Cited by 128Ethics and Social Impacts of AIImbalanced Data Classification TechniquesExplainable Artificial Intelligence (XAI)

Adaptive Sensitive Reweighting to Mitigate Bias in Fairness-aware Classification

Open access
Krasanakis, Emmanouil, Spyromitros-Xioufis, Eleftherios, Papadopoulos, Symeon, Kompatsiaris, Yiannis·2018·Proceedings of the 2018 World Wide Web Conference on World Wide Web - WWW '18

Abstract

Machine learning bias and fairness have recently emerged as key issues due to the pervasive deployment of data-driven decision making in a variety of sectors and services. It has often been argued that unfair classifications can be attributed to bias in training data, but previous attempts to 'repair' training data have led to limited success. To circumvent shortcomings prevalent in data repairing approaches, such as those that weight training samples of the sensitive group (e.g. gender, race, financial status) based on their misclassification error, we present a process that iteratively adapts training sample weights with a theoretically grounded model. This model addresses different kinds of bias to better achieve fairness objectives, such as trade-offs between accuracy and disparate impact elimination or disparate mistreatment elimination. We show that, compared to previous fairness-aware approaches, our methodology achieves better or similar trades-offs between accuracy and unfairness mitigation on real-world and synthetic datasets.

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Registry

Crossref · 10.1145/3178876.3186133

Cites

38 of 38 references verified0 citation errors · 0 not checkable

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  • [181] note that some classifiers may be unaffected by the presence or specific nuances of some biases, and others may be negatively affected by altering the training data in an attempt to mitigate them.

    “[181] also note that some classiiers may be unafected by the presence or speciic nuances of some biases, and others may be negatively afected by altering the training data in an attempt to mitigate them.”

    From Fairness in machine learning: A survey (2024) · cites this paper as [181]

  • Weights can be introduced to improve classifier stability.

    “Weights can be introduced for multiple purposes: 1) to indicate a frequency count for an instance type (e.g.[52]), 2) to place lower/higher importance on łsensitivež training samples (e.g.[53,152,165]), or 3) to improve classiier stability (e.g.[181]).”

    From Fairness in machine learning: A survey (2024) · cites this paper as [181]

  • [181] first build an unweighted classifier, learn the weights of samples, then retrain their classifier using these weights (in-processing).

    “Whereas, [181] irst build an unweighted classiier, learn the weights of samples, then retrain their classiier using these weights (in-processing).”

    From Fairness in machine learning: A survey (2024) · cites this paper as [181]

  • Classifier stability and robustness can be an issue with reweighing.

    “However, as [117,181] note, classiier stability and robustness can be an issue.”

    From Fairness in machine learning: A survey (2024) · cites this paper as [181]

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Authors
Krasanakis, E., Spyromitros-Xioufis, E., Papadopoulos, S., & Kompatsiaris, Y.
Affiliations
  • Information Technologies Institute (GR)
  • Centre of Research &Technology - Hellas (CERTH), Information Technologies Institute (ITI), Thessaloniki, Greece
Venue
Proceedings of the 2018 World Wide Web Conference on World Wide Web - WWW '18
Publisher
ACM Press
Published
2018
Pages
853-862
OpenAlex
W2788241675
Cited by
127
References
39
Citations by year
2026: 12 · 2025: 19 · 2024: 24 · 2023: 25 · 2022: 13 · 2021: 15 · 2020: 13 · 2019: 5 · 2018: 1
FWCI
15.22
Type
conference paper
Language
en
Open access
Locations
International World Wide Web Conference (WWW) (publishedVersion, cc-by)
Funders
European Commission (688363, 687786)
Topics
  • Social Sciences › Safety Research › Ethics and Social Impacts of AI
  • Physical Sciences › Computer Science › Artificial Intelligence › Imbalanced Data Classification Techniques
  • Physical Sciences › Computer Science › Artificial Intelligence › Explainable Artificial Intelligence (XAI)
Keywords
algorithmic fairness, bias mitigation, fairness-accuracy trade-off, sensitive groups, data repair

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