I am trying to use the general empirical dynamic model given as equation 3:51 on page 226 of Gabrielsson and Weiner 5th edition. there are several restrictions on model coefficients that need to be coded:
0 <= alpha*beta <= 1
beta = 0 if delta = 0
beta >= 0 if delta >0
how can I code this in PML?
William R. Wolowich