A SMOOTHING METHOD THAT LOOKS LIKE THE HODRICK–PRESCOTT FILTER
一种外观类似 Hodrick–Prescott 滤波的平滑方法AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确以宏观计量时间序列的平滑与滤波为背景,讨论 HP、指数平滑和低频投影,因此归入时间序列方向。
一种外观类似 Hodrick–Prescott 滤波的平滑方法AI 解读 ↓
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In recent decades, in the research community of macroeconometric time series analysis, we have observed growing interest in the smoothing method known as the Hodrick–Prescott (HP) filter. This article examines the properties of an alternative smoothing method that looks like the HP filter, but is much less well known. We show that this is actually more like the exponential smoothing filter than the HP filter although it is obtainable through a slight modification of the HP filter. In addition, we also show that it is also like the low-frequency projection of Müller and Watson (2018, Econometrica 86, 775–804). We point out that these results derive from the fact that all three similar smoothing methods can be regarded as a type of graph spectral filter whose graph Fourier transform is discrete cosine transform. We then theoretically reveal the relationship between the similar smoothing methods and provide a way of specifying the smoothing parameter that is necessary for its application. An empirical examination illustrates the results.