社交网络中领域专家发现模型研究

A Mathematical Model of Domain Experts Locating in Social Networks

随着Web2.0和移动终端设备的发展,社交网络日益普及,寻找社交网络中的领域专家已成为研究热点。微博是当今流行的社交网络,以新浪微博数据为例,首先按用户发布的微博主题将用户划分为各个领域,然后提出在各领域内计算微博社交网络用户权威值的模型。模型充分考虑了用户发布的微博数目、用户粉丝数以及粉丝评论、转发和提及用户等行为对用户权威值的影响,最终计算出用户权威值。实验结果证实了该领域专家发现模型的合理性与可行性。

With the development of Web 2.0 and mobile terminal devices,social networks are becoming popular.How to locate the experts in a specific field is a research focus in this area.Sina Weibo is one of the most popular on-line socialising tools in China.This paper tries to use a mathematical model to distinguish experts from normal users of Sina Weibo.First of all,users are divided into different fields according to the posts＇ theme.And then the model,which takes into full account several user behaviors,including the amount of the posts and comments,number of fans and forward rates,will calculate the authoritative value of each user.The result of the experiment verifies the advancement of this model in the real network environment.