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Evidence of Convergence Clubs Using Mixture Models

机译:使用混合模型的收敛俱乐部的证据

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Cross-country economic convergence has been increasingly investigated by finite mixture models. Multiple components in a mixture reflect groups of countries that converge locally. Testing for the number of components is crucial for detecting convergence clubs. To assess the number of components of the mixture, we propose a sequential procedure that compares the shape of the hypothesized mixture distribution with the true unknown density, consistently estimated through a kernel estimator. The novelty of our approach is its capability to select the number of components along with a satisfactory fitting of the model. Simulation studies and an empirical application to per capita income distribution across countries testify for the good performance of our approach. A three-clubs convergence seems to emerge.
机译:越来越多的国家采用有限混合模型研究了跨国经济融合。混合中的多个组成部分反映了在本地融合的国家组。测试组件数量对于检测会聚俱乐部至关重要。为了评估混合物的组分数量,我们提出了一种顺序过程,该过程将假设的混合物分布的形状与真实的未知密度进行比较,并通过核估计器一致地进行估计。我们方法的新颖之处在于它能够选择组件数量以及对模型进行令人满意的拟合。模拟研究以及对国家人均收入分配的经验应用证明了我们方法的良好性能。三俱乐部融合似乎正在出现。

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