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This research proposes a novel "user-side" approach to algorithmic fairness where minority groups strategically relabel their own data to counteract model biases, bypassing the need for corporate intervention or utility loss. By validating these model-agnostic methods on real-world datasets, the study demonstrates that coordinated collective action can significantly reduce unfairness with minimal impact on overall prediction accuracy. This shifts the paradigm from firm-centric mitigation to empowering end-users as active agents in correcting systemic bias within machine learning systems.
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Minority Collective Action for User-Side Fairness

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arXiv:2508.15374v3 Announce Type: replace Abstract: Machine learning models often preserve biases present in training data, leading to unfair treatment of certain minority groups. Despite an array of existing firm-side bias mitigation techniques, they typically incur utility costs and require organizational buy-in. Recognizing that many models rely on user-contributed data, end-users can induce fairness through the framework of Algorithmic Collective Action, where a coordinated minority group strategically relabels its own data to enhance fairness, without altering the firm's training process. We propose three practical, model-agnostic methods to approximate ideal relabeling and validate them on real-world datasets. Our findings show that a subgroup of the minority can substantially reduce unfairness with a small impact on the overall prediction error.

Abstract:Machine learning models often preserve biases present in training data, leading to unfair treatment of certain minority groups. Despite an array of existing firm-side bias mitigation techniques, they typically incur utility costs and require organizational buy-in. Recognizing that many models rely on user-contributed data, end-users can induce fairness through the framework of Algorithmic Collective Action, where a coordinated minority group strategically relabels its own data to enhance fairness, without altering the firm's training process. We propose three practical, model-agnostic methods to approximate ideal relabeling and validate them on real-world datasets. Our findings show that a subgroup of the minority can substantially reduce unfairness with a small impact on the overall prediction error.

Machine Learning (cs.LG); Computers and Society (cs.CY)

arXiv:2508.15374 [cs.LG]

(or arXiv:2508.15374v3 [cs.LG] for this version)

https://doi.org/10.48550/arXiv.2508.15374 Focus to learn more arXiv-issued DOI via DataCite

https://doi.org/10.1145/3846167.3848593 Focus to learn more DOI(s) linking to related resources

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