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Activity Number: 550 - Differential Privacy in Statistical Agencies: Present and Future
Type: Invited
Date/Time: Wednesday, August 2, 2017 : 2:00 PM to 3:50 PM
Sponsor: Government Statistics Section
Abstract #325047
Title: Experiences with Differentially Private Geocoded Administrative Data
Author(s): Jörg Drechsler* and Jordi Soria-Comas
Companies: Institute for Employment Research and Universitat Rovira i Virgili
Keywords: differential privacy ; microaggregation ; disclosure control ; geocode

In this talk we propose a differentially private procedure for releasing detailed geographical information based on a micro-aggregation algorithm with a fixed minimal cluster size. We evaluate whether meaningful results can be obtained with this approach using administrative data gathered by the German Federal Employment Agency. Detailed geocoding information has been added to this database recently and plans call for making this valuable source of information available to the scientific community. We generate differentially private microdata using different levels of geographical detail to identify the most detailed level that still provides acceptable analytical validity while offering strong privacy guarantees. Strategies for obtaining approximately valid inferences from the perturbed data will also be discussed.

Authors who are presenting talks have a * after their name.

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