fairadapt: Causal Reasoning for Fair Data Preprocessing

doi:10.18637/jss.v110.i04

fairadapt: Causal Reasoning for Fair Data Preprocessing

2024-01-01

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DOI：10.18637/jss.v110.i04

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Machine learning algorithms are useful for various prediction tasks, but they can also learn how to discriminate, based on gender, race or other sensitive attributes. This realization gave rise to the field of fair machine learning, which aims to recognize, quantify and ultimately mitigate such algorithmic bias. This manuscript describes the R package fairadapt, which implements a causal inference preprocessing method. By making use of a causal graphical model alongside the observed data, the method can be used to address hypothetical questions of the form What would my salary have been, had I been of a different gender/race?. Such individual level counterfactual reasoning can help eliminate discrimination and help justify fair decisions. We also discuss appropriate relaxations which assume that certain causal pathways from the sensitive attribute to the outcome are not discriminatory.

Keywords:

algorithmic fairness

causal inference

machine learning

fairadapt: Causal Reasoning for Fair Data Preprocessing

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