中文摘要：

为探究国际云计算研究知识体系的扩散与演化，本文以WOS平台SSCI、SCI数据库中2601篇云计算研究文献为样本，构建关键词网络并采用文本挖掘、聚类分析等技术将研究主题细分为云计算技术、云系统开发与评估、云服务体系、云计算应用、云计算与新兴技术的融合、云服务安全与隐私等6大主题域，进而结合时序分析方法分析了文献网络的结构和内容的扩散与演化过程。研究表明：云计算知识体系架构正在不断形成和完善，云技术将推动各个行业进入更加智能化和智慧化的发展阶段，未来云应用的重点将集中在政府管理、教育、医疗、能源管理等领域。

英文摘要：

To explore the diffusion and evaluation of cloud computing research knowledge system, this paper constructs keywords network based on 2601 literatures about cloud computing in SSCI and SCI databases from WOS platform, and applies text mining technology and clustering analysis technology to divide the research subjects into six topics groups, including cloud computing technology, cloud system development and evaluation, cloud service system, cloud computing application, combination of cloud computing and other new technologies, cloud service security and privacy. After that, time sequence analysis method is applied to analyze the diffusion and evolution of literature networlgs strucure and content. The result shows that cloud computing knowledge system become more and more abundant, cloud computing technology will impel many industries into more intelligent and smart development phase. In the future, the emphasis of cloud application will focus on government management, education, medical care, energy management and other fields.