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Which of the Four Options for the Resampling Technique Are Good for Continuous Data

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Resampling methods for generating continuous multivariate synthetic data for disclosure control

Journal of Data, Information and Management volume 3,pages 225–235 (2021)Cite this article

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Abstract

Sharing microdata within or outside of an organization may lead to the disclosure of sensitive information of an individual. Data stewarding organizations often disseminate synthetic data to reduce the likelihood of disclosure of sensitive information. Synthetic data can be generated from posterior predictive distributions, however, finding a distribution in multidimensional space is not straight forward. If a distribution function is correctly estimated, synthetic data generated from the estimated distribution will hold all statistical properties of the original data. In practice, distribution functions are unknown and estimation of distribution function under some assumptions may result in a synthetic data set that does not hold statistical properties of the original data. This paper develops synthetic data generating methods based on resampling from singular vectors and eigenvalues without requiring estimation of posterior predictive distribution function for the data matrix. Methods developed in this paper have been implemented to generate continuous multivariate synthetic data, and performances of these methods are studied by comparing the disclosure risk and information loss measures. A rectangular cuboid is also constructed from the lower quartiles of information loss and disclosure risk measures, and selection of synthetic data from this rectangular cuboid is found to reduce the disclosure risk and information loss of these methods further.

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Acknowledgements

The authors wish to thank Dr. Christine M. O'Keefe for helpful comments on an early version of this manuscript. We are indebted to anonymous reviewers of an earlier version of this paper for providing insightful comments and providing directions for additional work which has resulted in this paper. Without the anonymous reviewers supportive work this paper would not have been possible.

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Authors and Affiliations

  1. North South University, Dhaka, Bangladesh

    Atikur R Khan

  2. University of Southern Queensland, Towoomba, QLD, 4350, Australia

    Enamul Kabir

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Correspondence to Atikur R Khan.

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The authors have no competing interests to declare.

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Khan, A.R., Kabir, E. Resampling methods for generating continuous multivariate synthetic data for disclosure control. J. of Data, Inf. and Manag. 3, 225–235 (2021). https://doi.org/10.1007/s42488-021-00054-2

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  • DOI : https://doi.org/10.1007/s42488-021-00054-2

Keywords

  • Confidentiality protection
  • Disclosure risk
  • Information loss
  • Microdata
  • Multivariate synthetic data

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