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Failure in improving likelihood in a state-space model

Posted: Tue Jan 10, 2012 9:47 am
by Dim
Hi,

I'm trying to specify the following state-space model:


@signal dlrgdp = c(1) + c(2)*dlrgdp(-1) + c(3)*dhom(-23) + sv1*dhom(-23) + [var = exp(c(9))]

@state sv1 = c(5)*sv1(-1) + [var = exp(c(7))]


But the output window indicates: "Failure to improve likelihood after X iterations"... How to solve this problem? Other quetion: How to determine the starting values of our parameters? I mean, which values to atribute ti them?

Thank you very much,

Dim