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arXiv 2210.04249cs.LG
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关系数据的核心集及其应用

Coresets for Relational Data and The Applications

School of Data Science(数据科学学院);School of Computer Science and Technology(计算机科学与技术学院);University of Science and Technology of China(中国科学技术大学)

Jiaxiang Chen, Qingyuan Yang, Ruomin Huang, Hu Ding

摘要:

核心集是可以近似地保持原始输入数据集的结构的小集合。因此,我们可以在一个核心集上运行我们的算法,以减少总的计算复杂性。传统的coreset技术假定输入数据集可用于显式处理。然而,这种假设在现实世界中可能不成立。在本文中,我们考虑问题的coresets建设关系数据。也就是说,数据被解耦到几个关系表中,并且通过连接表来直接具体化数据矩阵可能非常昂贵。我们提出了一种新的方法,称为“聚合树与伪立方体”,可以建立一个核心集从下到上。此外,我们的方法可以巧妙地规避关系学习问题的几个麻烦问题[Khamis et al.,PODS 2019]。在一些温和的假设下,我们证明了我们的核心集方法可以应用于机器学习任务,如聚类,逻辑回归和SVM。

英文摘要:

A coreset is a small set that can approximately preserve the structure of the original input data set. Therefore we can run our algorithm on a coreset so as to reduce the total computational complexity. Conventional coreset techniques assume that the input data set is available to process explicitly. However, this assumption may not hold in real-world scenarios. In this paper, we consider the problem of coresets construction over relational data. Namely, the data is decoupled into several relational tables, and it could be very expensive to directly materialize the data matrix by joining the tables. We propose a novel approach called ``aggregation tree with pseudo-cube'' that can build a coreset from bottom to up. Moreover, our approach can neatly circumvent several troublesome issues of relational learning problems [Khamis et al., PODS 2019]. Under some mild assumptions, we show that our coreset approach can be applied for the machine learning tasks, such as clustering, logistic regression and SVM.

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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