Speaker：Xu Bo Time：2011/9/7.

Slides:

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Presentation transcript:

Speaker：Xu Bo Time：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 Twitter