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Enhanced Privacy Preserving for Social Networks Relational data Based on Personalized Differential Privacy

Chinese Journal of Electronics 2022年第4期31卷 741-751页

作者： KANG Haiyan JI Yuanrui ZHANG Shuxuan School of Information Management Beijing Information Science and Technology University Computer School Beijing Information Science and Technology University

With the popularization and development of social software, more and more people join the social network, which produces a lot of valuable information, but also contains plenty of sensitive privacy information. To achieve the personalized privacy protection of massive social network relational data, a privacy enhancement method for social networks relational data based on personalized differential privacy is proposed. And a dimensionality reduction segmentation sampling(DRS-S)algorithm is proposed to implement this method. First, in order to solve the problem of inefficiency caused by the excessive amount of data in social networks, dimension reduction and segmentation are carried out to divide the data into groups. According to the privacy protection requirements of different users, we adopt sampling method to protect users with different privacy requirements at different levels, so as to realize personalized different privacy. After that, the noise is added to the protected data to satisfy the privacy budget. Then publish the social network data. Finally, the proposed algorithm is compared with the traditional personalized differential privacy(PDP) algorithm and privacy preserving approach based on clustering and noise(PBCN) in real data set, the experimental results demonstrate that the quality of privacy protection and data availability of DRS-S are better than that of PDP algorithm and PBCN algorithm.

关键词： enhanced privacy preserving privacy enhancement method DRS-S algorithm sampling methods personalized differential privacy algorithm Relational databases privacy protection requirements privacy budget data privacy data security real data set clustering relational databases massive social network relational data social networking (online) sensitive privacy information personalized privacy protection Other topics in statistics Information networks real data set noise pattern clustering social software dimensionality reduction segmentation sampling algorithm social network data protected data

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