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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.
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. 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.