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arXiv 2102.00417cs.AI
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基于优先级的个人和群体公平后处理偏差缓解

Priority-based Post-Processing Bias Mitigation for Individual and Group Fairness

IBM Research AI(IBM人工智能研究院)

Pranay Lohia

摘要:

以前的后处理偏差缓解算法在群体和个人公平性上都不适用于具有多类数字标签的回归模型和数据集。我们提出了一个基于优先级的后处理偏见缓解群体和个人的公平性的概念,类似的个人应该得到类似的结果,无论社会经济因素和更多的不公平,更多的不公正。我们建立了一个案例研究在智能电网电价分配这一命题。我们的新框架通过使用用户细分算法来更好地捕捉消费策略来建立它。这一过程确保了对面临最大不公正的群体和个人的基于优先级的公平定价。它坚持在不修改关税计算的内在程序的情况下考虑到向全体人口公平分配关税的概念。我们还验证了我们的方法,并显示出比之前在刑事量刑的真实数据集上的工作更优越的性能。

英文摘要:

Previous post-processing bias mitigation algorithms on both group and individual fairness don't work on regression models and datasets with multi-class numerical labels. We propose a priority-based post-processing bias mitigation on both group and individual fairness with the notion that similar individuals should get similar outcomes irrespective of socio-economic factors and more the unfairness, more the injustice. We establish this proposition by a case study on tariff allotment in a smart grid. Our novel framework establishes it by using a user segmentation algorithm to capture the consumption strategy better. This process ensures priority-based fair pricing for group and individual facing the maximum injustice. It upholds the notion of fair tariff allotment to the entire population taken into consideration without modifying the in-built process for tariff calculation. We also validate our method and show superior performance to previous work on a real-world dataset in criminal sentencing.

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