Subjective Privacy Information: Concepts, Models and Characteristics

This study addresses the limitations in existing privacy protection mechanisms by proposing a novel subjective privacy information model. Our model analyzes privacy information from the subject's perspective, identifying it as a combination of subjects and privacy attributes in various environments. Utilizing quantum decision theory, we establish a measure framework for subjective willingness to expose privacy information. Additionally, we quantify the degree of privacy attribute attachment through subject anonymization. The resulting subjective privacy information sensitivity measure framework incorporates willingness to expose privacy attributes and attachment degree. By collecting diverse individuals' attitudes in different environments, we explore and validate the model's insights into privacy information properties. This research establishes a theoretical foundation for future subject-centered privacy protection strategies, aiming to enhance their effectiveness.