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arXiv 1607.03574stat.ML
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附加数据对贝叶斯聚类的影响

Effects of Additional Data on Bayesian Clustering

Keisuke Yamazaki

摘要:

分层概率模型,如混合模型,用于聚类分析。这些模型有两种类型的变量:可观察的和潜在的。在聚类分析中,估计潜在变量,并且期望附加信息将提高潜在变量估计的准确性。许多提出的学习方法都能够使用额外的数据,包括半监督学习和迁移学习。然而,从统计学的角度来看,包含初始数据和附加数据的复杂概率模型可能由于具有更高维的参数而不太准确。本文提出了一种理论分析,这样一个模型的准确性,并澄清了哪些因素对其准确性的影响最大,获得额外的数据的优点,增加的复杂性和缺点。

英文摘要:

Hierarchical probabilistic models, such as mixture models, are used for cluster analysis. These models have two types of variables: observable and latent. In cluster analysis, the latent variable is estimated, and it is expected that additional information will improve the accuracy of the estimation of the latent variable. Many proposed learning methods are able to use additional data; these include semi-supervised learning and transfer learning. However, from a statistical point of view, a complex probabilistic model that encompasses both the initial and additional data might be less accurate due to having a higher-dimensional parameter. The present paper presents a theoretical analysis of the accuracy of such a model and clarifies which factor has the greatest effect on its accuracy, the advantages of obtaining additional data, and the disadvantages of increasing the complexity.

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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