Senavirathne, Navoda and Torra, Vicenç (2019) Rounding based continuous data discretization for statistical disclosure control. Journal of Ambient Intelligence and Humanized Computing. ISSN 1868-5137

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Abstract

“Rounding” can be understood as a way to coarsen continuous data. That is, low level and infrequent values are replaced by high-level and more frequent representative values. This concept is explored as a method for data privacy with techniques like rounding, microaggregation, and generalisation. This concept is explored as a method for data privacy in statistical disclosure control literature with perturbative techniques like rounding, microaggregation and non-perturbative methods like generalisation. Even though “rounding” is well known as a numerical data protection method, it has not been studied in depth or evaluated empirically to the best of our knowledge. This work is motivated by three objectives, (1) to study the alternative methods of obtaining the rounding values to represent a given continuous variable, (2) to empirically evaluate rounding as a data protection technique based on information loss (IL) and disclosure risk (DR), and (3) to analyse the impact of data rounding on machine learning based models. Here, in order to obtain the rounding values we consider discretization methods introduced in the unsupervised machine learning literature along with microaggregation and re-sampling based approaches. The results indicate that microaggregation based techniques are preferred over unsupervised discretization methods due to their fair trade-off between IL and DR.

Item Type:	Article
Additional Information:	Cite as: Senavirathne, N., Torra, V. Rounding based continuous data discretization for statistical disclosure control. J Ambient Intell Human Comput (2019). https://doi.org/10.1007/s12652-019-01489-7
Keywords:	Rounding for micro data; Unsupervised discretization; Micro data protection;
Academic Unit:	Faculty of Science and Engineering > Research Institutes > Hamilton Institute
Item ID:	14065
Identification Number:	https://doi.org/10.1007/s12652-019-01489-7
Depositing User:	Vicenç Torra
Date Deposited:	24 Feb 2021 15:16
Journal or Publication Title:	Journal of Ambient Intelligence and Humanized Computing
Publisher:	Springer
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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