zerozero88 twitter url item recommender
Post on 05-Dec-2014
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+University of Minnesota!
Palo Alto Research Center! ^MIT CSAIL!
8/23/10 1 CHI2010 ZeroZero88.com
8/23/10 2 CHI2010 ZeroZero88.com
• Social Information Streams!
3 8/23/10 CHI2010 ZeroZero88.com
Follower and Followee!
follows
Follower Followees
8/23/10 5 CHI2010 ZeroZero88.com
8/23/10 6 CHI2010 ZeroZero88.com
8/23/10 7 CHI2010 ZeroZero88.com
URL Sources
Topic Relevance Scores
Recommendation Engine
Multiply scores Rank URLs using multiplied scores Recommend highest ranked URLs
Social Network Scores
User Topic Profiles
Local Social Network
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
8/23/10 9 CHI2010 ZeroZero88.com
URL Sources
Topic Relevance Scores
Recommendation Engine
Multiply scores Rank URLs using multiplied scores Recommend highest ranked URLs
Social Network Scores
User Topic Profiles
Local Social Network
8/23/10 11 CHI2010 ZeroZero88.com
Component Possible Design Choices
Topic Relevance Scores
Self-Topic Followee-Topic None
8/23/10 12 CHI2010 ZeroZero88.com
URL Sources
Topic Relevance Scores
Recommendation Engine
Multiply scores Rank URLs using multiplied scores Recommend highest ranked URLs
Social Network Scores
User Topic Profiles
Local Social Network
Component Possible Design Choices
Social Network Scores
Social Voting None
8/23/10 14 CHI2010 ZeroZero88.com
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
Topic Relevance Scores
Self-Topic Followee-Topic None
Social Network Scores
Social Voting None
8/23/10 15 CHI2010 ZeroZero88.com
Recommendation Engine
Multiply scores Rank URLs using multiplied scores Recommend highest ranked URLs
8/23/10 16 CHI2010 ZeroZero88.com
8/23/10 17 CHI2010 ZeroZero88.com
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8/23/10 19 CHI2010 ZeroZero88.com
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
Topic Relevance Scores
Self-Topic Followee-Topic None
Social Network Scores
Social Voting None
(beta=0.22, Z=1.78, p=.08)
8/23/10 20 CHI2010 ZeroZero88.com
(beta=0.58, Z=4.95, p<.001) (beta=0.27, Z=2.48, p=.01)
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
Topic Relevance Scores
Self-Topic Followee-Topic None
Social Network Scores
Social Voting None
8/23/10 21 CHI2010 ZeroZero88.com
(beta=1.02, Z=6.53, p<.001)
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
Topic Relevance Scores
Self-Topic Followee-Topic None
Social Network Scores
Social Voting None
8/23/10 22 CHI2010 ZeroZero88.com
Component Possible Design Choices
URL Sources FoF (followee-of-followees) Popular
Topic Relevance Scores
Self-Topic Followee-Topic None
Social Network Scores
Social Voting None
8/23/10 23 CHI2010 ZeroZero88.com
8/23/10 24 CHI2010 ZeroZero88.com
8/23/10 25 CHI2010 ZeroZero88.com
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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