Measuring Micro-blogging User Influence Based on User-Tweet Interaction Model

摘要

Measuring micro-blogging user influence is very important both in economic and social fields. In this paper, we propose a user-tweet interaction model to describe the relationships among users and tweets. Considering the time affect, TAC(time-effectiveness attenuation coefficient) is proposed when calculating tweet influence which consists of retweet influence and comment influence. Then we make a detail analysis on the generation of user influence which consists of post influence and follow influence based on the results of tweet influences. We also discuss the correlation between post influence and follow influence by use of Spearman's rank correlation coefficient. At last, we rank users by calculating the bias spatial distances. Taking Sina micro-blogging as background, after a series of experiments, we believe that our method is accurate and comprehensive when measuring the influences of micro-blogging users.