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Zerozero88 Twitter URL Item Recommender

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Ed Chi
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+University of Palo Alto Research Center! ^MIT CSAIL! Minnesota! 8/23/10 CHI2010 ZeroZero88.com 1
•  Social Information Streams! 8/23/10 CHI2010 ZeroZero88.com 2
8/23/10 CHI2010 ZeroZero88.com 3
Follower and Followee ! follows Follower Followees
8/23/10 CHI2010 ZeroZero88.com 5
8/23/10 CHI2010 ZeroZero88.com 6
8/23/10 CHI2010 ZeroZero88.com 7
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
Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular 8/23/10 CHI2010 ZeroZero88.com 9
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
8/23/10 CHI2010 ZeroZero88.com 11
Component Possible Design Choices Topic Relevance Self-Topic Scores Followee-Topic None 8/23/10 CHI2010 ZeroZero88.com 12
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
Component Possible Design Choices Social Network Social Voting Scores None 8/23/10 CHI2010 ZeroZero88.com 14
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
8/23/10 CHI2010 ZeroZero88.com 16
8/23/10 CHI2010 ZeroZero88.com 17
8/23/10 CHI2010 ZeroZero88.com 18
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
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
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
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
8/23/10 CHI2010 ZeroZero88.com 23
8/23/10 CHI2010 ZeroZero88.com 24
8/23/10 CHI2010 ZeroZero88.com 25
Algorithms Differ Not Only in Accuracy! !
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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Zerozero88 Twitter URL Item Recommender

  • 1. +University of Palo Alto Research Center! ^MIT CSAIL! Minnesota! 8/23/10 CHI2010 ZeroZero88.com 1
  • 2. •  Social Information Streams! 8/23/10 CHI2010 ZeroZero88.com 2
  • 3. 8/23/10 CHI2010 ZeroZero88.com 3
  • 4. Follower and Followee ! follows Follower Followees
  • 5. 8/23/10 CHI2010 ZeroZero88.com 5
  • 6. 8/23/10 CHI2010 ZeroZero88.com 6
  • 7. 8/23/10 CHI2010 ZeroZero88.com 7
  • 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. Component Possible Design Choices URL Sources FoF (followee-of-followees) Popular 8/23/10 CHI2010 ZeroZero88.com 9
  • 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. 8/23/10 CHI2010 ZeroZero88.com 11
  • 12. Component Possible Design Choices Topic Relevance Self-Topic Scores Followee-Topic None 8/23/10 CHI2010 ZeroZero88.com 12
  • 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. Component Possible Design Choices Social Network Social Voting Scores None 8/23/10 CHI2010 ZeroZero88.com 14
  • 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. 8/23/10 CHI2010 ZeroZero88.com 16
  • 17. 8/23/10 CHI2010 ZeroZero88.com 17
  • 18. 8/23/10 CHI2010 ZeroZero88.com 18
  • 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. 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. 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. 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. 8/23/10 CHI2010 ZeroZero88.com 23
  • 24. 8/23/10 CHI2010 ZeroZero88.com 24
  • 25. 8/23/10 CHI2010 ZeroZero88.com 25
  • 26. Algorithms Differ Not Only in Accuracy! !
  • 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!!