arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1910.04069stat.MLcs.LG
收藏

无真值的回归误差估计

Estimating regression errors without ground truth values

University of Helsinki(赫尔辛基大学)

Henri Tiittanen, Emilia Oikarinen, Andreas Henelius, Kai Puolamäki

摘要:

回归分析是一种标准的监督机器学习方法,用于根据一组预测变量对结果变量进行建模。在大多数现实世界的应用中,我们不知道在训练数据之外预测的结果变量的真实值,即,真值是未知的。因此,由于过度拟合和概念漂移等现象,无法直接观察模型的估计何时可能是错误的。在本文中,我们提出了一个有效的框架估计的推广误差的回归函数,适用于任何家庭的回归函数时,真值是未知的。我们提出了一个理论推导的框架和经验评估其优势和局限性。我们发现,它执行鲁棒性,是有用的检测概念漂移数据集在几个现实世界的领域。

英文摘要:

Regression analysis is a standard supervised machine learning method used to model an outcome variable in terms of a set of predictor variables. In most real-world applications we do not know the true value of the outcome variable being predicted outside the training data, i.e., the ground truth is unknown. It is hence not straightforward to directly observe when the estimate from a model potentially is wrong, due to phenomena such as overfitting and concept drift. In this paper we present an efficient framework for estimating the generalization error of regression functions, applicable to any family of regression functions when the ground truth is unknown. We present a theoretical derivation of the framework and empirically evaluate its strengths and limitations. We find that it performs robustly and is useful for detecting concept drift in datasets in several real-world domains.

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。

↑