MultiFair: Multi-Group Fairness in Machine Learning
- URL: http://arxiv.org/abs/2105.11069v1
- Date: Mon, 24 May 2021 02:30:22 GMT
- Title: MultiFair: Multi-Group Fairness in Machine Learning
- Authors: Jian Kang, Tiankai Xie, Xintao Wu, Ross Maciejewski, Hanghang Tong
- Abstract summary: We study multi-group fairness in machine learning (MultiFair)
We propose a generic end-to-end algorithmic framework to solve it.
Our proposed framework is generalizable to many different settings.
- Score: 52.24956510371455
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Algorithmic fairness is becoming increasingly important in data mining and
machine learning, and one of the most fundamental notions is group fairness.
The vast majority of the existing works on group fairness, with a few
exceptions, primarily focus on debiasing with respect to a single sensitive
attribute, despite the fact that the co-existence of multiple sensitive
attributes (e.g., gender, race, marital status, etc.) in the real-world is
commonplace. As such, methods that can ensure a fair learning outcome with
respect to all sensitive attributes of concern simultaneously need to be
developed. In this paper, we study multi-group fairness in machine learning
(MultiFair), where statistical parity, a representative group fairness measure,
is guaranteed among demographic groups formed by multiple sensitive attributes
of interest. We formulate it as a mutual information minimization problem and
propose a generic end-to-end algorithmic framework to solve it. The key idea is
to leverage a variational representation of mutual information, which considers
the variational distribution between learning outcomes and sensitive
attributes, as well as the density ratio between the variational and the
original distributions. Our proposed framework is generalizable to many
different settings, including other statistical notions of fairness, and could
handle any type of learning task equipped with a gradient-based optimizer.
Empirical evaluations in the fair classification task on three real-world
datasets demonstrate that our proposed framework can effectively debias the
classification results with minimal impact to the classification accuracy.
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