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arXiv 2107.03430stat.ME
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ENNS:高维数据的变量选择、回归、分类和深度神经网络

ENNS: Variable Selection, Regression, Classification and Deep Neural Network for High-Dimensional Data

Kaixu Yang, Tapabrata Maiti

摘要:

在过去的几十年里,高维低样本数据问题一直是一个非常重要的话题。有大量的文献提出了各种各样的方法来处理这种情况,其中变量选择是一个引人注目的想法。另一方面,深度神经网络已被用于对响应和特征之间的复杂关系和相互作用进行建模,这是难以使用线性或加性模型来捕获的。本文讨论了神经网络模型变量选择技术的现状。我们表明,逐步算法与神经网络遭受的缺点,如变量进入模型后可能不一致。然后,我们提出了一种集成方法,以实现更好的变量选择,并证明它有概率趋于零,一个假变量被选中。然后,我们讨论了额外的正则化处理过拟合,使更好的回归和分类。我们研究了我们提出的方法的各种统计特性。大量的模拟和真实数据的例子提供支持的理论和方法。

英文摘要:

High-dimensional, low sample-size (HDLSS) data problems have been a topic of immense importance for the last couple of decades. There is a vast literature that proposed a wide variety of approaches to deal with this situation, among which variable selection was a compelling idea. On the other hand, a deep neural network has been used to model complicated relationships and interactions among responses and features, which is hard to capture using a linear or an additive model. In this paper, we discuss the current status of variable selection techniques with the neural network models. We show that the stage-wise algorithm with neural network suffers from disadvantages such as the variables entering into the model later may not be consistent. We then propose an ensemble method to achieve better variable selection and prove that it has probability tending to zero that a false variable is selected. Then, we discuss additional regularization to deal with over-fitting and make better regression and classification. We study various statistical properties of our proposed method. Extensive simulations and real data examples are provided to support the theory and methodology.

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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