Dear expert,
Assume that we have a multivariate unobserved component model (or SUTSE, seemingly unrelated time series equation model) in STATE SPACE form, that is:
Y(t) = H A(t) + eps
A(t) = T A(t-1) + eta,
where A(t) is the unobserved component and equal to: A(t) = [a1t, a2t].
I am interested in the VAR(..) vector autoregressive form of this model. Moreover, how can we rewrite the SUTSE model in the following representation:
Y(t) = B Y(t-1) + additional terms if so, so what is exactly B following from the state space form above?
Some helpfull articles where they show it for an another case:
https://ic.ucsc.edu/~fravenna/home/ravenna_revision1_bde.pdf (page 45)
https://ic.ucsc.edu/~fravenna/home/ravenna_revision1_bde.pdf
Many thanks in advance.