arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.06072stat.MLcs.LGstat.CO
收藏

次高斯率下稳健回归的谱算法

A spectral algorithm for robust regression with subgaussian rates

Jules Depersin

摘要:

我们研究了一个新的线性二次时间算法的线性回归在没有强假设的基本分布的样本,并在存在离群值。我们的目标是设计一个程序,它带有实际的工作代码,达到最佳的亚高斯误差界,即使数据只有有限的时刻(高达$L_4$),并在可能的敌对离群值的存在。这个问题的多项式时间的解决方案已被发现,但由于其使用的平方和层次编程有很高的运行时间。在我们的算法的核心是一个适应的频谱方法的平均估计问题的线性回归问题。作为副产品,我们建立了线性回归问题和最远超平面问题之间的联系。从随机的角度来看,除了经典的二次和乘数过程的研究,我们引入了第三个经验过程,自然在算法的统计特性的研究。

英文摘要:

We study a new linear up to quadratic time algorithm for linear regression in the absence of strong assumptions on the underlying distributions of samples, and in the presence of outliers. The goal is to design a procedure which comes with actual working code that attains the optimal sub-gaussian error bound even though the data have only finite moments (up to $L_4$) and in the presence of possibly adversarial outliers. A polynomial-time solution to this problem has been recently discovered but has high runtime due to its use of Sum-of-Square hierarchy programming. At the core of our algorithm is an adaptation of the spectral method introduced for the mean estimation problem to the linear regression problem. As a by-product we established a connection between the linear regression problem and the furthest hyperplane problem. From a stochastic point of view, in addition to the study of the classical quadratic and multiplier processes we introduce a third empirical process that comes naturally in the study of the statistical properties of the algorithm.

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。

↑