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arXiv 2602.05084cs.LGcs.AI
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战略分类中的个体公平性

Individual Fairness In Strategic Classification

Department of Computer Science and Engineering(计算机科学与工程系);The Ohio State University(俄亥俄州立大学)

Zhiqun Zuo, Mohammad Mahdi Khalili

AI总结:

本文提出了一种通过随机分类器实现个体公平性的方法,并通过线性规划优化,有效缓解了分类中的不公平问题。

摘要:

在战略分类中,个体通过修改特征来影响机器学习(ML)决策,带来了关键的公平性挑战。尽管在这种情况下群体公平性已被广泛研究,但个体公平性仍处于探索阶段。我们分析了基于阈值的分类器,并证明确定性阈值违反个体公平性。然后,我们探讨了使用随机分类器实现个体公平性的可能性。我们引入了条件,这些条件使得随机分类器能够保证个体公平性,并利用这些条件通过线性规划问题找到最优且公平的随机分类器。此外,我们展示了我们的方法可以扩展到群体公平性概念。在真实世界数据集上的实验表明,我们的方法有效缓解了不公平性,并改善了公平性-准确性权衡。

英文摘要:

Strategic classification, where individuals modify their features to influence machine learning (ML) decisions, presents critical fairness challenges. While group fairness in this setting has been widely studied, individual fairness remains underexplored. We analyze threshold-based classifiers and prove that deterministic thresholds violate individual fairness. Then, we investigate the possibility of using a randomized classifier to achieve individual fairness. We introduce conditions under which a randomized classifier ensures individual fairness and leverage these conditions to find an optimal and individually fair randomized classifier through a linear programming problem. Additionally, we demonstrate that our approach can be extended to group fairness notions. Experiments on real-world datasets confirm that our method effectively mitigates unfairness and improves the fairness-accuracy trade-off.

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。

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