The unobserved heterogeneity distribution in duration analysis

The unobserved heterogeneity distribution in duration analysis
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DOI:
10.1093/biomet/asm013
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发表时间:
2007-03-01
期刊:
影响因子:
2.7
通讯作者:
Van den Berg, Gerard J.
Van den Berg, Gerard J.
中科院分区:
数学2区
文献类型:
--
作者:
Abbring, Jaap H.;Van den Berg, Gerard J.

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在一类具有比例未观察到的异质性的风险模型中,幸存者之间的异质性分布收敛于伽玛分布。这种趋同往往是迅速的。我们得出这个结果作为指数混合的一般结果,并探讨其对单变量和多变量久期模型的规范和实证分析的影响。
In a large class of hazard models with proportional unobserved heterogeneity, the distribution of the heterogeneity among survivors converges to a gamma distribution. This convergence is often rapid. We derive this result as a general result for exponential mixtures and explore its implications for the specification and empirical analysis of univariate and multivariate duration models.