Network Construction Using Overlapping Histogram under Local Differential Privacy

Network construction is beneficial to extract global structural information from vector data. However, node-link information is easy to bring the problem of privacy leakage in network construction. Thus, we provided node-link preserving in network construction via overlapping histogram under local differential privacy. First, we present the general model of network construction using overlapping histogram under local differential privacy. Second, we present algorithm of random perturbation-linking in network construction via overlapping histogram to preserve node-link. Finally, our theoretical and experimental results show that the proposed scheme can achieve the tradeoff between node-link protection and network utility. The proposed scheme provides a basic method against node-link leakage in network construction via overlapping histogram.