I need help with coding this state space dynamic factor model in proc ssm. I appreciate any help on this. Thanks in advance.
Observation equation:
GDPIt =GDPt +eIt
GDPEt=GDPt +eEt
State equation:
GDPt=µ*(1-ℊ) + ℊ*GDPt +eGt
where (eGt,eIt,eEt)' ~iidN(0,∑) and ∑=( sigma_sqGG 0 0, 0 sigma_sqII sigma_sqIB , 0 sigma_sqBI sigma_sqBB)
Parameters=(µ,ℊ,sigma_sqGG ,sigma_sqII ,sigma_sqIB ,sigma_sqBI ,sigma_sqBB)