Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
@qutdmrc
ICA Conference, Prague, 26 May 2018
Axel Bruns | @snurb_dot_info
Following, Mentioning, Sharing:
A Search for Fil...
@qutdmrc
Working Definitions
● An echo chamber comes into being where a group of participants choose to
preferentially con...
@qutdmrc
Reviewing the Evidence: Twitter in Australia
● A ‘big data’ approach, for one platform:
● Twitter in Australia:
●...
Clusters in the Australian Twittersphere
3.7m known Australian accounts
Network of follower connections
Filter: degree ≥10...
3.7m known Australian accounts
Network of follower connections
Filter: degree ≥1000 – 255k nodes (6.4%), 61m edges
Labels:...
@qutdmrc
Assessing Network Structures
● How exclusive are the groups?
● Strongly inwardly focussed = echo chambers / filte...
E-I Indices: follower relationships (in Feb. 2016)
Internal External
Teens
Gourmets
Porn
Netizens
Celebrities
Generic
Misc...
@qutdmrc
E-I Indices: @mentions and retweets (Q1/2017)
Teens
Gamers
Horses
Porn
Commentators
Journalists
Politicians
Parti...
@qutdmrc
Echo Chambers? Filter Bubbles?
● Very limited evidence in the Australian Twittersphere:
● E-I Index values largel...
@qutdmrc
ICA Conference, Prague, 26 May 2018
Axel Bruns | @snurb_dot_info
@socialmediaQUT – http://socialmedia.qut.edu.au/...
Upcoming SlideShare
Loading in …5
×

Following, Mentioning, Sharing: A Search for Filter Bubbles in the Australian Twittersphere

Paper presented at the International Communication Association conference, Prague, 26 May 2018.

  • Be the first to comment

Following, Mentioning, Sharing: A Search for Filter Bubbles in the Australian Twittersphere

  1. 1. @qutdmrc ICA Conference, Prague, 26 May 2018 Axel Bruns | @snurb_dot_info Following, Mentioning, Sharing: A Search for Filter Bubbles in the Australian Twittersphere
  2. 2. @qutdmrc Working Definitions ● An echo chamber comes into being where a group of participants choose to preferentially connect with each other, to the exclusion of outsiders. The more fully formed this network is (that is, the more connections are created within the group, and the more connections with outsiders are severed), the more isolated from the introduction of outside views is the group, while the views of its members are able to circulate widely within it. ● A filter bubble emerges when a group of participants, independent of the underlying network structures of their connections with others, choose to preferentially communicate with each other, to the exclusion of outsiders. The more consistently they adhere to such practices, the more likely it is that participants’ own views and information will circulate amongst group members, rather than information introduced from the outside. ● Note that these patterns are determined by a mix of both algorithmic curation and shaping and personal choice.
  3. 3. @qutdmrc Reviewing the Evidence: Twitter in Australia ● A ‘big data’ approach, for one platform: ● Twitter in Australia: ● ~3.7m accounts (as of Feb. 2016), ~167m follower connections ● Filtered to accounts with 1000+ global follower connections: ● 255k accounts, 61m connections ● Captured all (public) tweets during Q1/2017: ● 55m tweets Bruns, A., Moon, B., Münch, F., & Sadkowsky, T. (2017). The Australian Twittersphere in 2016: Mapping the Follower/Followee Network. Social Media + Society, 3(4), 1–15. https://doi.org/10.1177/2056305117748162 ● Questions: ● Echo chamber tendencies in connection networks between these accounts? ● Follower / followee relationships ● Filter bubble tendencies in communicative engagement between these accounts? ● @mentions, retweets, all tweets
  4. 4. Clusters in the Australian Twittersphere 3.7m known Australian accounts Network of follower connections Filter: degree ≥1000 – 255k nodes (6.4%), 61m edges Position: Force Atlas 2 algorithm in Gephi Colour: Louvain Community Detection algorithm (resolution 0.25)
  5. 5. 3.7m known Australian accounts Network of follower connections Filter: degree ≥1000 – 255k nodes (6.4%), 61m edges Labels: qualitative examination of lead accounts in each cluster Clusters in the Australian Twittersphere Teen Culture Aspirational Sports Netizens Arts & Culture Politics Television Fashion Popular Music Food & Drinks Agriculture Activism Porn Education Cycling News & Generic Hard Right Progressive South Australia Celebrities
  6. 6. @qutdmrc Assessing Network Structures ● How exclusive are the groups? ● Strongly inwardly focussed = echo chambers / filter bubbles ● Strongly outwardly focussed = network bridges / information hubs ● Structural measure: Krackhardt E-I Index ● Difference of external and internal links as proportion of total: 𝐸−𝐼 𝐼𝑛𝑑𝑒𝑥 = # 𝐸𝑥𝑡𝑒𝑟𝑛𝑎𝑙 𝐿𝑖𝑛𝑘𝑠 − # 𝐼𝑛𝑡𝑒𝑟𝑛𝑎𝑙 𝐿𝑖𝑛𝑘𝑠 # 𝐸𝑥𝑡𝑒𝑟𝑛𝑎𝑙 𝐿𝑖𝑛𝑘𝑠 + # 𝐼𝑛𝑡𝑒𝑟𝑛𝑎𝑙 𝐿𝑖𝑛𝑘𝑠 ● Scale from +1 (100% external) to -1 (100% internal)
  7. 7. E-I Indices: follower relationships (in Feb. 2016) Internal External Teens Gourmets Porn Netizens Celebrities Generic Misc Travel
  8. 8. @qutdmrc E-I Indices: @mentions and retweets (Q1/2017) Teens Gamers Horses Porn Commentators Journalists Politicians Partisan Politics Horses Internal External LGBTIQ Gamers Agriculture Sharing from within Sharing from outside
  9. 9. @qutdmrc Echo Chambers? Filter Bubbles? ● Very limited evidence in the Australian Twittersphere: ● E-I Index values largely positive (connections) or balanced (engagement) ● No sign of highly exclusionary patterns, except for outliers ● Echo chambers: ● Clear clustering tendencies, but disconnect only for specialist clusters (teens, gourmets, porn) ● Most E-I Indices > 0: more external than internal connections ● Filter bubbles: ● Balanced or moderately inward engagement; strongly inward only for specialist groups ● Retweeting generally more externally-focussed than @mentions: seeking information from outside ● Partisan political clusters diverge: pushing internal views to outside through retweets ● Limitations: ● Analysis only for accounts with 1000+ global follower/followee connections – need to repeat for full network ● Engagement patterns during Q1/2017 may be affected by key events (e.g. Trump administration)
  10. 10. @qutdmrc ICA Conference, Prague, 26 May 2018 Axel Bruns | @snurb_dot_info @socialmediaQUT – http://socialmedia.qut.edu.au/ @qutdmrc – https://www.qut.edu.au/research/dmrc This research is supported by the ARC Future Fellowship project “Understanding Intermedia Information Flows in the Australian Online Public Sphere”, the ARC Discovery project “Journalism beyond the Crisis: Emerging Forms, Practices, and Uses”, and the ARC LIEF project “TrISMA: Tracking Infrastructure for Social Media Analysis.”

×