Abstract:

An evaluation algorithm based on HRank was proposed to evaluate the users' influence in microblog social networking platform. By introducing H parameter which used for judging the scientific research achievements of scientists and considering the user's followers and their microblog forwarding numbers, two new H-index models of followers H-index and microblog-forwarded H-index were given. Both of them could represent the users' static characters and their dynamic activities in microblog, respectively. And then the HRank model was established to make comprehensive assessment on users' influence. Finally, the experiments were conducted on Sina microblog data using the HRank model and the PageRank model, and the results were analyzed by correlation on users' influence rank and compared to the results given by Sina microblog. The results show that user influence does not have strong correlation with the number of fans, and the HRank model outperforms the PageRank model. It indicates that the HRank model can be used to identify users influence effectively.

Key words: user influence, microblog, PageRank, H-index

摘要：

针对微博社交网络平台中的用户影响力评价问题,提出了一种基于HRank的评价算法。该算法将评价科学家科研绩效影响力的判定参数H指数引入进来,构造出能反映用户影响覆盖度的粉丝H指数和用户微博受追捧程度的微博被转发H指数,以分别表征用户的静态特征和在微博平台上的动态行为特征。在此基础上,结合粉丝H指数和微博被转发H指数构建出对用户影响力进行综合评价的HRank模型。粉丝数与用户影响力的相关性不是很强,同样数据集下相对PageRank,HRank用户影响力模型与新浪用户影响力官方排名更为接近,可有效实现对微博用户影响力的客观评判。

关键词: 用户影响力, 微博, PageRank, H指数