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arXiv 2111.03040stat.MEcs.NAmath.NAmath.OC
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扩展主成分分析

Extended Principal Component Analysis

Pablo Soto-Quiros, Anatoli Torokhti

摘要:

主成分分析(PCA)是一种寻找代表随机数据特征的主成分的变换。PCA还提供了PC到原始数据的重建。我们认为PCA的扩展,使我们能够提高相关的准确性和减少数值负荷,与已知的技术相比。这是由于所提出的变换的特殊结构而实现的,该变换包含两个矩阵$T_0$和$T_1$,以及所谓的辅助随机向量$\mathbf w$的特殊变换$\mathcal{f}$。因此,我们称之为三项PCA。特别是,我们证明了三项PCA总是存在的,即适用于奇异数据的情况。这两个严格的理论理由的三项PCA和模拟与现实世界的数据提供。

英文摘要:

Principal Component Analysis (PCA) is a transform for finding the principal components (PCs) that represent features of random data. PCA also provides a reconstruction of the PCs to the original data. We consider an extension of PCA which allows us to improve the associated accuracy and diminish the numerical load, in comparison with known techniques. This is achieved due to the special structure of the proposed transform which contains two matrices $T_0$ and $T_1$, and a special transformation $\mathcal{f}$ of the so called auxiliary random vector $\mathbf w$. For this reason, we call it the three-term PCA. In particular, we show that the three-term PCA always exists, i.e. is applicable to the case of singular data. Both rigorous theoretical justification of the three-term PCA and simulations with real-world data are provided.

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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