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  • 學位論文

小規模的小型開放經濟體DSGE模型預測能力之評估

Assessing the Forecasting Performance of a Small-Scale Open Economy DSGE Model

指導教授 : 陳旭昇

摘要


經濟模型的預測能力一直是決策者所關心的議題,近年來有許多總體經濟文獻採用較小規模的動態隨機一般均衡(DSGE)模型來作為政策分析的工具;然而,文獻上卻缺乏對於這類模型預測表現之檢視。本文旨在評估一個小規模的小型開放經濟體之DSGE模型的預測能力,我們使用加拿大的資料,分別對上述模型以及一個簡單的向量自我迴歸(VAR)模型進行樣本外預測實驗,並以圖形和 Diebold-Mariano Test 之統計檢定方式來比較這兩個模型的預測表現。結果發現,相較於一個小規模的 DSGE 模型,除了名目匯率以外,VAR 模型皆能對所有的經濟變數給予較佳的預測值;然而,隨著預測期數的增加,VAR 模型的預測能力優勢會逐漸遞減。這些結果顯示,一個以較小規模的理論為基礎而發展之 DSGE 模型,其預測表現無法勝過一個以經濟資料和統計方法為基礎的 VAR 模型,因而無法成為一個良好的預測工具。

並列摘要


This paper aims to assess the forecasting performance of a small-scale open economy DSGE model for Canada. We conduct Diebold-Mariano test to compare the out-of-sample forecasts arising from such model with those from a simple VAR model. Our results show that the VAR model gives better forecasts than the DSGE model for all variables but the nominal exchange rate. However, the superiority of the VAR model diminishes for most variables as the forecasting horizon increases. These results indicate that a DSGE model with small-scale specifications might fail to beat a VAR model for being an useful forecasting tool.

參考文獻


Adolfson, Malin, Linde, Jesper, Villani, and Mattias (2007), “Forecasting performance of an open economy DSGE model”, Econometric Reviews, 26(2-4), 289–328.
Calvo, Guillermo (1983), “Staggered prices in a utility maximizing framework”, Journal of Monetary Economics, 12(3), 383–398.
Dib, Ali, Gammoudi, Mohamed, and Moran, Kevin (2008), “Forecasting canadian time series with the new keynesian model”, Canadian Journal of Economics, 41(1), 138–165.
Diebold, Francis X. and Mariano, Robert S. (2002), “Comparing the predictive accuracy”, Journal of Business and Economic Statistics, 20(1), 134–144.
Estrella, Arturo and Fuhrer, Jeffrey C. (2003), “Monetary policy shifts and the stability of monetary policy models”, The Review of Econometrics and Statistics, 85(1), 94–104.

被引用紀錄


張雅珍(2012)。財政政策經濟效果之研究:動態隨機一般均衡(DSGE)模型之應用〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2012.10035

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