Zerozero88 Twitter URL Item Recommender

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Zerozero88 Twitter URL Item Recommender

  1. 1. +University of Palo Alto Research Center! ^MIT CSAIL! Minnesota! 8/23/10 CHI2010 ZeroZero88.com 1
  2. 2. •  Social Information Streams! 8/23/10 CHI2010 ZeroZero88.com 2
  3. 3. 8/23/10 CHI2010 ZeroZero88.com 3
  4. 4. Follower and Followee ! follows Follower Followees
  5. 5. 8/23/10 CHI2010 ZeroZero88.com 5
  6. 6. 8/23/10 CHI2010 ZeroZero88.com 6
  7. 7. 8/23/10 CHI2010 ZeroZero88.com 7
  8. 8. URL Sources Topic Relevance Scores User Topic Profiles Social Network Scores Local Social Network Recommendation Engine  Multiply scores  Rank URLs using multiplied scores  Recommend highest ranked URLs
  9. 9. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular 8/23/10 CHI2010 ZeroZero88.com 9
  10. 10. URL Sources Topic Relevance Scores User Topic Profiles Social Network Scores Local Social Network Recommendation Engine  Multiply scores  Rank URLs using multiplied scores  Recommend highest ranked URLs
  11. 11. 8/23/10 CHI2010 ZeroZero88.com 11
  12. 12. Component Possible Design Choices Topic Relevance Self-Topic Scores Followee-Topic None 8/23/10 CHI2010 ZeroZero88.com 12
  13. 13. URL Sources Topic Relevance Scores User Topic Profiles Social Network Scores Local Social Network Recommendation Engine  Multiply scores  Rank URLs using multiplied scores  Recommend highest ranked URLs
  14. 14. Component Possible Design Choices Social Network Social Voting Scores None 8/23/10 CHI2010 ZeroZero88.com 14
  15. 15. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular Topic Self-Topic Relevance Followee-Topic Recommendation Engine Scores None  Multiply scores Social Social Voting  Rank URLs using multiplied scores Network None  Recommend highest ranked URLs Scores 8/23/10 CHI2010 ZeroZero88.com 15
  16. 16. 8/23/10 CHI2010 ZeroZero88.com 16
  17. 17. 8/23/10 CHI2010 ZeroZero88.com 17
  18. 18. 8/23/10 CHI2010 ZeroZero88.com 18
  19. 19. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular Topic Relevance Self-Topic Scores Followee-Topic None Social Network Social Voting Scores None (beta=0.22, Z=1.78, p=.08) 8/23/10 CHI2010 ZeroZero88.com 19
  20. 20. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular Topic Relevance Self-Topic Scores Followee-Topic None Social Network Social Voting Scores None (beta=0.58, Z=4.95, p<.001) (beta=0.27, Z=2.48, p=.01) 8/23/10 CHI2010 ZeroZero88.com 20
  21. 21. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular Topic Relevance Self-Topic Scores Followee-Topic None Social Network Social Voting Scores None (beta=1.02, Z=6.53, p<.001) 8/23/10 CHI2010 ZeroZero88.com 21
  22. 22. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular Topic Relevance Self-Topic Scores Followee-Topic None Social Network Social Voting Scores None 8/23/10 CHI2010 ZeroZero88.com 22
  23. 23. 8/23/10 CHI2010 ZeroZero88.com 23
  24. 24. 8/23/10 CHI2010 ZeroZero88.com 24
  25. 25. 8/23/10 CHI2010 ZeroZero88.com 25
  26. 26. Algorithms Differ Not Only in Accuracy! !
  27. 27. Acknowledgements! •  ASC folks at PARC! •  All users of Zerozero88.com! •  My labmates at the University for helping me prepare the presentation! •  … and reach me at jilin@cs.umn.edu for questions!!

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