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arXiv 1406.3704stat.ME
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基于模型的多元二元数据降维聚类

Model-based clustering of multivariate binary data with dimension reduction

Michio Yamamoto, Kenichi Hayashi

摘要:

最近,具有降维的聚类方法受到统计学的广泛关注,并且已经提出了许多同时执行聚类和降维的方法。这项工作提出了一种新的程序,同时确定最佳的聚类结构的多元二进制数据和子空间,以表示该聚类结构。该方法是基于多元伯努利分布的有限混合模型,并假设每个组件具有低维表示的集群结构。该方法可以被认为是传统的潜在类分析模型的扩展。稀疏性被引入到负载值中,从而产生低维子空间,以增强子空间的可解释性和更稳定的提取。一个基于EM算法的开发,以有效地解决所提出的优化问题。我们证明了所提出的方法的有效性,将其应用到模拟研究和真实数据集。

英文摘要:

Clustering methods with dimension reduction have been receiving considerable wide interest in statistics lately and a lot of methods to simultaneously perform clustering and dimension reduction have been proposed. This work presents a novel procedure for simultaneously determining the optimal cluster structure for multivariate binary data and the subspace to represent that cluster structure. The method is based on a finite mixture model of multivariate Bernoulli distributions, and each component is assumed to have a low-dimensional representation of the cluster structure. This method can be considered an extension of the traditional latent class analysis model. Sparsity is introduced to the loading values, which produces the low-dimensional subspace, for enhanced interpretability and more stable extraction of the subspace. An EM-based algorithm is developed to efficiently solve the proposed optimization problem. We demonstrate the effectiveness of the proposed method by applying it to a simulation study and real datasets.

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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