Abstract
Data from the American Community Survey (ACS) are collected under the authority of Title 13 of the United States Code which guarantees the confidentiality of all survey respondents. To maintain this confidentiality while still being able to release usable data, the U.S. Census Bureau applies several disclosure avoidance methods. For the ACS, data swapping techniques are used to protect records deemed “at risk”. Households are identified as at risk if they are unique on attributes selected and predetermined by the confidentiality and survey management staff. After being uniquely identified (or “flagged”), data swapping is used to exchange the geographic information of a flagged household with another flagged household. This study compared the effectiveness of the pair-swapping method currently used with a proposed n-Cycle swapping method. Specifically, the goal was to maintain the same level of disclosure protection while outputting data with less perturbation.
This report is released to inform interested parties of research and to encourage discussion. The views expressed are those of the authors and not necessarily those of the U.S. Census Bureau.
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DePersio, M., Lemons, M., Ramanayake, K.A., Tsay, J., Zayatz, L. (2012). n-Cycle Swapping for the American Community Survey. In: Domingo-Ferrer, J., Tinnirello, I. (eds) Privacy in Statistical Databases. PSD 2012. Lecture Notes in Computer Science, vol 7556. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33627-0_12
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DOI: https://doi.org/10.1007/978-3-642-33627-0_12
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