The Spring 2003 Quarterly Bulletin contained a report on modelling and forecasting at the Bank of England by Adrian Pagan. This article is a postscript to Professor Pagan's original report, and covers the introduction of the Bank's new macroeconomic model (the Bank of England Quarterly Model, or...

We summarize the history of macroeconometric system modelling as having produced four generations of models. Over time the principles underlying the model designs have been extended to incorporate eight major features. Because models often evolve in response to external events we are led to ask...