Modified fixed effects estimation of technical inefficiency
Modified fixed effects estimation of technical inefficiency
复制标题
技术低效率的修正固定效应估计
DOI：
10.1007/s11123-016-0473-3
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发表时间：
2016
影响因子：
1.6
通讯作者：
Daniel Wikström
中科院分区：
文献类型：
--
作者：
Daniel Wikström
我们考虑技术低效率的矩量法固定效应（FE）估计。当处理大量横截面观测值 N 时，可以获得一致的无效率分布矩估计量。众所周知，当N较大而T（时间观测值的数量）较小时，经典的FE估计器可能会出现严重的向上偏差。矩量法 FE 估计器在大 N 设置中不会受到这种类型的偏差的影响。所提出的方法将经典有限元和最大似然估计联系起来，从而在不做出随机效应假设的情况下减少偏差。
We consider method-of-moments fixed effects (FE) estimation of technical inefficiency. When dealing with a large number of cross-sectional observations,N, it is possible to obtain consistent moment estimators of the inefficiency distribution. It is well known that the classical FE estimator may be seriously upward biased whenNis large andT, the number of time observations, is small. The method-of-moments FE estimators do not suffer from this type of bias in large-Nsettings. The proposed methodology bridges classical FE and maximum likelihood estimation, leading to a reduction in bias without making the random effects assumption.