arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2105.01552stat.ME
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大规模最小二乘回归的现代子抽样方法

Modern Subsampling Methods for Large-Scale Least Squares Regression

Tao Li, Cheng Meng

摘要:

二次抽样方法的目的是选择一个子样本作为观察样本的替代品。作为大规模数据分析的一种有效方法,各种子采样方法被用来进行更有效的系数估计和模型预测。本文介绍了基于大规模最小二乘估计的几种最前沿的子采样方法。介绍了两类主要的二次抽样方法,分别是随机二次抽样方法和最优二次抽样方法。前者的目的是开发一个更有效的数据依赖的抽样概率,而后者的目的是选择一个确定性的子样本按照一定的最优性标准。提供了真实数据的例子来比较这些方法的经验,尊重的估计精度和计算时间。

英文摘要:

Subsampling methods aim to select a subsample as a surrogate for the observed sample. As a powerful technique for large-scale data analysis, various subsampling methods are developed for more effective coefficient estimation and model prediction. This review presents some cutting-edge subsampling methods based on the large-scale least squares estimation. Two major families of subsampling methods are introduced, respectively, the randomized subsampling approach and the optimal subsampling approach. The former aims to develop a more effective data-dependent sampling probability, while the latter aims to select a deterministic subsample in accordance with certain optimality criteria. Real data examples are provided to compare these methods empirically, respecting both the estimation accuracy and the computing time.

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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