://tinyurl.com/45md7ur
• Artists– Brooke Singer– Databody – http://www.bsing.net/databody.
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Q: WHY SHOULD I VISUALISE?
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A Picture is Worth 1,000 Words
Pictures can attract
attention faster than
other media (Barnard,
1927)
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Reference Model for Visualisation (Card et al., 1999, p. 17)
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The Language of the Eye• The User Illusion
(1999)
• Sight faster– Bandwidth– Computer network
• Better understanding– Eye – Mind
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http://www.octium.eu/en/index.php/information-systems
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TMI: Too Much Information• Twitter users (e.g., Rao, 2011)
– 572,000 accounts created on March 12, 2011
– 460,000 (ave.) new accounts/day
– Mobile users are up 182% from 2010
• Tweets – the numbers– 140 million Tweets (ave.)/day
– 50 million Tweets sent per day, a year ago
– Record tweets = 177 million March 11, 2011
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Visualising Twitter Traffichttp://vimeo.com/11302556
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Visualisation = Data Compression
• David McCandless, 2010• Data is the new oil• Or is data the new soil?
– Fertile – Well-tilled medium– Visualisations = data flowers
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Education-related Reasons to Visualise• Insight (not pictures)
• New way to see & experience information
• Hidden patterns, connections = revealed
• Narrative = clarified
• Amplify cognition - sense making (Card et al., 1999; Larkin & Simon, 1987)
• Self-organising maps = brain organisation
• Integrate offline-online experiences
• Digital & critical competencies
Image: http://www.brainandlearning.
eu/
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Information Visualisation Example
• Ward Shelley’s “History of Science Fiction”• Rhetorical drawings• http://scimaps.org/submissions/7-digital_libraries/maps/thumbs/024_LG.jpg
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Visualisation Activities• Reimagine existing assignments• “Software Studies” (Manovich, 2008)
– Use & evaluate software– Limitations & biases– Influence
• Analyse and produce visualisations– Visual literacy– Functional literacy (Selber, 2004)
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What Twitter information can I visualise?
Twitter• Tweets (e.g., @csoleil)• Hashtags (e.g.,
#socmedia)/backchannel communication
• Retweets• Replies• Links
Projects• Text• Personal data• Social data
• Create = digital artifacts
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HOW DO I VISUALIZE TWITTER DATA?
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Text clouds: Wordle http://www.wordle.net/
• Common text visualiser• “A toy for generating word clouds”
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Text Cloud: Tagxedohttp://www.tagxedo.com/
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Text & Hashtag Clouds: TweetStatshttp://tweetstats.com/
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Wordle Plus: Many Eyeshttp://www-958.ibm.com/software/data/cognos/manyeyes/
• “…like Facebook for infovis nerds” (Sorapure, 2009, p. 63)
• IBM researchers (Fernanda Viegas, Martin Wattenberget, etc.)
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Text Analysis Portal for Research (TAPoR)http://portal.tapor.ca/portal/portal
• Tools analysis and retrieval• Representative texts experimentation
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Conversations: Twitterfall http://twitterfall.com/
• Real time tweet searching• New tweets fall on the page
Pause
tweets
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Statistics: TweetStathttp://tweetstats.com/
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Networks: Mentionmaphttp://apps.asterisq.com/mentionmap/#
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Twitter Friends Network Browserhttp://www.neuroproductions.be/twitter_friends_network_browser/
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Visualisation Concerns• “Eye candy”
– “Chart junk” graphics (Card et al., 1999)
– Graphical distortion - highlights anomalies (Tufte, 1983)
• Ease-of-use – Less familiar with data sets
– Not fully understand data– Mislead/confuse consumers
• Evaluation of effectiveness– Criteria, measurements, methods???– Experience subjectivity
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Rashômon (4 versions of the truth)http://www.youtube.com/watch?v=xCZ9TguVOIA
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What’s Next?• Programs
– National Visual Analytics Centers (NVACs) - 2005– Analyse agency information needs
• Disciplines– Technology, art, science (van Wijik, 2005)
– Humanities– Education
• Tools– Dashboards, visual analytics, simple graphs– Interactive visualisations – Mobile applications Public participation
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The Future? http://www.rottentomatoes.com/m/minority_report/trailers/11129681
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Thank You!!!
Questions? Sharon Stoerger
Email: [email protected]: sharon.stoergerTwitter: csoleilSecond Life: Cerulean Soleil
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Read More About It• Card, S. K., Mackinlay, J. D., Shneiderman, B. (1999). Readings in
information visualization. San Francisco, CA: Morgan Kaufmann Publishers, Inc.
• Few, S. (2010). Information visualization, design and the arts: Collision or collaboration? Visual Business Intelligence Newsletter.
• Johnson, L., Levine, A., Smith, R., Stone, S. (2010). The 2010 horizon report. Austin, TX: The New Media Consortium.
• Larkin, J., & Simon, H. A. (1987). Why a diagram is (sometimes) worth ten thousand words. Cognitive Science, 11(1), 65-99.
• Manovich, L. (2010). What is visualization. http://manovich.net/2010/10/25/new-article-what-is-visualization/
• Moretti, F. (2005). Graphs, maps, trees: Abstract models for a literary history. London: Verso
• Sorapure, M. (2009). Information visualization, Web 2.0, and the teaching of writing. Computers and Composition, 27, 59-70.
• Tufte, E. R. (1983). The visual display of quantitative information. Cheshire, CT: Graphic Press.
• van Wijk, J. J. (2005). The value of visualization. In C. Silva, E. Groeller, H. Rushmeier (eds.), Proceedings of IEEE Visualization 2005, 79-86.
• Ware, C. (2004). Information visualization: Perception for design, 2nd ed. San Francisco: Morgan Kaufmann Publishers, Inc.