Locating a Small Cluster Privately


Kobbi Nissim, Uri Stemmer, and Salil Vadhan. 2016. “Locating a Small Cluster Privately.” In PODS 2016. ACM SIGMOD/PODS Conference, San Francisco, USA, 2016. Date Presented: June 26 2016. ArXiv Version


We present a new algorithm for locating a small cluster of points with differential privacy [Dwork, McSherry, Nissim,and Smith, 2006]. Our algorithm has implications to private data exploration, clustering, and removal of outliers. Furthermore, we use it to significantly relax the requirements of the sample and aggregate technique [Nissim, Raskhodnikova,and Smith, 2007], which allows compiling of "off the shelf" (non-private) analyses into analyses that preserve differential privacy.

Last updated on 01/05/2017