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Thank you very much for your answer, Trubador. I am sorry for this late response. It took me a while to reply. As you suggested, I tried to build a state space representative with a constant drift term in a trend equation. Harvey(1985) and Clark(1987) suggest the following model. Y(t) = T(t) + C(t) ...

Thank you for your super prompt reply. I have some more questions here. 1. In carrying out an OLS estimation for the unknown parameter values, how should I handle the drift term, sv2? What I want is to get the growth rate of potential output. If we assume that sv2 denotes the rate of drift, it may b...

Dear Eviews useres, I am trying to get potential GDP per capita using kalman filter method. I followed Clark(1987) model which has a random walk with drift in the stochastic trend component. 1950-2004 GDP per capita data from Penn World Table 6.2 was used. The stat space representation in Eviews is ...