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Latent class models for ecological inference on voters transitions

机译:对选民过渡进行生态推断的潜在类模型

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This paper introduces some new models of ecological inference within the context of estimation of voter transitions across elections. In particular, we assume that voters of a given party in a given occasion may be split into two latent types: faithful voters, who will certainly vote again for the same party and movers, who will reconsider their choice. Our models allow for unobserved heterogeneity across polling stations both in the weights of the two latent classes within each party and also when modelling the choice of unfaithful voters. Different ways of modelling the unobserved heterogeneity are considered by exploiting properties of the Dirichlet-multinomial distribution and the Brown Payne model of voting transitions can be seen as a special case within the class of models presented here. We discuss pseudo-maximum likelihood estimation and present an application to recent elections in Italy.
机译:本文在估算跨选举的选民过渡的背景下,介绍了一些新的生态推理模型。尤其是,我们假定在特定场合中某个给定政党的选民可能会分为两种潜在类型:忠实的选民(肯定会再次为同一政党投票)和动议者(会重新考虑他们的选择)。我们的模型既考虑了每个政党内两个潜在类别的权重,又对不忠实的选民进行了建模,从而在投票站之间实现了观察不到的异质性。通过利用Dirichlet多项式分布的属性,可以考虑采用不同的方式对未观察到的异质性进行建模,并且投票过渡的Brown Payne模型可以视为此处介绍的模型类别中的一种特殊情况。我们讨论伪最大似然估计,并提出在意大利最近选举中的应用。

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