The Fragility of Fairness: Causal Sensitivity Analysis for Fair Machine Learning

Fuente: arXiv
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Autores principales: Fawkes, Jake, Fishman, Nic, Andrews, Mel, Lipton, Zachary C.
Formato: Preprint
Publicado: 2024
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author Fawkes, Jake
Fishman, Nic
Andrews, Mel
Lipton, Zachary C.
author_facet Fawkes, Jake
Fishman, Nic
Andrews, Mel
Lipton, Zachary C.
contents Fairness metrics are a core tool in the fair machine learning literature (FairML), used to determine that ML models are, in some sense, "fair". Real-world data, however, are typically plagued by various measurement biases and other violated assumptions, which can render fairness assessments meaningless. We adapt tools from causal sensitivity analysis to the FairML context, providing a general framework which (1) accommodates effectively any combination of fairness metric and bias that can be posed in the "oblivious setting"; (2) allows researchers to investigate combinations of biases, resulting in non-linear sensitivity; and (3) enables flexible encoding of domain-specific constraints and assumptions. Employing this framework, we analyze the sensitivity of the most common parity metrics under 3 varieties of classifier across 14 canonical fairness datasets. Our analysis reveals the striking fragility of fairness assessments to even minor dataset biases. We show that causal sensitivity analysis provides a powerful and necessary toolkit for gauging the informativeness of parity metric evaluations. Our repository is available here: https://github.com/Jakefawkes/fragile_fair.
format Preprint
id arxiv_https___arxiv_org_abs_2410_09600
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle The Fragility of Fairness: Causal Sensitivity Analysis for Fair Machine Learning
Fawkes, Jake
Fishman, Nic
Andrews, Mel
Lipton, Zachary C.
Machine Learning
Computers and Society
Fairness metrics are a core tool in the fair machine learning literature (FairML), used to determine that ML models are, in some sense, "fair". Real-world data, however, are typically plagued by various measurement biases and other violated assumptions, which can render fairness assessments meaningless. We adapt tools from causal sensitivity analysis to the FairML context, providing a general framework which (1) accommodates effectively any combination of fairness metric and bias that can be posed in the "oblivious setting"; (2) allows researchers to investigate combinations of biases, resulting in non-linear sensitivity; and (3) enables flexible encoding of domain-specific constraints and assumptions. Employing this framework, we analyze the sensitivity of the most common parity metrics under 3 varieties of classifier across 14 canonical fairness datasets. Our analysis reveals the striking fragility of fairness assessments to even minor dataset biases. We show that causal sensitivity analysis provides a powerful and necessary toolkit for gauging the informativeness of parity metric evaluations. Our repository is available here: https://github.com/Jakefawkes/fragile_fair.
title The Fragility of Fairness: Causal Sensitivity Analysis for Fair Machine Learning
topic Machine Learning
Computers and Society
url https://arxiv.org/abs/2410.09600