Efficient and private approximations of distributed databases calculations

Philip Derbeko, Shlomi Dolev, Ehud Gudes, Jeffrey D. Ullman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


In recent years, an increasing amount of data is collected in different and often, not cooperative, databases. The problem of privacy-preserving, distributed calculations over separate databases and, a relative to it, the issue of private data release were intensively investigated. However, despite a considerable progress, computational complexity, due to an increasing size of data, remains a limiting factor in real-world deployments, especially in case of privacy-preserving computations. In this paper, we suggest sampling as a method of improving computational performance. Sampling was a topic of extensive research that recently received a boost of interest. We provide a sampling method targeted at separate, non-collaborating, vertically partitioned datasets. The method is exemplified and tested on approximation of intersection set both without and with privacy-preserving mechanism. An analysis of the bound on error as a function of the sample size is discussed and heuristic algorithm is suggested to further improve the performance. The algorithms were implemented and experimental results confirm the validity of the approach.

Original languageEnglish
Title of host publicationProceedings - 2017 IEEE International Conference on Big Data, Big Data 2017
EditorsJian-Yun Nie, Zoran Obradovic, Toyotaro Suzumura, Rumi Ghosh, Raghunath Nambiar, Chonggang Wang, Hui Zang, Ricardo Baeza-Yates, Ricardo Baeza-Yates, Xiaohua Hu, Jeremy Kepner, Alfredo Cuzzocrea, Jian Tang, Masashi Toyoda
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages10
ISBN (Electronic)9781538627143
StatePublished - 1 Jul 2017
Event5th IEEE International Conference on Big Data, Big Data 2017 - Boston, United States
Duration: 11 Dec 201714 Dec 2017

Publication series

NameProceedings - 2017 IEEE International Conference on Big Data, Big Data 2017


Conference5th IEEE International Conference on Big Data, Big Data 2017
Country/TerritoryUnited States


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