：将文献计量视角的智库研究推进到内容单元，既顺应了大数据分析在社会科学范畴的发展趋势，也可为智库研究、政策研究等领域提供一种新的研究思路和方法。文章运用共词分析、社会网络分析等方法，借助自然语言处理技术和可视化技术手段，对2007-2016年期间美国一流智库在网络安全领域的文本型成果进行内容分析，绘制了研究区域分布图、研究主题分布网络和研究内容演化图。研究结果发现美国智库在网络安全领域的研究区域覆盖全球，研究议题有安全防务与反恐、国际战略、关键基础设施和网络空间发展治理、公共信息安全与法律等四类主要研究方向。

Using biblometrics to analyze the research of think-tanks on the layer of content units conforms to the trend of big data analysis in the social sciences category and can also provide new methods in think-tank research and policy research. This paper uses co-word analysis method, social networks analysis method, NLP and visualization tools to analyze the text type results of American's top think-tanks research in cyber-security during the period from 2001 to 2015. Maps of research area, research topics distribution network and content evolution were drawn. American think-tanks' research in cybersecurity has a global coverage area. There are four research agendas: defense security and counter-terrorism, international strategy, cyberspace development governance and infrastructure, public information policy and law.