A survey on differential privacy methods for big data privacy protection

In the era of big data, ensuring data privacy has emerged as a significant challenge in large-scale data applications. Currently, differential privacy is one of the most promising privacy preserving algorithms, as it provides an explicit measure of the degree of privacy protection. Although the development of differential privacy is still in its early stages within the field of statistics, it is expected to play an integral role in future research. Motivated by this, this paper first provides a review of the development of privacy models, including the detailed introduction and interpretation of the differential privacy framework. In addition, we present the applications of several commonly used noise mechanisms and elaborate on the parallel and sequential composition theorems in differential privacy. Finally, this paper also discusses potential future research on differential privacy for online data analysis and statistical inference.