Edits and Reverts - Wikimania 2010

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Edits and Reverts - Wikimania 2010

  1. 1. EDIT & REVERT TRENDS Erik Zachte Wikimania Data Analyst ,Wikimedia Foundation July 2010 - Gdansk
  2. 2. +/- 800 x
  3. 3. http://stats.wikimedia.org/EN/PlotsPngEditHistoryTop.htm
  4. 4. Reverts
  5. 5. How to detect reverts  Comments rv, rvv, vandal, restored, undone, ..(Eng Wp)  Checksums (MD5)  654af3678745236583fc2433g5daaf32
  6. 6. Calculate MD5 checksum for each revision 15A3B... C324B.. 15A3B... 9980A... 15A3B... 67780... 15A3B... 77789... 15A3B...
  7. 7. Calculate MD5 checksum for each revision 15A3B... C324B.. 15A3B... 9980A... 15A3B... 67780... 15A3B... 77789... 15A3B...
  8. 8. How to detect reverts  Comments Language dependent rv, rvv, vandal, restored, undone, .. More false positives e.g. “not vandalism, see …..”  MD5 checksums Language independent Few false positives some status pages
  9. 9. English Wikipedia Rankings dump January 2010
  10. 10. English Wikipedia Rankings dump January 2010
  11. 11. Monthly reverts on WP:EN „George W. Bush‟
  12. 12. Monthly reverts Reverted editors Reverting editors
  13. 13. Breakdown of reverts on largest Wikipedias
  14. 14. Almost no MD5 detectable reverts on Japanese Wikipedia
  15. 15. Strong seasonal pattern for anon reverts
  16. 16. Flagged Revisions on German Wikipedia
  17. 17. Flagged Revisions / Pending Changes • Is it effective? • Is it destructive? • On what scale is it being used?
  18. 18. Flagged revisions / Pending Changes  Is it effective? Does it shield bad contributions from the general public? Does it discourage bad contributions ? Are good contributions released timely to general public?  Is it destructive? Does it break or discourage collaborative processes?  On what scale is it being used? (+ trend) To how many articles does this protection apply Can the community absorb the amount of work ?
  19. 19. Flagged Revisions introduced May 6, 2008 on German Wikipedia
  20. 20. Flagged Revisions
  21. 21. Flagged Revisions
  22. 22. Revert ratio climbs Flagged Revisions
  23. 23. Revert ratio climbs Flagged Revisions Flagged Revisions Less anon edits Revert volume stable
  24. 24. Flagged Revisions on German Wikipedia Edit-Revert charts suggest Does it effect registered editors? No (like expected) Does it discourage vandals? No Does it discourage good anon editors? Seems not (no sudden trend changes)
  25. 25. Flagged Revisions / Pending Changes on all Wikipedias Follow up with same data files Does it shield bad content from public? Are good contributions released timely?
  26. 26. Questions ?
  27. 27. Images from commons:  http://commons.wikimedia.org/wiki/File:Bundesarchiv_Bild_183-27924-0001,_MTS_Magdeburg- S%C3%BCdwest,_Setzen_einer_Dorfzeitung.jpg  http://commons.wikimedia.org/wiki/File:Konrad_Plautz,_Schiedsrichter_%284%29.jpg  http://commons.wikimedia.org/wiki/File:Canberra_-_Maltese_Flags.jpg  http://commons.wikimedia.org/wiki/File:Wikimania_2009_-_Questions.jpg
  28. 28. Slides not shown in live presentation follow
  29. 29. Wikistats: Articles ranked by total edit count
  30. 30. Wikistats: Articles ranked by total edit count
  31. 31. Breakdowns

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