【目的】識別意見領袖,從而研究分析意見領袖網在微博中的作用。【方法】利用兩步聚類的方法識別意見領袖,通過"關注"關系構建意見領袖之間的網絡矩陣;通過對各類用戶情感進行分析,研究意見領袖網在微博中的作用。【結果】研究結果表明:總體用戶的情感主要以消極情感為主,并且意見領袖網的情感會對普通用戶的情感產生影響。【局限】僅針對單個事件進行研究,并且識別意見領袖時僅采用兩步聚類方法。【結論】明星與大V類意見領袖網的積極情感變化對普通用戶的積極情感變化影響最大。

[Objective] This paper tries to identify the opinion leaders of Weibo and examines their roles in information dissemination. [Methods] We adopted, a method of two-step clustering to identify opinion leaders of the "illegal vaccine" event. Then, we created a network matrix for these opinion leaders based on their relationship. Finally, we analyzed the sentiments of the Weibo users to evaluate the role of opinion leaders' network. [Results] The overall users' sentiments was negative. The opinion leaders' network posed significant impacts on the sentiments of average users. [Limitations] Only examined our method with one event. [Conclusions] The celebrities and opinion leaders play important role to sway the public opinion online.