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Invariant post-tabular protection of census frequency counts

Shlomo, Natalie and Young, Caroline, (2008) Invariant post-tabular protection of census frequency counts Domingo-Ferrer, Josep and Saygin, Yücel (eds.) In Privacy in Statistical Databases. Springer., pp. 77-89. (doi:10.1007/978-3-540-87471-3_7).

Record type: Conference or Workshop Item (Paper)


Some countries use forms of random rounding as a post-tabular method to protect Census frequency counts disseminated in tables. These methods typically result in inconsistencies between aggregated internal cells to marginal totals and across same cells in different tables. A post-tabular method for perturbing frequency counts is proposed which preserves totals and corrects to a large extent inconsistencies. The perturbation is based on invariant probability transition matrices and the use of microdata keys. This method will be compared to common pre and post-tabular methods for protecting Census frequency counts.

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Published date: 2008
Venue - Dates: UNESCO Chair in Data Privacy International Conference (PSD 2008), 2008-09-24 - 2008-09-26
Keywords: invariantprobability transition matrix, microdata keys, additivity, consistency


Local EPrints ID: 64422
ISBN: 3540874704
PURE UUID: 484303d2-aee6-422a-957b-0d0cd857087a

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Date deposited: 12 Jan 2009
Last modified: 17 Jul 2017 14:13

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Author: Natalie Shlomo
Author: Caroline Young
Editor: Josep Domingo-Ferrer
Editor: Yücel Saygin

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