Hi all,

I want to specify p,d,q,P,D,Q,s in general SARIMA(p,d,q)\times(P,Q,D)_s models for the following time series x_t.

z_t=(1-0.5B)x_t and z_t=0.6z_{t-1} + w_t, where w_t is WN(0,1)

In this case, am i right to say that P,Q,D,s,q=0 and p,d=1?

x_t=0.6x_{t-1}+z_t and z_t=0.2z_{t-5} + w_t, where w_t is WN(0,1)

I am unsure of this identification too...