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arXiv 2005.11743stat.MLcs.LG
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测量误差对聚类算法的影响

The effect of measurement error on clustering algorithms

Vrije Universiteit Amsterdam(阿姆斯特丹自由大学);Utrecht University(乌得勒支大学)

Paulina Pankowska, Daniel L. Oberski

摘要:

聚类由一组流行的技术组成,用于将数据分成感兴趣的组以进行进一步分析。众所周知,在其上执行聚类的许多数据源包含随机和系统测量误差。这样的错误可能不利地影响聚类。虽然已经开发了几种技术来处理这个问题,但对这些解决方案的有效性知之甚少。此外,没有工作到目前为止已经研究了系统误差对聚类解决方案的影响。在本文中,我们进行了蒙特卡罗研究调查的两个常见的聚类算法,合并和DBSCAN,随机和系统误差的敏感性。我们发现,测量误差是特别成问题的,当它是系统的,当它影响到数据集中的所有变量。对于这里考虑的条件,我们还发现,合并组件的基于分区的GMM比基于密度的DBSCAN程序对测量误差不太敏感。

英文摘要:

Clustering consists of a popular set of techniques used to separate data into interesting groups for further analysis. Many data sources on which clustering is performed are well-known to contain random and systematic measurement errors. Such errors may adversely affect clustering. While several techniques have been developed to deal with this problem, little is known about the effectiveness of these solutions. Moreover, no work to-date has examined the effect of systematic errors on clustering solutions. In this paper, we perform a Monte Carlo study to investigate the sensitivity of two common clustering algorithms, GMMs with merging and DBSCAN, to random and systematic error. We find that measurement error is particularly problematic when it is systematic and when it affects all variables in the dataset. For the conditions considered here, we also find that the partition-based GMM with merged components is less sensitive to measurement error than the density-based DBSCAN procedure.

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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