Abstract The key of Library reform lies in the innovative ideas above the technical support. The focus on big data not only makes people realize the significance of the data itself, but more importantly, provides a new way of thinking, that is the big data notion of finding data, analyzing resources with the angle of data, and mining new value of data. Digitization work of the library in long term has accumulated and continuously generated a large number of data, including collection knowledge data, bibliographic data, user data and job data. Utilization of these data can not only promote the development of knowledge service, but also play an important role in the big data research and the innovation of library work.
Keywords Library big data. Data mining. Data processing. Knowledge service.