A context-aware privacy protection framework was designed for context-aware services and privacy control methods about access personal information in pervasive environment. In the process of user's privacy decision,it can produce fuzzy pri-vacy decision as the change of personal information sensitivity and personal information receiver trust. The uncertain privacy decision model was proposed about personal information disclo-sure based on the change of personal information receiver trust and personal information sensitivity. A fuzzy privacy decision information system was designed according to this model. Per-sonal privacy control policies can be extracted from this informa-tion system by using rough set theory. It also solves the problem about learning privacy control policies of personal information disclosure.
ZHANG Qingsheng QI Yong ZHAO Jizhong HOU Di NIU Yujie
