مقایسهٔ روشها
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| مدل خودرگرسیون برداری با پارامترهای متغیر با زمان (TVP-VAR)× | مدل بیزی وار (BVAR)× | |
|---|---|---|
| حوزه | اقتصادسنجی | اقتصادسنجی |
| خانواده | Regression model | Regression model |
| سال پیدایش≠ | 2005 | 1984 |
| پدیدآور≠ | Primiceri (2005); Cogley & Sargent (2001, 2005) | Doan, Litterman & Sims |
| نوع≠ | Multivariate time-series model with drifting coefficients | Multivariate time-series model |
| منبع بنیادین≠ | Primiceri, G. E. (2005). Time varying structural vector autoregressions and monetary policy. Review of Economic Studies, 72(3), 821-852. DOI ↗ | Doan, T., Litterman, R., & Sims, C. (1984). Forecasting and conditional projection using realistic prior distributions. Econometric Reviews, 3(1), 1–100. DOI ↗ |
| نامهای دیگر | TVP-VAR, time-varying VAR, TV-VAR, drifting-coefficient VAR | BVAR, Bayesian VAR, Bayesian vector autoregressive model, BVAR model |
| مرتبط≠ | 6 | 5 |
| خلاصه≠ | The Time-Varying Parameter VAR (TVP-VAR) model extends the standard vector autoregression by allowing the coefficients and error covariances to evolve gradually over time. Estimated via Bayesian methods and MCMC simulation, it captures how dynamic relationships between macroeconomic or financial variables shift across different economic regimes without requiring pre-specified break points. | The Bayesian Vector Autoregression (BVAR) model extends the classical VAR framework by incorporating prior beliefs about the model coefficients. Priors — most commonly the Minnesota prior — shrink VAR coefficients toward economically sensible values, dramatically reducing overfitting and improving out-of-sample forecast accuracy even when the number of variables is large. |
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