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Sliced inverse median difference regression

机译:切片逆中位数差异回归

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摘要

In this paper we propose a sufficient dimension reduction algorithm based on the difference of inverse medians. The classic methodology based on inverse means in each slice was recently extended, by using inverse medians, to robustify existing methodology at the presence of outliers. Our effort is focused on using differences between inverse medians in pairs of slices. We demonstrate that our method outperforms existing methods at the presence of outliers. We also propose a second algorithm which is not affected by the ordering of slices when the response variable is categorical with no underlying ordering of its values.
机译:在本文中,我们提出了一种基于逆中位数差异的足够的尺寸减少算法。最近通过使用逆中位于反向中位数延长了每个切片中的反向手段的经典方法,以在异常值存在下稳定现有方法。我们的努力专注于在成对的切片上使用逆中位之间的差异。我们展示了我们的方法在异常值存在下优于现有方法。我们还提出了一种第二算法,当响应变量是分类时不受其值的基础排序时不受切片排序的第二种算法。

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