arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.07286stat.MLcs.LGmath.STstat.TH
收藏

使用Wasserstein重心的公平回归

Fair Regression with Wasserstein Barycenters

Université Paris-Saclay(巴黎萨克雷大学);CNRS(法国国家科学研究中心);Inria(法国国家信息与自动化研究所);Université Gustave Eiffel(古斯塔夫·埃菲尔大学);University of Genoa(热那亚大学);Istituto Italiano di Tecnologia(意大利技术研究院);University College London(伦敦大学学院)

Evgenii Chzhen, Christophe Denis, Mohamed Hebiri, Luca Oneto, Massimiliano Pontil

摘要:

我们研究学习一个实值函数,满足人口奇偶约束的问题。它要求预测输出的分布与敏感属性无关。我们考虑的情况下,敏感属性是可用于预测。我们建立了公平回归和最优传输理论之间的联系,基于此,我们推导出一个封闭的形式表达的最佳公平预测。具体来说,我们表明,这个最佳的分布是Wasserstein重心的分布引起的标准回归函数的敏感群体。这个结果提供了一个直观的解释最佳的公平预测,并建议一个简单的后处理算法,以实现公平。我们为这一程序建立了无风险和无分配的公平保证。数值实验表明,我们的方法是非常有效的学习公平的模型,错误率的相对增加是劣于公平性的相对增益。

英文摘要:

We study the problem of learning a real-valued function that satisfies the Demographic Parity constraint. It demands the distribution of the predicted output to be independent of the sensitive attribute. We consider the case that the sensitive attribute is available for prediction. We establish a connection between fair regression and optimal transport theory, based on which we derive a close form expression for the optimal fair predictor. Specifically, we show that the distribution of this optimum is the Wasserstein barycenter of the distributions induced by the standard regression function on the sensitive groups. This result offers an intuitive interpretation of the optimal fair prediction and suggests a simple post-processing algorithm to achieve fairness. We establish risk and distribution-free fairness guarantees for this procedure. Numerical experiments indicate that our method is very effective in learning fair models, with a relative increase in error rate that is inferior to the relative gain in fairness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑