Delete My Account: Impact of Data Deletion on Machine Learning Classifiers

Fuente: arXiv
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Main Authors: Dam, Tobias, Henzl, Maximilian, Klausner, Lukas Daniel
Format: Preprint
Published: 2023
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author Dam, Tobias
Henzl, Maximilian
Klausner, Lukas Daniel
author_facet Dam, Tobias
Henzl, Maximilian
Klausner, Lukas Daniel
contents Users are more aware than ever of the importance of their own data, thanks to reports about security breaches and leaks of private, often sensitive data in recent years. Additionally, the GDPR has been in effect in the European Union for over three years and many people have encountered its effects in one way or another. Consequently, more and more users are actively protecting their personal data. One way to do this is to make of the right to erasure guaranteed in the GDPR, which has potential implications for a number of different fields, such as big data and machine learning. Our paper presents an in-depth analysis about the impact of the use of the right to erasure on the performance of machine learning models on classification tasks. We conduct various experiments utilising different datasets as well as different machine learning algorithms to analyse a variety of deletion behaviour scenarios. Due to the lack of credible data on actual user behaviour, we make reasonable assumptions for various deletion modes and biases and provide insight into the effects of different plausible scenarios for right to erasure usage on data quality of machine learning. Our results show that the impact depends strongly on the amount of data deleted, the particular characteristics of the dataset and the bias chosen for deletion and assumptions on user behaviour.
format Preprint
id arxiv_https___arxiv_org_abs_2311_10385
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Delete My Account: Impact of Data Deletion on Machine Learning Classifiers
Dam, Tobias
Henzl, Maximilian
Klausner, Lukas Daniel
Machine Learning
Computers and Society
Users are more aware than ever of the importance of their own data, thanks to reports about security breaches and leaks of private, often sensitive data in recent years. Additionally, the GDPR has been in effect in the European Union for over three years and many people have encountered its effects in one way or another. Consequently, more and more users are actively protecting their personal data. One way to do this is to make of the right to erasure guaranteed in the GDPR, which has potential implications for a number of different fields, such as big data and machine learning. Our paper presents an in-depth analysis about the impact of the use of the right to erasure on the performance of machine learning models on classification tasks. We conduct various experiments utilising different datasets as well as different machine learning algorithms to analyse a variety of deletion behaviour scenarios. Due to the lack of credible data on actual user behaviour, we make reasonable assumptions for various deletion modes and biases and provide insight into the effects of different plausible scenarios for right to erasure usage on data quality of machine learning. Our results show that the impact depends strongly on the amount of data deleted, the particular characteristics of the dataset and the bias chosen for deletion and assumptions on user behaviour.
title Delete My Account: Impact of Data Deletion on Machine Learning Classifiers
topic Machine Learning
Computers and Society
url https://arxiv.org/abs/2311.10385