Accuracy-Privacy Trade-off in Analyzing Randomized Responses

05/16/2018

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by   Yuuya Yoshida, et al.

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nagoya-u.ac.jp

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Southern University of Science & Technology

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We consider the problem of analyzing a global property of private data, where the privacy of individual respondent is protected through releasing randomized responses, subject to a certain rule. However, there is always a trade-off between global accuracy and individual privacy. Here we focus on the scenarios of answering YES/NO questions and derive an optimal solution to the trade-off problem, which aims at optimizing the estimation of the global property while maintaining a given level of privacy on the individual data.