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MSM 2011 keynote

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MSM 2011 keynote

  1. 1. Sharing Location over Social Media Guanling Chen University of Massachusetts Lowell http://www.cs.uml.edu/~glchen glchen@cs.uml.edu
  2. 2. MSM 2011, Boston, MA 2
  3. 3. Dodgeball MSM 2011, Boston, MA 3
  4. 4. Brightkite, Gowalla MSM 2011, Boston, MA 4
  5. 5. Loopt, Google Latitude MSM 2011, Boston, MA 5
  6. 6. Foursquare MSM 2011, Boston, MA 6
  7. 7. Facebook Places MSM 2011, Boston, MA 7
  8. 8. Check-In MSM 2011, Boston, MA 8
  9. 9. Foursquare Check-Ins MSM 2011, Boston, MA 9
  10. 10. Why Check-In? MSM 2011, Boston, MA 10
  11. 11. MSM 2011, Boston, MA 11
  12. 12. MSM 2011, Boston, MA 12
  13. 13. MSM 2011, Boston, MA 13
  14. 14. MSM 2011, Boston, MA 14
  15. 15. Brightkite Study MSM 2011, Boston, MA 15
  16. 16. Data –  About two years Updates 4,460,161 –  Daily Friends List 168 days –  Users Profile 70,337 MSM 2011, Boston, MA 16
  17. 17. Characteristics Analysis of a Location-Based Social Network Nan Li and Guanling Chen International Symposium on Social Intelligence and Networking (SIN) Vancouver, Canada, August 2009. MSM 2011, Boston, MA 17
  18. 18. Tag Cloud MSM 2011, Boston, MA 18
  19. 19. Classification MSM 2011, Boston, MA 19
  20. 20. Proportion of Protected Updates (PoPU) Sharing Location in Online Social Networks Nan Li and Guanling Chen IEEE Networks Special Issue on Online Social Networks, 24:5, pages 20-25, September-October 2010. MSM 2011, Boston, MA 20
  21. 21. Gender MSM 2011, Boston, MA 21
  22. 22. Age MSM 2011, Boston, MA 22
  23. 23. # visited places MSM 2011, Boston, MA 23
  24. 24. Friends MSM 2011, Boston, MA 24
  25. 25. Influence MSM 2011, Boston, MA 25
  26. 26. Privacy Design MSM 2011, Boston, MA 26
  27. 27. Control & Feedback Design for Privacy in Ubiquitous Computing Environments. Victoria Bellotti and Abigail Sellen. ECSCW 1993. MSM 2011, Boston, MA 27
  28. 28. Capture MSM 2011, Boston, MA 28
  29. 29. MSM 2011, Boston, MA 29
  30. 30. Construction MSM 2011, Boston, MA 30
  31. 31. Accessibility MSM 2011, Boston, MA 31
  32. 32. Purposes Analyzing Privacy Designs of Mobile Social Networking Applications Guanling Chen and Faruq Rahman IEEE/IFIP International Symposium on Trust, Security and Privacy for Pervasive Applications (TSP). Shanghai, China, December, 2008. MSM 2011, Boston, MA 32
  33. 33. UI Usability A Toolkit for Usability Testing of Mobile Applications Xiaoxiao Ma, Bo Yan, Guanling Chen, Chunhui Zhang, Ke Huang, and Jill Drury The 3rd International Conference on Mobile Computing, Applications, and Services (MobiCase) Los Angeles, CA, October 2011. MSM 2011, Boston, MA 33
  34. 34. Public location disclosure control Business location Cross boundary disclosure control sharing control MSM 2011, Boston, MA 34
  35. 35. User can control whether to share this Check-in with friends inline User can control whether to share this Check-in to Facebook or Twitter inline MSM 2011, Boston, MA 35
  36. 36. Policy MSM 2011, Boston, MA 36
  37. 37. MSM 2011, Boston, MA 37
  38. 38. Mobile Usability Testing MSM 2011, Boston, MA 38
  39. 39. Android UI Framework Dialog Button Widget (View Class) AdapterView (ViewGroup) Menu MSM 2011, Boston, MA 39
  40. 40. Recorded Events Recorded  Android  UI  Events  are  summarized  in   the  following  table,  classified  by  their  adhering   window   Unhandled Area MSM 2011, Boston, MA 40
  41. 41. State Machine Model Expert  State  Machine:   Expert  States  and  Transi3ons:   MSM 2011, Boston, MA 41
  42. 42. Traffic Flow Chart User  Traffic  Flow  Chart:   Incoming  flow   Outgoing  flow   Flow  to  Mistake   States   Backtracking   flow   Mistake  States  and  Transi3ons:   MSM 2011, Boston, MA 42
  43. 43. Reported Metrics Signs  for  poten3al  usability  problems:   -­‐ Too  many  backtracking   -­‐ Par0cipants  cannot  complete  one  step   -­‐ Low  correct  flow  ra0o   MSM 2011, Boston, MA 43
  44. 44. Evaluation Usability  Problems  idenFfied  by  Event  Logging  Tool:   *  Numbers  in  parenthesis  are  problems  idenFfied  by  Laboratory-­‐ based  Usability  tesFng  method:   -­‐  Good  at  iden3fying  cri3cal  (major  and  catastrophe)   usability  problems.   -­‐  Not  good  at  iden3fying  cosme3c  usability  problems.   MSM 2011, Boston, MA 44
  45. 45. Q&A http://www.cs.uml.edu/~glchen/ MSM 2011, Boston, MA 45

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