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arXiv 1801.01464stat.ME
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加权隐类建模

Cluster-weighted latent class modeling

Roberto Di Mari, Antonio Punzo, Zsuzsa Bakk

摘要:

通常在潜在类别分析(LCA)中,外部预测因子被视为聚类条件概率预测因子(具有协变量的LC模型)和/或评分条件概率预测因子(LC回归模型)。在这种情况下,它们的分布并不重要。当外部变量的分布被假设为依赖于LC成员资格时,类特异性分布在远端结局模型中是令人感兴趣的。在本文中,我们考虑了一个更一般的配方,典型的集群加权模型,它嵌入了潜在的类回归和远端的结果模型。这使我们能够同时测试协变量的分布是否在类别之间存在差异,以及协变量是否对指标有显著的直接影响,包括有关协变量-潜在变量关系的大部分信息。我们通过一组人口研究和意大利家庭资产所有权的实证应用表明所提出的建模方法的优势。

英文摘要:

Usually in Latent Class Analysis (LCA), external predictors are taken to be cluster conditional probability predictors (LC models with covariates), and/or score conditional probability predictors (LC regression models). In such cases, their distribution is not of interest. Class specific distribution is of interest in the distal outcome model, when the distribution of the external variable(s) is assumed to dependent on LC membership. In this paper, we consider a more general formulation, typical in cluster-weighted models, which embeds both the latent class regression and the distal outcome models. This allows us to test simultaneously both whether the distribution of the covariate(s) differs across classes, and whether there are significant direct effects of the covariate(s) on the indicators, by including most of the information about the covariate(s) - latent variable relationship. We show the advantages of the proposed modeling approach through a set of population studies and an empirical application on assets ownership of Italian households.

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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