中文摘要：

介绍了微博作为一种新型社会化媒体的基本结构和特点,并从微博的信息传播机制出发,分析认为用户交互模式较大程度地体现了微博的影响力,由此总结出微博的4个基本功能,以“新浪微博”为研究样本,甄选了7项指标构成微博影响力评价指标体系,应用主成分分析法推导出各项指标的权重,最后建立了微博影响力评价模型.

英文摘要：

The basic infrastructure and characteristics of micro-blog as a new social media were introduced in this paper.Based on the mechanism of information dissemination in micro-blog,the user interaction model of mi-cro-blogs decided the influence of micro-blogs,which was reflected by the four functions of micro-blogs.With statistics from Sina Microblog,an evaluation system of micro-blog influence composed of seven in-dexes was proposed.Further,the weight of each index was derived with principal component analysis and a complete evaluations system of micro-blog influence was built.