Discrete-time IDPOLY model: A(q)y(t) = C(q)e(t)
A(q) = 1 - 0.135 q^-1 - 0.8649 q^-2
C(q) = 1 + 0.2315 q^-1
Estimated using ARMAX from data set mydata_y
Loss function 115.824 and FPE 115.835
Discrete-time IDPOLY model: A(q)y(t) = C(q)e(t)
A(q) = 1 - 1.556 q^-1 + 0.07357 q^-2 + 1.031 q^-3 - 0.5484 q^-4
C(q) = 1 - 1.171 q^-1 + 0.5629 q^-2 - 0.0342 q^-3
Estimated using ARMAX from data set mydata_y
Loss function 90.7377 and FPE 90.7571