Auditing a Dutch Public Sector Risk Profiling Algorithm Using an Unsupervised Bias Detection Tool

Fuente: arXiv
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Auteurs principaux: Holstege, Floris, Jorgensen, Mackenzie, Padh, Kirtan, Parie, Jurriaan, Prorokovic, Krsto, Persson, Joel, Snoek, Lukas
Format: Preprint
Publié: 2025
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author Holstege, Floris
Jorgensen, Mackenzie
Padh, Kirtan
Parie, Jurriaan
Prorokovic, Krsto
Persson, Joel
Snoek, Lukas
author_facet Holstege, Floris
Jorgensen, Mackenzie
Padh, Kirtan
Parie, Jurriaan
Prorokovic, Krsto
Persson, Joel
Snoek, Lukas
contents Algorithms are increasingly used to automate or aid human decisions, yet recent research shows that these algorithms may exhibit bias across legally protected demographic groups. However, data on these groups may be unavailable to organizations or external auditors due to privacy legislation. This paper studies bias detection using an unsupervised bias detection tool when data on demographic groups are unavailable. We collaborated with the Dutch Executive Agency for Education to audit an algorithm that was used to assign risk scores to college students at the national level in the Netherlands between 2012-2023. Our audit covers more than 250,000 students across the country. The unsupervised bias detection tool highlights known disparities between students with a non-European migration background and students with a Dutch or European-migration background. Our contributions are two-fold: (1) we assess bias in a real-world, large-scale, and high-stakes decision-making process by a governmental organization; (2) we provide the unsupervised bias detection tool in an open-source library for others to use to complete bias audits. Our work serves as a starting point for a deliberative assessment by human experts to evaluate potential discrimination in algorithmic decision-making.
format Preprint
id arxiv_https___arxiv_org_abs_2502_01713
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Auditing a Dutch Public Sector Risk Profiling Algorithm Using an Unsupervised Bias Detection Tool
Holstege, Floris
Jorgensen, Mackenzie
Padh, Kirtan
Parie, Jurriaan
Prorokovic, Krsto
Persson, Joel
Snoek, Lukas
Computers and Society
Machine Learning
Algorithms are increasingly used to automate or aid human decisions, yet recent research shows that these algorithms may exhibit bias across legally protected demographic groups. However, data on these groups may be unavailable to organizations or external auditors due to privacy legislation. This paper studies bias detection using an unsupervised bias detection tool when data on demographic groups are unavailable. We collaborated with the Dutch Executive Agency for Education to audit an algorithm that was used to assign risk scores to college students at the national level in the Netherlands between 2012-2023. Our audit covers more than 250,000 students across the country. The unsupervised bias detection tool highlights known disparities between students with a non-European migration background and students with a Dutch or European-migration background. Our contributions are two-fold: (1) we assess bias in a real-world, large-scale, and high-stakes decision-making process by a governmental organization; (2) we provide the unsupervised bias detection tool in an open-source library for others to use to complete bias audits. Our work serves as a starting point for a deliberative assessment by human experts to evaluate potential discrimination in algorithmic decision-making.
title Auditing a Dutch Public Sector Risk Profiling Algorithm Using an Unsupervised Bias Detection Tool
topic Computers and Society
Machine Learning
url https://arxiv.org/abs/2502.01713