新浪微博影响力分析论文汇报

Experiment
① 1142 users ② 129088 retweet links ③ 225213 comment links.
Result
Result
Result
Result
Conclusions
Introduced three basic “interpersonal” actions: follow, retweet and comment action. Propose a model and apply it to Weighted PageRank and HITS algorithms. Comprehensive and stable method
half of the Weibos contain action
Figure. 3 Mention number and retweet number.
many users tend to interact with others when they post Weibo,interaction is a very important action on Sina Weibo
Background
Sina Weibo
one of the most notable and widely used micro-blogging services
Influence
the potential of an action of a user to initiate a further action by another user
Methodቤተ መጻሕፍቲ ባይዱ
Three important actions on microblog
Follow
Follow Network Matrix F Retweet Retweet Network Matrix R Comment Comment Network Matrix C
Method
Matrix F
• User Influence Analysis on Micro Blog
Yong Zhang, Jiaqin Mo, Tingting He
Central China Normal University
2012.11.01
Outline
Background Related Work Basic Analysis Method Experiment Conclusion
=1.35
Method
Rank Algorithms
① PageRank
② Weighted PageRank
③ HITS(Hyperlink-Induced Topic Search)
Experiment
Dataset (analysis)
① ② ③ ④ 467823 follow links 67832 followees 400000 followers 389092 users
Related work
Methods to identify user influence on micro blogging ① In-degree ② Ratio between in-degree and outdegree ③ PageRank ④ XinRank ⑤ Action-based network model
Influence Users
make trends or innovations be adopted faster, help decision markers develop more effective strategies
Significance
one may achieve a large-scale chain-reaction of influence driven by word-of-mouth with a very small marketing cost
Matrix R
Matrix C
Method
Combination matrix M
Example：
follow A retweet A 2 B B comment A 5 B
α=1, β=0.05, γ=0.05 F(A,B) = 1 R(A,B) = 2 C(A,B) = 5 W(A,B) = 1*1+2*0.05+5*0.05
not a positive correlation
Weibo number and follower number. follower number is not the key factor for users to post Weibo
Basic Analysis
User interaction analyzing
Basic Analysis
Follower number distribution
Number of followers.
average follower number:33842
70.7% of the users are above the average
Basic Analysis
Relation between Weibo number and follower number