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arXiv 2002.08412stat.MLcs.LG
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基于相关高斯过程的弱监督多输出回归

Weakly-supervised Multi-output Regression via Correlated Gaussian Processes

University of Michigan(密歇根大学)

Seokhyun Chung, Raed Al Kontar, Zhenke Wu

AI总结:

提出基于相关高斯过程的弱监督多输出回归模型,利用不完整组别标签或先验信念提升预测精度,在缺失标签场景表现优异并具公平推断潜力。

摘要:

多输出回归旨在通过利用不同但相关的输出之间的共同性来增强学习和预测准确性。一个基本假设是所有观测值的输出/组别成员标签都是已知的。在实际应用中,这一假设常常被违背。例如,在医疗数据集中,种族等敏感属性常常缺失或未被报告。为此,我们提出了一种基于相关高斯过程的弱监督多输出模型。该方法能够利用不完整的组别标签数据或仅基于组别成员的先验信念,提升所有输出的预测准确性。通过大量模拟实验以及对Insulin、Testosterone和Bodyfat数据集的案例研究,我们表明该模型在标签缺失的多输出场景中表现优异,同时在传统全标签场景中也有竞争力。最后,我们强调了该方法在公平推断和序列决策中的潜在应用。

英文摘要:

Multi-output regression seeks to borrow strength and leverage commonalities across different but related outputs in order to enhance learning and prediction accuracy. A fundamental assumption is that the output/group membership labels for all observations are known. This assumption is often violated in real applications. For instance, in healthcare datasets, sensitive attributes such as ethnicity are often missing or unreported. To this end, we introduce a weakly-supervised multi-output model based on dependent Gaussian processes. Our approach is able to leverage data without complete group labels or possibly only prior belief on group memberships to enhance accuracy across all outputs. Through intensive simulations and case studies on an Insulin, Testosterone and Bodyfat dataset, we show that our model excels in multi-output settings with missing labels, while being competitive in traditional fully labeled settings. We end by highlighting the possible use of our approach in fair inference and sequential decision-making.

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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