Marcellino, Massimiliano; Musso, Alberto - Department of Economics, European University Institute - 2010
output gap are characterised by a high degree of uncertainty, much higher than that resulting from model and estimation … uncertainty only. In particular, the evidence indicates that both the magnitude and the sign of the real-time estimates of the … euro area output gap are very uncertain. The uncertainty is mostly due to parameter instability, while data revisions seem …