Compară metode
Examinează metodele selectate una lângă alta; rândurile care diferă sunt evidențiate.
| Testul Hausman cu parametri variabili în timp× | Modelul spațiului de stare (Filtrul Kalman)× | |
|---|---|---|
| Domeniu | Econometrie | Econometrie |
| Familie | Regression model | Regression model |
| Anul apariției≠ | 1978 (Hausman); TVP extension developed through 1980s–2000s | 1990 |
| Autorul original≠ | Hausman (1978) specification test framework extended to time-varying parameter settings | Harvey; Durbin & Koopman (state space treatment); Kalman filter |
| Tip≠ | Specification / endogeneity test | State space time series model |
| Sursa seminală≠ | Hausman, J. A. (1978). Specification tests in econometrics. Econometrica, 46(6), 1251-1271. DOI ↗ | Harvey, A. C. (1990). Forecasting, Structural Time Series Models and the Kalman Filter. Cambridge University Press. DOI ↗ |
| Denumiri alternative | TVP Hausman test, time-varying Hausman specification test, Hausman test with time-varying parameters, TVP endogeneity test | state space, Kalman filter, unobserved components model, Durum Uzayı Modeli (State Space / Kalman Filter) |
| Înrudite≠ | 3 | 4 |
| Rezumat≠ | The time-varying parameter Hausman test extends Hausman's (1978) classic specification test to models whose coefficients are allowed to evolve over time. It compares an efficient estimator (e.g., OLS or GLS assuming constant parameters) with a consistent estimator from a time-varying parameter model, using the contrast between them to detect parameter instability or endogeneity in dynamic settings. | A state space model is a general time series framework that describes a series through unobserved (latent) state variables linked by a measurement equation and a transition equation, with the states estimated in real time by the Kalman filter. Developed in the state space tradition of Harvey (1990) and Durbin & Koopman (2012), it nests ARIMA and exponential smoothing as special cases. |
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