Design and Prototyping of a Social Media Observatory

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This document discusses the design and prototyping of a social media observatory to collect and analyze large-scale social media data from Twitter. Some key points: - It collects a random sample of Twitter data using the Streaming API dating back to August 2010, totaling over 5TB of compressed data related to US politics, social movements, and news. - It aims to provide reliable, reproducible, and openly accessible social media data and analytics for non-profit uses through standardized data storage, reference models, and APIs/visualizations. - Legal compliance with Twitter's terms of service is considered, limiting access to tweet text and derived aggregate data rather than individual tweets. The goal is to enable large-scale

Design and Prototyping of
a Social Media Observatory
Karissa McKelvey and Filippo Menczer
Center for Complex Networks and Systems Research
School of Informatics and Computing
Indiana University, Bloomington
1

Can we use social media as
laboratories for social
science?
truthy.indiana.edu 2

Political Polarization on Twitter Michael Conover, Jacob Ratkiewicz, Bruno Gonçalves, Alessandro Flammini
& Filippo Menczer International Conference on Weblogs and Social Media 2011
truthy.indiana.edu 3

Design and Prototyping
truthy.indiana.edu 7

Social Media
truthy.indiana.edu 8
streaming
sensitive
very large
structured
multiple sources

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 9

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 10

Reliability
• Spam and misinformation
truthy.indiana.edu 11

Reliability
• Spam and misinformation
• Cleansing and tagging by social, algorithmic,
or other means
truthy.indiana.edu 13

Reliability
• Spam and misinformation
• Cleansing and tagging by social, algorithmic,
or other means
• Sampling bias
truthy.indiana.edu 15

Data Collection
• Twitter Streaming API, random sample
• August, 2010 – present
• 5TB Compressed
• Real-time access to data from last 9 months
related to 3 themes: US Politics, Social
Movements, News
truthy.indiana.edu 16

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 17

Reproducibility
• Standard ontology for the storage, reference,
and transfer of these datasets between users.
truthy.indiana.edu 18

Model
• Events
– Post on a social media site
• Users
– Actors in the post
– Sender, receiver, forwarder, etc
• Meme
– Discernable unit of information transfer
– Eg, hashtag, URL, user, phrase…
truthy.indiana.edu 19

Meme Diffusion Networks
truthy.indiana.edu 20
Retweet (forward) Mention (conversation)

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 21

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 23

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 25

Open Access
• A public and free -- or low-cost -- social
observatory enables access to large-scale
social media data analytics for non-profit
endeavors.
truthy.indiana.edu 26

API & Website
• Filterable and
searchable interface
to find memes of
interest
• Endpoints for users
to access data
programmatically
• Visualizations
truthy.indiana.edu/apidoc
truthy.indiana.edu 27

Design Considerations
Reliability
Reproducibility
Topic Filtering
Visualization
Open Access
Legal Compliance
truthy.indiana.edu 28

Legal Compliance
• Terms of Service
– Tweet text
– Derived data
truthy.indiana.edu 29

truthy.indiana.edu
truthy.indiana.edu 30

Thanks!
Papers at cnets.indiana.edu/groups/nan/truthy
S
andro Flammini
Bruno Conçalves
J
acob Ratkiewicz
LilianWeng
Mike Conover
J
ohan Bollen
KarissaMcKelvey
Przemek Grabowicz
Mark Meiss
AlexVespignani
Alex Rudnick
LucaAiello
Fil Menczer
Mohsen J
afari-Asbagh
Onur Varol
Emilio Ferrara
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Design and Prototyping of a Social Media Observatory

1. Design and Prototyping of a Social Media Observatory Karissa McKelvey and Filippo Menczer Center for Complex Networks and Systems Research School of Informatics and Computing Indiana University, Bloomington 1

2. Can we use social media as laboratories for social science? truthy.indiana.edu 2

3. Political Polarization on Twitter Michael Conover, Jacob Ratkiewicz, Bruno Gonçalves, Alessandro Flammini & Filippo Menczer International Conference on Weblogs and Social Media 2011 truthy.indiana.edu 3

4. Data “mine” ing truthy.indiana.edu 4

5. Data “ours” ing truthy.indiana.edu 5

6. truthy.indiana.edu truthy.indiana.edu 6

7. Design and Prototyping truthy.indiana.edu 7

8. Social Media truthy.indiana.edu 8 streaming sensitive very large structured multiple sources

9. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 9

10. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 10

11. Reliability • Spam and misinformation truthy.indiana.edu 11

12. celebrities spam astroturf politics 12

13. Reliability • Spam and misinformation • Cleansing and tagging by social, algorithmic, or other means truthy.indiana.edu 13

14. truthy.indiana.edu 14

15. Reliability • Spam and misinformation • Cleansing and tagging by social, algorithmic, or other means • Sampling bias truthy.indiana.edu 15

16. Data Collection • Twitter Streaming API, random sample • August, 2010 – present • 5TB Compressed • Real-time access to data from last 9 months related to 3 themes: US Politics, Social Movements, News truthy.indiana.edu 16

17. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 17

18. Reproducibility • Standard ontology for the storage, reference, and transfer of these datasets between users. truthy.indiana.edu 18

19. Model • Events – Post on a social media site • Users – Actors in the post – Sender, receiver, forwarder, etc • Meme – Discernable unit of information transfer – Eg, hashtag, URL, user, phrase… truthy.indiana.edu 19

20. Meme Diffusion Networks truthy.indiana.edu 20 Retweet (forward) Mention (conversation)

21. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 21

22. truthy.indiana.edu 22

23. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 23

24. truthy.indiana.edu 24

25. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 25

26. Open Access • A public and free -- or low-cost -- social observatory enables access to large-scale social media data analytics for non-profit endeavors. truthy.indiana.edu 26

27. API & Website • Filterable and searchable interface to find memes of interest • Endpoints for users to access data programmatically • Visualizations truthy.indiana.edu/apidoc truthy.indiana.edu 27

28. Design Considerations Reliability Reproducibility Topic Filtering Visualization Open Access Legal Compliance truthy.indiana.edu 28

29. Legal Compliance • Terms of Service – Tweet text – Derived data truthy.indiana.edu 29

30. truthy.indiana.edu truthy.indiana.edu 30

31. Thanks! Papers at cnets.indiana.edu/groups/nan/truthy S andro Flammini Bruno Conçalves J acob Ratkiewicz LilianWeng Mike Conover J ohan Bollen KarissaMcKelvey Przemek Grabowicz Mark Meiss AlexVespignani Alex Rudnick LucaAiello Fil Menczer Mohsen J afari-Asbagh Onur Varol Emilio Ferrara Wednesday, September 26, 12

Editor's Notes

Are there well-defined communication behaviors that characterize the activities of influential actors? What is the role of bridging users in facilitating information transfer between ideologically opposed communities? Who are the opinion leaders, and how do they engage in frame-making and agenda-setting?
The polarization of political communities
Connect the users that communicate

Design and Prototyping of a Social Media Observatory

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