Abstract

PRATA, Paula; FERRAO, Maria Eugénia; SANTOS, Wilson  and  SOUSA, Gonçalo. Privacy Preserving Versus Utility Preserving in Data Anonymization: a study in higher education. RISTI [online]. 2020, n.40, pp.112-127.  Epub Dec 31, 2020. ISSN 1646-9895.  https://doi.org/10.17013/risti.40.112-127.

In the digital world, all human activity leaves a trace of data that is growingly valued for the evaluation and definition of strategies in varied domains. The sharing of those data, being socially relevant, implies the respect for individual privacy and so, its anonymization. The current laws and regulations about privacy offer limited guidance to deal with the vast range of datatypes or with techniques of re-identification. This work aims at illustrating a process of anonymization, comparing to several models of privacy, the loss of information and the usefulness of that dataset resulting from the anonymization. Finding a balance between privacy and utility is a challenge that can be more easily found by those who know better the meaning of the data and objectives aimed at.

Keywords : Data anonymization; k-anonymity; ℓ-diversity; t-closeness; ENADE.

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