Privacy-Preserving Public Release of Datasets for Support Vector Machine Classification
Source TitleIEEE Transactions on Big Data
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
University of Melbourne Author/sFarokhi, Farhad
AffiliationElectrical and Electronic Engineering
Document TypeJournal Article
CitationsFarokhi, F. (2020). Privacy-Preserving Public Release of Datasets for Support Vector Machine Classification. IEEE Transactions on Big Data, https://doi.org/10.1109/tbdata.2019.2963391.
Access StatusOpen Access
We consider the problem of publicly releasing a dataset for support vector machine classification while not infringing on the privacy of data subjects (i.e., individuals whose private information is stored in the dataset). The dataset is systematically obfuscated using an additive noise for privacy protection. Motivated by the Cramér-Rao bound, inverse of the trace of the Fisher information matrix is used as a measure of the privacy. Conditions are established for ensuring that the classifier extracted from the original dataset and the obfuscated one are close to each other (capturing the utility). The optimal noise distribution is determined by maximizing a weighted sum of the measures of privacy and utility. The optimal privacy-preserving noise is proved to achieve local differential privacy. The results are generalized to a broader class of optimization-based supervised machine learning algorithms. Applicability of the methodology is demonstrated on multiple datasets.
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