arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2204.01682stat.MLcs.LG
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深度特征筛选:通过深度神经网络进行超高维数据的特征选择

Deep Feature Screening: Feature Selection for Ultra High-Dimensional Data via Deep Neural Networks

Biogen(渤健);Worcester Polytechnic Institute(伍斯特理工学院);Texas Tech University(德克萨斯理工大学)

Kexuan Li, Fangfang Wang, Lingli Yang, Ruiqi Liu

AI总结:

针对超高维低样本量数据,本文提出两步非参数方法 DeepFS,结合深度神经网络低维表示与多元秩距离相关筛选,实现无模型、无分布、支持有监督和无监督选择并可恢复输入的高精度特征选择。

摘要:

传统统计特征选择方法在应用于高维、低样本量数据时常常力不从心,并遇到过拟合、维数灾难、计算不可行以及强模型假设等具有挑战性的问题。本文提出一种名为 Deep Feature Screening(DeepFS,深度特征筛选)的新型两步非参数方法,该方法能够克服上述问题,并针对超高维、低样本量数据以高精度识别显著特征。该方法首先提取输入数据的低维表示,随后基于 Deb 和 Sen(2021)近期提出的多元秩距离相关进行特征筛选。该方法结合了深度神经网络与特征筛选两者的优势,因此除了能够处理样本数量较少的超高维数据外,还具有以下吸引人的特性:(1)它是无模型且不依赖分布的;(2)它既可用于有监督特征选择,也可用于无监督特征选择;以及(3)它能够恢复原始输入数据。DeepFS 的优越性通过大量模拟研究和真实数据分析得到了证明。

英文摘要:

The applications of traditional statistical feature selection methods to high-dimension, low sample-size data often struggle and encounter challenging problems, such as overfitting, curse of dimensionality, computational infeasibility, and strong model assumption. In this paper, we propose a novel two-step nonparametric approach called Deep Feature Screening (DeepFS) that can overcome these problems and identify significant features with high precision for ultra high-dimensional, low-sample-size data. This approach first extracts a low-dimensional representation of input data and then applies feature screening based on multivariate rank distance correlation recently developed by Deb and Sen (2021). This approach combines the strengths of both deep neural networks and feature screening, and thereby has the following appealing features in addition to its ability of handling ultra high-dimensional data with small number of samples: (1) it is model free and distribution free; (2) it can be used for both supervised and unsupervised feature selection; and (3) it is capable of recovering the original input data. The superiority of DeepFS is demonstrated via extensive simulation studies and real data analyses.

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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