This paper considers the problem of jointly decomposing a set of time series variables into cyclical and trend components, subject to sets of stochastic linear restrictions among these cyclical and trend components. We derive a closed form solution to an ordinary problem featuring homogeneous...

Low rates of inflation have been recorded in recent years, despite a decline in the unemployment rate. This phenomenon could be the result of a series of transitory shocks or of a permanent change in the structure of the economy leading to a lower NAIRU. The paper suggests that, while the NAIRU...