Johansen, Søren; Tabor, Morten Nyboe - In: Econometrics : open access journal 5 (2017) 3, pp. 1-46
A state space model with an unobserved multivariate random walk and a linear observation equation is studied. The purpose is to find out when the extracted trend cointegrates with its estimator, in the sense that a linear combination is asymptotically stationary. It is found that this result...