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Graph-based Clustering under Differential Privacy
Proceedings of the 34th Conference on Uncertainty in Artificial Intelligence, PMLR R16:328-337, 2018.
Abstract
In this paper, we present the first differen- tially private clustering method for arbitrary- shaped node clusters in a graph. This algo- rithm takes as input only an approximate Min- imum Spanning Tree (MST) T released under weight differential privacy constraints from the graph. Then, the underlying nonconvex clus- tering partition is successfully recovered from cutting optimal cuts on T . As opposed to ex- isting methods, our algorithm is theoretically well-motivated. Experiments support our the- oretical findings.