Large scale Twitter collection of 2012 US election
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A short presentation on the data collection that the Social Media and Democracy Group at UW-Madison is doing around the 2012 US elections.
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Large scale Twitter collection of 2012 US election
- 1. 2012 Twitter collection Alexander Hanna Research Agenda Current Large scale Twitter collection of 2012 US Project Case Study election Future Approaches Alexander Hanna Department of Sociology University of Wisconsin-Madison ahanna@ssc.wisc.edu @alexhanna September 14, 2012
- 2. 2012 Twitter collection Alexander A Twitter-specific Research Hanna Agenda Research Agenda Current Project Case Study Future Approaches • How different is the political Twitterverse from the rest of the social graph? • What are the different modes of engagement between different types of elite users and their followers? • How does information flow from elite users to others?
- 3. 2012 Twitter collection Alexander A Twitter-specific Research Hanna Agenda Research Agenda Current Project Case Study Future Approaches • How different is the political Twitterverse from the rest of the social graph? • What are the different modes of engagement between different types of elite users and their followers? • How does information flow from elite users to others?
- 4. 2012 Twitter collection Alexander A Twitter-specific Research Hanna Agenda Research Agenda Current Project Case Study Future Approaches • How different is the political Twitterverse from the rest of the social graph? • What are the different modes of engagement between different types of elite users and their followers? • How does information flow from elite users to others?
- 5. 2012 Twitter collection Alexander Current Study Hanna Research Agenda Current Project Case Study Future Approaches • Structured to consider direct follow relationships • Constructing the political Twitterverse
- 6. 2012 Twitter collection Alexander Political elites Hanna Research Agenda Current Project Case Study • Candidates in national races Future Approaches • Party leadership • Media - Pundits, Reporters, Bloggers • Satirists • Celebrities • Advocacy Groups
- 7. 2012 Twitter collection Alexander Sampling Strategy Hanna Research Agenda Three levels - Elites and followers Current Project Case Study Future Approaches
- 8. 2012 Twitter collection Alexander Waves of collection Hanna Research Agenda Current Project Case Study Future Approaches Sampling at three different points • Pre-primary - Mid January • Post-primary - June 26 • Post-convention and pre-election - September 7
- 9. 2012 Twitter collection Alexander Data Collection and Processing Hanna Research Agenda Current Project Case Study Future • Twitter RESTful API for collecting follower lists Approaches • Twitter Streaming API for collecting tweets • Two streams - targeted sample stream and “gardenhose” (10% sample of all of Twitter) • Hadoop/MapReduce for analysis
- 10. 2012 Twitter collection Alexander Data size and storage Hanna Research Agenda Current Project Case Study • Gardenhose Future • 2.7 TB Approaches • 20-40mil tweets/day • 15-16 GB/day • Targeted sample: • 77,054 unique users • 103 GB • 500k-1mil tweets/day • Currently around 1 GB/day
- 11. 2012 Twitter collection Alexander Case Study in Agenda Setting Hanna Research Agenda Current Project Case Study Future Approaches Who establishes the media discourse? How do different elements of media try to set the discourse?
- 12. 2012 Twitter collection Alexander Trayvon Martin Hanna Research Agenda • February 26 - Martin Current Project killed Case Study • March 8 - CBS News Future Approaches interview with Martin’s parents • Week of March 12 - Media catches on, case more covered than presidential race • April 11 - State Prosecuter files charges • April 19 - Zimmerman released on bond
- 13. 2012 Twitter collection Alexander Twitter mentions Hanna Research Agenda 1.0 Current Project Case Study 0.8 Future Approaches 0.6 factor(Keyword) Count trayvon zimmerman 0.4 0.2 03/01 03/05 03/09 03/13 03/17 03/21 03/25 03/29 04/02 04/06 04/10 04/14 04/18 04/22 04/26 04/30 05/04 Date
- 14. 2012 Twitter collection Alexander Twitter vs. Google Hanna Research Agenda 1.0 Current Project Case Study 0.8 Future Approaches 0.6 factor(Keyword) trayvon Count zimmerman Gzimmerman Gtrayvon 0.4 0.2 0.0 03/01 03/05 03/09 03/13 03/17 03/21 03/25 03/29 04/02 04/06 04/10 04/14 04/18 04/22 04/26 04/30 05/04 Date
- 15. 2012 Twitter collection Alexander Setting the agenda Hanna Mentions of Trayvon Research Agenda Current Project Case Study 0.05 Future Approaches 0.04 factor(Level) 0.03 1 Ratio 2 3 0.02 0.01 03/01 03/05 03/09 03/13 03/17 03/21 03/25 03/29 04/02 04/06 04/10 04/14 04/18 04/22 04/26 04/30 05/04 Date
- 16. 2012 Twitter collection Alexander Setting the agenda Hanna Mentions of Zimmerman Research Agenda Current Project 0.030 Case Study Future Approaches 0.025 0.020 factor(Level) 1 Ratio 2 3 0.015 0.010 0.005 03/01 03/05 03/09 03/13 03/17 03/21 03/25 03/29 04/02 04/06 04/10 04/14 04/18 04/22 04/26 04/30 05/04 Date
- 17. 2012 Twitter collection Alexander Setting the agenda Hanna Research Agenda Current Project Case Study • No noticable difference Future Approaches between mentions of Trayvon in elites vs. followers • However, followers seem to catch on to Zimmerman quicker
- 18. 2012 Twitter collection Alexander Future Work Hanna Research Agenda Current Project Case Study Future • Incorporating network structure Approaches • Follower/friend networks • User mention networks • Retweet patterns • Computer-aided content analysis • Machine learning (supervised and unsupervised)
- 19. 2012 Twitter collection Alexander Future Work Hanna Research Agenda Current Project Case Study Future Approaches Thanks! ahanna@ssc.wisc.edu @alexhanna