Min Hu Rebecca Yu Nayeoung Kim 06/02/09 SI 508 Networks
<ul><li>Three Questions </li></ul><ul><ul><li>How do numbers of videos uploaded by users affect the number of subscriber e...
<ul><li>Picking 10 categories on Youtube </li></ul><ul><ul><li>Autos & Vehicles, Comedy, Entertainment, Film & Animation, ...
<ul><li>Correlation Coefficient: 0.312451 </li></ul><ul><li>But </li></ul>06/02/09 SI 508 Networks
<ul><li>More videos, increasing number of users with a higher number of subscribers </li></ul>06/02/09 SI 508 Networks
<ul><li>Correlation Coefficient: 0.550248 </li></ul>06/02/09 SI 508 Networks
<ul><li>More subscribers, increasing number of friends </li></ul>06/02/09 SI 508 Networks
<ul><li>Many Videos Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Most Videos are Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Most Subscribers Subscribing to Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Most Subscribers Subscribing to Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Most People are Friends to Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Most Videos Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
<ul><li>Real network has  </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower...
<ul><li>Low CC </li></ul><ul><li>Avg. shortest path is around 3.5-5.5(exclude unreachable pairs) </li></ul>06/02/09 SI 508...
<ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower ...
# of Vertices: 658
<ul><li>Lower CC </li></ul><ul><li>Avg. shortest path is around 3.2-4.5(exclude unreachable pairs) </li></ul>
<ul><li>Real network has  </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower...
# of Vertices: 723
# of Vertices: 4165
<ul><li>The Clustering Coefficient of the network of member's friends in music group increase from 0.07 to 0.76 </li></ul>
<ul><li>Low CC </li></ul><ul><li>Avg. shortest path is around 3.5-5.5(exclude unreachable pairs) </li></ul>06/02/09 SI 508...
<ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower ...
# of Vertices: 658
<ul><li>Lower CC </li></ul><ul><li>Avg. shortest path is around 3.2-4.5(exclude unreachable pairs) </li></ul>
<ul><li>Real network has  </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower...
# of Vertices: 723
# of Vertices: 4165
<ul><li>The Clustering Coefficient of friend network for music group increase from 0.07 to 0.76 </li></ul>
<ul><li>The most popular categories overall are Entertainment and Music  </li></ul><ul><li>If exclude these two categories...
06/02/09 SI 508 Networks
Pets & Animals 41.4% News & Politics 68.7% People & Blogs 12.3% Travel & Events 12.2% Sports 67.2% Comedy 67.2% Film & Ani...
<ul><li>Identify how people are linked through videos </li></ul><ul><li>Find friends’ friend </li></ul><ul><li>Run more gr...
06/02/09 SI 508 Networks
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  1. 1. Min Hu Rebecca Yu Nayeoung Kim 06/02/09 SI 508 Networks
  2. 2. <ul><li>Three Questions </li></ul><ul><ul><li>How do numbers of videos uploaded by users affect the number of subscriber each user has? </li></ul></ul><ul><ul><li>Do numbers of videos uploaded by users follow power law? </li></ul></ul><ul><ul><li>Do people have the same interests as others if they are in the same community? </li></ul></ul>06/02/09 SI 508 Networks
  3. 3. <ul><li>Picking 10 categories on Youtube </li></ul><ul><ul><li>Autos & Vehicles, Comedy, Entertainment, Film & Animation, People & Blogs, Music, News & Politics, Pets & Animals, Sports, and Travel & Events </li></ul></ul><ul><li>Look at one community from each Category. (Based on geography location, number of members, common interest, etc) </li></ul><ul><ul><li>Number of Videos a User Uploaded </li></ul></ul><ul><ul><li>Number of Subscribers a User Have </li></ul></ul><ul><ul><li>Users to Subscriber Network </li></ul></ul><ul><ul><li>Number of Friends a User Have </li></ul></ul><ul><ul><li>User to Friend Network </li></ul></ul><ul><ul><li>Individual and Overall Interest for Videos in Different Categories. </li></ul></ul>06/02/09 SI 508 Networks
  4. 4. <ul><li>Correlation Coefficient: 0.312451 </li></ul><ul><li>But </li></ul>06/02/09 SI 508 Networks
  5. 5. <ul><li>More videos, increasing number of users with a higher number of subscribers </li></ul>06/02/09 SI 508 Networks
  6. 6. <ul><li>Correlation Coefficient: 0.550248 </li></ul>06/02/09 SI 508 Networks
  7. 7. <ul><li>More subscribers, increasing number of friends </li></ul>06/02/09 SI 508 Networks
  8. 8. <ul><li>Many Videos Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
  9. 9. <ul><li>Most Videos are Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
  10. 10. <ul><li>Most Subscribers Subscribing to Few Users </li></ul>06/02/09 SI 508 Networks
  11. 11. <ul><li>Most Subscribers Subscribing to Few Users </li></ul>06/02/09 SI 508 Networks
  12. 12. <ul><li>Most People are Friends to Few Users </li></ul>06/02/09 SI 508 Networks
  13. 13. <ul><li>Most Videos Uploaded by Few Users </li></ul>06/02/09 SI 508 Networks
  14. 14. <ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower avg. shortest path </li></ul>
  15. 15. <ul><li>Low CC </li></ul><ul><li>Avg. shortest path is around 3.5-5.5(exclude unreachable pairs) </li></ul>06/02/09 SI 508 Networks
  16. 16. <ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower avg. shortest path </li></ul>
  17. 17. # of Vertices: 658
  18. 18. <ul><li>Lower CC </li></ul><ul><li>Avg. shortest path is around 3.2-4.5(exclude unreachable pairs) </li></ul>
  19. 19. <ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower avg. shortest path </li></ul>
  20. 20. # of Vertices: 723
  21. 21. # of Vertices: 4165
  22. 22. <ul><li>The Clustering Coefficient of the network of member's friends in music group increase from 0.07 to 0.76 </li></ul>
  23. 23. <ul><li>Low CC </li></ul><ul><li>Avg. shortest path is around 3.5-5.5(exclude unreachable pairs) </li></ul>06/02/09 SI 508 Networks
  24. 24. <ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower avg. shortest path </li></ul>
  25. 25. # of Vertices: 658
  26. 26. <ul><li>Lower CC </li></ul><ul><li>Avg. shortest path is around 3.2-4.5(exclude unreachable pairs) </li></ul>
  27. 27. <ul><li>Real network has </li></ul><ul><li>Higher CC </li></ul><ul><li>Higher centrality measures </li></ul><ul><li>Lower avg. shortest path </li></ul>
  28. 28. # of Vertices: 723
  29. 29. # of Vertices: 4165
  30. 30. <ul><li>The Clustering Coefficient of friend network for music group increase from 0.07 to 0.76 </li></ul>
  31. 31. <ul><li>The most popular categories overall are Entertainment and Music </li></ul><ul><li>If exclude these two categories, users are most interested in the category of their own community </li></ul>06/02/09 SI 508 Networks
  32. 32. 06/02/09 SI 508 Networks
  33. 33. Pets & Animals 41.4% News & Politics 68.7% People & Blogs 12.3% Travel & Events 12.2% Sports 67.2% Comedy 67.2% Film & Animation 85.5% Auto & Vehicles 85.5% Music 82.7% Entertainment 61.6
  34. 34. <ul><li>Identify how people are linked through videos </li></ul><ul><li>Find friends’ friend </li></ul><ul><li>Run more groups on people’s interest and visualize how people’s interest are connected </li></ul>06/02/09 SI 508 Networks
  35. 35. 06/02/09 SI 508 Networks
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