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What is Twitter, a Social Network or a News Media?

What is Twitter, a Social Network or a News Media?. Haewoon Kwak , Changhyun Lee, Hosung Park, and Sue Moon Department of Computer Science, KAIST 19 th International World Wide Web Conference ( WWW 2010 ) July 30, 2010 Presented by In Seok An. Contents. Introduction

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What is Twitter, a Social Network or a News Media?

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  1. What is Twitter, a Social Network or a News Media? HaewoonKwak, Changhyun Lee, Hosung Park, and Sue Moon Department of Computer Science, KAIST 19th International World Wide Web Conference ( WWW 2010 ) July 30, 2010 Presented by In Seok An

  2. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  3. Introduction • Twitter is a microblogging service

  4. Introduction • Twitter is a microblogging service

  5. Introduction • Twitter is a microblogging service

  6. Introduction • In most Social Network “We are friends”

  7. introduction • In Twitter • Following on Twitter • Unlike most social networks, following on Twitter is not mutual. • Someone who thinks you’re interesting can follow you, and you don’t have to approve, or follow back “I follow you”

  8. Introduction • Being a follower on Twitter means that the user receives all the messages ( called tweets ) from those the user follows

  9. Introduction • Twitter as a new medium

  10. Introduction • Twitter as a new medium

  11. introduction • Why do people follow others? • Reflection of offline social relationship • Subscription to others’ messages • Following celebrities

  12. Introduction • Goal of this work • We analyze how drected relations of following set Twitter apart from existing OSNs • We see if Twitter has any characteristics of news media

  13. Introduction • Media [ mee-dee-uh ] • A pl. of medium • The means of communication, as radio and television, newspapers, and magazines, that reach or influence people widely • Definition of media ( Wikipedia ) • tools used to store and deliver information or data

  14. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  15. Twitter space crawl • Data collection ( 2009.6.1 ~ 2009.9.24 ) • 41.7 M user profiles • 1.47 following / followed relations • 4262 trending topics • 106M tweets mentioning trending topics • Removing spam tweets • Clean Tweets ( Fire fox add-on ) • Filters tweets from users who have been on twitter for less than a day when presenting Twitter search results to FireFox • Removes those tweets that contain three or more trending topics

  16. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  17. On Twitterers’ trail • A few users reach large audience directly • CCDF ( Complementary Cumulative Density Function )

  18. On Twitterers’ trail

  19. On Twitterers’ trail

  20. On Twitterers’ trail • Are those who have many followers active?

  21. On Twitterers’ trail • How we plotted

  22. On Twitterers’ trail • More followers, more tweets

  23. On Twitterers’ trail • Many followers without activity

  24. On Twitterers’ trail • Reciprocal interaction • Only 22.1% of user pairs follow each other • Much lower than • 68% on Flickr • 84% on Yahoo! 360 • 77% on Cyworld guestbook messages “I follow you” “I follow you”

  25. On Twitterers’ trail • Low reciprocity of following • Following is not similarly used as friend in OSNs • Not reflection of offline social relationships

  26. On Twitterers’ trail • Degree of separation • The 90th percentile distance is 4.8 • For 70.5% of node pairs, the path length is 4 or shorter • For 97.6% of node pairs, the path length is 6 or shorter

  27. On Twitterers’ trail • Homophily in terms of location only in reciprocal network • Twitter users who have reciprocal relations of fewer than 2,000 are likely to be geographically close

  28. On Twitterers’ trail • Homophily in terms of followers only in reciprocal network • Twitter user who have reciprocal relations of fewer than 2,000 are likely to have similar or higher popularity with their r-friends’ follower

  29. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  30. Ranking Twitter users • Twitter user rankings by followers

  31. Ranking Twitter users • Twitter user rankings by PageRank

  32. Ranking Twitter users • Twitter user rankings by the Retweets

  33. Ranking Twitter users • Comparison among Rankings

  34. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  35. Trending the Trends • On average 95% of topics each day are new in Google • On average 72% of topics are new in Twitter • RT, reply and mention are prevalent in Twitter unlike Google search

  36. Trending the Trends • Singleton • Tweet that has no reply or a retweet • Reply • Tweet that reply other tweet • Mention • A tweet addressing a specific user • Retweet • Refers to a common practice in Twitter to copy someone else’s tweet as one’s own

  37. Trending the Trends • Topics ranked by RT proportion ( # of users > 50,000 )

  38. Trending the Trends • User participation in Trending Topics • There exist core members generating many tweets over a long time period for that particular trending topic

  39. Trending the Trends • Active period of trends • Inactive : if there is no tweet on the topic for 24 hours • 73% topics have a single active period • 15% topics have 2 active periods • 5% topics have 3 active periods

  40. Trending the Trends • Majority of topics are headline

  41. Contents • Introduction • Twitter space crawl • On Twitterers’ trail • Ranking Twitter users • Trending the Trends • Impact of ReTweet • Conclusion • My Opinion

  42. Impact of ReTweet • Retweet is considered the feature that has made Twitter a new medium of information dissemination • What is more efficient for WOM ( Word Of Mouse )

  43. Impact of ReTweet

  44. Impact of ReTweet • Node 0 write a message

  45. Impact of ReTweet • Its follower subscribe node 0’s message

  46. Impact of ReTweet • Node 4 retweets node 0 ‘s message

  47. Impact of ReTweet • Node 4’s follower subscribe retweet message

  48. Impact of ReTweet • Node 0 is a writer • Node 4 is a retweeter

  49. Impact of ReTweet • 1 hop neighbors

  50. Impact of ReTweet • More goes further

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