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Simulation Study of the Effectiveness of Masking Microdata with Mixtures of Multivariate Normal Distributions

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Simulation Study of the Effectiveness of Masking Microdata with Mixtures of Multivariate Normal Distributions

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Simulation Study of the Effectiveness of Masking Microdata with Mixtures of Multivariate Normal Distributions
Download Simulation Study of the Effectiveness of Masking Microdata with Mixtures of Multivariate Normal Distributions [PDF - <1.0 MB]

Continuous variables in microdata can be masked for protection from disclosure through the use of an additive noise. I consider adding noise that is distributed according to a mixture of normal distributions. There are several parameters involved in constructing the additive noise. The study’s purpose is to lay down as a guide a recipe for the choices of these parameters. The proportion of re-identifiable records through the use of Winkler’s matching software measures effectiveness of the masking method. Results depend heavily on the matching software used.

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