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arXiv 2404.09142math.STstat.MEstat.TH
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子空间选择中的错误发现率控制

Controlling the False Discovery Rate in Subspace Selection

Mateo Díaz, Venkat Chandrasekaran

AI总结:

针对高维低秩模型场景下子空间选择缺乏FDR控制方法的问题,基于随机矩阵理论提出无参数的主成分分析子空间选择方法,可在常见噪声模型下控制FDR,并在多场景验证了有效性。

摘要:

控制错误发现率(FDR)是多重检验、变量选择及相关同时推断问题的常用方法。在当代诸多应用中,模型并非由离散变量定义,这就要求拓宽FDR控制范式的适用范围。受高维矩阵低秩模型广泛应用的启发,我们针对主成分分析中的子空间选择问题,提出了适配子空间选择的FDR几何类似量的控制方法。我们的方法关键依赖于随机矩阵理论中最新发展的工具,特别是大随机矩阵的特征向量极限行为以及相邻特征值间距的刻画结果。我们的过程无需调参,且证明了针对文献中常见的噪声模型,该方法能实现子空间选择中的FDR控制。我们通过合成数据上的数值实验,以及单细胞RNA测序和高光谱成像中的实际问题,验证了算法的实用性。

英文摘要:

Controlling the false discovery rate (FDR) is a popular approach to multiple testing, variable selection, and related problems of simultaneous inference. In many contemporary applications, models are not specified by discrete variables, which necessitates a broadening of the scope of the FDR control paradigm. Motivated by the ubiquity of low-rank models for high-dimensional matrices, we present methods for subspace selection in principal components analysis that provide control on a geometric analog of FDR that is adapted to subspace selection. Our methods crucially rely on recently-developed tools from random matrix theory, in particular on a characterization of the limiting behavior of eigenvectors and the gaps between successive eigenvalues of large random matrices. Our procedure is parameter-free, and we show that it provides FDR control in subspace selection for common noise models considered in the literature. We demonstrate the utility of our algorithm with numerical experiments on synthetic data and on problems arising in single-cell RNA sequencing and hyperspectral imaging.

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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