CAN MACHINE LEARNING CATCH THE COVID-19 RECESSION?

被引:16
作者
Goulet Coulombe, Philippe [1 ]
Marcellino, Massimiliano [2 ,3 ]
Stevanovic, Dalibor [4 ,5 ]
机构
[1] Univ Penn, Philadelphia, PA 19104 USA
[2] Bocconi Univ, Baffi Carefin, IGIER, BIDSA, Milan, Italy
[3] Bocconi Univ, CEPR, Milan, Italy
[4] Univ Quebec Montreal, Montreal, PQ, Canada
[5] CIRANO, Montreal, PQ, Canada
关键词
machine learning; Big Data; forecasting; Covid-19; NUMBER;
D O I
10.1017/nie.2021.10
中图分类号
F [经济];
学科分类号
02 ;
摘要
Based on evidence gathered from a newly built large macroeconomic dataset (MD) for the UK, labelled UK-MD and comparable to similar datasets for the United States and Canada, it seems the most promising avenue for forecasting during the pandemic is to allow for general forms of nonlinearity by using machine learning (ML) methods. But not all nonlinear ML methods are alike. For instance, some do not allow to extrapolate (like regular trees and forests) and some do (when complemented with linear dynamic components). This and other crucial aspects of ML-based forecasting in unprecedented times are studied in an extensive pseudo-out-of-sample exercise.
引用
收藏
页码:71 / 109
页数:39
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