Yuxuan Zhang
ABSTRACT
With the rapid development of big data technology, the issue of preserving personal privacy has attracted more and more attention. It has been shown that protecting the published graph with the differential privacy can ensure not only the quantitative privacy, but also the data usability. In this paper, we first put forward an optimized randomized response algorithm for generating synthetic graph, which dose not depend on a trusted third party in charge of collecting data. Furthermore, based on multi-party computation clustering, we propose a generated graph model under local differential privacy (LDPGM). The experiment indicates that LDPGM can effectively control the density of the synthetic graph so that significantly reduce the error between the synthetic graph and the original graph. Therefore, it maintains the properties of the original graph well and ensures high usability.
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Index Terms
- A Two-Phase Algorithm for Generating Synthetic Graph Under Local Differential Privacy
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