Dou, Liyu; Müller, Ulrich K. - In: Econometrica 89 (2021) 4, pp. 1825-1854
We introduce a generalization of the popular local‐to‐unity model of time series persistence by allowing for
p autoregressive (AR) roots and
p − 1 moving average (MA) roots close to unity. This generalized local‐to‐unity model, GLTU(
p),...