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Browsing Department of Economics (ECO) by Author "XU, Fang"

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Title: A Functional Coefficient Model View of the Feldstein-Horioka Puzzle Author(s): HERWARTZ, Helmut; XU, Fang Date: 2010 Type of Publication: Article Abstract: What does the saving-investment (SI) relation really measure and how should the SI relation be measured? These are two of the most discussed issues triggered by the so-called Feldstein-Horioka puzzle. Based on panel data ...
Title: Forecasting Annual Inflation with Seasonal Monthly Data: Using Levels versus Logs of the Underlying Price Index Author(s): LUETKEPOHL, Helmut; XU, Fang Date: 2009 Type of Publication: Working Paper Series/Report no.: EUI MWP; 2009/37 Abstract: This paper investigates whether using natural logarithms (logs) of price indices for forecasting inflation rates is preferable to employing the original series. Univariate forecasts for annual inflation rates for a number ...
Title: The Role of log Transformation in Forecasting Economic Variables Author(s): LUETKEPOHL, Helmut; XU, Fang Date: 2009 Type of Publication: Working Paper Series/Report no.: EUI MWP; 2009/06 Abstract: For forecasting and economic analysis many variables are used in logarithms (logs). In time series analysis this transformation is often considered to stabilize the variance of a series. We investigate under which ...

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