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| Mô hình Hiệu ứng Ngẫu nhiên Phi tuyến× | Mô hình Hiệu ứng Cố định (Fixed Effects Model - FE)× | |
|---|---|---|
| Lĩnh vực | Kinh tế lượng | Kinh tế lượng |
| Họ | Regression model | Regression model |
| Năm ra đời≠ | 1981–2010 | 1971–1978 |
| Người khởi xướng≠ | Heckman (1981); Chamberlain (1984); further systematized by Wooldridge (2010) | Mundlak (1978); Nerlove (1971); classical panel econometrics |
| Loại≠ | Panel data / nonlinear regression | Panel regression estimator |
| Công trình gốc≠ | Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0262232586 | Baltagi, B. H. (2021). Econometric Analysis of Panel Data (6th ed.). Springer. ISBN: 978-3030538002 |
| Tên gọi khác | nonlinear RE model, NLRE model, random effects nonlinear panel model, mixed nonlinear panel model | FE model, within estimator, least squares dummy variable, LSDV regression |
| Liên quan≠ | 1 | 5 |
| Tóm tắt≠ | The nonlinear random effects model extends classical random effects estimation to settings where the outcome variable is binary, count-based, censored, or otherwise non-continuously distributed across panel units. It accounts for unobserved individual heterogeneity by treating unit-specific effects as random draws from a distribution, then integrating them out to form a likelihood that can be maximised over the structural parameters. | The fixed effects (FE) model is the workhorse estimator for panel data when unobserved unit-specific characteristics are suspected to correlate with the regressors. By absorbing each entity's time-invariant heterogeneity into a separate intercept, FE isolates the causal effect of within-unit variation and eliminates omitted-variable bias from time-constant confounders. |
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