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Studying Community Dynamics cs 294h – 9 feb 2010

Studying Community Dynamics cs 294h – 9 feb 2010. USENET [Smith, Fiore]. Usenet Visualization (Viégas & Smith). Show correspondence patterns in text forums Initiate vs. reply; size and duration of discussion. Newsgroup crowds / Authorlines. History Flow.

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Studying Community Dynamics cs 294h – 9 feb 2010

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  1. Studying Community Dynamicscs294h – 9 feb 2010

  2. USENET [Smith, Fiore]

  3. Usenet Visualization (Viégas & Smith) Show correspondence patterns in text forums Initiate vs. reply; size and duration of discussion

  4. Newsgroup crowds / Authorlines

  5. History Flow Wikipedia History Flow [Viégas et al]

  6. Group Lens GroupLens / MovieLens [Univ. Minnesota]

  7. GWAP Games with a Purpose [von Ahn et al]

  8. Many-Eyes / sense.us Many Eyes [IBM]

  9. Mankoff Green FB StepGreen [Mankoff et al]

  10. research

  11. observe environment augment environment create new environment existing system new system

  12. observer observation participant-observation participant self-experimentation

  13. armchair philosopher field of dreams observer meddling researchers navel gazing eat your own dog food participant existing system new system

  14. observer participant existing system new system

  15. Research Approaches Studying characteristics of online communities • Collect usage data; Observe, interview users Intervene in existing systems • e.g., Facebook apps • Controlled experimentation Introduce + study new systems • Requires massive investment (?) Mining social media • Recommendation and matching algorithms, …

  16. Research Questions How and why do people join communities? How is collective action organized? Why do people contribute? (Incentives) Issues of quality control, privacy, trust, … What are the interactions between social structure and system design? How do these findings generalize and inform the design of new socio-technical systems?

  17. Example: World of warcraft

  18. World of Warcraft World of Warcraft [Yee, Ducheneaut et al]

  19. Example: COORDINATION IN WIKIPEDIA

  20. History Flow Wikipedia History Flow [Viégas et al]

  21. “Emergent” Order and Coordination

  22. “Talk” Pages on Wikipedia Viégas et al. 2007

  23. Coordination on Wikipedia “… [we] note that administrative and coordinating elements seem to be growing at a faster pace than the bulk of articles in the encyclopedia [Wikipedia]” Viégas et al. 2007

  24. Wiki Dashboard Wiki Dashboard [Suh et al]

  25. Example: Collaborative Tagging

  26. Collaborative Tagging & Rating

  27. Forms of Tagging (Golder ‘05) • Identifying what (or who) it is about. (topics) • Identifying what it is. (“blog”, “book”, “video”) • Identifying who owns it. • Refining categories. • Identifying qualities or characteristics. (“funny”) • Self reference.(“mystuff”) • Task organizing. (“toread”)

  28. Personal Tag Usage

  29. Inferences from Tag Order?

  30. Stability of Tag Use

  31. [Chi & Mytkowicz]

  32. [Budiu, Pirolli, & Hong]

  33. Example:Social Network Analysis

  34. DEMO

  35. Who is my best friend?

  36. The Strength of Weak Ties “Interpersonal Ties” – Strong, Weak, or Absent Tie strength modeled as a combination of time, emotional intensity, intimacy, and services. Weak ties shown to: • Provide the majority of the network structure • Transmit novel information among groups [Granovetter 73, 83]

  37. Eliciting Tie Strength [Gilbert ‘09]

  38. Model Prediction

  39. How might you apply these results?

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