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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
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7.
8/23/10
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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.
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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!!
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