动态因子模型怎么转化为状态空间模型有知道的吗?
Fit an AR(1) model to changes in lncaputil
. sspace (u L.u, state noconstant) (D.lncaputil u, noerror), constraints(1)
Fit an ARMA(1,1) model to changes in lncaputil
. sspace (u1 L.u1 L.u2 e.u1, state noconstant) (u2 e.u1, state noconstant) (D.lncaputil u1, noconstant),
constraints(2/4) covstate(diagonal)