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arXiv 2402.00592cs.LGstat.ML
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带有拒绝选项的部分标签学习

Partial-Label Learning with a Reject Option

Karlsruhe Institute of Technology, Germany(卡尔斯鲁厄理工学院)

Tobias Fuchs, Florian Kalinke, Klemens Böhm

AI总结:

针对部分标签学习中错误预测可能带来的严重后果,提出一种带拒绝选项的、风险一致的最近邻算法,在拒绝不确定预测的同时,实现非拒绝预测数量与准确率的最佳权衡。

摘要:

在现实世界的应用中,人们经常遇到带有歧义标签的数据,其中不同的标注者会分配相互冲突的类别标签。部分标签学习允许在这种弱监督环境下训练分类器,目前最先进的方法已经展现出良好的预测性能。然而,即使是最优算法也会产生错误预测,当这些预测影响行动或决策时,可能带来严重后果。我们提出了一种新颖的、具有风险一致性的、基于最近邻的部分标签学习算法,并带有拒绝选项,即该算法可以拒绝(不执行)不确定的预测。在人工数据集和真实数据集上的大量实验表明,与使用置信度阈值来拒绝不确定预测的竞争方法相比,我们的方法在非拒绝预测的数量和准确性之间提供了最佳权衡。当在没有拒绝选项的情况下进行评估时,我们基于最近邻的方法也达到了具有竞争力的预测性能。

英文摘要:

In real-world applications, one often encounters ambiguously labeled data, where different annotators assign conflicting class labels. Partial-label learning allows training classifiers in this weakly supervised setting, where state-of-the-art methods already show good predictive performance. However, even the best algorithms give incorrect predictions, which can have severe consequences when they impact actions or decisions. We propose a novel risk-consistent nearest-neighbor-based partial-label learning algorithm with a reject option, that is, the algorithm can reject unsure predictions. Extensive experiments on artificial and real-world datasets show that our method provides the best trade-off between the number and accuracy of non-rejected predictions when compared to our competitors, which use confidence thresholds for rejecting unsure predictions. When evaluated without the reject option, our nearest-neighbor-based approach also achieves competitive prediction performance.

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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