A Social Network Model With Privacy Preserving and Reliability Assurance and Its Applications in Health Care

Social media has become a platform to provide big data services. In health care applications, online E - health platforms have enabled patients to obtain useful references on the Internet, as well as to share information and exchange experiences among people with similar diseases. Such social networks also enable researchers and marketers to conduct studies or advocates on targeted groups of patients. However, h ow to protect user privacy while assure user and data reliability at the same time remains a challenge in practice. This article tackles the problem by exploring trust - engagement mechanism and developing a dynamic multi - trust model integrating multilevel access control, credible anonymity, and mutual rating mechanism for a multi - purpose healthcare social network. The social network model we presented in this study mainly focuses on the purpose of big data privacy preserving, and user and data reliability assurance. We discuss the mechanism of the model and present practical implementation designs on achieving the goals. We also apply the model in the health care social network to elaborate how electronic health records (EHRs) and personal health records (PHRs) can work together to support a social health record (SHR) network which enables privacy preserving and user and data reliability