net = gpunpak(net, hp)
net = gpunpak(net, hp) takes an Gaussian Process data structure net and 
a hyperparameter vector hp, and returns a Gaussian Process data structure 
identical to
the input model, except that the covariance bias
bias, output noise noise, the input weight vector
inweights and the vector of covariance function specific parameters
 fpar have all
been set to the corresponding elements of hp.
gp, gppak, gpfwd, gperr, gpgradCopyright (c) Ian T Nabney (1996-9)