s peaker ： x u b o t ime ： 2011/9/7
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Speaker： Xu BoTime： 2011/9/7
Questions
• How are people connected on Twitter?• Who are the most influential people?• What do people talk about?• How does information diffuse via retweet?
Question 1
• How are people connected on Twitter?– # of followings/followers– Followers vs. Tweets– Reciprocity– Degree of Separation– Homophily
Followers VS. Twitters
Followers VS. Twitters
Homophily
Question 2
• Who are the most influential people?– Followers– PageRank– Retweets
Kendall’s tau变种
Question 3
• What do people talk about?
Singleton, Reply, Mention, Retweet
We consider a trending topic inactive if there is no tweet on the topic for 24 hours(a)73% topics have a single active period; 15% have 2; 5% have 3(b)31% are 1 day long; only 7% longer than 10 days.
On the number of tweets and their times
Question 4
• How does information diffuse via retweet?
Retweet Trees• We are now interested in how far and deep retweets travel in
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