Template-Type: ReDIF-Paper 1.0 Author-Name: Franses, Ph.H.B.F. Author-Name-Last: Franses Author-Name-First: Philip Hans Author-Person: pfr226 Title: An introduction to time-varying lag autoregression Abstract: This paper introduces a new autoregressive model, with the specific feature that the lag structure can vary over time. More precise, and to keep matters simple, the autoregressive model sometimes has lag 1, and sometimes lag 2. Representation, autocorrelation, specification, inference, and the creation of forecasts are presented. A detailed illustration for annual inflation rates for eight countries in Africa shows the empirical relevance of the new model. Various potential extensions are discussed. Length: 27 Creation-Date: 2020-04-01 File-URL: https://repub.eur.nl/pub/126706/EI2020-05-report.pdf File-Format: application/pdf Series: RePEc:ems:eureir Number: EI2020-05 Classification-JEL: C22, C53 Keywords: Autoregression, Time-varying lags, Forecasting Handle: RePEc:ems:eureir:126706