Differentially private data release through multidimensional partitioning

  • Authors:
  • Yonghui Xiao;Li Xiong;Chun Yuan

  • Affiliations:
  • Emory University, Atlanta, GA and Tsinghua University, Graduate School at Shenzhen, Shenzhen, China;Emory University, Atlanta, GA;Tsinghua University, Graduate School at Shenzhen, Shenzhen, China

  • Venue:
  • SDM'10 Proceedings of the 7th VLDB conference on Secure data management
  • Year:
  • 2010

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Abstract

Differential privacy is a strong notion for protecting individual privacy in privacy preserving data analysis or publishing. In this paper, we study the problem of differentially private histogram release based on an interactive differential privacy interface. We propose two multidimensional partitioning strategies including a baseline cell-based partitioning and an innovative kd-tree based partitioning. In addition to providing formal proofs for differential privacy and usefulness guarantees for linear distributive queries, we also present a set of experimental results and demonstrate the feasibility and performance of our method.