Improving Forecast Accuracy of Financial Vulnerability: Partial Least Squares Factor Model Approach
Hyeongwoo Kim () and
Kyunghwan Ko ()
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Kyunghwan Ko: Economic Research Team, Jeju Branch, The Bank of Korea
No 2017-14, Working Papers from Economic Research Institute, Bank of Korea
We present a factor augmented forecasting model for assessing the financial vulnerability in Korea. Dynamic factor models often extract latent common factors from a large panel of time series data via the method of the principal components (PC). Instead, we employ the partial least squares (PLS) method that estimates target specific common factors, utilizing covariances between predictors and the target variable. Applying PLS to 198 monthly frequency macroeconomic time series variables and the Bank of Korea's Financial Stress Index (KFSTI), our PLS factor augmented forecasting models consistently outperformed the random walk benchmark model in out-of-sample prediction exercises in all forecast horizons we considered. Our models also outperformed the autoregressive benchmark model in short-term forecast horizons. We expect our models would provide useful early warning signs of the emergence of systemic risks in Korea's financial markets.
Keywords: Partial least squares; Principal component analysis; Financial stress index; Out-of-sample forecast; RRMSPE; DMW statistics (search for similar items in EconPapers)
JEL-codes: C38 C53 C55 E44 E47 G01 G17 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ecm, nep-for and nep-mac
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