All economists say that they want to take their models to the data. But with incomplete and highly imperfect data, doing so is difficult and requires carefully matching the assumptions of the model with the statistical properties of the data. The cointegrated VAR (CVAR) offers a way of doing so....

The present value model of the current account has been very popular, as it provides an optimal benchmark to which actual current account series have often been compared. We show why persistence in observed current account data makes the estimated optimal series very sensitive to small-sample...

Mit den diesjährigen Trägern des Nobelpreises für Wirtschaft, Robert. F. Engle und Clive W.J. Granger, werden zwei Vertreter der Zeitreihenökonometrie geehrt. Wie hat sich durch ihr Werk die statistische Analyse ökonomischer Zeitreihen verändert? Wie wird heute Volatilität auf...

A practice that has become widespread and widely endorsed is that of evaluating forecasts of financial variability obtained from discrete time models by comparing them with high-frequency ex post estimates (e.g. realised volatility) based on continuous time theory. In explanatory financial...