Unified M -estimation of fixed-effects spatial dynamic models with short panels
短面板固定效应空间动态模型的统一 M 估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究固定效应、短面板与空间动态面板估计,直接支持面板数据分类,未提供将应用归为宏观面板的依据。
短面板固定效应空间动态模型的统一 M 估计AI 解读 ↓
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It is well known that quasi maximum likelihood (QML) estimation of dynamic panel data (DPD) models with short panels depends on the assumptions on the initial values, and a wrong treatment of them will result in inconsistency and serious bias. The same issues apply to spatial DPD (SDPD) models with short panels. In this paper, a unified M-estimation method is proposed for estimating the fixed-effects SDPD models containing three major types of spatial effects, namely spatial lag, spatial error and space–time lag. The method is free from the specification of the distribution of the initial observations and robust against nonnormality of the errors. Consistency and asymptotic normality of the proposed M-estimator are established. A martingale difference representation of the underlying estimating functions is developed, which leads to an initial-condition free estimate of the variance of the M-estimators. Monte Carlo results show that the proposed methods have excellent finite sample performance.