In recent years, the campus online community has become a new technology platform for gathering graduate students' attention. The discussion on how to use the campus online community for digging a new method to measure the graduate education quality has become a heated topic for scholars. This article measures the value-added process of individual human capital dynamically based on the PeopleRank model by tracking the graduate students' behavior on the campus based online community, such as knowledge sharing, online interactive learning exchanges, publishing academic papers, and ideological education dynamic reporting. The eigenvalue calculated by SNR matrix evaluates the quality of graduate education, and the results show that the eigenvalue can stably represent the quality of graduate education. Our study expands new theories and methods in the field of education quality assessment and provides new tools for quantifying graduate education quality assessment. Introduction Nowadays, with the rapid development of social online community, such as Facebook,Twitter, Linkedin, Groupon, Youtube, Weixin, Zhihu et al, colleges and universities have also built their own campus network community, Shuimu of Tsinghua university, Tianwaitian of Tianjin university, ihome of Beihang University are the successful representative of them. These network communities are used for students' management, ideological education, knowledge sharing, and academic innovation. Over the past two decades, along with the domestic graduate enrollment continues to expand. However, the scale of educational staff and supervisor team is relatively poor increased, these have led to the academic misconduct, ideological rigidity and poor guidance relationship. The online community is also called a virtual community or an electronic community, which refers to people with common interests, hobbies, and needs to follow certain rules in a certain bounded network space and communicate through social software such as blogs, BBS, newsgroups, chat rooms, and emails [1]. It is a social community where participants focus on mutual communication, communication and interaction, and thus generate mutual closeness and recognition, and eventually form kinds of interpersonal circles [2]. This article defines the campus online community as: officially recognized and formally registered, which have integrated the function of daily administration, research, teaching management, student ideological education, academic exchange and innovation, knowledge sharing et al, the platform which was used for daily affairs and daily interactions that can meet the needs of university teachers, graduate students, and educational staff [3]. It is a network system that realizes campus intelligence in smart internet environment, which enables users or virtual roles to acquire, publish, share, and manage various resources, assisting in knowledge innovation, collaborative work, problem solving, and decision support. As time accumulates, eventually everyone gains the value added [4]. Why more...