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arXiv 2109.04554cs.LGcs.CYcs.DS
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k-聚类中基于权值的个体公平性

Feature-based Individual Fairness in k-Clustering

IIT Kharagpur(印度理工学院卡哈拉格普尔分校);University of California, Santa Barbara(加州大学圣巴巴拉分校);MPI-SWS(马克斯·普朗克软件系统研究所);Rice University(莱斯大学)

Debajyoti Kar, Mert Kosan, Debmalya Mandal, Sourav Medya, Arlei Silva, Palash Dey, Swagato Sanyal

摘要:

确保机器学习算法的公平性是一项具有挑战性的重要任务。我们考虑的问题,聚类一组点,同时满足公平性约束。虽然已经有几个尝试,以捕捉组公平性的$k$聚类问题,公平性在个人层面上是相对较少的探讨。我们引入了一个新的概念,个人的公平性在$k$ -聚类的基础上不一定用于聚类的功能。我们表明,这个问题是NP-困难的,不承认一个常数因子近似。因此,我们设计了一个随机算法,保证近似在最小化的聚类距离的目标和个人的公平性自然的限制下的距离度量和公平性约束。最后,我们对六个竞争基线的实验结果验证了我们的算法产生的聚类比最公平的基线平均公平12.5%,同时在聚类目标方面的成本也比最佳基线平均低34.5%。

英文摘要:

Ensuring fairness in machine learning algorithms is a challenging and essential task. We consider the problem of clustering a set of points while satisfying fairness constraints. While there have been several attempts to capture group fairness in the $k$-clustering problem, fairness at an individual level is relatively less explored. We introduce a new notion of individual fairness in $k$-clustering based on features not necessarily used for clustering. We show that this problem is NP-hard and does not admit a constant factor approximation. Therefore, we design a randomized algorithm that guarantees approximation both in terms of minimizing the clustering distance objective and individual fairness under natural restrictions on the distance metric and fairness constraints. Finally, our experimental results against six competing baselines validate that our algorithm produces individually fairer clusters than the fairest baseline by 12.5% on average while also being less costly in terms of the clustering objective than the best baseline by 34.5% on average.

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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