【目的/意義】由于微博消息發布的自由隨意性,微博中的虛假信息泛濫,且難以識別,信息冗余、信息失衡等問題也很突出,這給人們通過微博獲取資訊帶來了很大的困擾。【方法/過程】本文主要研究的是通過微博中"關注"與"被關注"的關系構建媒體領袖間的關注網絡,運用社會網絡分析的相關方法對該網絡中的主流媒體進行識別,分析評價網絡中的節點在消息傳播方面的作用,并從整體和局部兩個方面分析媒體領袖間的關系網絡對消息傳播的影響。【結果/結論】據此提出一些有利于微博消息傳播和擴散的建議,幫助人們通過微博獲得真實、準確、全面的資訊,也有利于改善微博環境。

【Purpose/significance】Because of the freedom and randomness of its information release,there are many promi-nent problems,such as information falsehood,redundancy and imbalance,which causes troubles for people to access to infor-mation through micro-blog.【Method/process】This paper mainly studies the construction of media leadersconcerning withthe network through micro-blog in the "following" and "followed", using social network analysis method for the identifica-tion of the mainstream media in the network, analyzes the role of node evaluation in network message communication aswell as the influence of the network relationship between media leaders the news spread from the overall and partial two as-pects.【Result/conclusion】Based on this, some suggestions are put forward to promote the spread and diffusion of mi-cro-blog news, which can help people get real, accurate and comprehensive information through micro-blog, and also helpto improve the environment of micro-blog.